CN101257143B - Back ring type coupled aerial - Google Patents
Back ring type coupled aerial Download PDFInfo
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- CN101257143B CN101257143B CN2007100376965A CN200710037696A CN101257143B CN 101257143 B CN101257143 B CN 101257143B CN 2007100376965 A CN2007100376965 A CN 2007100376965A CN 200710037696 A CN200710037696 A CN 200710037696A CN 101257143 B CN101257143 B CN 101257143B
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- 239000004020 conductor Substances 0.000 claims abstract description 79
- 230000008878 coupling Effects 0.000 claims abstract description 73
- 238000010168 coupling process Methods 0.000 claims abstract description 73
- 238000005859 coupling reaction Methods 0.000 claims abstract description 73
- 239000000758 substrate Substances 0.000 claims description 15
- 230000001939 inductive effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000012550 audit Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention provides a loop type coupling antenna, which includes: a feed-in wire, a coupling conductor, a first coupling part, a second coupling part, a second conductor and a ground surface, one end of the coupling conductor belongs to the first coupling part, another end belongs to the second coupling part; the feed-in wire connects with the first coupling part for providing a feed-in signal to the first coupling part; the feed-in signal couples to the second coupling part through the coupling conductor; one end of the second conductor connects with the second coupling part, another end connects with the ground surface that conduct signal of the second coupling part to the ground surface by using the second conductor. Impedance match can be adjusted efficiently by using the first coupling part, and antenna operation frequency width can be increased. The second coupling part and the second conductor reduce resonant frequency, and shorten wavelength of resonant path center frequency.
Description
Technical field
The present invention is a kind of back ring type coupled aerial, especially means a kind of antenna with two inductive couplings unit.
Background technology
The wireless communication transmission development of technology; Make the function of various relevant auxiliary products advanced further; Particularly, often influence the sales volume of manufacturer's product on market, how to effectively integrate antenna multiband transmission usefulness about the efficiency of transmission and the dimensional requirement of antenna; Dwindle antenna simultaneously in electronic installation internal configurations space, become the important topic of the positive seeking breakthrough of each relevant dealer.
For effectively reducing the antenna configurations size; Improve the signal conduction efficiency simultaneously; See also Fig. 1; Be the schematic perspective view of United States Patent (USP) bulletin case US6081242 " antenna-matching circuit ", comprise: a tellite 24, an antenna pad 40, one first inductance 34, one second inductance 38 and a ground plane 42; Its antenna pad 40 is positioned at tellite 24 surfaces, and is coupled in this first inductance 34, and its first inductance, 34 ends form an electric capacity 26, the second inductance 38 the other end with second inductance, 38 1 ends and then are connected in ground plane 42.Above-mentioned design increases electrical couplings efficient by sinuous inductance; And shorten antenna configurations length, though can reach the purpose of multi-band operation and size reduction, because its capacitive coupling area is narrow; And its antenna operation frequency range also has certain upper limit, can't be applied to really in the middle of the various electronic products.
Because the problem of known techniques, to dwindling antenna overall structure size, and improve antenna operation frequency range scope, antenna all can be applied in the middle of the various electronic products, become the target that industry is actively improved then.
Summary of the invention
The object of the invention system provides a kind of back ring type coupled aerial, produces the electrical couplings effect by first coupling part, effectively adjusts impedance matching, improves the antenna operation frequency range.
Another object of the present invention system provides a kind of back ring type coupled aerial, utilizes second coupling part and second conductor to reduce antenna resonance frequency, shortens the wavelength of resonance path centre frequency, significantly reduces the antenna module size.
Another purpose of the present invention is that a kind of back ring type coupled aerial is provided, and utilizes back ring type inductive coupling circuit, shortens the aerial signal transmission path, effectively reduces the antenna member configuration space.
For reaching above-mentioned purpose, the present invention system is a kind of back ring type coupled aerial, and comprise: a feed-in line, a substrate, a coupling conductors, one first coupling part, one second coupling part, one second conductor and a ground plane, its substrate have a surface; These coupling conductors both ends can be distinguished into first coupled zone and second coupled zone; First coupling part comprises a feed-in conductor and first coupled zone, and forms a gap between the two; Second coupling part comprises this second coupled zone and one first conductor, and has a spacing between the two.Wherein this first coupling part and second coupling part are in substrate surface; This feed-in line is connected in the feed-in conductor of first coupling part; Utilize the feed-in line that the FD feed source is transferred to the feed-in conductor; And couple a signal to first coupled zone of opposite side position with the capacitive sensing coupled modes; Thereby via coupling conductors signal is conducted to second coupled zone of the other end, see through between second coupled zone and first conductor again between apart from generation capacitive coupling inductive effect, couple a signal to first conductor of second coupling part; Second conductor, one end is connected in first conductor, and the other end then is connected in ground plane, utilizes second conductor that the signal of first conductor is conducted to ground plane.Therefore by the input of feed-in conductor, capacitive sensing coupled modes conduction to the second conductor via first coupling part and second coupling part is connected to ground plane again, forms a back ring type coupled aerial with FD feed in the present invention.
The feed-in conductor and the first coupled zone coupled electric signal that the present invention utilizes first coupling part to be comprised; By the area that increases the gap contact; Adjustment capacitive sensing coupling effect can change the input impedance of antenna, makes it have milder impedance variations; Promote the operation frequency range of impedance matching and system, this gap also can adopt welding one chip capacity assembly to change its capacitance simultaneously; Between then utilizing between second coupled zone and first conductor of second coupling part apart from configuration; Make this second coupled zone and the first conductor side relative spacing length longer; Also can produce bigger capacitive coupling induction amount, reach the purpose that significantly reduces antenna resonance frequency, make the resonance path contraction in length be centre frequency wavelength 1/2nd; Significantly shorten antenna size through this mode, reduce antenna at the inner configuration space of electronic installation; In addition, this first conductor has rivulose structure in the end near this second coupled zone, also can increase current path, reaches the purpose of dimension shrinksization; In addition; It is the less and comparatively intensive serpentine path of spacing that second conductor is compared first conductor, can form an inductive component, by adjustment this path clearance, width and total length; Can change its inductance value; Also can reach the purpose of adjustment Antenna Impedance Matching, the condensive reactance that aforesaid first coupling part of arranging in pairs or groups produces can make antenna reach good impedance matching.First conductor, second conductor and ground plane system are positioned at the opposite side position of feed-in conductor and coupling conductors simultaneously, can shorten the antenna substrate configured length, increase the arrangement of components convenience, make its structure can be widely used in the electronic installation inside of various different sizes.
For making audit crew further understand the present invention's detailed content, enumerate now following preferred embodiment explanation as after.
Description of drawings
Fig. 1 is the schematic perspective view of United States Patent (USP) bulletin case US6081242 " antenna-matching circuit ".
Fig. 2 is the schematic perspective view of first embodiment of the invention
Fig. 3 is the circuit diagram of first embodiment of the invention.
Fig. 4 returns loss (Return loss) metric data sketch map for first embodiment of the invention.
Fig. 5 is the schematic perspective view of second embodiment of the invention.
Fig. 6 is the schematic perspective view of third embodiment of the invention.
Embodiment
See also Fig. 2, the schematic perspective view for first embodiment of the invention comprises: a feed-in line 21, a substrate 22, a coupling conductors 232, one first coupling part 23, one second coupling part 24, one second conductor 25 and a ground plane 26.This substrate 22 has a surface 221; This coupling conductors 232 is distinguished into one first coupled zone 232a and one second coupled zone 232b; First coupling part 23 comprises: a feed-in conductor 231 and the first coupled zone 232a, and the first coupled zone 232a and 231 formation of feed-in conductor, one gap; Second coupling part 24 is this second coupled zone 232b and 241 compositions of one first conductor, and has a spacing between first conductor 241 and the second coupled zone 232b.
Wherein this first coupling part 23 and second coupling part 24 are positioned at substrate 22 surfaces 221, and substrate 22 length are about 76mm, and width is about 9mm; Thickness is about 0.2mm, and feed-in line 21 is connected in the feed-in conductor 231 of first coupling part 23, via feed-in line 21 the FD feed source is transferred to feed-in conductor 231; Feed-in conductor 231 length are about 15mm, and width is about 1mm, and form the gap with the first coupled zone 232a; Gap width utilizes the electrical couplings mode to couple a signal to the first coupled zone 232a of opposite side position less than 1mm, and the first coupled zone 232a length is about 15mm; Width is about 1mm, via coupling conductors 232 signal is conducted to the second coupled zone 232b of the other end, and the second coupled zone 232b length is about 55mm; Width is about 2mm; See through between 241 of the second coupled zone 232b and first conductors apart from producing the electrical couplings effect, couple a signal to first conductor 241 of second coupling part 24, and distance is about 0.5mm between this second coupled zone 232b and this first conductor 241; This first conductor 241 is to be serpentine shape and total path length is about 21mm; Its end is tabular; About 44mm of the elongation that renews and width are about 7mm and have an end 243 and be connected in second conductor 25, and its second conductor, 25 the other end then are connected in ground plane 26, the second conductors 25 total path length and are about 63mm; This second conductor 25 utilizes signal guidance to the ground plane 26 of inductance conduction pattern with first conductor 241, and ground plane 26 length are about 10mm.
The feed-in conductor 231 and the first coupled zone 232a coupled electric signal that present embodiment utilizes first coupling part 23 to form; Using increases the gap contact area, improves capacitive sensing coupling amount, makes antenna have milder impedance variations; Promote the operation frequency range of impedance matching and system; And utilize between 241 of the second coupled zone 232b and first conductors of second coupling part 24 apart from configuration, reach the purpose that reduces antenna resonance frequency by increasing capacitive coupling induction amount, make the resonance path contraction in length be centre frequency wavelength two/; Significantly shorten antenna size through this mode; Reduce antenna at the inner configuration space of electronic installation, first conductor 241, second conductor 25 and ground plane 26 are to be positioned at feed-in conductor 231 and coupling conductors 232 opposite side positions simultaneously, shorten the antenna substrate configured length; Increase the arrangement of components convenience, make its structure can be widely used in the electronic installation inside of various different sizes.
See also Fig. 3; Circuit diagram for first embodiment of the invention; Its back ring type coupled aerial circuit has a signal source 31; See through signal source 31 conductive antennas high-frequency signals; Couple a signal to the first coupled zone 232a of coupling conductors 232 via one first capacitor cell C1 with the electrical couplings mode, the second coupled zone 232b that sees through coupling conductors 232 again couples a signal to first conductor 241 via one second capacitor cell C2, and the second last conductor 25 utilizes an inductance unit L1 to conduct to ground plane 26 with electric induction mode signal; Wherein this first capacitor cell C1 and inductance unit L1 make antenna obtain the operation of wideband in order to adjust the impedance matching of this antenna; Increase by the second capacitor cell C2 in addition, can significantly reduce by 1/2nd wavelength of resonance path to the centre frequency of antenna.
See also Fig. 4; Return loss (Return loss) metric data sketch map for first embodiment of the invention; S1 is under the definition of VSWR2:1 for its antenna operation frequency range scope, and (445～875MHz), its frequency range can be contained DTV UHF band system band (470～870MHz) easily can to reach 430MHz; Data show that the present invention has possessed low reflection loss and transmission frequency characteristic widely, has had preferable impedance matching and operation frequency range in fact thus.
See also Fig. 5; Schematic perspective view for second embodiment of the invention; Present embodiment and above-mentioned first embodiment are roughly the same, and its difference is in gap configuration one capacitance component 234 between the feed-in conductor 231 and the first coupled zone 232a, utilize welding manner that capacitance component 234 is welded between the feed-in conductor 231 and the first coupled zone 232a; Make the signal source of feed-in line 21 transmission transfer to the first coupled zone 232a through capacitance component 234; See through the program that capacitance component 234 is directly welded in first coupling part, 23 gaps, the Adjustment System capacitance increases impedance matching and operation frequency range.
See also Fig. 6; Schematic perspective view for third embodiment of the invention; Present embodiment and above-mentioned first embodiment are roughly the same, and its difference is in the first coupled zone 232a of coupling conductors 232 and is positioned at substrate 22 bottom surfaces 222, see through a junction 235 and connect the first coupled zone 232a and coupling conductors 232; Make feed-in conductor 231 be coupled to the coupling conductors 232 of the signal of the first coupled zone 232a via connecting portion 235 conductings to substrate 22 surfaces 221; Effectively increase capacitive coupling inductive effect contact area through this configuration, and then improve capacitive coupling induction amount, and promote antenna module configuration elasticity.
The present invention has met patent requirement; Actual characteristics with novelty, progressive and application in industry value; Right embodiment is not the scope in order to limitation the present invention; Anyly be familiar with various changes and the retouching that this art is done, under the spirit that does not break away from the present invention and definition, all in interest field of the present invention.
Claims (5)
1. a back ring type coupled aerial is characterized in that, this back ring type coupled aerial comprises: a feed-in line; One substrate has a surface; One coupling conductors has one first coupled zone and one second coupled zone; One first coupling part is positioned at this substrate surface, comprises: a feed-in conductor is connected with this feed-in line; This first coupled zone is positioned at the direction of this feed-in conductor opposite side, between the two distance one gap; One second coupling part is positioned at this substrate surface, comprises: this second coupled zone; One first conductor is positioned at the direction of this second coupled zone opposite side, between the two distance one spacing; One second conductor is connected in this first conductor, one end; And a ground plane, be connected in this second conductor the other end.
2. back ring type coupled aerial according to claim 1 is characterized in that, this first coupling part and second coupling part are capacitive component.
3. back ring type coupled aerial according to claim 1 is characterized in that, this second conductor is an inductive component.
4. back ring type coupled aerial according to claim 1 is characterized in that, configuration one capacitance component between this first coupled zone and feed-in conductor.
5. back ring type coupled aerial according to claim 1 is characterized in that, this first coupled zone is positioned at substrate bottom surface, and is connected with second coupled zone by a junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100376965A CN101257143B (en) | 2007-02-26 | 2007-02-26 | Back ring type coupled aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100376965A CN101257143B (en) | 2007-02-26 | 2007-02-26 | Back ring type coupled aerial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101257143A CN101257143A (en) | 2008-09-03 |
| CN101257143B true CN101257143B (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100376965A Expired - Fee Related CN101257143B (en) | 2007-02-26 | 2007-02-26 | Back ring type coupled aerial |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5645118B2 (en) * | 2010-11-24 | 2014-12-24 | 三菱マテリアル株式会社 | Antenna device |
| TW201320468A (en) * | 2011-11-03 | 2013-05-16 | Compal Electronics Inc | Slot antenna |
| US9425496B2 (en) * | 2012-09-27 | 2016-08-23 | Apple Inc. | Distributed loop speaker enclosure antenna |
| CN107871931B (en) * | 2016-09-26 | 2021-06-15 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with same |
| CN106654560A (en) * | 2016-12-26 | 2017-05-10 | 广东中元创新科技有限公司 | Small double-frequency omni-directional antenna |
| CN115579614A (en) * | 2021-06-21 | 2023-01-06 | Oppo广东移动通信有限公司 | Antenna components and electronics |
| CN114171900B (en) * | 2021-10-27 | 2022-11-22 | 荣耀终端有限公司 | Terminal antenna and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6677901B1 (en) * | 2002-03-15 | 2004-01-13 | The United States Of America As Represented By The Secretary Of The Army | Planar tunable microstrip antenna for HF and VHF frequencies |
| CN1599130A (en) * | 2003-09-16 | 2005-03-23 | 株式会社电装 | Antenna device |
-
2007
- 2007-02-26 CN CN2007100376965A patent/CN101257143B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6677901B1 (en) * | 2002-03-15 | 2004-01-13 | The United States Of America As Represented By The Secretary Of The Army | Planar tunable microstrip antenna for HF and VHF frequencies |
| CN1599130A (en) * | 2003-09-16 | 2005-03-23 | 株式会社电装 | Antenna device |
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| CN101257143A (en) | 2008-09-03 |
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