CN102751590A - Fractal yagi printed antenna of coplanar waveguide feed - Google Patents
Fractal yagi printed antenna of coplanar waveguide feed Download PDFInfo
- Publication number
- CN102751590A CN102751590A CN2012102571234A CN201210257123A CN102751590A CN 102751590 A CN102751590 A CN 102751590A CN 2012102571234 A CN2012102571234 A CN 2012102571234A CN 201210257123 A CN201210257123 A CN 201210257123A CN 102751590 A CN102751590 A CN 102751590A
- Authority
- CN
- China
- Prior art keywords
- metal floor
- printed
- antenna
- fractal
- form metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The invention relates to a fractal yagi printed antenna of coplanar waveguide feed, which relates to a yagi printed antenna, and in particular to a fractal yagi printed antenna of coplanar waveguide feed. The invention aims at solving at solving the problems of the miniaturization and mass production of the antenna and the integration of a communication circuit caused by the large and complicated size of a guide antenna. The fractal yagi printed antenna is characterized in that a first printed metal floor board and a second printed metal floor board are arranged on the lower part of one side surface of a medium plate in a linear way, a guide device, an active vibrator and a reflector are sequentially installed on one side surface of the medium plate from left to right, both a left arm and a right arm on the lower part of the active vibrator are arranged between the first printed metal floor board and the second printed metal floor board, the lower part of the guide device is connected with the first printed metal floor board into a whole, the lower part of the reflector is connected with the second printed metal floor board into a whole, and a coplanar waveguide feed port is arranged between the first printed metal floor board and the second printed metal floor board. The fractal yagi printed antenna is used for the technical field of radio.
Description
Technical field
The present invention relates to a kind of Yagi spark gap printed antenna, be specifically related to a kind of fractal Yagi spark gap printed antenna of coplanar wave guide feedback.
Background technology
Guide antenna into and be called Yagi antenna or yagi-uda again; It is a kind of directional radiation antenna; Usually constitute by an active dipole, one or two reflector and several directors, utilize electric current that active dipole responds to and active dipole acting in conjunction and realize directed radiation on director and reflector.Since nineteen twenty-eight by since the Yagi spark gap show of northeastern Japan university time and the space Tian Tailang two people invention, obtained application widely in radio communication field and field of radar.Along with development of Communication Technique, many kinds of forms have appearred in this type antenna, and mainly be divided into two big types: traditional metal cylinder vibrator type is guided the antenna of antenna and printing form into.Traditional metal cylinder vibrator type is guided antenna into now still in field extensive uses such as TV, radars, and main feature is that the director number is more, and gain is high, but comparatively huge and complicated, is unfavorable for miniaturization and batch process; The antenna of guiding into of printing form comprises guiding antenna into and being printed on one side the antenna of guiding into of form of printed on both sides form; Main feature is simple in structure; But feed is often bigger; The gain of wanting to reach higher just must further increase the director number, can cause antenna size to become big, is unfavorable for the miniaturization with the integrated and equipment of telecommunication circuit.
Summary of the invention
The present invention is comparatively huge and complicated for solving the existing antenna volume of guiding into, is unfavorable for miniaturization and batch process, and with the integrated problem of telecommunication circuit, and then a kind of fractal Yagi spark gap printed antenna of coplanar wave guide feedback is proposed.
The present invention addresses the above problem the technical scheme of taking to be: the present invention includes active dipole, director, reflector, the first printed form metal floor, dielectric-slab, coplanar wave guide feedback port and the second printed form metal floor; The first printed form metal floor, the second printed form metal floor are the bottom that yi word pattern is arranged on dielectric-slab one side surface; Director, active dipole, reflector are installed on the side surface of dielectric-slab from left to right successively; The left arm of active dipole bottom and right arm are all between the first printed form metal floor and the second printed form metal floor; And the left arm of active dipole bottom contacts with the lower limb of dielectric-slab one side surface; The right arm of active dipole bottom and the second printed form metal floor link into an integrated entity; The bottom of director and the first printed form metal floor link into an integrated entity; The bottom of reflector and the second printed form metal floor link into an integrated entity, and the coplanar wave guide feedback port is arranged between the first printed form metal floor and the second printed form metal floor, and the coplanar wave guide feedback port is positioned at the bottom of dielectric-slab one side surface.
The invention has the beneficial effects as follows: can realize higher gain, the size of antenna is further reduced, in addition on the basis of printed antenna; This antenna adopts the coplanar wave guide feedback mode, makes full use of antenna space, and feed is compact; Antenna adopts the structure that is printed on one side, and is beneficial to the integrated of antenna.Under the same frequency, height and traditional Yagi antenna size compared of the Yagi antenna that the present invention proposes can reduce 74.3%, and impedance bandwidth reaches 2.8% relatively, and gain is all above 4dB in the impedance bandwidth; Feed compact of the present invention, the antenna space that makes full use of has the effect of good miniaturization, and feed structure is a coplanar wave guide feedback, goes for traditional feeder line feeds such as coaxial line, also goes for modern integrated transmission-line feed; Antenna proposed by the invention is the circuit that is printed on one side, and in production in enormous quantities, can practice thrift cost 40-50%, can produce economic benefit significantly; Single sided board is compared with the double sided board that double sided board especially has via hole, will significantly improve stability; Antenna applications proposed by the invention have a type metal floor of imaging plane effect; With must place the plate structure flatly of antenna below to become the metal floor of the planar structure on antenna perpendicular to antenna plane in the past, make that antenna can complanation; The present invention adopts fractal technology in addition; Through utilizing the non-polarized director space of antenna, do not increasing the electric size that has increased antenna under the antenna polarization size situation, reduced the actual height of antenna; Simultaneously still guarantee the gain that antenna is higher, also helped the miniaturization of antenna.Under the same frequency, Yagi antenna and traditional Yagi antenna size compared that the present invention proposes can reduce 74.3%; Antenna according to the invention is lower than-10dB at the frequency band internal reflection coefficient of 887MHz-912MHz, and relative bandwidth is 2.8%, and maximum gain has reached 4.5dB, compares performance with traditional antenna and does not descend.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention, and Fig. 2 is an antenna reflection coefficient | S
11| resolution chart, Fig. 3 be antenna in the E of typical frequency 900MHz face directional diagram test result, Fig. 4 is that antenna is in the H of typical frequency 900MHz face directional diagram test result.
Embodiment
Embodiment one: combine Fig. 1 that this execution mode is described; The fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of this execution mode comprises active dipole 1, director 2, reflector 3, the first printed form metal floor 4, dielectric-slab 5, coplanar wave guide feedback port 6 and the second printed form metal floor 7; The first printed form metal floor 4, the second printed form metal floor 7 are the bottom that yi word pattern is arranged on dielectric-slab 5 one side surfaces; Director 2, active dipole 1, reflector 3 are installed on the side surface of dielectric-slab 5 from left to right successively; The left arm of active dipole 1 bottom and right arm are all between the first printed form metal floor 4 and the second printed form metal floor 7; And the left arm of active dipole 1 bottom contacts with the lower limb of dielectric-slab 5 one side surfaces; The right arm of active dipole 1 bottom and the second printed form metal floor 7 link into an integrated entity; The bottom of director 2 and the first printed form metal floor 4 link into an integrated entity; The bottom of reflector 3 and the second printed form metal floor 7 link into an integrated entity, and coplanar wave guide feedback port 6 is arranged between the first printed form metal floor 4 and the second printed form metal floor 7, and coplanar wave guide feedback port 6 is positioned at the bottom of dielectric-slab 5 one side surfaces.
This execution mode intermediary scutum 5 is that thickness is that 1.5mm, relative dielectric constant are ε
r=4.4 FR4 epoxy substrate; The described antenna of this execution mode is the circuit structure that is printed on one side, and in production in enormous quantities, can practice thrift cost 40%-50%, can produce remarkable economic efficiency; The length that director 2 is positioned at the first printed form metal floor, 4 tops is the 75%-80% that active dipole 1 is positioned at the length of the second printed form metal floor, 7 tops; The length that reflector 3 is positioned at the first printed form metal floor, 4 tops is length 1.1-1.2 times that active dipole 1 is positioned at the second printed form metal floor, 7 tops; This execution mode adopts the coplanar wave guide feedback mode, can use simultaneously the coaxial fitting feed or with integrated circuit in the coplanar waveguide feeder line feed that directly links to each other.
Embodiment two: combine Fig. 1 that this execution mode is described, the long L of the dielectric-slab 5 of the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of this execution mode is 170mm-175mm, and the wide W of dielectric-slab 5 is 85mm-90mm.Other composition and annexation are identical with embodiment one.
Embodiment three: combine Fig. 1 that this execution mode is described; The long L1 of the first printed form metal floor 4 of the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of this execution mode is 100mm-105mm; The wide W1 of the first printed form metal floor 4 is 30mm-35mm; The long L2 of the second printed form metal floor 7 is 60mm-65mm, and the wide W2 of the second printed form metal floor 7 is identical with the wide W1 of the first printed form metal floor 4.Other composition and annexation are identical with embodiment one.
Embodiment four: combine Fig. 1 that this execution mode is described; Distance W 3 between the left arm of the active dipole 1 of the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of this execution mode and the first printed form metal floor 4 is 0.2mm-0.4mm; Director 2 is 35mm-40mm with the distance W 4 of dielectric-slab 5 left side edge, and reflector 3 is 15mm-20mm with the distance W 5 of dielectric-slab 5 right side edge.Other composition and annexation are identical with embodiment one.
Embodiment five: combine Fig. 1 that this execution mode is described; The active dipole 1 of the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of this execution mode, director 2 and reflector 3 all are to be that the bar material of 2mm-2.5mm is made by width; Director 2 carries out fractal bending to the left; And the fractal bending angle of director 2 is 60 °, and reflector 3 carries out fractal bending to the right, and reflector 3 fractal bending angles are 60 °; Active dipole 1 both sides to the left and right carries out fractal bending respectively, and two fractal bending angles of active dipole 1 are 60 °.Other composition and annexation are identical with embodiment one, two, three or four.
Embodiment
Utilize embodiment one said antenna to test at present; The concrete size of antenna is according to embodiment two, three, four and five; Can find out that from the test result of Fig. 2 antenna is lower than-10dB at the frequency band range internal reflection coefficient of 887MHz-912MHz, relative bandwidth has reached 2.8%; The gain of antenna is higher under this frequency band, and this frequency band belongs to UHF wave band working band.
Utilize embodiment one said antenna to test at present; The concrete size of antenna is according to embodiment two, three, four and five; Can find out from the test result of Fig. 3 to Fig. 4; Antenna has directional characteristic preferably at uhf band typical frequencies 900MHz place; Table with test results line tomorrow has reached 4.5dB at 900MHz, in conjunction with antenna size and above-mentioned Fig. 2-Fig. 4 test result, has explained that the present invention has obtained good binding on indexs such as antenna size, bandwidth, wave beam covering and gain.
Claims (5)
1. the fractal Yagi spark gap printed antenna of a coplanar wave guide feedback; It is characterized in that: the fractal Yagi spark gap printed antenna of said a kind of coplanar wave guide feedback comprises active dipole (1), director (2), reflector (3), the first printed form metal floor (4), dielectric-slab (5), coplanar wave guide feedback port (6) and the second printed form metal floor (7); The first printed form metal floor (4), the second printed form metal floor (7) are the bottom that yi word pattern is arranged on dielectric-slab (5) one side surfaces; Director (2), active dipole (1), reflector (3) are installed on the side surface of dielectric-slab (5) from left to right successively; The left arm of active dipole (1) bottom and right arm all are positioned between the first printed form metal floor (4) and the second printed form metal floor (7); And the left arm of active dipole (1) bottom contacts with the lower limb of dielectric-slab (5) one side surfaces; The right arm of active dipole (1) bottom and the second printed form metal floor (7) link into an integrated entity; The bottom of director (2) and the first printed form metal floor (4) link into an integrated entity; The bottom of reflector (3) and the second printed form metal floor (7) link into an integrated entity; Coplanar wave guide feedback port (6) is arranged between the first printed form metal floor (4) and the second printed form metal floor (7), and coplanar wave guide feedback port (6) is positioned at the bottom of dielectric-slab (5) one side surfaces.
2. according to the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of claim 1, it is characterized in that: the length (L) of dielectric-slab (5) is 170mm-175mm, and wide (W) of dielectric-slab (5) is 85mm-90mm.
3. according to the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of claim 1; It is characterized in that: the length (L1) of the first printed form metal floor (4) is 100mm-105mm; Wide (W1) of the first printed form metal floor (4) is 30mm-35mm; The length (L2) of the second printed form metal floor (7) is 60mm-65mm, and wide (W2) of the second printed form metal floor (7) is identical with wide (W1) of the first printed form metal floor (4).
4. according to the fractal Yagi spark gap printed antenna of the said a kind of coplanar wave guide feedback of claim 1; It is characterized in that: the distance (W3) between the left arm of active dipole (1) and the first printed form metal floor (4) is 0.2mm-0.4mm; Director (2) is 35mm-40mm with the distance (W4) of dielectric-slab (5) left side edge, and reflector (3) is 15mm-20mm with the distance (W5) of dielectric-slab (5) right side edge.
5. according to the fractal Yagi spark gap printed antenna of claim 1,2,3 or 4 said a kind of coplanar wave guide feedbacks; It is characterized in that: active dipole (1), director (2) and reflector (3) all are to be the bullion material of 2mm by width; Director (2) carries out fractal bending to the left; And the fractal bending angle of director (2) is 60 °, and reflector (3) carries out fractal bending to the right, and the fractal bending angle of reflector (3) is 60 °; Active dipole (1) both sides to the left and right carries out fractal bending respectively, and two fractal bending angles of active dipole (1) are 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102571234A CN102751590A (en) | 2012-07-24 | 2012-07-24 | Fractal yagi printed antenna of coplanar waveguide feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102571234A CN102751590A (en) | 2012-07-24 | 2012-07-24 | Fractal yagi printed antenna of coplanar waveguide feed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102751590A true CN102751590A (en) | 2012-10-24 |
Family
ID=47031582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102571234A Pending CN102751590A (en) | 2012-07-24 | 2012-07-24 | Fractal yagi printed antenna of coplanar waveguide feed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102751590A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346392A (en) * | 2013-06-08 | 2013-10-09 | 哈尔滨工程大学 | Mobile phone antenna with reconfigurable directional diagram |
| CN103531889A (en) * | 2013-09-30 | 2014-01-22 | 西安电子科技大学 | Small-sized broadband end-on-fire antenna |
| CN109216895A (en) * | 2018-09-29 | 2019-01-15 | 维沃移动通信有限公司 | A kind of antenna structure |
| CN110829011A (en) * | 2019-11-18 | 2020-02-21 | 厦门大学嘉庚学院 | Fractal element Bluetooth and ultra-wideband positioning beacon antenna system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010073723A (en) * | 2000-01-19 | 2001-08-01 | 우종명 | Planar monopole type yagi-uda antenna |
| KR20040045242A (en) * | 2002-11-25 | 2004-06-01 | 재단법인 충남대학교 산학연교육연구재단 | Printed Active Yagi-Uda Antenna |
| CN102255139A (en) * | 2011-04-11 | 2011-11-23 | 哈尔滨工业大学 | Printed Yagi-Uda antenna with skirt type dipole active oscillator |
-
2012
- 2012-07-24 CN CN2012102571234A patent/CN102751590A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010073723A (en) * | 2000-01-19 | 2001-08-01 | 우종명 | Planar monopole type yagi-uda antenna |
| KR20040045242A (en) * | 2002-11-25 | 2004-06-01 | 재단법인 충남대학교 산학연교육연구재단 | Printed Active Yagi-Uda Antenna |
| CN102255139A (en) * | 2011-04-11 | 2011-11-23 | 哈尔滨工业大学 | Printed Yagi-Uda antenna with skirt type dipole active oscillator |
Non-Patent Citations (1)
| Title |
|---|
| 顾硕，林澍，邱景辉: "分形八木天线的实验研究", 《哈尔滨理工大学学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346392A (en) * | 2013-06-08 | 2013-10-09 | 哈尔滨工程大学 | Mobile phone antenna with reconfigurable directional diagram |
| CN103531889A (en) * | 2013-09-30 | 2014-01-22 | 西安电子科技大学 | Small-sized broadband end-on-fire antenna |
| CN103531889B (en) * | 2013-09-30 | 2015-07-15 | 西安电子科技大学 | Small-sized broadband end-on-fire antenna |
| CN109216895A (en) * | 2018-09-29 | 2019-01-15 | 维沃移动通信有限公司 | A kind of antenna structure |
| CN110829011A (en) * | 2019-11-18 | 2020-02-21 | 厦门大学嘉庚学院 | Fractal element Bluetooth and ultra-wideband positioning beacon antenna system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103367897B (en) | Small-sized highly-insulated broadband dual-polarization printed dipole antenna | |
| CN104900998A (en) | Low-profile dual-polarized base station antenna | |
| CN106299727B (en) | Low mutual coupling 4-unit ultra-wideband MIMO antenna | |
| CN108199137B (en) | Planar tight coupling bipolar ultra-wideband phased array antenna | |
| CN1881685A (en) | Cross feed broadband printed Yagi antenna | |
| CN106654545B (en) | Base station antenna loaded with left-handed material | |
| WO2021139015A1 (en) | 5g millimeter wave dual-polarized antenna module and handheld device | |
| CN110380233A (en) | A kind of low section Scanning Phased Array Antenna with Broadband | |
| CN110444866A (en) | A kind of ternary micro-strip dipole antenna based on PEG and yagi aerial structure | |
| CN101997160B (en) | Dual band antenna and wireless communication device using same | |
| CN102751590A (en) | Fractal yagi printed antenna of coplanar waveguide feed | |
| CN109509965B (en) | 5G broadband MIMO antenna system based on coupled loop antenna and mobile terminal | |
| CN104953295A (en) | Small-size directional slot antenna | |
| CN109167163B (en) | Ultra-wideband dual-polarized oscillator antenna | |
| CN2789948Y (en) | Substrate integrated wave guide double-frequency wideband slot array antenna unit | |
| CN102760944B (en) | Omnidirectional radiation vibrator array antenna for loaded coupled feeding | |
| CN102255139A (en) | Printed Yagi-Uda antenna with skirt type dipole active oscillator | |
| CN110364818B (en) | Broadband miniaturization dual-polarized antenna | |
| CN101707284B (en) | LTCC electrically small integrated antenna for radio-frequency front-end system | |
| CN205159500U (en) | Antenna | |
| CN102760946B (en) | Omnidirectional radiation oscillator array antenna for coupling feed | |
| CN102005646A (en) | Miniaturized broad-band antenna applied to WLAN (Wireless Local Area Network) | |
| CN104810614A (en) | Device for enhancing phased array wide angle scanning gain | |
| CN204741076U (en) | Miniaturized directional slot antenna | |
| CN1744380A (en) | Antenna for mobile communication base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121024 |