CN102683895A - UHF (ultrahigh frequency) frequency range reflection cavity dipole antenna - Google Patents
UHF (ultrahigh frequency) frequency range reflection cavity dipole antenna Download PDFInfo
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- CN102683895A CN102683895A CN2012101649570A CN201210164957A CN102683895A CN 102683895 A CN102683895 A CN 102683895A CN 2012101649570 A CN2012101649570 A CN 2012101649570A CN 201210164957 A CN201210164957 A CN 201210164957A CN 102683895 A CN102683895 A CN 102683895A
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- reflection cavity
- dipole
- oscillator
- supporting leg
- oscillator supporting
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Abstract
The invention discloses a UHF (ultrahigh frequency) frequency range reflection cavity dipole antenna which comprises a reflection cavity and an oscillator assembly arranged at the inner center of the reflection cavity. The oscillator assembly comprises a pair of dipole oscillators supported by corresponding oscillator supporting legs respectively, the dipole oscillators are pentagonal, and one of the dipole oscillators of the oscillator assembly is connected with an F head outside the reflection cavity through a copper wire to form coaxial feed. Axial wide wave beams are formed by means of radiation characteristics of the half-wave dipoles and the reflection action of the reflection cavity, broad band can be formed by means of multilateral shaping of the dipoles, the coverage frequency of the antenna can reach 450-850MHz, three frequency bands of the UHF frequency range of domestic ground wave broadcast televisions are covered, and the antenna is applicable to receiving of domestic ground wave broadcast televisions. Moreover, the UHF frequency range reflection cavity dipole antenna is small in axial size, compact in integral structure, high in wind resistance, convenient to use and rapid in mounting and adjustment.
Description
Technical field
The present invention relates to antenna technical field, particularly a kind of reflection cavity dipole antenna that is used for uhf band that is applicable to the terrestrial broadcasting television reception.
Background technology
Commercially available terrestrial broadcasting television receiving antenna mainly is a Yagi antenna at present, folded dipole antenna, and long Yagi antenna, domestic terrestrial broadcasting TV uhf band is 474-562MHz, 610-722MHz, 730-794MHz.Mainly there is following problem in television receiving antenna now:
1, existing UHF all channel antenna covers frequency band 470-770MHz, can't contain three frequency ranges covering domestic terrestrial broadcasting TV uhf band.
2, the commercially available narrow limitation of Yagi antenna frequency band makes at present commercially available terrestrial broadcasting television receiving antenna be difficult to really realize that entirely ground roll radio and television receive frequency covers at present, and in the high-frequency section, the aerial radiation direction is prone to radiation backward.
3, axial dimension is bigger on the present commercially available Yagi antenna structure, and it is little to set up the back wind loading rating, poor stability, and useful life is short.
4, commercially available Yagi antenna has multiple unit number different at present, the frequency band Different products, and model is various.
5, at present commercially available Yagi antenna need be used impedance inverter circuit or the output impedance coupling is realized in the impedance conversion unit.
Summary of the invention
Goal of the invention of the present invention is: the problem to above-mentioned existence provides a kind of reflection cavity dipole antenna that can cover domestic terrestrial broadcasting TV uhf band fully.
Technical scheme of the present invention is achieved in that a kind of uhf band reflection cavity dipole antenna; It is characterized in that: the oscillator integral body that comprises reflection cavity and be arranged at center in the said reflection cavity; Said oscillator integral body comprises a pair of dipole element that supports through corresponding oscillator supporting leg respectively; Said dipole element is pentagon, and one of them whole dipole element of said oscillator is connected to form coaxial feed through copper cash and the outside F head of reflection cavity.
Uhf band reflection cavity dipole antenna of the present invention, its said two dipole elements connect with two corresponding oscillator supporting leg one ends respectively, and the other end of said two the oscillator supporting legs bearing interior with being arranged on reflection cavity is connected.
Uhf band reflection cavity dipole antenna of the present invention; They are in said two oscillator supporting legs; One of them is a hollow structure; Said bearing is provided with the through hole that is communicated with the oscillator supporting leg of hollow structure, and said copper cash one end is connected with the F head, and its other end passes the dipole element that the oscillator supporting leg of oscillator supporting leg and the hollow structure of through hole on the bearing, hollow structure supports successively and is connected with the dipole element of another oscillator supporting leg support.
Uhf band reflection cavity dipole antenna of the present invention, its said another oscillator supporting leg is a solid construction.
Uhf band reflection cavity dipole antenna of the present invention, its oscillator supporting leg section at said copper cash periphery, the through hole that passes bearing and hollow structure is provided with the medium section.
Uhf band reflection cavity dipole antenna of the present invention, its said two oscillator supporting legs are cylindrical.
Uhf band reflection cavity dipole antenna of the present invention; Its said two dipole element symmetric arrangement; The end points of one of them dipole element is A, B, C, D, E, and the tie point of itself and an oscillator supporting leg is O, and the end points of another dipole element is A ', B ', C ', D ', E '; The tie point of itself and another oscillator supporting leg is O ', W1=BC=0.08 λ
0, W2=A ' D '=0.31 λ
0, L1=O O '=0.04 λ
0, L2=A A '=0.12 λ
0, L3=C C '=0.36 λ
0, space D=0.01 λ between two dipole elements
0, the dipole element lower limb is to distance H=0.25 λ of bearing top edge
0, λ wherein
0For the low-limit frequency of this antenna institute covering frequence to the design frequency wavelength between the centre frequency.
Owing to adopted technique scheme, the invention has the beneficial effects as follows:
The reflection cavity dipole antenna covering frequence of the uhf band that 1, the present invention relates to is 450-850MHz, contains to have covered three frequency ranges of domestic terrestrial broadcasting TV uhf band.
The reflection cavity dipole antenna of the uhf band that 2, the present invention relates to adopts cavity body structure, compact overall structure, the axis size is little, sets up the back wind loading rating and strengthens, stability better, and is anticorrosive, prolong useful life, easy to use, that adjustment is installed is quick.
The reflection cavity dipole antenna of the uhf band that 3, the present invention relates to can be used for three frequency ranges of domestic terrestrial broadcasting TV uhf band, and is simple in structure, is convenient to production, the management of product and sale.
Medium section in the reflection cavity dipole antenna of the uhf band that 4, the present invention relates to realizes the impedance saltus step, realizes the output impedance coupling, does not need impedance inverter circuit or impedance conversion element antenna standing-wave ratio between 1.8-2.4, is up to state standards.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the side cutaway view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Mark among the figure: 1 is dipole element, and 2 is left oscillator supporting leg, and 3 is right oscillator supporting leg, and 4 is copper cash, and 5 is bearing, and 6 is reflection cavity, and 7 is the F head, and 8 is the medium section.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done detailed explanation.
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As illustrated in fig. 1 and 2; A kind of uhf band reflection cavity dipole antenna; The oscillator integral body that comprises reflection cavity 6 and be arranged at center in the said reflection cavity 6, said oscillator integral body comprises the dipole element 1 of a pair of symmetric arrangement, said dipole element is pentagon; Said two dipole elements 1 are connected with right oscillator supporting leg 3 one ends with corresponding left oscillator supporting leg 2 respectively; The other end of said left oscillator supporting leg 2 and right oscillator supporting leg 3 is connected with bearings 5 in being arranged on reflection cavity 6, and design oscillator supporting leg length adjustment standing wave, whole one of them dipole element 1 of the said oscillator F through copper cash 4 and reflection cavity 6 outsides 7 is connected to form coaxial feed.
Wherein, Said left oscillator supporting leg 2 is a hollow structure; Said bearing 5 is provided with the through hole that is communicated with the left oscillator supporting leg 2 of hollow structure; Said copper cash 4 one ends and 75 ohm of F 7 are connected; Its other end passes the through hole on the bearing 5 successively, left oscillator supporting leg 2 and the dipole element 1 that left oscillator supporting leg 2 supports and the dipole element 1 that right oscillator supporting leg 3 supports of hollow structure is connected to form coaxial feed, and said right oscillator supporting leg 3 is a solid construction, and said two oscillator supporting legs are cylindrical.
Left oscillator supporting leg at said copper cash 4 peripheries, the through hole that passes bearing 5 and hollow structure is provided with medium section 8 for 2 sections; Be through hole and the left oscillator supporting leg that copper cash and medium section have run through bearing, and copper cash has run through the medium section, its medium section forms the impedance saltus step; Make coaxial line and output impedance matching; Improve impedance relationship, do not need impedance inverter circuit or impedance conversion element antenna standing-wave ratio between 1.8-2.4, be up to state standards.
The present invention utilizes the radiation characteristic of half-wave dipole and the reflex of reflection chamber to form axial broad beam; Polygon figuration through electrode couple forms broad frequency band; Shown in Fig. 2 and 3, the pentagon dipole element of said two symmetric arrangement, the end points of one of them dipole element are A, B, C, D, E; The tie point of itself and left oscillator supporting leg is O; The end points of another dipole element is A ', B ', C ', D ', E ', and the tie point of itself and right oscillator supporting leg is O ', W1=BC=0.08 λ
0, W2=A ' D '=0.31 λ
0, L1=O O '=0.04 λ
0, L2=A A '=0.12 λ
0, L3=C C '=0.36 λ
0, space D=0.01 λ between two dipole elements
0, the dipole element lower limb is to distance H=0.25 λ of bearing top edge
0, λ wherein
0For the low-limit frequency of this antenna institute covering frequence to the design frequency wavelength between the centre frequency, this antenna covering frequence is 450-850MHz, contains to have covered three frequency ranges of domestic terrestrial broadcasting TV uhf band.
Claims (7)
1. uhf band reflection cavity dipole antenna; It is characterized in that: the oscillator integral body that comprises reflection cavity (6) and be arranged at the interior center of said reflection cavity (6); Said oscillator integral body comprises a pair of dipole element (1) that supports through corresponding oscillator supporting leg respectively; Said dipole element (1) is pentagon, and whole one of them dipole element (1) of said oscillator is connected to form coaxial feed through copper cash (4) and the outside F head (7) of reflection cavity (6).
2. uhf band reflection cavity dipole antenna according to claim 1; It is characterized in that: said two dipole elements (1) connect with two corresponding oscillator supporting leg one ends respectively, and the other end of said two the oscillator supporting legs bearing (5) interior with being arranged on reflection cavity (6) is connected.
3. uhf band reflection cavity dipole antenna according to claim 2; It is characterized in that: in said two oscillator supporting legs; One of them is a hollow structure; Said bearing (5) is provided with the through hole that is communicated with the oscillator supporting leg of hollow structure; Said copper cash (4) one ends are connected with F head (7), and its other end passes the dipole element (1) that the oscillator supporting leg of oscillator supporting leg and the hollow structure of through hole on the bearing (5), hollow structure supports successively and is connected with the dipole element (1) of another oscillator supporting leg support.
4. uhf band reflection cavity dipole antenna according to claim 3 is characterized in that: said another oscillator supporting leg is a solid construction.
5. uhf band reflection cavity dipole antenna according to claim 3 is characterized in that: the oscillator supporting leg section at said copper cash (4) periphery, the through hole that passes bearing (5) and hollow structure is provided with medium section (8).
6. uhf band reflection cavity dipole antenna according to claim 5 is characterized in that: said two oscillator supporting legs are cylindrical.
7. according to any described uhf band reflection cavity dipole antenna in the claim 1 to 6; It is characterized in that: said two dipole elements (1) symmetric arrangement; The end points of one of them dipole element (1) is A, B, C, D, E, and the tie point of itself and an oscillator supporting leg is O, and the end points of another dipole element (1) is A ', B ', C ', D ', E '; The tie point of itself and another oscillator supporting leg is O ', W1=BC=0.08 λ
0, W2=A ' D '=0.31 λ
0, L1=O O '=0.04 λ
0, L2=A A '=0.12 λ
0, L3=C C '=0.36 λ
0, the space D between two dipole elements (1)=0.01 λ
0, dipole element (1) lower limb is to distance H=0.25 λ of bearing (5) top edge
0, λ wherein
0For the low-limit frequency of this antenna institute covering frequence to the design frequency wavelength between the centre frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101649570A CN102683895A (en) | 2012-05-25 | 2012-05-25 | UHF (ultrahigh frequency) frequency range reflection cavity dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101649570A CN102683895A (en) | 2012-05-25 | 2012-05-25 | UHF (ultrahigh frequency) frequency range reflection cavity dipole antenna |
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| CN102683895A true CN102683895A (en) | 2012-09-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2755279A1 (en) * | 2013-01-11 | 2014-07-16 | Roke Manor Research Limited | A dipole antenna |
| CN103972638A (en) * | 2013-01-31 | 2014-08-06 | 佳邦科技股份有限公司 | Dipole antenna structure and antenna device |
| CN106450781A (en) * | 2016-10-31 | 2017-02-22 | 深圳市普方众智精工科技有限公司 | Broadband slot antenna |
| CN106549223A (en) * | 2016-09-26 | 2017-03-29 | 中国电子科技集团公司第二十九研究所 | A kind of efficient low section cavity-backed radiator antenna of broad band low frequency |
| CN110050385A (en) * | 2018-06-12 | 2019-07-23 | 东莞理工学院 | A kind of bifilar helical antenna for realizing that OAM mode is restructural |
| CN110199431A (en) * | 2017-01-25 | 2019-09-03 | 诺比特 Its 公司 | Broad-band antenna balun |
| CN111082219A (en) * | 2019-12-17 | 2020-04-28 | 西安电子科技大学 | Yagi antenna with reconfigurable broadband directional diagram |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity antenna |
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| US4183027A (en) * | 1977-10-07 | 1980-01-08 | Ehrenspeck Hermann W | Dual frequency band directional antenna system |
| CN101034765A (en) * | 2006-03-10 | 2007-09-12 | 香港城市大学 | Complementary wideband antenna |
| CN101436715A (en) * | 2008-12-05 | 2009-05-20 | 邢红兵 | Dual polarization back cavity type radiating antenna |
| CN101877434A (en) * | 2009-04-28 | 2010-11-03 | 华为技术有限公司 | Dipole antenna unit and manufacturing method thereof |
| CN202050057U (en) * | 2011-03-23 | 2011-11-23 | 四川省视频电子有限责任公司 | Novel S-frequency band reflection cavity feed source antenna |
| CN202633514U (en) * | 2012-05-25 | 2012-12-26 | 四川省视频电子有限责任公司 | UHF (Ultra High Frequency) band reflection cavity dipole antenna |
-
2012
- 2012-05-25 CN CN2012101649570A patent/CN102683895A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183027A (en) * | 1977-10-07 | 1980-01-08 | Ehrenspeck Hermann W | Dual frequency band directional antenna system |
| CN101034765A (en) * | 2006-03-10 | 2007-09-12 | 香港城市大学 | Complementary wideband antenna |
| CN101436715A (en) * | 2008-12-05 | 2009-05-20 | 邢红兵 | Dual polarization back cavity type radiating antenna |
| CN101877434A (en) * | 2009-04-28 | 2010-11-03 | 华为技术有限公司 | Dipole antenna unit and manufacturing method thereof |
| CN202050057U (en) * | 2011-03-23 | 2011-11-23 | 四川省视频电子有限责任公司 | Novel S-frequency band reflection cavity feed source antenna |
| CN202633514U (en) * | 2012-05-25 | 2012-12-26 | 四川省视频电子有限责任公司 | UHF (Ultra High Frequency) band reflection cavity dipole antenna |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2755279A1 (en) * | 2013-01-11 | 2014-07-16 | Roke Manor Research Limited | A dipole antenna |
| CN103972638A (en) * | 2013-01-31 | 2014-08-06 | 佳邦科技股份有限公司 | Dipole antenna structure and antenna device |
| CN106549223A (en) * | 2016-09-26 | 2017-03-29 | 中国电子科技集团公司第二十九研究所 | A kind of efficient low section cavity-backed radiator antenna of broad band low frequency |
| CN106549223B (en) * | 2016-09-26 | 2019-09-06 | 中国电子科技集团公司第二十九研究所 | A kind of efficient low section cavity-backed radiator antenna of broad band low frequency |
| CN106450781A (en) * | 2016-10-31 | 2017-02-22 | 深圳市普方众智精工科技有限公司 | Broadband slot antenna |
| CN106450781B (en) * | 2016-10-31 | 2018-11-27 | 深圳市普方众智精工科技有限公司 | Broadband slot antenna |
| CN110199431A (en) * | 2017-01-25 | 2019-09-03 | 诺比特 Its 公司 | Broad-band antenna balun |
| CN110199431B (en) * | 2017-01-25 | 2022-08-19 | 诺比特 Its 公司 | Broadband antenna balun |
| CN110050385A (en) * | 2018-06-12 | 2019-07-23 | 东莞理工学院 | A kind of bifilar helical antenna for realizing that OAM mode is restructural |
| CN111082219A (en) * | 2019-12-17 | 2020-04-28 | 西安电子科技大学 | Yagi antenna with reconfigurable broadband directional diagram |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity antenna |
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Application publication date: 20120919 |