CN104993243B - Ultra wide band electromagnetic horn - Google Patents
Ultra wide band electromagnetic horn Download PDFInfo
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- CN104993243B CN104993243B CN201510396856.XA CN201510396856A CN104993243B CN 104993243 B CN104993243 B CN 104993243B CN 201510396856 A CN201510396856 A CN 201510396856A CN 104993243 B CN104993243 B CN 104993243B
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- rear feed
- ridge
- wide band
- ultra wide
- side wall
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Abstract
The present invention provides a kind of ultra wide band electromagnetic horn,Rear feed cavity segment is converted including pattern,Coaxial line excited part,Double ridged horn parts,It includes rear feed chamber cavity that pattern, which converts rear feed cavity segment,,Short board,Cross protrusion,Wedge,Italic,Upper ridge and lower ridge,The antenna utilizes metallic sheath,Short board,Italic,Wedge,The structures such as loudspeaker narrow side side wall make antenna obtain smaller voltage standing wave ratio and good antenna pattern,In the entire frequency range of Antenna Operation,Efficiently reduce the standing wave of antenna,Improve gain,Loudspeaker narrow side side wall is made of the adjustable metal gate in position,So that electromagnetic horn not only has good low frequency characteristic,And high frequency radiation directional diagram is not in deteriorate,Satisfied impedance matching and radiation characteristic are obtained in 0.8~20GHz broadbands,It is big with power capacity,Bandwidth,High gain,The advantages that good directionality.
Description
Technical field
The present invention relates to a kind of Novel ultra wide band electromagnetic horns of improvement standing wave when high frequency radiation characteristic, can be applied to electricity
The detection of magnetic compatibility, microwave test and radar communications system etc..
Background technology
Ultra-wideband antenna technology is a research hotspot outside Now Domestic.It originates from military radar field previously,
Its brilliance is had been proven that in the advanced military technology such as radar detection, anti-stealth technololgy, electronic countermeasure.In recent years, ultra-wide
Band technology has gradually been introduced into civil field, and the ULTRA-WIDEBAND RADAR in military and civilian field and the ultra-wideband antenna of communication system are standby
Paid attention to, is obtained in the transient electromagnetic fields such as broadband connections, spread spectrum communication, Ground Penetrating Radar, impulse radar, electromagnetic compatibility field a large amount of
Using.However existing Broadband Horn Antenna using adjustable metal gate side wall or is not a fixed metal sidewall,
It is a closed metal sidewall.Carrying out microwave test or when microwave applications, cannot meet simultaneously all frequency ranges have it is good
Good voltage standing wave(VSW) when antenna pattern；The design of rear feed cavity impedance compatible portion is also not perfect, after cannot effectively inhibiting
Radiation to electromagnetic wave, the gain for reducing standing wave, improving electromagnetic horn.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of improvement standing wave when high frequency spokes
Penetrate the Novel ultra wide band electromagnetic horn of characteristic.
Technical solution of the present invention is as follows：
A kind of ultra wide band electromagnetic horn, including：Pattern conversion rear feed cavity segment is embedded in pattern conversion rear feed cavity segment
Coaxial line excited part, with pattern conversion rear feed cavity segment close-connected double ridged horn parts.
The pattern converts rear feed cavity segment：Rear feed chamber cavity, the short board of rear feed chamber cavity bottom, the rear feed
The cross protrusion of chamber chamber central, the midpoint of two narrow sides of the rear feed chamber cavity is respectively equipped with two wedges, the wedge position
It is in close contact in the both sides up and down of cross protrusion and with the two sides up and down of cross protrusion, the left and right two of the wedge
Side is respectively equipped with an italic, and the italic extends to the left and right sides with the wedge from four overturning angles of the rear feed chamber cavity
Face edge is in close contact, the embedded upper ridge for being parallel to direction of an electric field between two italics at two broadside midpoints of the rear feed chamber cavity
With lower ridge, the upper ridge and lower ridge are located at the left and right sides of cross protrusion and are closely connect with the left and right edges of cross protrusion
It touches, the upper ridge and lower ridge have the curved portion extended along the direction of propagation in double ridged horn parts.
It is preferred that the coaxial excitation part include cylinder table, be inserted into cylinder table in diameter be less than cylinder table
Metallic sheath, the diameter that is inserted into metallic sheath be less than the coaxial probe of metallic sheath, under cylinder table and double ridged horn parts
Ridge is connected, and the coaxial probe is inserted into the upper ridge and lower ridge along direction of an electric field.
The metallic sheath of stretching is equivalent to an offered load, thus it is possible to vary the current distribution on probe, so as to improve its spoke
Penetrate characteristic.The gradual change of coaxial probe, metallic sheath and cylinder table forms coaxial impedance converter so that the coaxial conversion to ridge
Resistance matching problem is improved.
The coaxial probe is fixed on the broadside of rear feed chamber cavity and the coupling aperture of upper ridge, and ensures the coupling above the two
It is concentric to close hole；Cylinder table and the lower ridge of double ridged horn parts form an entirety using identical material, and metallic sheath and cylinder table are used
Conducting resinl cements, and ensures good contact.
It is preferred that the curved portion of the upper ridge and lower ridge is that exponential curve is modified plus a linear segment
Ridge made of curve gradual change, meets formula：
Z (y)=0.02y+z (0) eky(0≤y≤L),Wherein z is indicated and the center of upper and lower ridge
Vertical range, y indicate that the vertical range from waveguide rear feed chamber short circuit version, z (0)=0.5mm indicate the initial value from origin,
L indicates the whole length of ridge, and the value of k is as shown by the equation.
It is preferred that double ridged horn parts are the frustum being made of loudspeaker broadside side wall, loudspeaker narrow side side wall,
The close connection mode in top of frustum converts rear feed cavity segment, and the loudspeaker narrow side side wall of double ridged horn parts is equipped with along biography
Broadcast the adjustable metal gate in direction position.
It is preferred that the loudspeaker narrow side side wall of double ridged horn parts is equipped with the adjusting being arranged along the direction of propagation
Slot, the metal gate are bolted in regulating tank.
It is preferred that the regulating tank is a straight slot being arranged along the direction of propagation, when each metal gate is combined closely
When side wall constitute a continuous metal covering.
When traditional Broadband Horn Antenna is operated in 12GHz frequencies or more, the antenna pattern of main lobe can split into 4
A big secondary lobe, and gain drops to only 6dBm.The metal electromagnetic horn high frequency performance for opening boundary is relatively good, but low frequency
(1~4GHz) performance is bad, and gain is low, standing wave is big.And after changing the side wall of electromagnetic horn into adjustable metal gate, by them
The performance of boundary electromagnetic horn can be met open by being uniformly distributed, high-frequency gain it is good and more than 12GHz after, main lobe pattern does not have
Deteriorate, side wall constitutes a continuous metal covering to become a traditional electromagnetic horn side again when metal gate is combined closely
Wall can make the low frequency performance of antenna improve, and standing wave reduces, and gain becomes larger.
It is preferred that the metal gate is 3-8,6~8mm of width of the metal gate.
It is unfavorable for adjusting metal gate if metal gate is too many or too wide, meets best working efficiency, very little or too
If narrow, side wall cannot be made to constitute a complete face, the impedance matching of low frequency can be bad.
It is preferred that the length of the cross protrusion is 12~14mm, 4~6mm of width, 4~6mm of height.
Such size can form good impedance matching, reduce electromagnetic wave backward radiation, reduce standing wave, improve increasing
Benefit.
Working principle of the invention is as follows：
Electromagnetic wave passes through coaxial probe to be transmitted from the broadside center of rear feed chamber cavity perpendicular to ridge waveguide by coupling aperture
Direction feed-in, initially enters mode switching section.Structurally, mode switching section is mainly by coaxial probe, metallic sheath, circle
Pylon and upper ridge, lower ridge are constituted.In order to preferably carry out pattern conversion, then metallic sheath is transitioned into again by coaxial probe
Being transitioned into the mode of cylinder table keeps energy of electromagnetic field more matched to be transformed into ridge waveguide section from coaxial probe.It is transmitted in coaxial line
Subject to TEM waves, electric field is symmetrical about the directions Φ, is evenly distributed in coaxial probe, coaxial probe pass through upper ridge after electromagnetic field
Power dissipation, but electric field energy has mainly been concentrated between upper ridge and lower ridge.Electric field energy can be from coaxial probe in this way
In be gradually transitioned into ridge waveguide section.
On short board plus a cross protrusion has been set, and has been embedded into pattern conversion rear feed cavity segment, short circuit can not only be made
Plate and pattern conversion rear feed cavity segment contact, and the direction of the radiation characteristic especially high band of electromagnetic horn can be improved
Figure.The presence of italic makes the narrow side of pattern conversion rear feed chamber be gradually expanded, and this transition can be such that the standing-wave ratio of antenna obtains
To improvement；And the presence of wedge can effectively improve the standing wave of antenna and the directional diagram of high band.
The narrow side of double ridged horn parts is made of a plurality of adjustable metal grid, and this structure can be while ensureing electric current transmission
Greatly reduce the return loss of antenna so that electromagnetic horn has good standing wave ratio characteristic when being operated in low frequency, is operated in
Directional diagram is not in deteriorate when high frequency, so as to improve the radiation characteristic of antenna.
As described above, the invention has the advantages that：The antenna uses straight cutting feed-type structure, by coaxially arriving ridge
Conversion, electromagnetic energy is fed into antenna；Made using structures such as metallic sheath, short board, italic, wedge, loudspeaker narrow side side walls
It obtains antenna and obtains smaller voltage standing wave ratio and good antenna pattern, rear feed chamber uses the impedance matching side of decussate texture
Formula efficiently reduces the standing wave of antenna, improves gain in the entire frequency range of Antenna Operation, with coaxially to ridge transition and
The methods of impedance matching carries out analysis design, and loudspeaker narrow side side wall is made of the adjustable metal gate in position so that electromagnetic horn is not
Only there is good low frequency characteristic, and high frequency radiation directional diagram is not in deteriorate, and is obtained in 0.8~20GHz broadbands
Satisfied impedance matching and radiation characteristic, the ultra-wide based on adjustable metal grid side wall, cross rear feed cavity configuration designed herein
Band electromagnetic horn is because big with power capacity, the advantages that bandwidth, high gain, good directionality, in space flight and aviation, meteorology communication
Good application prospect will be had with fields such as modern militaries.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the structural schematic diagram of the coaxial line excited part of the present invention.
Fig. 3 is the structural schematic diagram of the pattern conversion rear feed cavity segment of the present invention.
Fig. 4 is the structural schematic diagram of the loudspeaker narrow side side wall of double ridged horn parts of the present invention.
Fig. 5 is the stereoscopic schematic diagram of double ridged horn parts of the present invention.
Fig. 6 is the VSWR curves of the present invention.
Fig. 7 is the present invention in the faces E of 12GHz and H surface radiation directional diagrams.
Piece mark explanation
1 is coaxial line excited part, and 2 be pattern conversion rear feed cavity segment, and 3 be double ridged horn parts, and 11 be coaxial line, 12
It is metallic sheath, 13 be cylinder table, and 21 be short-circuit version, and 22 be italic, and 23 be wedge, and 211 be cross protrusion, and 24 be rear feed chamber chamber
Body, 241 be narrow side, and 242 be broadside, and 31 be lower ridge, and 32 be upper ridge, and 33 be loudspeaker broadside side wall, and 34 be loudspeaker narrow side side wall,
110 be coaxial probe, and 111 be coupling aperture, and 36 be curved portion, and 37 be metal gate, and 38 be regulating tank.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
A kind of ultra wide band electromagnetic horn, including：Pattern conversion rear feed cavity segment 2 is embedded in pattern conversion rear feed cavity segment
In coaxial line excited part 1, with 2 close-connected double ridged horn parts 3 of pattern conversion rear feed cavity segment,
The pattern converts rear feed cavity segment：The short board 21, described of rear feed chamber cavity 24, rear feed chamber cavity bottom
The midpoint of the cross protrusion 211 of rear feed chamber chamber central, two narrow sides 241 of the rear feed chamber cavity is respectively equipped with two wedges
23, the wedge is located at the both sides up and down of cross protrusion and is in close contact with the two sides up and down of cross protrusion, institute
The italic 22 that is respectively arranged on the left side and the right side of wedge is stated, the italic is extended to from four overturning angles of the rear feed chamber cavity and institute
The left and right sides edge for stating wedge is in close contact, embedded between two italics at two broadsides, 242 midpoint of the rear feed chamber cavity
Be parallel to the upper ridge 32 of direction of an electric field and lower ridge 31, the upper ridge 32 and lower ridge 31 be located at the left and right sides of cross protrusion and
It is in close contact with the left and right edges of cross protrusion, the upper ridge and lower ridge have in double ridged horn parts along direction of propagation extension
Curved portion 36.
The coaxial excitation part 1 include cylinder table 13, be inserted into cylinder table in diameter be less than cylinder table metallic sheath 12,
The diameter being inserted into metallic sheath is less than the coaxial probe 110 of metallic sheath 12, the lower ridge of cylinder table 13 and double ridged horn parts
It is connected, the coaxial probe is inserted into the upper ridge and lower ridge along direction of an electric field.
The metallic sheath of stretching is equivalent to an offered load, thus it is possible to vary the current distribution on probe, so as to improve its spoke
Penetrate characteristic.The gradual change of coaxial probe, metallic sheath and cylinder table forms coaxial impedance converter so that the coaxial conversion to ridge
Resistance matching problem is improved.
Coaxial probe 110 in coaxial line 11 is fixed on the broadside of rear feed chamber cavity and the coupling aperture 111 of upper ridge, and is protected
The coupling aperture demonstrate,proved above the two is concentric；Cylinder table and the lower ridge of double ridged horn parts form an entirety, gold using identical material
Belong to set and cylinder table 13 is cemented with conducting resinl, ensures good contact.
The curved portion of the upper ridge and lower ridge is that exponential curve is formed plus the modified curve gradual change of a linear segment
Ridge, meet formula：
Z (y)=0.02y+z (0) eky(0≤y≤L),Wherein z is indicated and the center of upper and lower ridge
Vertical range, y indicate that the vertical range from waveguide rear feed chamber short circuit version, z (0)=0.5mm indicate the initial value from origin,
L indicates the whole length of ridge, and the value of k is as shown by the equation.
Double ridged horn parts 3 are the frustum being made of loudspeaker broadside side wall 33, loudspeaker narrow side sidewall 34, the top of frustum
Close connection mode conversion rear feed cavity segment 2 is held, the loudspeaker narrow side sidewall 34 of double ridged horn parts is equipped with along propagation side
To the adjustable metal gate in position 37.
The loudspeaker narrow side sidewall 34 of double ridged horn parts is equipped with the regulating tank 38 being arranged along the direction of propagation, the gold
Belong to grid to be bolted in regulating tank 38.
The regulating tank 38 is a straight slot being arranged along the direction of propagation, each metal gate can be adjusted to be close in one in this way
Rising makes it combine closely, then side wall constitutes a metal covering being continuously made of metal gate.
When traditional Broadband Horn Antenna is operated in 12GHz frequencies or more, the antenna pattern of main lobe can split into 4
A big secondary lobe, and gain drops to only 6dBm.The metal loudspeaker high frequency performance for opening boundary is relatively good, but low frequency (1~
4GHz) performance is bad, and gain is low, standing wave is big.And after changing the side wall of electromagnetic horn into adjustable metal gate, uniformly by them
Distribution can meet open the performance of boundary electromagnetic horn, high-frequency gain it is good and more than 12GHz after, main lobe pattern is not disliked
Change, side wall constitutes a continuous metal covering to become a traditional electromagnetic horn side again when metal gate is combined closely
Wall can make the low frequency performance of antenna improve, and standing wave reduces, and gain becomes larger.
The metal gate is 3-8, and the width of each metal gate is 6~8mm.It is unfavorable if metal gate is too many or too wide
In adjusting metal gate, meet best working efficiency, if very little or too narrow, side wall cannot be made to constitute one completely
The impedance matching in face, low frequency can be bad.
The length of the cross protrusion is 12~14mm, 4~6mm of width, 4~6mm of height.
Such size can form good impedance matching, reduce electromagnetic wave backward radiation, reduce standing wave, improve increasing
Benefit.
From fig. 6, it can be seen that antenna is in the entire working band of 0.8~20GHz, standing wave is both less than 2, meets antenna work
The standing wave requirement of work.From figure 7 it can be seen that the antenna pattern of 12GHz or more does not deteriorate, the work band greatly improved
Width improves high frequency performance.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (7)
1. a kind of ultra wide band electromagnetic horn, which is characterized in that including：Pattern conversion rear feed cavity segment, after being embedded in pattern conversion
It presents the coaxial line excited part in cavity segment, convert the close-connected double ridged horn parts of rear feed cavity segment with pattern,
The pattern converts rear feed cavity segment：Rear feed chamber cavity, the short board of rear feed chamber cavity bottom, the rear feed chamber chamber
The cross protrusion at body center, the midpoint of two narrow sides of the rear feed chamber cavity are respectively equipped with two wedges, and the wedge is located at institute
It states the both sides up and down of cross protrusion and is in close contact with the two sides up and down of cross protrusion, the left and right sides point of the wedge
Not She You an italic, the italic extends to the left and right sides side with the wedge from four overturning angles of the rear feed chamber cavity
Edge is in close contact, and the embedded upper ridge for being parallel to direction of an electric field is under between two italics at two broadside midpoints of the rear feed chamber cavity
Ridge, the upper ridge and lower ridge are located at the left and right sides of cross protrusion and are in close contact with the left and right edges of cross protrusion, institute
Stating ridge and lower ridge has the curved portion extended along the direction of propagation in double ridged horn parts；It serves as reasons double ridged horn parts
The close connection mode in top of the frustum of loudspeaker broadside side wall, loudspeaker narrow side side wall composition, frustum converts rear feed cavity segment, described
The loudspeaker narrow side side wall of double ridged horn parts is equipped with along the adjustable metal gate in direction of propagation position.
2. ultra wide band electromagnetic horn according to claim 1, it is characterised in that：The coaxial excitation part includes cylinder
Platform, the diameter being inserted into cylinder table are less than the coaxial spy that the diameter in the metallic sheath of cylinder table, insertion metallic sheath is less than metallic sheath
Needle, cylinder table are connected with the lower ridge of double ridged horn parts, and the coaxial probe is inserted into the upper ridge under along direction of an electric field
Ridge.
3. ultra wide band electromagnetic horn according to claim 1, it is characterised in that：The curved portion of the upper ridge and lower ridge is
Exponential curve adds ridge made of the modified curve gradual change of a linear segment, meets formula
Z (y)=0.02y+z (0) eky(0≤y≤L),Wherein z indicate it is vertical with the center of upper and lower ridge away from
From y indicates that the vertical range from waveguide rear feed chamber short circuit version, z (0)=0.5mm indicate that the initial value from origin, L indicate
The whole length of ridge, the value of k is as shown by the equation.
4. ultra wide band electromagnetic horn according to claim 1, it is characterised in that：The loudspeaker narrow side of double ridged horn parts
Side wall is equipped with the regulating tank being arranged along the direction of propagation, and the metal gate is bolted in regulating tank.
5. ultra wide band electromagnetic horn according to claim 4, it is characterised in that：The regulating tank is to be arranged along the direction of propagation
A straight slot, when each metal gate is combined closely side wall constitute a continuous metal covering.
6. ultra wide band electromagnetic horn according to claim 1, it is characterised in that：The metal gate is 3-8, the metal
6~8mm of width of grid.
7. ultra wide band electromagnetic horn according to claim 1, it is characterised in that：The length of the cross protrusion be 12~
14mm, 4~6mm of width, 4~6mm of height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510396856.XA CN104993243B (en) | 2015-07-08 | 2015-07-08 | Ultra wide band electromagnetic horn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510396856.XA CN104993243B (en) | 2015-07-08 | 2015-07-08 | Ultra wide band electromagnetic horn |
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| CN104993243A CN104993243A (en) | 2015-10-21 |
| CN104993243B true CN104993243B (en) | 2018-08-24 |
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| CN201510396856.XA Active CN104993243B (en) | 2015-07-08 | 2015-07-08 | Ultra wide band electromagnetic horn |
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| CN105390816B (en) * | 2015-10-28 | 2018-05-22 | 西安电子科技大学 | A kind of ultra wide band TEM electromagnetic horns and modeling method |
| CN105322298B (en) * | 2015-12-02 | 2018-02-16 | 成都润博科技有限公司 | A kind of adaptivity multiband integrated impedance matching network double-ridged horn antenna |
| CN105449368B (en) * | 2015-12-02 | 2018-03-23 | 成都润博科技有限公司 | A kind of double ridge antennas of multipolarization adaptive RF |
| CN105322299B (en) * | 2015-12-02 | 2018-02-16 | 成都润博科技有限公司 | A kind of double ridge antennas of high-gain regulation broadband ripple |
| CN105720373B (en) * | 2016-02-01 | 2018-08-17 | 西安电子科技大学 | Broadband double-ridged horn antenna |
| CN108352604A (en) * | 2016-07-19 | 2018-07-31 | 华为技术有限公司 | A kind of power coupling test device |
| JP7103860B2 (en) | 2017-06-26 | 2022-07-20 | 日本電産エレシス株式会社 | Horn antenna array |
| CN109509982A (en) * | 2018-12-04 | 2019-03-22 | 安徽站乾科技有限公司 | A kind of high-gain broadband electromagnetic horn |
| CN109713453A (en) * | 2018-12-26 | 2019-05-03 | 北京无线电计量测试研究所 | A kind of time domain double-ridged horn antenna |
| CN109687154B (en) * | 2019-02-22 | 2023-09-26 | 北京星英联微波科技有限责任公司 | Ultra-wideband horn antenna with double-ridge structure |
| CN112886255B (en) * | 2021-02-07 | 2021-12-21 | 北京星英联微波科技有限责任公司 | 5G ultra-wideband small-sized dual-polarized horn antenna |
| CN112886253B (en) * | 2021-02-07 | 2021-11-30 | 北京星英联微波科技有限责任公司 | Compact 5G millimeter wave dual-polarized horn antenna |
| CN113594702B (en) | 2021-07-28 | 2022-03-04 | 北京星英联微波科技有限责任公司 | Ultra-wideband antenna using wave-absorbing material and medium |
| CN114552183B (en) * | 2022-02-25 | 2023-06-06 | 中国电子科技集团公司第二十九研究所 | X/Ku wave band radiator and implementation method |
| CN114824808A (en) * | 2022-04-18 | 2022-07-29 | 成都飞机工业（集团）有限责任公司 | Double-ridge horn antenna based on linear tapered ridge width |
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Effective date of registration: 20230118 Address after: 610000 No. a108, innovation center, No. 4, Xixin Avenue, hi tech Zone (West District), Chengdu, Sichuan Patentee after: CHENGDU ENCHI MICROWAVE TECHNOLOGY Co.,Ltd. Address before: 611731, No. 2006, West Avenue, Chengdu hi tech Zone (West District, Sichuan) Patentee before: University of Electronic Science and Technology of China |