CN101192703B - Four-ring type oppositely-positioned super small high gain planar antenna - Google Patents
Four-ring type oppositely-positioned super small high gain planar antenna Download PDFInfo
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Abstract
The invention relates to a four-ring opposite super-miniature high-gain plane antenna, which comprises a first radiation part and a second radiation part. The first radiation part comprises a first non-closed ring and a second non-closed ring which are parallel, and the secondary radiation part comprises a third non-closed ring and a fourth non-closed ring which are also parallel. Each of the first, the second, the third and the fourth non-closed rings is a circle that roughly encircles over half of a complete ring. Each of the first, the second, the third and the fourth non-closed rings of the first and the second radiation parts is provided with a partial ring section overlapped at a tail of an opening ring section of the non-closed ring; a first alignment axis perpendicularly intersects approximately with the overlapping line of the partial ring section overlapped of the first and the second non-closed rings; and a second aligning axis perpendicularly intersects approximately with the overlapping line of the partial ring section overlapped of the third and the fourth non-closed rings. The first and the second radiation parts are parallel and opposite, the first and the second alignment axes of which are overlapped in order to roughly align the first, the second, the third and the fourth non-closed rings of the first and the second radiation parts.
Description
Technical field
The present invention relates to a kind of microminiature, the flat plane antenna of high-gain (miniaturized high-gainflat antenna), particularly relate to 1,000,000,000 hertz of (giga-hertz) microwave frequency ranges of a kind of confession, be suitable for the opposed microminiature high gain planar antenna of Fourth Ring type of indoor environment directive property purposes.
Background technology
The microminiature flat plane antenna is of many uses, such as each node apparatus in wireless zone/Wide Area Network (wirelessLAN/WAN), comprise the fixedly router of character (router), and the kneetop computer of portability matter (laptop computers) with such as pouch-type USB (Universal SerialBus, universal serial bus) wireless network interface card peripheral accessories such as (wireless NIC) all needs to use reception and/or the firing operation of small flat antenna to carry out wireless signal.
Fig. 1 show existing known techniques typical case small flat antenna applicable to Wireless Communication Equipment with usefulness as the dual-mode antenna of its radio signals.Existing known flat plane antenna 100 among Fig. 1, it mainly is by standing wave primary radiation portion 110, and ground plane 120 constitutes.Utilize the circuit of antenna 100 transmitting radio signals, via load point 130 to the antenna FD feed.
The standing wave primary radiation portion 110 and the ground plane 120 of antenna 100 normally with the form of the lip-deep copper foil layer of printed circuit board (PCB) (PCB, printed circuit board), are formed on the insulating surface.As the printed circuit board (PCB) of its substrate, also may be the same circuit substrate of its main application purpose radioelectricity equipment simultaneously usually.
Therefore, both substantial dimensional of the standing wave primary radiation portion 110 of flat plane antenna 100 and ground plane 120 have influence on the physical size of its main radioelectricity equipment certainly.Under the demand trend of miniaturization and portability etc., the entity size size of antenna 100 has constituted the substantial limitation when equipment dwindles entity.Under practical situations, the flat plane antenna 100 of Fig. 1, its single antenna size is approximately 2.5 centimeters long, 1 centimeter wide.
In addition, the existing known flat plane antenna of Fig. 1, its design operation is owing to being the mode that belongs to the standing wave radiation, so its maximum gain only is about 2dBi.Meeting among the application purpose such as USB interface wireless network card of IEEE-802.11b/g communications protocol, the antenna gain of this 2dBi has considerably limited its practical use.
Moreover also the gain of Chang Yinqi signal is too small for small flat antenna, causes many problems that antenna interferes with each other in the environment for use.In addition because of polarization diversity and field pattern diversity so, and cause each passage relevance of space excessive, the shortcoming that causes system's frequency range to reduce.
This shows that above-mentioned existing small flat antenna obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of opposed microminiature high gain planar antenna of Fourth Ring type of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing small flat antenna exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of the opposed microminiature high gain planar antenna of the Fourth Ring type of founding a kind of new structure, can improve general existing small flat antenna, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
The objective of the invention is to, overcome the defective that existing small flat antenna exists, and the opposed microminiature high gain planar antenna of the Fourth Ring type that a kind of new structure is provided, technical problem to be solved is to make it increase the elasticity of Antenna Design, can be because of high-gain increase line distance and transmission rate, thus be suitable for practicality more.
Another object of the present invention is to, a kind of opposed microminiature high gain planar antenna of Fourth Ring type of new structure is provided, technical problem to be solved is to make it can put many low potato masher antennas in crawl space, and avoids interfering with each other therebetween, thereby is suitable for practicality more.
An also purpose of the present invention is, a kind of opposed microminiature high gain planar antenna of Fourth Ring type of new structure is provided, technical problem to be solved is to make it can avoid each passage relevance of space excessive, and can utilize the effect of space diversity and radiation pattern diversity, to avoid the Channel Bandwidth loss, and the relevance of each passage in the reduction space, improving the transmission capacity of each passage, thereby be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.The opposed microminiature high gain planar antenna of a kind of Fourth Ring type according to the present invention proposes comprises: a ground plane; One first Department of Radiation is a side that extends in this ground plane, and electrically connects with this ground plane, and wherein this first Department of Radiation is to have one first non-closed-loop and one second non-closed-loop, and this first non-closed-loop and this second non-closed-loop form one first opening; And one second Department of Radiation, it is this side that extends in this ground plane, the position is in the opposite end of this first opening, symmetrical with this first Department of Radiation, and electrically connect with this ground plane, wherein this second Department of Radiation is to have one the 3rd non-closed-loop and one the 4th non-closed-loop, the 3rd non-closed-loop and the 4th non-closed-loop form one second opening, this first non-closed-loop of this first Department of Radiation and this second Department of Radiation, this second non-closed-loop, the 3rd non-closed-loop and the 4th non-closed-loop be side by side and this first, the second non-closed-loop has a part ring section that overlaps each other, the 3rd, the 4th non-closed-loop has a part ring section that overlaps each other.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, the wherein said first non-closed-loop and this second non-closed-loop is adjacent is connected on the first order axis.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, the wherein said the 3rd non-closed-loop and the 4th non-closed-loop are adjacent to be connected on the second order axis.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, the part ring section that overlaps each other of wherein said this first, second non-closed-loop and this first order axis approximate vertical intersect, and the part ring section that overlaps each other of the 3rd, the 4th non-closed-loop and this second order axis approximate vertical are crossing.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, the part ring section end that wherein said first, second non-closed-loop overlaps each other is that one first load point is set, and the part ring section end that the 3rd, the 4th non-closed-loop overlaps each other is that one second load point is set.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, this first and second non-closed-loop of wherein said first Department of Radiation, and the 3rd and the 4th non-closed-loop of this second Department of Radiation wherein, each is all roughly around the circumference over half that surpasses of a complete circle.
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, wherein those Departments of Radiation are to make with the surperficial copper foil layer of printed circuit board (PCB).
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, wherein said ground plane are to make with the surperficial copper foil layer of printed circuit board (PCB).
The opposed microminiature high gain planar antenna of aforesaid Fourth Ring type, wherein said ground plane and those Departments of Radiation are to make with same copper foil layer.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, in order to achieve the above object, the invention provides the opposed microminiature high gain planar antenna of a kind of Fourth Ring type, it includes first and second Department of Radiation.First Department of Radiation comprises first and second non-closed-loop arranged side by side, and second Department of Radiation then comprises the 3rd and the 4th non-closed-loop arranged side by side.First, second and third and four non-closed-loops respectively are roughly around the circumference over half that surpasses of a complete circle.Each has overlapping part ring section at its open loop section tail end first, second and third of first and second Department of Radiation and four non-closed-loops, and the first order axis is that the double line approximate vertical with the overlapped part ring section of first and second non-closed-loop intersects, and the second order axis is that the double line approximate vertical with the overlapped part ring section of the 3rd and four non-closed-loops intersects.First and second Department of Radiation be opposed side by side, its first and second arrangement axis overlaps each other, so that first, second and third of first and second Department of Radiation and four or four non-closed-loop general alignment are on same straight line.The open loop section tail end of second and third non-closed-loop that first and second Department of Radiation is adjacent opposite one another overlaps each other, and the non-closed-loop of its double line and first and second is arranged the axis approximate vertical and intersected.
By technique scheme, type opposed microminiature high gain planar antenna in Fourth Ring of the present invention has following advantage at least:
One, microminiature high gain planar antenna of the present invention can increase the elasticity of Antenna Design, and can increase line distance and transmission rate because of high-gain.
Two, microminiature high gain planar antenna of the present invention is allowed and put many low potato masher antennas in crawl space, avoids interfering with each other between many antennas.
Three, microminiature high gain planar antenna of the present invention, can avoid causing each passage relevance of space excessive because of polarization diversity and field pattern diversity, it utilizes the effect of space diversity and radiation pattern diversity, to avoid the Channel Bandwidth loss, and the relevance of each passage in the reduction space, to improve the transmission capacity of each passage.
In sum, the opposed microminiature high gain planar antenna of the Fourth Ring type of novelty of the present invention, have above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing small flat antenna has the multinomial outstanding effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
The present invention utilizes the embodiment in graphic to carry out the explanation of non-limiting character, and wherein identical reference number is to indicate similar or components identical, graphic among:
Fig. 1 shows existing known techniques typical case small flat antenna, its applicable to Wireless Communication Equipment with usefulness as its dual-mode antenna.
Fig. 2 shows the antenna configuration plane graph according to the symmetry microminiature high gain planar antenna of preferred embodiment of the present invention.
The measurement field pattern figure of Fig. 3 displayed map 2 symmetry microminiature high gain planar antennas of the present invention when wherein a Department of Radiation is operated under the 2400MHz frequency.
The measurement field pattern figure of Fig. 4 displayed map 2 symmetry microminiature high gain planar antennas of the present invention when wherein a Department of Radiation is operated under the 2450MHz frequency.
The measurement field pattern figure of Fig. 5 displayed map 2 symmetry microminiature high gain planar antennas of the present invention when wherein another Department of Radiation is operated under the 2400MHz frequency.
The measurement field pattern figure of Fig. 6 displayed map 2 symmetry microminiature high gain planar antennas of the present invention when wherein another Department of Radiation is operated under the 2450MHz frequency.
Fig. 7 shows the antenna configuration plane graph according to the symmetry microminiature high gain planar antenna of another preferred embodiment of the present invention.
Isolation characteristic between two Departments of Radiation of Fig. 8 displayed map 7.
100,200,700: flat plane antenna 110: standing wave primary radiation portion
120,220,720: ground plane 130: load point
201,701: the first Department of Radiation 201Y, 202Y: overlapping ring section
202,702: second Department of Radiation, 231,731: first load point
232,732: the second load point 201X: first order axis
202X: second order axis 201A: the first non-closed-loop
201B: the second non-closed-loop 202A: the 3rd non-closed-loop
202B: the 4th non-closed-loop 201C: first opening
202C: second opening
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to opposed its embodiment of microminiature high gain planar antenna of Fourth Ring type, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
See also shown in Figure 2 according to small-sized high gain planar antenna of the present invention.Show antenna configuration plane graph among Fig. 2 according to the opposed microminiature high gain planar antenna of Fourth Ring type of preferred embodiment of the present invention.Flat plane antenna 200 of the present invention includes first Department of Radiation, 201, the second Departments of Radiation 202, and ground plane 220.
The flat plane antenna of Fig. 2 is symmetric small-sized high-gain aerial, and its outward appearance manifests approximate four annulus that have, as among the figure with the dotted line institute ring of sign generally, so can be referred to as Fourth Ring type antenna.All four rings of noticing flat plane antenna 200 are not to be closed-loop, and only are the local rings of spending the major part of circumference around a complete circle 360 generally.
The embodiment flat plane antenna 200 of Fig. 2 of the present invention when being applied to 2GHz microwave spectrum scope, such as in the purposes of IEEE-802.11b/g communications protocol wireless network interface card etc. the time, can be made in about 3.2 centimeters long, in 1 centimeter wide area.The size of this first and second Department of Radiation 201,202 merges only has an appointment 3.2 centimeters long, and 1 centimeter wide size can be in the layout of easily, such as, on existing all radio base stations or radio interface card.
In this areal extent, set along flat plane antenna 200 long axis direction both sides two subminiature first Departments of Radiation 201 and second Department of Radiation 202 have been comprised.In other words, this flat plane antenna 200 in the shown antenna copper foil layer areal extent, has held first Department of Radiation 201 and second Department of Radiation 202 of two printed circuit forms in Fig. 2, so be to belong to the microminiature flat plane antenna.Certainly, as understandable, first Department of Radiation 201 of the left and right sides and second Department of Radiation 202 are shared same big ground planes 220 among Fig. 2.
Opposed microminiature high gain planar antenna 200 embodiment of Fourth Ring type among Fig. 2, its first Department of Radiation 201 and second Department of Radiation 202 each all comprise adjacent side by side and two non-closed-loops that interlink.For example, first Department of Radiation 201 includes the first non-closed-loop 201A and the second non-closed- loop 201B, and 202 of second Departments of Radiation have the 3rd non-closed-loop 202A and the 4th non-closed-loop 202B.The first non-closed-loop 201A, the second non-closed-loop 201B, the 3rd non-closed-loop 202A and the 4th non-closed-loop 202B etc., as previously mentioned, roughly around the circumference over half that surpasses of a complete circle.
And, both rough ring hearts of the first non-closed-loop 201A of first Department of Radiation 201 and the second non-closed-loop 201B, and the 3rd non-closed-loop 202A of second Department of Radiation 202 and both rough ring hearts of the 4th non-closed-loop 202B, the row axis that respectively is arranged in a row respectively, as among the figure respectively with first order axis 201X and second order axis 202X that dotted line was indicated.Among the embodiment of Fig. 2, the first non-closed-loop 201A, the second non-closed-loop 201B, it does not seal partly formed breach the 3rd non-closed-loop 202A and the 4th non-closed-loop 202B etc., is the same side of arranging axis 201X, 202X this first and second.With regard to the embodiment of Fig. 2, those breach are especially towards the same side of ground plane 220.
Though do not indicate among the figure, but be understandable that, " breach " of the so-called first to fourth non-closed-loop 201A in this place, 201B, 202A, 202B is meant the roughly ring section breach abdicated of the relative place of ring section two tail ends of cirque structure of first and second Department of Radiation 201,202." the breach direction " of so-called non-closed-loop, then be meant by this non-closed-loop roughly encircle the heart towards the radial finger of this gap position to.
First, second, third and fourth non-closed- loop 201A, 201B, 202A, 202B that first Department of Radiation 201 and second Department of Radiation 202 have, each has the part ring section that overlaps each other at the tail end of the adjacent binding side of its integral loop section.The double line of its overlapped part indicates with dotted line 201Y and 202Y respectively in the drawings.The first non-closed-loop 201A of first Department of Radiation 201 and the second non-closed-loop 201B form a first order axis 201X, the 3rd non-closed-loop 202A of second Department of Radiation 202 and the 4th non-closed-loop 202B form a second order axis 202X, first order axis 201X and second order axis 202X be respectively with each self-corresponding non-closed-loop overlap each other partly that the double line 201Y and the 202Y approximate vertical of ring section intersect.
The part ring section end that first, second non-closed- loop 201A, 201B overlap each other is that one first load point 231 is set, and the part ring section end that the 3rd, the 4th non-closed- loop 202A, 202B overlap each other is that one second load point 232 is set.The circuit that utilizes flat plane antenna 200 transmitting radio signals is to flat plane antenna 200 FD feeds via first and second load point 231,232.
In addition, first Department of Radiation 201 and second Department of Radiation 202, as shown in the figure, be opposed side by side and interlink in figure on the horizontal direction, its first and second arrange axis 201X, 202X and come down to be aligned with each other so that first, second, third and fourth non-closed- loop 201A, 201B of first and second Department of Radiation 201,202,202A, 202B general alignment are on same straight line.Among the embodiment of Fig. 2, the breach of the non-closed-loop 201A of first, second, third and fourth of antenna, 201B, 202A, 202B is complete all in the same side of arranging axis, promptly towards the same side of ground plane 220.
The ring section of first Department of Radiation 201 and second and third non-closed-loop 201B of second Department of Radiation 202 adjacent binding opposite one another and 202A, its tail end also overlaps each other, and first and second arrangement axis 201X and 202X, also approximate vertical orthogonal that its double line 200Y and aforementioned first and second non-closed- loop 201A, 201B are aligned with each other.In this embodiment of Fig. 2, first and second Department of Radiation 201 and second and third non-closed-loop 201B of adjacent connection of 202 and the overlapping tail end of 202A more also are linked on the ground plane 220.
First Department of Radiation 201 of flat plane antenna 200 and second Department of Radiation 202 as shown in the figure, respectively have an opening.First non-closed-loop 201A of first Department of Radiation 201 and the arrangement of the second non-closed-loop 201B have formed one first opening 201C.Same, the 3rd non-closed-loop 202A of second Department of Radiation 202 and the 4th non-closed-loop 202B have also formed one second opening 202C side by side.In the preferred embodiment of Fig. 2 of the present invention, first and second opening 201C and the 202C of first and second Department of Radiation 201,202 of flat plane antenna 200, by being formed on the antenna copper foil layer, roughly mutually oppositely back to two openings.
The radiation characteristic of flat plane antenna 200 is traveling wave (traveling wave) radiation, and the actual measurement experience shows that its maximum gain can reach about 3.91dBi.The gain maximum of flat plane antenna 200 is to betide near the antenna spindle, is end-fire type antenna so it can belong to.One actual fabrication test experiments of Fig. 2 flat plane antenna 200 preferred embodiments, the accessible greatest irradiation gain of its institute as described above, is about 3.91dBi, and obviously general existing known flat plane antenna exceeds about 2 to 3dB i.Fig. 3 is the measurement field pattern figure of the opposed microminiature high gain planar antenna 200 of Fig. 2 the present invention when operating under the 2400MHz frequency.
What the measurement field pattern figure of Fig. 3 was shown is the flat plane antenna 200 of Fig. 2, and it comprises first Department of Radiation 201 that constitutes whole opposed small-sized high gain planar antenna system and the overall permanence of second Department of Radiation 202.Fig. 3 is shown be flat plane antenna 200 when the 2400MHz operating frequency, first Department of Radiation 201 wherein, i.e. right side Department of Radiation among Fig. 2, the polarization on the XY plane measures field pattern figure.What the measurement field pattern figure of Fig. 4 was shown then is the same flat plane antenna 200 of Fig. 2, and when the 2450MHz operating frequency, wherein identical Department of Radiation 201 measures field pattern figure in the polarization on XY plane.
Same, what the measurement field pattern figure of Fig. 5 was shown is the flat plane antenna 200 of Fig. 2, it comprises first Department of Radiation 201 and second Department of Radiation 202 that constitutes whole opposed small-sized high gain planar antenna system, when the 2400MHz operating frequency, second Department of Radiation 202 wherein, be left side Department of Radiation among Fig. 2, the polarization on the XY plane measures field pattern figure.What Fig. 6 was shown then is Fig. 2 flat plane antenna 200, and when the 2450MHz operating frequency, wherein Department of Radiation 202 measures field pattern figure in the polarization on XY plane.
Polarization measurement field pattern figure by Fig. 3 can find, utilize first and second Department of Radiation 201,202 opposed type flat plane antenna 200 of configuration in pairs, right side first Department of Radiation 201 wherein, at long axis direction (Fig. 2 is towards the direction of top) along Fig. 2 antenna, that is 0 degree direction of polarization diagram, have higher signal intensity.This higher signal strength is begun by 0 degree direction, is close to average the expansion towards the left and right sides, just sees obvious decay until the scope that surpasses left and right sides Ge Yue 90 degree.In other words, first Department of Radiation 201 can good signal intensity be contained quadrant one and four.The polarization of Fig. 3 measures field pattern figure and also shows, back in intimate two quadrants (quadrant two and three) of (180 degree directions of polarization diagram) with respect to what point to before the antenna system, aerial signal intensity relatively significantly decays.
What the polarization measurement field pattern figure of Fig. 4 was shown is identical first Department of Radiation 201 characteristic when the 2450MHz frequency in flat plane antenna 200.Measuring field pattern figure by the antenna polarization of Fig. 4 can find, first Department of Radiation 201 is approximate during at 2400MHz with it in the characteristic under the 2450MHz operating frequency.In other words, first Department of Radiation 201 of Fig. 2 flat plane antenna 200 all can good signal intensity be contained the place ahead of flat plane antenna 200, i.e. quadrant one and four under typical 802.11 communications protocols 2.4 and 2.45GHz operating frequency.
On the other hand, opposed small-sized high gain planar antenna 200 of the present invention, its another second Department of Radiation 202 with the expositor, then can be contained rear two quadrants of flat plane antenna 200 as following institute.Characteristic when Fig. 5 and 6 difference displayed map, 2 symmetry microminiature high gain planar antenna 200 its second Departments of Radiation 202 of the present invention are operated under 2400Mhz and 2450MHz frequency.Fig. 5 is shown be flat plane antenna 200 when the 2400MHz operating frequency, second Department of Radiation 202 wherein, i.e. left side Department of Radiation among Fig. 2, the polarization on the XY plane measures field pattern figure.The measurement field pattern figure of Fig. 6 is shown when then being the 2450MHz operating frequency, and the polarization of second Department of Radiation 202 on the XY plane measures field pattern figure.
The polarization of Fig. 5 measures field pattern figure and shows, left side second Department of Radiation 202 of flat plane antenna 200 along the major axis of Fig. 2 antenna towards the rear to, promptly 180 of polarization diagram degree directions have higher signal intensity.This high signal intensity is begun by 180 degree directions, on average launches towards the left and right sides, just sees obvious decay until the scope that surpasses left and right sides Ge Yue 90 degree.Second Department of Radiation 202 so promptly can good signal intensity be contained the quadrant two and three of flat plane antenna 200.Fig. 5 also shows, opposes being close in two quadrants (quadrant one and four) of the forward direction (0 degree direction of polarization diagram) that points to after antenna system, and the signal strength signal intensity of flat plane antenna 200 relatively significantly decays.
The polarization of Fig. 6 measures field pattern figure and shows second Department of Radiation 202 characteristic when the 2450MHz frequency in flat plane antenna 200.Measure field pattern figure as seen by the antenna polarization of Fig. 6, second Department of Radiation 202 is approximate during at 2400MHz with it in the characteristic under the 2450MHz operating frequency.Second Department of Radiation 202 of Fig. 2 flat plane antenna 200 2.4 and the 2.45GHz operating frequency under, therefore all can good signal intensity contain flat plane antenna 200, quadrant two and three.
Complex chart 3,4,5 and 6 polarization measures field pattern figure can find opposed small-sized high gain planar antenna 200 of the present invention, the combination of its first Department of Radiation 201 and second Department of Radiation 202 can utilize uniform high gain signal to contain 360 degree scopes of entire antenna.In other words, first Department of Radiation 201 of this embodiment flat plane antenna 200 of the present invention and second Department of Radiation 202 2.4 and the frequency range of 2.45GHz, have the containing property of high signal intensity of good front and back polarizers of big angle scope respectively.Also that is to say, use the wireless device of this antenna, can be suitable for the portability equipment purposes of omnidirectional's demand.Typical application comprises, but is not limited to, such as the portable wireless socket card at USB interface, and wireless router (wireless router), or the like.
Fig. 7 shows the antenna configuration plane graph according to the symmetry microminiature high gain planar antenna of another preferred embodiment of the present invention.The flat plane antenna 700 of Fig. 7 is similar with the flat plane antenna 200 among Fig. 2, is similarly the small-sized high-gain aerial of symmetry.The outward appearance of flat plane antenna 700 manifests to be similar to equally four annulus, also is one group of Fourth Ring type antenna.
The flat plane antenna 700 of Fig. 7 in the time of among near the microwave spectrum scope purposes being applied to 2GHz, can be made into about 3.2 centimeters long that are not more than Fig. 2 flat plane antenna 200, in 1 centimeter wide area.Its first and second Department of Radiation 701 and 702 merging size can be in the layout of easily, such as, on existing all radio base stations or radio interface card.Therefore, flat plane antenna 700 in the shown areal extent, has held first Department of Radiation 701 and second Department of Radiation 702 of two printed circuit forms in Fig. 7, also belong to the microminiature flat plane antenna.In addition, left and right sides Department of Radiation 701 and 702 among Fig. 7 as the flat plane antenna 200 of Fig. 2, is shared same ground plane 720.The radio signals that flat plane antenna 700 is launched are respectively to first Department of Radiation 701 and second Department of Radiation, 702 FD feeds of flat plane antenna 700 via first and second load point 731,732.
Notice all four rings of flat plane antenna 700, identical with the embodiment flat plane antenna 200 of Fig. 2, also non-is closed-loop, but the local ring of spending the major part of circumference around a unbroken loop 360 generally.In comparison, flat plane antenna 700 first and second Departments of Radiation are totally four rings, and it is slightly big than flat plane antenna around degree.And, with flat plane antenna 200 in comparison, the open tail end of the outer ring of first Department of Radiation 701 and second Department of Radiation 702 is more towards the central point direction bending of ring.
Measured result shows that the flat plane antenna 700 of Fig. 7 has the complete 360 degree angle high-gain signal characteristics that are similar to Fig. 2 flat plane antenna 200.Because the layout area of Fig. 7 flat plane antenna 700 is littler than the flat plane antenna 200 of Fig. 2, approximately only reach 2.6 centimeters long, 1 centimeter wide, than 3.2 centimeters long of flat plane antenna 200,1 centimeter wide size is more seen reduction, therefore is more suitable in portable wireless communication appliance miniaturization demand.In addition, embodiment of the invention flat plane antenna 700, through measured result, maximum gain can reach about 3.9dBi, and the maximum gain compared to Fig. 1 has the about 2dBi of antenna of known techniques now obviously can enlarge transmission range and/or scope.
Isolated characteristic between Fig. 8 displayed map 7 flat plane antennas, 700 first Departments of Radiation 701 and second Department of Radiation 702.As shown in the figure, flat plane antenna 700 is when the 2.4GHz frequency, and the channel separation that its first Department of Radiation 701 and second Department of Radiation are 702 reaches-13.4dB, more reaches when 2.5GHz-14.2dB.Because first Department of Radiation 701 and second Department of Radiation 702 of flat plane antenna 700 are layings arranged side by side, channel separation therebetween is very important.Good channel separation can avoid the signal of a Department of Radiation to be coupled into another adjacent Department of Radiation, interferes with each other avoiding.
Fig. 2 of the present invention and 7 the opposed microminiature high gain planar antenna of Fourth Ring biradial portion, flat plane antenna compared to existing known techniques, the advantage of reducing favourable miniaturization except area, and between aforesaid Department of Radiation channel isolation good beyond, the effect that can reach the field pattern diversity is more arranged.In addition since the minification of two Departments of Radiation of flat plane antenna of the present invention with and particular topology appearance, have more the advantage that parasitic capacitance reduces.If will be positioned on the tellite according to two groups or above antenna of the present invention, more can reach the effect of space diversity and radiation pattern diversity, reduce the relevance of each passage in the space, and more can improve the transmission capacity of each passage.
Microminiature high gain planar antenna of the present invention as aforementioned, can increase the elasticity of Antenna Design, and can increase line distance and transmission rate because of high-gain.Microminiature high gain planar antenna of the present invention is also allowed and put many low potato masher antennas in crawl space, avoids interfering with each other between many antennas.Microminiature high gain planar antenna of the present invention also can be avoided causing each passage relevance of space excessive because of polarization diversity and field pattern diversity, it utilizes the effect of space diversity and radiation pattern diversity, to avoid the Channel Bandwidth loss, and the relevance of each passage in the reduction space, to improve the transmission capacity of each passage.So, antenna of the present invention just can be suitable for being applied to the various wireless telecommunication system such as the 2.4GHz frequency range, intelligent antenna system, wireless telecommunications systems such as multi-input multi output (MIMO) system.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (9)
1. opposed microminiature high gain planar antenna of Fourth Ring type is characterized in that it comprises:
One ground plane;
One first Department of Radiation is a side that extends in this ground plane, and electrically connects with this ground plane, and wherein this first Department of Radiation is to have one first non-closed-loop and one second non-closed-loop, and this first non-closed-loop and this second non-closed-loop form one first opening; And
One second Department of Radiation, it is this side that extends in this ground plane, the position is in the opposite end of this first opening, symmetrical with this first Department of Radiation, and electrically connect with this ground plane, wherein this second Department of Radiation is to have one the 3rd non-closed-loop and one the 4th non-closed-loop, the 3rd non-closed-loop and the 4th non-closed-loop form one second opening, this first non-closed-loop of this first Department of Radiation and this second Department of Radiation, this second non-closed-loop, the 3rd non-closed-loop and the 4th non-closed-loop be side by side and this first, the second non-closed-loop has a part ring section that overlaps each other, the 3rd, the 4th non-closed-loop has a part ring section that overlaps each other.
2. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, it is characterized in that the wherein said first non-closed-loop and this second non-closed-loop is adjacent is connected on the first order axis.
3. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 2, it is characterized in that the wherein said the 3rd non-closed-loop and the 4th non-closed-loop are adjacent to be connected on the second order axis.
4. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 3, the part ring section that overlaps each other and this first order axis approximate vertical that it is characterized in that wherein said this first, second non-closed-loop intersect, and the part ring section that overlaps each other of the 3rd, the 4th non-closed-loop and this second order axis approximate vertical are crossing.
5. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, it is characterized in that the part ring section end that wherein said first, second non-closed-loop overlaps each other is that one first load point is set, and the part ring section end that the 3rd, the 4th non-closed-loop overlaps each other is that one second load point is set.
6. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, this first and second the non-closed-loop that it is characterized in that wherein said first Department of Radiation, and the 3rd and the 4th non-closed-loop of this second Department of Radiation wherein, each is all roughly around the circumference over half that surpasses of a complete circle.
7. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, it is characterized in that wherein those Departments of Radiation are to make with the surperficial copper foil layer of printed circuit board (PCB).
8. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, it is characterized in that wherein said ground plane is to make with the surperficial copper foil layer of printed circuit board (PCB).
9. according to the opposed microminiature high gain planar antenna of the Fourth Ring type of claim 1, it is characterized in that wherein said ground plane and those Departments of Radiation are to make with same copper foil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101609370A CN101192703B (en) | 2006-12-01 | 2006-12-01 | Four-ring type oppositely-positioned super small high gain planar antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101609370A CN101192703B (en) | 2006-12-01 | 2006-12-01 | Four-ring type oppositely-positioned super small high gain planar antenna |
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| Publication Number | Publication Date |
|---|---|
| CN101192703A CN101192703A (en) | 2008-06-04 |
| CN101192703B true CN101192703B (en) | 2011-04-20 |
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| CN2006101609370A Expired - Fee Related CN101192703B (en) | 2006-12-01 | 2006-12-01 | Four-ring type oppositely-positioned super small high gain planar antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102055072B (en) * | 2009-10-29 | 2014-06-25 | 光宝电子(广州)有限公司 | Multiple ring antenna module with wide wave packet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285210A (en) * | 1990-05-08 | 1994-02-08 | Nippon Sheet Glass Co., Ltd. | Double loop antenna with reactance elements |
| US6160518A (en) * | 1999-04-02 | 2000-12-12 | Visteon Global Technologies, Inc. | Dual-loop multiband reception antenna for terrestrial digital audio broadcasts |
| CN2596567Y (en) * | 2003-01-03 | 2003-12-31 | 智邦科技股份有限公司 | Plane reverse F shape antenna |
-
2006
- 2006-12-01 CN CN2006101609370A patent/CN101192703B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285210A (en) * | 1990-05-08 | 1994-02-08 | Nippon Sheet Glass Co., Ltd. | Double loop antenna with reactance elements |
| US6160518A (en) * | 1999-04-02 | 2000-12-12 | Visteon Global Technologies, Inc. | Dual-loop multiband reception antenna for terrestrial digital audio broadcasts |
| CN2596567Y (en) * | 2003-01-03 | 2003-12-31 | 智邦科技股份有限公司 | Plane reverse F shape antenna |
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| Publication number | Publication date |
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| CN101192703A (en) | 2008-06-04 |
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