CN105186113A - Waveguide slot antenna - Google Patents
Waveguide slot antenna Download PDFInfo
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- CN105186113A CN105186113A CN201510679084.0A CN201510679084A CN105186113A CN 105186113 A CN105186113 A CN 105186113A CN 201510679084 A CN201510679084 A CN 201510679084A CN 105186113 A CN105186113 A CN 105186113A
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- slot antenna
- waveguide slot
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Abstract
The invention discloses a waveguide slot antenna comprising a lower conduction plate, a middle conduction plate, a circuit layer and an upper conduction plate stacked in sequence; the middle and lower conduction plates are jointed so as to form an inner cavity-shape waveguide used for transmitting signals; the middle conduction plate is provided with a resonant cavity arranged corresponding to the waveguide and connected with the waveguide; the upper portion of the resonant cavity is provided with a first horn-shape cavity; the circuit layer is arranged between the middle conduction plate and the upper conduction plate, and comprises a plurality of bar-shape circuit boards distributed corresponding to the resonant cavity; the upper conduction plate is provided with a second horn-shape cavity matched with the first horn-shape cavity, and the second horn-shape cavity penetrates the upper conduction plate in the thickness direction. The waveguide slot antenna can improve reception efficiency of circular polarization signals, thus realizing efficient high gain reception of the circular polarization signals.
Description
Technical field
The present invention relates to antenna technical field, particularly relate to a kind of Waveguide slot antenna.
Background technology
Compared to parabolic antenna, Small-slotted Planar Antenna Array has compact conformation, easily and the advantage such as installation material is conformal, lightweight, is therefore widely used in the communication apparatus such as airborne radar, shipborne radar, in-car TV satellite antenna.Waveguide slot antenna is the one of Small-slotted Planar Antenna Array, and Waveguide slot antenna is feeder line form with waveguide, and on gap, the energy of radiation carrys out the electromagnetic wave of transmission in self-waveguide, therefore effectively can reduce feeder loss.The outstanding advantages such as Waveguide slot antenna has that low-loss, power capacity are large, high radiation efficiency and stable performance, have and apply more widely.
The signal of satellite launch and reception is according to the difference of polarization mode, be divided into linear polarization signal and circularly polarized signal, satellite antenna receives or launches circularly polarized signal and can not cause cross polar component, can avoid causing polarization mismatch, therefore in current Satellite Communication System, more employing circularly polarized signal.
But the receiving efficiency of existing Waveguide slot antenna to circularly polarized signal is lower, therefore how to be optimized design to Waveguide slot antenna, improving its receiving efficiency to circularly polarized signal, is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
Given this, the invention provides a kind of Waveguide slot antenna, the receiving efficiency to circularly polarized signal can be improved.
For achieving the above object, the invention provides following technical scheme:
A kind of Waveguide slot antenna, comprising: the Lower Layer Conductive Panel stacked successively, middle level conductive plate, circuit layer and Upper Layer Conductive Panel;
Described middle level conductive plate engages with described Lower Layer Conductive Panel, the cavity-like waveguide being used for signal transmission is formed in inside, described middle level conductive plate have corresponding with described waveguide distribute and the resonant cavity communicated with described waveguide, be provided with the first flared cavity on described resonant cavity top;
Described circuit layer is between described middle level conductive plate and described Upper Layer Conductive Panel, and described circuit layer comprises the multiple strip circuit plates that distribute corresponding to described resonant cavity;
Described Upper Layer Conductive Panel has second flared cavity that distribute corresponding to described first flared cavity, and described second flared cavity runs through at the thickness direction of described Upper Layer Conductive Panel.
Alternatively, described second flared cavity comprises two-stage or two-stage with upper plenum.
Alternatively, the shape of described first flared cavity and described second flared cavity is circular or regular polygon.
Alternatively, the shape of described resonant cavity is circular.
Alternatively, the diameter of described resonant cavity equals the length of the cross section of described waveguide.
Alternatively, described strip circuit plate correspondence is positioned at directly over described waveguide.
Alternatively, described middle level conductive plate has the waveguide cavity run through at the thickness direction of described middle level conductive plate, has at the lower surface of described middle level conductive plate the conduit described waveguide cavity be communicated with;
The upper surface of described Lower Layer Conductive Panel has the waveguide slot corresponding with the described waveguide cavity of described middle level conductive plate, and described waveguide cavity and described waveguide slot form described waveguide, are provided with step in the end of described waveguide slot;
At the upper surface of described Lower Layer Conductive Panel, also there is the conduit be communicated with by described waveguide slot.
Alternatively, described waveguide is arranged in array, and described resonant cavity correspondence is arranged in array.
Alternatively, the length of the cross section of described waveguide is greater than 1/2nd of transmitted signal wavelengths, and width is less than 1/4th of transmitted signal wavelengths.
From above technical scheme, a kind of Waveguide slot antenna provided by the present invention, comprise the Lower Layer Conductive Panel stacked successively, middle level conductive plate, circuit layer and Upper Layer Conductive Panel, described middle level conductive plate engages with described Lower Layer Conductive Panel, the cavity-like waveguide being used for signal transmission is formed in inside, described middle level conductive plate has distribute and the resonant cavity that communicate corresponding with waveguide, the first flared cavity is provided with on the top of resonant cavity, described Upper Layer Conductive Panel has second flared cavity that distribute corresponding to the first flared cavity of middle level conductive plate, circuit layer between middle level conductive plate and Upper Layer Conductive Panel comprises the strip circuit plate that distribute corresponding to resonant cavity.The resonant cavity of the flared cavity of Upper Layer Conductive Panel, the strip circuit plate of circuit layer, middle level conductive plate is all corresponding with waveguide to distribute, and realizes the reception to satellite-signal and transmission.When receiving satellite signal, strip circuit plate is used for circularly polarized signal to be converted to linear polarization signal, the receiving efficiency of antenna to circularly polarized signal can be improved, the resonant cavity correspondence of Upper Layer Conductive Panel is positioned at the below of strip circuit plate, contribute to when strip circuit plate switching signal improving impedance matching, axial ratio and bandwidth, and the second flared cavity of the first flared cavity and Upper Layer Conductive Panel that are positioned at middle level conductive plate can expand the receiving plane of antenna to satellite-signal, contribute to the reception to circularly polarized signal.Therefore, described Waveguide slot antenna improves the receiving efficiency to circularly polarized signal.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The decomposing schematic representation of a kind of Waveguide slot antenna that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the Upper Layer Conductive Panel of the embodiment of the present invention and the schematic diagram of circuit layer combination;
Fig. 3 is the front schematic view of the middle level conductive plate of the embodiment of the present invention;
Fig. 4 is the schematic rear view of the middle level conductive plate in Fig. 3;
Fig. 5 is the front schematic view of the Lower Layer Conductive Panel of the embodiment of the present invention.
Embodiment
Technical scheme in the present invention is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Please refer to Fig. 1, Fig. 2 and Fig. 3, a kind of Waveguide slot antenna that the embodiment of the present invention provides, comprising: the Lower Layer Conductive Panel 100 stacked successively, middle level conductive plate 200, circuit layer 300 and Upper Layer Conductive Panel 400;
Described middle level conductive plate 200 engages with described Lower Layer Conductive Panel 100, the cavity-like waveguide being used for signal transmission is formed in inside, described middle level conductive plate 200 have corresponding with described waveguide distribute and the resonant cavity 201 communicated with described waveguide, be provided with the first flared cavity 202 on described resonant cavity 201 top;
Described circuit layer 300 is between described middle level conductive plate 200 and described Upper Layer Conductive Panel 400, and described circuit layer 300 comprises the multiple strip circuit plates 301 that distribute corresponding to described resonant cavity 201;
Described Upper Layer Conductive Panel 400 has second flared cavity 401 that distribute corresponding to described first flared cavity 202, and described second flared cavity 401 runs through at the thickness direction of described Upper Layer Conductive Panel 400.
From above content, Waveguide slot antenna described in the present embodiment, comprise the Lower Layer Conductive Panel stacked successively, middle level conductive plate, circuit layer and Upper Layer Conductive Panel, described middle level conductive plate engages with described Lower Layer Conductive Panel, the cavity-like waveguide being used for signal transmission is formed in inside, described middle level conductive plate has distribute and the resonant cavity that communicate corresponding with waveguide, the first flared cavity is provided with on the top of resonant cavity, described Upper Layer Conductive Panel has second flared cavity that distribute corresponding to the first flared cavity of middle level conductive plate, circuit layer between middle level conductive plate and Upper Layer Conductive Panel comprises the strip circuit plate that distribute corresponding to resonant cavity.The resonant cavity of the flared cavity of Upper Layer Conductive Panel, the strip circuit plate of circuit layer, middle level conductive plate is all corresponding with waveguide to distribute, and realizes the reception to satellite-signal and transmission.When receiving satellite signal, strip circuit plate is used for circularly polarized signal to be converted to linear polarization signal, the receiving efficiency of antenna to circularly polarized signal can be improved, the resonant cavity correspondence of Upper Layer Conductive Panel is positioned at the below of strip circuit plate, contribute to when strip circuit plate switching signal improving impedance matching, axial ratio and bandwidth, and the second flared cavity of the first flared cavity and Upper Layer Conductive Panel that are positioned at middle level conductive plate can expand the receiving plane of antenna to satellite-signal, contribute to the reception to circularly polarized signal.Therefore, described Waveguide slot antenna can improve the receiving efficiency to circularly polarized signal.
Please refer to Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, described middle level conductive plate 200 has the waveguide cavity 203 run through at the thickness direction of middle level conductive plate 200, there is at the lower surface of middle level conductive plate 200 conduit 204 described waveguide cavity 203 be communicated with, at the upper surface of Lower Layer Conductive Panel 100, there is the waveguide slot 101 corresponding with the described waveguide cavity 203 of described middle level conductive plate, also there is the conduit 102 be communicated with by described waveguide slot 101.After Lower Layer Conductive Panel 100 and middle level conductive plate 200 stack joint successively, engage corresponding with the waveguide slot 101 of Lower Layer Conductive Panel of the waveguide cavity 203 of middle level conductive plate forms waveguide, the conduit 204 of middle level conductive plate lower surface engages with the conduit 102 of Lower Layer Conductive Panel upper surface is also corresponding, described waveguide can be communicated with, for distributing the signal of transmission.Shown in figure 5, be provided with step 103 in the end of the waveguide slot 101 of Lower Layer Conductive Panel, be conducive to transmission and the conversion of signal in waveguide.
The described waveguide that middle level conductive plate 200 and Lower Layer Conductive Panel 100 inside are formed is arranged in array, and particularly, every four described waveguides are one group and are communicated with by conduit.The length that can arrange the cross section of described waveguide is greater than 1/2nd of transmitted signal wavelengths, and width is less than 1/4th of transmitted signal wavelengths, and higher to the efficiency of transmission of satellite-signal like this, the loss of Signal transmissions is little.
The upper surface of middle level conductive plate 200 is provided with resonant cavity 201, and described resonant cavity 201 is corresponding with waveguide to distribute and communicates.Corresponding waveguide is transferred to, the impedance bandwidth of resonant cavity 201 easily extensible antenna by resonant cavity 201 Received signal strength.The shape of described resonant cavity 201 can be circular, can be also other regular polygon, and in the present embodiment, the shape of described resonant cavity 201 is circular, and the diameter of described resonant cavity 201 equals the length of the cross section of waveguide.
The top of the resonant cavity 201 of described middle level conductive plate 200 is provided with the first flared cavity 202, engages with corresponding with the flared cavity of Upper Layer Conductive Panel, form the loudspeaker being used for Received signal strength.
Circuit layer 300 is between middle level conductive plate 200 and Upper Layer Conductive Panel 400, circuit layer 300 comprises multiple strip circuit plate 301, strip circuit plate 301 is corresponding with the resonant cavity 201 of middle level conductive plate 200 to distribute, particularly, strip circuit plate 301 correspondence is positioned at directly over waveguide, strip circuit plate 301, for the circularly polarized signal of reception is converted to linear polarization signal, can improve the receiving efficiency of antenna to circularly polarized signal; And correspondence is positioned at the resonant cavity 201 below it, contributes to improving impedance matching, axial ratio and bandwidth when the reception of strip circuit plate and switching signal, realize the reception of the High-efficiency high-gain to circularly polarized signal.
When specifically arranging, by regulating bar shaped circuit board 301 and the relative angular position of waveguide, select to receive or launch left-hand circular polarization signal or right-handed circular polarization signal.The shape and size of strip circuit plate 301 specifically can be arranged according to the frequency range received or transmit.Strip circuit plate 301 is connected with matching stub 302, and matching stub 302 is connected to the long limit of strip circuit plate 301, with reference to figure 2.The matching stub being used as inductance or capacity cell, for improving axial ratio and the axial ratio bandwidth of the circularly polarized signal changed by bar shaped wiring board, is engaged to strip conductor, in order to change the impedance of antenna by matching stub 302.Therefore, matching stub is used for improving axial ratio bandwidth by the resonance frequency of antenna or spread bandwidth.
Upper Layer Conductive Panel 400 is positioned at the superiors, and Upper Layer Conductive Panel 400 has second flared cavity 401, second flared cavity 401 that distribute corresponding to the first flared cavity 202 to be run through at the thickness direction of Upper Layer Conductive Panel.Flared cavity refers to that inwall is the cavity of inclination shape, and namely integral hollow is horn-like.
The second flared cavity 401 being positioned at Upper Layer Conductive Panel 400 is corresponding with the first flared cavity 202 of middle level conductive plate 200 upper surface to be engaged, form the loudspeaker of Received signal strength, when receiving satellite signal, flared cavity is as the receiving plane of antenna receiving satellite signal, the interference to Signal reception can be reduced, expand antenna to the receiving plane of satellite-signal, contribute to the efficient reception to circularly polarized signal.
The shape of the second flared cavity 401 and the first flared cavity 202 can be square, circular or other regular polygon, is square in the present embodiment.The inclination angle of flared cavity inwall can be arranged according to specific requirement.
Alternatively, Waveguide slot antenna described in the present embodiment, the second flared cavity 401 being positioned at Upper Layer Conductive Panel 400 can be set to two-stage or two-stage with upper plenum, namely comprise multilevel cavity, the inwall inclination angle of cavity at different levels is different, forms multistage loudspeaker, this setup optimizes the structural design of flared cavity, form multistage loudspeaker at Upper Layer Conductive Panel, contribute to improving the receiving efficiency to satellite-signal, improve the receiving efficiency to circularly polarized signal.
Waveguide slot antenna described in the present embodiment, when receiving satellite signal, its strip circuit plate is used for circularly polarized signal to be converted to linear polarization signal, receive loss can be reduced, be positioned at the resonant cavity below strip circuit plate, contribute to improving impedance matching, axial ratio and bandwidth when the reception of strip circuit plate and switching signal, and the receiving plane of antenna to satellite-signal can be expanded as the flared cavity in Signal reception face, contribute to the efficient reception to circularly polarized signal, therefore described Waveguide slot antenna can realize receiving the High-efficiency high-gain of circularly polarized signal.And described Waveguide slot antenna is simple and compact for structure, easy for installation.
Above a kind of Waveguide slot antenna provided by the present invention is described in detail.Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection range of the claims in the present invention.
Claims (9)
1. a Waveguide slot antenna, is characterized in that, comprising: the Lower Layer Conductive Panel stacked successively, middle level conductive plate, circuit layer and Upper Layer Conductive Panel;
Described middle level conductive plate engages with described Lower Layer Conductive Panel, the cavity-like waveguide being used for signal transmission is formed in inside, described middle level conductive plate have corresponding with described waveguide distribute and the resonant cavity communicated with described waveguide, be provided with the first flared cavity on described resonant cavity top;
Described circuit layer is between described middle level conductive plate and described Upper Layer Conductive Panel, and described circuit layer comprises the multiple strip circuit plates that distribute corresponding to described resonant cavity;
Described Upper Layer Conductive Panel has second flared cavity that distribute corresponding to described first flared cavity, and described second flared cavity runs through at the thickness direction of described Upper Layer Conductive Panel.
2. Waveguide slot antenna as claimed in claim 1, is characterized in that, described second flared cavity comprises two-stage or two-stage with upper plenum.
3. Waveguide slot antenna as claimed in claim 1, is characterized in that, the shape of described first flared cavity and described second flared cavity is circular or regular polygon.
4. Waveguide slot antenna as claimed in claim 1, is characterized in that, the shape of described resonant cavity is circular.
5. Waveguide slot antenna as claimed in claim 4, it is characterized in that, the diameter of described resonant cavity equals the length of the cross section of described waveguide.
6. Waveguide slot antenna as claimed in claim 5, is characterized in that, described strip circuit plate correspondence is positioned at directly over described waveguide.
7. the Waveguide slot antenna as described in any one of claim 1-6, it is characterized in that, described middle level conductive plate has the waveguide cavity run through at the thickness direction of described middle level conductive plate, has at the lower surface of described middle level conductive plate the conduit described waveguide cavity be communicated with;
The upper surface of described Lower Layer Conductive Panel has the waveguide slot corresponding with the described waveguide cavity of described middle level conductive plate, and described waveguide cavity and described waveguide slot form described waveguide, are provided with step in the end of described waveguide slot;
At the upper surface of described Lower Layer Conductive Panel, also there is the conduit be communicated with by described waveguide slot.
8. Waveguide slot antenna as claimed in claim 7, it is characterized in that, described waveguide is arranged in array, and described resonant cavity correspondence is arranged in array.
9. Waveguide slot antenna as claimed in claim 1, it is characterized in that, the length of the cross section of described waveguide is greater than 1/2nd of transmitted signal wavelengths, and width is less than 1/4th of transmitted signal wavelengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679084.0A CN105186113B (en) | 2015-10-19 | 2015-10-19 | Waveguide slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679084.0A CN105186113B (en) | 2015-10-19 | 2015-10-19 | Waveguide slot antenna |
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| Publication Number | Publication Date |
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| CN105186113A true CN105186113A (en) | 2015-12-23 |
| CN105186113B CN105186113B (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510679084.0A Active CN105186113B (en) | 2015-10-19 | 2015-10-19 | Waveguide slot antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034386A (en) * | 2019-03-26 | 2019-07-19 | 北京遥测技术研究所 | Low axis can large-angle scanning Waveguide slot linear array antenna than high efficiency |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0295003A2 (en) * | 1987-06-09 | 1988-12-14 | THORN EMI plc | Antenna |
| KR100686606B1 (en) * | 2005-11-02 | 2007-02-26 | 위월드 주식회사 | Waveguide slot array antenna for receiving circularly polarized wave |
| CN103947044A (en) * | 2011-11-16 | 2014-07-23 | 安德鲁有限责任公司 | Flat panel array antenna |
| CN205004441U (en) * | 2015-10-19 | 2016-01-27 | 浙江中星光电子科技有限公司 | Waveguide slot antenna and mfg method thereof |
-
2015
- 2015-10-19 CN CN201510679084.0A patent/CN105186113B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0295003A2 (en) * | 1987-06-09 | 1988-12-14 | THORN EMI plc | Antenna |
| KR100686606B1 (en) * | 2005-11-02 | 2007-02-26 | 위월드 주식회사 | Waveguide slot array antenna for receiving circularly polarized wave |
| CN103947044A (en) * | 2011-11-16 | 2014-07-23 | 安德鲁有限责任公司 | Flat panel array antenna |
| CN205004441U (en) * | 2015-10-19 | 2016-01-27 | 浙江中星光电子科技有限公司 | Waveguide slot antenna and mfg method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034386A (en) * | 2019-03-26 | 2019-07-19 | 北京遥测技术研究所 | Low axis can large-angle scanning Waveguide slot linear array antenna than high efficiency |
| CN110034386B (en) * | 2019-03-26 | 2020-10-23 | 北京遥测技术研究所 | Low-axis-ratio high-efficiency wide-angle scanning waveguide slot linear array antenna |
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| CN105186113B (en) | 2018-07-17 |
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Address after: No. 168, Xiushui Road, Yuelin street, Fenghua District, Ningbo City, Zhejiang Province Patentee after: ZHEJIANG CHINASTAR ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 317500, No. 688, Central Avenue, new urban district, Taizhou, Zhejiang, Wenling Patentee before: ZHEJIANG CHINASTAR ELECTRONIC SCIENCE & TECHNOLOGY Co.,Ltd. |
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