Be applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone
Technical field
The present invention relates to the wireless communication field of intelligent movable wearable device, particularly a kind of fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone.
Background technology
In recent years, the quantity of intelligent movable wearable device presents explosive growth, and product mainly concentrates on bracelet and Waist watch type mobile phone two class.Relative to the bracelet kind equipment of function singleness, Waist watch type mobile phone, because possess the application that can realize novel human-computer interaction technology, therefore progressively presents the trend of unified wrist-wearable device.Current Waist watch type mobile phone major part is still arranged in pairs or groups by the short-range communication technique such as bluetooth, WiFi and smart mobile phone and is used, and the functions such as the communication of smart mobile phone, amusement is extended on Waist watch type mobile phone and uses.Consumer's Experience is still subject to a definite limitation.Therefore on Waist watch type mobile phone, add the development priority that normal mobile communication function will be next stage.Because the volume of Waist watch type mobile phone limits, conventional band antenna to be placed therein, such as be with the frequency ranges such as GSM/CDMA, technically still have larger difficulty.
In addition, the Waist watch type mobile phone of metal current texture is welcome because fashionable appearance is more subject to user than plastic meter shell mobile phone.But the existence of metal shell seriously can reduce antenna radiation performance.In order to eliminate the impact of metal pair aerial signal, in Cell Phone Design industry, common practices comprises:
1. metal edge frame is cracked, using the part participation radiation of metal edge frame as antenna.But this way defectiveness: is crack to destroy the aesthetic feeling of overall appearance; Two is to cause antenna performance sharply to worsen when people holds gap position.
2., directly to metal edge frame feed, form aerial radiation by the introducing of different earth point and the gap between adjustment frame and pcb board.
But on the Waist watch type mobile phone of small volume, these two kinds of ways all cannot accomplish the antenna of general communication frequency range.
Summary of the invention
The present invention carries out to solve the problem, and object is to provide a kind of impact avoiding metal shell completely, ensures the fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone of antenna performance.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, has such feature, comprising: metal watch shell; Pcb board, is arranged in metal watch shell, has: headroom district and wired circuit district; Feed source, is distributed in the border in headroom district and wired circuit district; Long watchband, is connected with the side of metal watch shell, near headroom district; Short watchband, is connected with the opposite side of metal watch shell, near wired circuit district; And antenna, be arranged on pcb board with in long watchband, in short watchband.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, has such feature: wherein, antenna, has: feed part, is arranged on the side, headroom district on pcb board; Grounded part, is arranged on the side, wired circuit district on pcb board, stretches in short watchband; And radiant section, divide with current feed department and be connected, stretch in long watchband.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, has such feature: wherein, radiant section, has: radiating element, divide be connected with current feed department, stretch in long watchband; And second radiating element, divide with current feed department and be connected, stretch in long watchband.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, have such feature: wherein, long watchband, has: long watchband internal layer, and one end is connected with metal watch shell; And long watchband is outer, one end is connected with metal watch shell, and the other end is connected with the other end of long watchband internal layer, and long watchband internal layer and the outer field centre of long watchband form interlayer, are provided with radiant section in interlayer.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, have such feature: wherein, short watchband, has: short watchband internal layer, and one end is connected with metal watch shell; And short watchband is outer, one end is connected with metal watch shell, and the other end is connected with the other end of short watchband internal layer, and short watchband internal layer and the outer field centre of short watchband form interlayer, are provided with grounded part in interlayer.
The fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone provided by the invention, has such feature, comprising: a plurality of screw device, be arranged on the junction of long watchband, short watchband and metal watch shell.
Invention effect
According to the fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone involved in the present invention, by aerial position is shifted out metal shell, directly avoid metal shell impact, without the need to doing the variation of any diseases caused by external factors to metal shell, utilize watchband inner space as a part for antenna, by arranging the radiating element of different length, different resonance band can be regulated according to real needs, under maintenance product appearance prerequisite, fully solving Waist watch type mobile phone aerial signal problem.
Accompanying drawing explanation
Fig. 1 is the present invention's 3D structural representation being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment;
Fig. 2 is the present invention's fragmentary sectional view being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment;
Fig. 3 is the present invention's planar structure schematic diagram being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment;
Fig. 4 is the oscillogram of the present invention's antenna return loss in an embodiment; And
Fig. 5 is the datagram of the present invention's antenna radiation efficiency in an embodiment.
Embodiment
Referring to drawings and Examples, the involved in the present invention fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone is explained in detail.
Fig. 1 is the present invention's 3D structural representation being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment.
Fig. 2 is the present invention's fragmentary sectional view being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment.
Fig. 3 is the present invention's planar structure schematic diagram being applicable to the fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone in an embodiment.
As shown in Figure 1, Figure 2 and Figure 3, the fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone has: metal watch shell 1, pcb board 2, feed source 3, long watchband 4, short watchband 5, screw device 6 and antenna.
The inside of metal watch shell 1 is provided with pcb board 2, and pcb board 2 has: headroom district 2-1 and wired circuit district 2-2.Headroom district 2-1 is disposed adjacent with wired circuit district 2-2, and the area of headroom district 2-1 is less than wired circuit district 2-2.Wired circuit district 2-2 is used for the wiring of circuit.
Feed source 3 is distributed in the border of headroom district 2-1 and wired circuit district 2-2.
Long watchband 4 is connected with the side of metal watch shell 1 by two symmetrically arranged screw devices 6, and headroom district 2-1 is near long watchband 4 side.Long watchband 4 has: long watchband internal layer 4-1 and the outer 4-2 of long watchband.
One end of long watchband internal layer 4-1 is connected with metal watch shell 1.One end of the outer 4-2 of long watchband is connected with metal watch shell 1, and the other end is connected with the other end of long watchband internal layer 4-1.Long watchband internal layer 4-1 and the outer 4-2 of long watchband forms an interlayer.
Short watchband 5 is connected with the opposite side of metal watch shell 1 by two symmetrically arranged screw devices 6, and wired circuit district 2-2 is near short watchband 5 side.Short watchband 5 has: short watchband internal layer 5-1 and the outer 5-2 of short watchband.
One end of short watchband internal layer 5-1 is connected with metal watch shell 1.One end of the outer 5-2 of short watchband is connected with metal watch shell 1, and the other end is connected with the other end of short watchband internal layer 5-1.Short watchband internal layer 5-1 and the outer 5-2 of short watchband forms an interlayer.
Four screw devices between two a pair, are separately positioned on the junction of long watchband 4, short watchband 5 and metal watch shell 1.
Antenna is made up of feed part 7-1, grounded part 7-2 and radiant section 7-3, is arranged on pcb board 2, in long watchband 4, in short watchband 5.
Feed part 7-1 is arranged on the 2-1 side, headroom district on pcb board 2.Grounded part 7-2 is arranged on the 2-2 side, wired circuit district on pcb board 1, stretches in short watchband 5, clamps fixing by short watchband internal layer 5-1 and the outer 5-2 of short watchband.
Radiant section 7-3 is connected with feed part 7-1, stretches in long watchband 4, clamps fixing by field watchband internal layer 4-1 and the outer 4-2 of long watchband.Feed part 7-1 plays the effect connecting feed source 3 and radiant section 7-3, connecting with welding manner in the present embodiment.Radiant section 7-3 has:
First radiating element 7-3-1 is connected with feed part 3, stretches in long watchband 4.Second radiating element 7-3-2 is connected with feed part 7-1, stretches in long watchband 4.First radiating element 7-3-1 and the second radiating element 7-3-2 be arranged in parallel, and the first radiating element 7-3-1 is slightly longer than the second radiating element 7-3-2.
In the present embodiment, first radiating element 7-3-1 and grounded part 7-2 co-controlling low-frequency resonant, the second radiating element 7-3-2 controls high-frequency resonant, slots between the first radiating element 7-3-1 and the second radiating element 7-3-2, regulate groove depth and width, the 3rd resonance point can be coupled out.In the present embodiment, the 3rd resonance point is set to the frequency of GPS.
Fig. 4 is the oscillogram of the present invention's antenna return loss in an embodiment.
Fig. 5 is the datagram of the present invention's antenna radiation efficiency in an embodiment.
As shown in Figure 4 and Figure 5, the fixed watchband antenna structure being applicable to all-metal watchcase Waist watch type mobile phone meets actual communication need all completely in CDMA800, GPS, BT & WiFi tri-frequency range intervals.
The effect of embodiment and effect
The fixed watchband antenna structure of all-metal watchcase Waist watch type mobile phone is applicable to involved by the present embodiment, by aerial position is shifted out metal shell, directly avoid metal shell impact, without the need to doing the variation of any diseases caused by external factors to metal shell, utilize watchband inner space as a part for antenna, by arranging the radiating element of different length, different resonance band can be regulated according to real needs, under maintenance product appearance prerequisite, fully solving Waist watch type mobile phone aerial signal problem.
Above-mentioned execution mode is preferred case of the present invention, is not used for limiting the scope of the invention.