JP5532942B2 - Glass antenna - Google Patents

Description

  The present invention relates to an antenna device, and more particularly, to a glass antenna suitable for receiving a terrestrial digital TV broadcast wave and a UHF band analog TV broadcast wave provided on an automobile window glass.

  Conventionally, as a glass antenna for a vehicle, an antenna provided in an upper margin portion or a lower margin portion of a conductive wire for heating a defogger of a rear window glass has been widely proposed and known (for example, see Patent Documents 1 to 4). ). When an antenna is provided on the rear window glass, an antifogging heating filament is provided in most areas of the rear window glass, and an antenna is provided in the blank portion, so that a space for providing the antenna is limited.

  In addition, with the antenna provided on the rear window glass, the number of elements was increased in order to improve the antenna sensitivity, and vertical elements were added in the defogger area, but this made the antenna pattern complicated and attractive. There were problems such as getting worse and obstructing rear view. There is also a problem that the number of development man-hours and costs for tuning increase due to an increase in the number of filaments of elements.

JP 2008-124822 A JP 2008-5474 A JP 2007-295536 A JP 2006-197184 A

  The glass antennas of Patent Documents 1 to 4 are arranged in parallel to the body flange in order to use a horizontal or vertical body flange as a ground in the rear window glass of the automobile.

  On the other hand, if a glass antenna can be arrange | positioned at the upper left-right end of a rear window glass, the appearance by a glass antenna and the deterioration of a visual field can be prevented. However, if the body flanges on the left and right of the upper part of the rear window glass are inclined or loosely curved, if the conventional glass antenna is arranged parallel to or along the inclined part of the body flange, the antenna The main elements are arranged obliquely, and it is difficult to receive a horizontally polarized broadcast wave satisfactorily.

  An object of the present invention is to provide a glass antenna that can receive a horizontally polarized broadcast wave satisfactorily even if it is disposed at a corner of a rear window glass.

That is, the first invention is a glass antenna including a hot side element and a ground side element, the hot side element being connected to a hot side feeding point, a hot side first element, and a hot side second element. The ground side element is connected to a ground side feeding point, and includes a ground side first element, a ground side second element, a ground side third element, and a ground side fourth element, The first side element is connected to the hot side feeding point and extends in a horizontal direction away from the ground side feeding point, and the second hot side element is connected to the hot side feeding point and is connected to the ground side. A first filament extending away from the fourth element, and a second filament disposed substantially parallel to the hot-side first element, The ground side fourth element is disposed between the flange and the ground side feeding point, and the ground side first element, the ground side second element, and the ground side third element are the ground side fourth element. The element and the ground side feeding point are arranged at opposite positions, and the ground side first element extends in a horizontal direction so as to approach the hot side second element, and the ground side second element is Connected to the ground side first element, arranged parallel to the ground side fourth element, the ground side third element extending in a direction away from the ground side fourth element from the ground side feeding point, and others The end is connected to the ground side second element, the ground side fourth element is connected to the ground side feeding point, and the hot side power supply is connected. By being arranged diagonally along the body flange toward between the point and the body flange, a glass antenna, characterized in that said body flange and capacitive coupling.

  The second invention is the glass antenna according to the first invention, wherein the second element on the hot side includes a plurality of second wires having different lengths.

  Moreover, 3rd invention is set to 1st or 2nd invention. WHEREIN: The said hot side 2nd element contains two or more filaments arrange | positioned in parallel at the position which adjoins so that it may mutually electromagnetically couple. This is a featured glass antenna.

  According to a fourth invention, in any one of the first to third inventions, the ground side first elements are arranged in parallel at positions close to each other so as to be electromagnetically coupled to each other. It is a glass antenna characterized by including.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the ground side third element extends from the ground side power supply point to the hot side power supply point in parallel with the ground side fourth element. 4th line | wire extended | stretched so that it may approach, and 5th line | wire extended | stretched in the direction away from the said earth side 4th element, and connecting the said earth side 2nd element and the said 4th line | wire. It is a glass antenna.

  According to a sixth invention, in any one of the first to fifth inventions, the hot side element further includes a hot side third element, and the hot side third element is the hot side feeding point. A glass antenna, comprising: a sixth wire extending to be away from the ground side fourth element; and a seventh wire extending in a horizontal direction to approach the ground side element. is there.

  In the antenna of the present invention, one ground side fourth element is placed close to the body flange, and the other ground side element is arranged on the opposite side of the feeding point, thereby ensuring the necessary antenna sensitivity and the antenna pattern. The antenna characteristics can be easily adjusted, and the development period can be shortened.

  Therefore, even when it is disposed on the front window glass, the driver's field of view is not hindered, and a small and high-performance antenna can be provided.

  Furthermore, since all or part of the antenna element, the conductor part, and the feeding point are provided on the ceramic paste layer around the window glass, the antenna is difficult to see from outside the vehicle, and the appearance is improved.

  Furthermore, since the antenna of the present invention is arranged on an inclined ground plane such as a window glass for automobiles, it can receive horizontal polarization with good sensitivity.

The block diagram of the antenna of the 1st Embodiment of this invention. The block diagram of the antenna of the 2nd Embodiment of this invention. The block diagram of the antenna of the 3rd Embodiment of this invention. The block diagram of the antenna of the 4th Embodiment of this invention. The figure which shows the example which has arrange | positioned the antenna of embodiment of this invention to the rear window glass of a motor vehicle. The frequency characteristic figure of the antenna of embodiment of this invention. The directional characteristic figure of the antenna of embodiment of this invention. The block diagram of the antenna of proportionality of embodiment of this invention.

  The antenna according to the embodiment of the present invention will be described below.

<First Embodiment>
The antenna shown in FIG. 1 is an antenna arranged along the body flange 2 in the upper left part of the rear window glass of the automobile.

  The antenna of the first embodiment includes a hot side first element 11, a hot side second element 12, 12 ′, a hot side feeding point 6, an earth side feeding point 7, an earth side first element 21, 21 ′, and an earth. The second side element 22, the ground side third element 23, and the ground side fourth element 24 are provided on substantially the same plane.

  Hereinafter, the hot side first element 11 and the hot side second elements 12 and 12 ′ are referred to as a hot side element group 10. The ground side first elements 21 and 21 ′, the ground side second element 22, the ground side third element 23, and the ground side fourth element 24 are referred to as a ground side element group 20.

  The hot-side first element 11 is connected to the hot-side feeding point 6 at its end point and extends in the horizontal direction so as to be away from the hot-side feeding point 6.

  The hot-side second elements 12, 12 ′ are connected to the hot-side feeding point 6 at one end, and the first filaments 12A, 12A ′ and the first filaments 12A, 12A ′ arranged on the feeding point side. It is comprised by 2nd filament 12B, 12B 'connected with an end. The first filaments 12 </ b> A and 12 </ b> A ′ are substantially orthogonal to the ground-side fourth element 24 and extend in a direction away from the ground-side fourth element 24. The first filament 12A is an element for receiving a radio wave whose polarization plane is inclined due to the influence of reflection or the like, and is thus arranged obliquely compared to the horizontal direction. Moreover, the 2nd filament 12B is extended | stretched to a horizontal direction so that it may leave | separate from the hot side feeding point 6. FIG.

  Each of the hot-side second elements 12 and 12 ′ has two ends connected to the hot-side feeding point 6 and extending substantially in parallel, and the first hot-side second element 12 ′ has a first end. The filament 12A ′ and the second filament 12B ′ are shorter than the first filament 12A and the second filament 12B of the hot-side second element 12, respectively.

  Hot side feed point 6 and ground side feed point 7 are connected to hot side element group 10 and ground side element group 20, respectively.

  One end of the ground side third element 23 is connected to the ground side feeding point 7, extends in a direction away from the ground side fourth element 24, and is connected to the ground side second element 22 at the other end. The ground side third element 23 extends substantially parallel to the first filament 12A of the hot side second element 12. The ground side second element 22 and the ground side third element 23 are connected in the vicinity of an intermediate point of the ground side second element 22. One end of the ground side second element 22 is connected to the two ground side first elements 21, 21 ′, and extends substantially parallel to the ground side fourth element 24.

  The two ground side first elements 21 and 21 'extend substantially parallel to the second filaments 12B and 12B' of the hot side first element 11 and the hot side second elements 12 and 12 '.

  The ground side fourth element 24 is disposed along the body flange 2 and connected to the ground side feeding point 7. The ground-side fourth element 24 is arranged such that the distance between the ground-side fourth element 24 and the body flange 2 is narrower than the distance between the hot-side first element 11 and the body flange 2.

  In the first embodiment, since the upper corner of the body flange 2 is oblique, that is, is disposed at a predetermined angle with respect to the horizontal, the ground-side fourth element 24 is disposed obliquely along the body flange 2. Is done. Even if the upper corner of the body flange 2 is a gentle curve, the ground-side fourth element 24 is disposed obliquely along the body flange 2.

  Next, the length of each element of the antenna according to the first embodiment will be described.

  The length of the hot-side first element 11 of the antenna of the first embodiment is about α × λ / 2 where α is the wavelength shortening rate of the glass and λ is the wavelength of the center frequency (resonance frequency) of the reception band. However, since the hot-side first element 11 is an element for receiving radio waves on the low-middle side of the reception band, it is desirable that the value be α × λ / 2 or more.

  The length of the second filament 12B of the hot-side second element 12 is about α × λ / 4, where α is the wavelength shortening rate of the glass and λ is the wavelength of the center frequency (resonance frequency) of the reception band. Since the second filament 12B is an element for receiving radio waves in the middle and high range of the reception band, the length of the second filament 12B is desirably α × λ / 4 or less.

  The length of the first filament 12A is also about α × λ / 4 or less, where λ is the wavelength of the center frequency of the reception band. This is because the first filament 12A is an element for receiving radio waves in the middle and high range.

  The two hot-side second elements 12, 12 'are arranged at a narrow interval so that both elements are electromagnetically coupled.

  The lengths of the two ground-side first elements 21 and 21 'are substantially the same, and the wavelength of the center frequency of the reception band is approximately α × λ / 2, and the two elements are electromagnetically coupled. So as to be arranged at a narrow interval.

  When the lengths of the ground-side second element 22 and the ground-side fourth element 24 are about α × λ / 4 where the wavelength is λ, the antenna of the present embodiment has good sensitivity (gain). Is obtained.

  The antenna shown in FIG. 1 has a length when applied to an antenna in a Japanese UHF television band (frequency band 470 to 770 MHz) or a terrestrial digital broadcast wave band (frequency band 470 to 710 MHz).

  Specifically, the length of the hot-side first element 11 is 160 mm, which corresponds to about α × λ / 2 having a frequency of about 560 MHz. In the antenna of the present embodiment, if the hot-side first element 11 is 110 mm to 180 mm, similar sensitivity can be obtained at the corresponding frequency.

  The length of the second filament 12B in the hot-side second element 12 is 70 mm, which corresponds to approximately α × λ / 2 having a frequency of approximately 640 MHz. The distance between the two hot second elements 12, 12 'is 5 mm.

  The length of each ground side first element 21, 21 ′ is 150 mm, the length of the ground side second element 22 is 75 mm, and the length of the ground side third element 23 is 20 mm. The distance between the two ground side first elements 21, 21 'is 5 mm. The ground side second element 22 and the ground side third element 23 are connected at a position of 40 mm from the end point where the ground side second element 22 is connected to the ground side first element 21.

  Since the antenna of the first embodiment forms a pattern on the interior surface of the vehicle window glass (for example, the rear window glass 1 shown in FIG. 5), the wavelength reduction rate α by the glass plate is 0.6. As a result, each element length was calculated.

  Further, a core wire and a sheath wire of a coaxial cable (not shown) are connected to the hot-side feeding point 6 and the ground-side feeding point 7 of the present embodiment, respectively, and connected to a tuner (not shown).

  Next, the principle of operation of the antenna according to the first embodiment will be described.

  The hot first element 11 and the second filament 12B of the hot second element 12 are elements for receiving horizontally polarized radio waves. As described above, the first filament 12A of the hot-side second element 12 is an element for receiving a radio wave whose polarization plane is inclined.

  The antenna of the first embodiment improves the sensitivity of horizontal polarization in the low and middle bands of the terrestrial digital TV broadcast wave band received from all directions by arranging the hot-side first element 11 substantially horizontally. By arranging at least one of the two hot-side second elements 12 and 12 ′ substantially horizontally, the sensitivity of the horizontal polarization in the middle and high band of the terrestrial digital TV broadcast wave band received from all directions can be increased. Can be improved.

  Note that by arranging a plurality of hot-side second elements 12, 12 ', the directional characteristics of the vehicle in the horizontal direction are expanded, so that the receiving sensitivity can be further improved. For this reason, when installing the antenna of the first embodiment in a place where the radio wave environment is good, only one hot-side second element 12 may be arranged. On the other hand, when the antenna of the present embodiment is installed in a place where the radio wave environment is bad, a plurality of elements may be arranged substantially parallel to the hot-side second element 12.

  The ground side first elements 21 and 21 ′ are elements for receiving the low and middle horizontal polarization of the terrestrial digital TV broadcast wave band, like the hot side first element 11.

  Similar to the hot-side second elements 12 and 12 ', the ground-side first elements 21 and 21 are arranged substantially in parallel so that the antenna of the first embodiment can be used in the low and middle terrestrial digital TV broadcast wave bands. It is possible to improve the sensitivity to receive radio waves in all directions from all directions. For this reason, when the antenna of the present embodiment is installed in a place where the radio wave environment is good, only two ground-side first elements 21 and 21 'may be arranged. On the other hand, when the antenna of the present embodiment is installed in a place where the radio wave environment is bad, three or more elements may be arranged substantially parallel to the ground side first element 21.

  The ground-side second element 22 is an element for receiving radio waves in the mid-high range of the terrestrial digital TV broadcast wave band whose polarization plane is inclined due to the influence of reflection or the like.

  In the antenna of the present embodiment, a reactive capacity is generated between the hot side element group 10 and the body flange 2, but in order to prevent a decrease in antenna sensitivity due to an increase in the reactive capacity, the hot side element group 10 of the antenna is An appropriate distance from the body flange 2, for example, a distance that is so small that the ineffective capacity can be ignored is maintained. The reactive capacity is an electrostatic capacity corresponding to the magnitude of the reactive current generated on the ground side when the antenna is a high frequency circuit. The reactive capacity generated between the body flange 2 Reception sensitivity decreases.

  Further, by disposing the ground-side fourth element 24 between the body flange 2 and the hot-side feeding point 6, it is possible to absorb the reactive capacity generated between the antenna and the body flange 2, and the hot-side element group 10 is reduced, and the receiving sensitivity of the antenna is improved.

  As described above, according to the first embodiment, even when the corner portion of the window glass of the automobile is inclined or has a loose curve, it is disposed at a position along the body flange 2. An antenna can be provided.

  The antenna according to the first embodiment has high reception sensitivity in all directions and can receive horizontally polarized waves and radio waves with inclined polarization planes. Even so, good reception characteristics can be obtained. In addition, the reception sensitivity can be increased in a wide frequency band among the frequency bands defined for the radio waves to be received.

<Second Embodiment>
The antenna of the second embodiment includes a ground-side fifth element 25 instead of the ground-side third element 23 (see FIG. 1) of the first embodiment. One end of the ground side second element 22 of the antenna of the second embodiment is connected to the ground side feed point 7 and the ground side fifth element 25, and the other end is connected to the ground side first elements 21, 21 ′. Connected.

  Among the antennas of the second embodiment, the same configurations and functions as those of the antenna of the first embodiment described above are denoted by the same reference numerals, description thereof is omitted, and mainly different parts. explain.

  The ground-side fifth element 25 includes a fourth wire 25A on the feeding point side connected to the ground-side feeding point 7 and a fifth wire 25B connected to the other end of the fourth wire 25A on the feeding point side. It is comprised by. The other end of the fifth wire 25B is connected to the ground-side second element 22.

  The fourth filament 25 </ b> A extends toward the hot-side element group 10 so as to be away from the ground-side feeding point 7, and is disposed substantially parallel to the ground-side fourth element 24. The fifth filament 25B is disposed substantially parallel to the first filament 12A.

  As described above, in the antenna of the second embodiment, the fifth wire 25B is moved along the ground-side second element 22, and the length of the fourth wire 25A and the fifth wire 25B are increased. The impedance of the antenna can be adjusted by changing the position.

<Third Embodiment>
The antenna of the third embodiment is provided with a hot-side third element 13 connected to the hot-side feeding point 6 in the antenna of the second embodiment. The third hot-side element 13 is configured by a sixth wire 13A on the feeding point side connected to the hot-side feeding point 6 and a seventh wire 13B connected to the other end of the sixth wire 13A. . The sixth wire 13 </ b> A extends in a direction away from the ground side fourth element 24, and the seventh wire 13 </ b> B extends in the horizontal direction so as to approach the ground side element group 20.

  Note that, among the antennas of the third embodiment, the same configurations and functions as those of the antennas of the first and second embodiments described above are denoted by the same reference numerals, description thereof is omitted, and the main differences are noted. The part to perform is demonstrated.

  The length of the seventh filament 13B of the hot side third element 13 is set to be approximately the same as the length of the second filament 12B of the hot side second element 12.

  For this reason, in the antenna of the third embodiment, the reception frequency can be widened by adding the hot-side third element 13.

  The antenna of the third embodiment is obtained by adding the hot side third element 13 to the second embodiment, but adding the hot side third element 13 to the first embodiment. Also good.

<Fourth embodiment>
The antenna of the fourth embodiment is provided with a hot-side fourth element 14 in the antenna of the third embodiment. The hot-side fourth element 14 is disposed at a position substantially parallel to the second filament 12B ′, which is a horizontal portion of the hot-side second element 12, and is disposed in the vicinity of the extent that it can be electromagnetically coupled to the second filament 12B ′. The The length of the hot-side fourth element 14 is substantially the same as the length of the second filament 12B ′.

  Note that, among the antennas of the fourth embodiment, the same configurations and functions as those of the antennas of the first to third embodiments described above are denoted by the same reference numerals, description thereof is omitted, and mainly the differences. The part to perform is demonstrated.

  As described above, the antenna according to the fourth embodiment expands the directional characteristics of the vehicle in the horizontal direction by adding the hot-side fourth element 14, that is, the sensitivity in all directions can be improved. it can.

  Note that the antenna of the fourth embodiment includes the hot side third element 13 and the hot side fourth element 14, but the hot side fourth element 14 may be added to the first and second embodiments. Good.

<Installation of antenna on vehicle>
As shown in FIG. 5, a defogger 4 made up of a plurality of heating filaments is arranged in the center of the rear window glass 1. Both ends of the defogger 4 are connected to bus bars 5 and 5, and each bus bar 5 and 5 is connected to a power source and a ground, respectively. The rear window glass 1 is attached to the opening of the body flange 2. A ceramic base layer 3 is provided on the entire peripheral edge of the rear window glass 1 between the body flange 2 and the dotted line shown in FIG.

  The ceramic base layer 3 is formed by baking a screen-printed ceramic paste on the entire periphery on the surface of the rear window glass 1. As the ceramic paste, a paste made of low melting point glass powder and pigment may be used.

  The antenna 8 of this embodiment is installed along the inclined body flange 2 at the upper left and upper right of the rear window glass 1. The hot-side feeding point 6, the ground-side feeding point 7, and the ground-side fourth element 24 are preferably arranged on the ceramic base layer 3 in order to improve the appearance. The element disposed on the ceramic base layer 3 is formed by baking a paste-like conductor on the ceramic base layer 3 provided on the inner surface of the glass.

  The hot-side feeding point 6, the ground-side feeding point 7, and the ground-side fourth element 24 are arranged on the ceramic base layer 3 so that the antenna is covered with the black ceramic base layer 3 even when viewed from the outside. Can improve the appearance.

  In addition, although the body flange 2 which has the side where the upper left part and upper right part inclined diagonally was illustrated, even when the upper left part and upper right part of the body flange 2 are loose curves, the body flange 2 and the ground side fourth element 24 By arranging the ground side fourth element 24 along the curves of the upper left part and the upper right part of the body flange 2 so as to be capacitively coupled, the present invention can be applied.

<Antenna characteristics>
In FIG. 6, the frequency characteristic of the antenna gain according to the embodiment of the present invention is indicated by a thick solid line, and the characteristic of the proportional antenna shown in FIG.

  A proportional antenna 100 shown in FIG. 8 includes a hot side element group including a hot side first element 101, a hot side second element 102, a hot side third element 103, and a hot side fourth element 104, and a hot side element group. A ground side element group including a hot side feed point 105A, a ground side first element 106, a ground side second element 107, a ground side third element 108 and a ground side fourth element 109, and a ground side element group; A ground-side feeding point 105B to be connected is provided.

  The first hot-side element 101 and the second hot-side element 102 are connected to the hot-side feeding point 105A and extend in parallel. The hot side third element 103 and the hot side fourth element 104 are connected to the hot side feeding point 105 </ b> A and extend in a direction perpendicular to the hot side first element 101. The hot side second element 102 and the hot side third element 103 are bent at substantially right angles in the middle.

  The ground side first element 106 and the ground side second element 107 are connected to the ground side feeding point 105B and extend in parallel. The ground side third element 108 and the ground side fourth element 109 are connected to the ground side feeding point 105 </ b> B and extend in a direction perpendicular to the ground side first element 106.

  As shown in FIG. 6, the first embodiment of the present invention has a higher sensitivity (gain) than the antenna 100 in the low to middle range (500 MHz or higher) to high range of the terrestrial digital TV broadcast wave band. can get.

  7 shows the directivity of the antenna according to the embodiment of the present invention by a thick solid line, and shows the directivity of the proportional antenna shown in FIG. 8 by a thin solid line.

  FIG. 7 is an explanatory diagram showing horizontal directivity characteristics of the vehicle when the antenna according to the embodiment of the present invention is mounted on the rear window glass 1 of the vehicle (see FIG. 5).

  As shown in FIG. 7, the antenna according to the first embodiment of the present invention has isotropic orientation in all directions on the horizontal plane. Further, higher sensitivity can be obtained in almost all directions than the proportional antenna 100. For this reason, according to the antenna of the embodiment of the present invention, radio waves in the UHF band coming from various directions can be reliably captured.

  As described above, the embodiment of the present invention has been described by taking the antenna of the terrestrial digital broadcast wave (470 to 710 MHz) and the UHF television broadcast wave in Japan as an example. For example, the present invention can also be applied to UHF band terrestrial digital broadcast waves (470 to 862 MHz) in European countries and VHF band terrestrial digital broadcast waves (174 to 862 MHz) in European countries.

  Moreover, although the embodiment of the present invention has been described by taking a glass antenna for an automobile as an example, the present invention can also be applied to an antenna having a pattern formed on an insulator or a dielectric. For example, a synthetic resin sheet provided with the pattern of the present invention may be attached to a glass surface.

  The antenna of the present embodiment described above is a horizontally polarized antenna for receiving TV broadcast waves, but the antenna of the present embodiment is tilted 90 degrees clockwise (or counterclockwise) Another antenna for mobile communication can be configured as the vertically polarized antenna.

  Further, when a resin vehicle interior material covering all or part of the antenna element, the conductor portion, and the feeding point is provided, the appearance from the inside of the vehicle is improved.

DESCRIPTION OF SYMBOLS 1 Rear window glass 2 Body flange 3 Ceramic base layer 4 Defogger 5 Bus bar 6 Hot side feeding point 7 Ground side feeding point 8 Antenna 10 of embodiment of this invention Hot side element group 11 Hot side 1st element 12, 12 'Hot Side 2nd element 12A, 12A '1st line 12B, 12B' 2nd line 13 Hot side 3rd element 13A 6th line 13B 7th line 14 Hot side 4th element 20 Earth side element group 21, 21 ′ Ground side first element 22 Ground side second element 23 Ground side third element 24 Ground side fourth element 25 Ground side fifth element 25A 4th line 25B 5th line

Claims (6)

A glass antenna comprising a hot side element and a ground side element,
The hot side element is connected to a hot side feeding point, and includes a hot side first element and a hot side second element,
The ground side element is connected to a ground side feeding point, and includes a ground side first element, a ground side second element, a ground side third element, and a ground side fourth element,
The first hot-side element is connected to the hot-side feeding point and extends in a horizontal direction so as to be away from the ground-side feeding point,
The second hot-side element is connected to the hot-side power feeding point, and extends in a direction away from the ground-side fourth element, and a second wire disposed substantially parallel to the hot-side first element. Including the filaments,
The ground side fourth element is disposed between the flange and the ground side feeding point,
The ground side first element, the ground side second element, and the ground side third element are arranged at positions opposite to the ground side fourth element and the ground side feeding point,
The ground side first element extends in a horizontal direction so as to approach the hot side second element,
The ground side second element is connected to the ground side first element and arranged in parallel with the ground side fourth element;
The ground side third element extends in a direction away from the ground side fourth element from the ground side feeding point, and the other end is connected to the ground side second element,
The ground-side fourth element is connected to the ground-side feeding point and is disposed obliquely along the body flange between the hot-side feeding point and the body flange, thereby capacitively coupling with the body flange. A glass antenna.   The glass antenna according to claim 1, wherein the second hot-side element includes a plurality of second filaments having different lengths.   The glass antenna according to claim 1, wherein the second hot-side element includes two or more filaments arranged in parallel at positions close to each other so as to be electromagnetically coupled to each other.   4. The glass according to claim 1, wherein the ground-side first element includes two or more filaments arranged in parallel at positions close to each other so as to be electromagnetically coupled to each other. antenna. The ground side third element is:
A fourth wire extending from the ground side feeding point so as to approach the hot side feeding point in parallel with the ground side fourth element;
5. The wire according to claim 1, further comprising a fifth wire that extends in a direction away from the ground-side fourth element and connects the ground-side second element and the fourth wire. Glass antenna described in one. The hot side element further includes a hot side third element,
The third hot-side element is connected to the hot-side feeding point, and extends in a horizontal direction so as to approach the ground-side element, and a sixth line extending away from the ground-side fourth element. The glass antenna according to any one of claims 1 to 5, further comprising a filament.

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