CN201956462U - UWB curved TEM horn - Google Patents
UWB curved TEM horn Download PDFInfo
- Publication number
- CN201956462U CN201956462U CN2010205993592U CN201020599359U CN201956462U CN 201956462 U CN201956462 U CN 201956462U CN 2010205993592 U CN2010205993592 U CN 2010205993592U CN 201020599359 U CN201020599359 U CN 201020599359U CN 201956462 U CN201956462 U CN 201956462U
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- horn
- lower blade
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- loudspeaker
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Abstract
The utility model relates to a UWB (Ultra Wide Band) curved TEM (Transverse Electric and Magnetic Field) horn. The TEM horn comprises a horn and a feeding part, wherein the horn consists of an upper blade (5) and a lower blade (3) which are both made of pure metal and take the willow-leaf-like curved shapes, and the narrow ends of both the upper blade (5) and the lower blade (3) are connected together; and the feeding part adopts the format that coaxial feeding is converted into waveguide, an outer conductor (2) of a coaxial cable is connected with the lower blade (3), an inner conductor (4) is exposed outside and connected with the upper blade (5) to form electric potential difference, and the coaxial cable is a semi-steel cable. The utility model has the benefits that UWB bandwidth (the relative working bandwidth is above 1:10) is realized; the in-band gain is above 6dBi; as the all-metal structure is adopted, the power resistance can reach thousands of watts; and the processing technology is mature, and the implementation of the structure is more convenient.
Description
Technical field
The utility model relates to a kind of ultra broadband curved surface TEM loudspeaker, belongs to the microwave antenna technical field.
Background technology
ULTRA-WIDEBAND RADAR is a kind of New System radar that dark both at home and abroad in recent years people studies, and in project is listed it as key technology for successive years by U.S. Department of Defense.Compare with the Narrow-band Radar of routine, its antijamming capability is strong, detects target easily from strong clutter background, and the attribute of energy recognition objective can be to many superiority such as target imagings, and particularly it has good anti-stealthy potentiality, thereby has been subjected to paying attention to widely.Application form as the time domain ultra-wideband antenna of electromagnetic radiation pulse has a lot, mainly contain simple monopole and dipole antenna, complicated reflector antenna, bow-tie antenna, horn antenna, Archimedian spiral antenna, logarithm periodic antenna, micro-strip paster antenna etc. and their distortion separately.Common ultra-wideband antenna such as logarithm periodic antenna, the high-frequency electromagnetic energy of different frequency are by the different piece radiation of antenna.It is little that this antenna can make antenna parameter change in extremely wide frequency range, thereby realize the ultra broadband characteristic.But the ultra broadband logarithm periodic antenna is a kind of dispersive-antenna, produces the chromatic dispersion waveform, do not have fixing phase center, and on the different azimuth of antenna, wave form varies is violent, and many shortcomings make can't be used in the anti-stealthy Radar Technology of ultra broadband.And the disk antenna is commonly used in the ultra broadband compact antenna system, the ripple that it produces is a non-dispersive wave, is similar to Gaussian function, but this antenna is non-directivity antennas, usually be applied in the miniaturization Design of ultra-wideband communications, the specification requirement of ULTRA-WIDEBAND RADAR system is not satisfied in its gain.
The TEM loudspeaker are current most typical directed radiation ultra-wideband antennas, and this ultra broadband TEM horn antenna both had been widely used as single emission or reception antenna, also was used as array element.This antenna is simple because of feed structure, certain directivity and gain are arranged, without male offspring to advantages such as radiation, can be used in radar engineering and the electromagnetism field tests, for example, as the dual-mode antenna of ultra broadband, the feed of broadband system and the research that is used for the scattering properties of target, and be widely used.The array that adopts a plurality of element antennas to form can improve radiant power and power density, and control its radiation characteristic very easily, and in antenna array, horn antenna is as array element, and is more much smaller than the mutual coupling of antennas such as logarithm period; It has ultra broadband and does not have the chromatic dispersion characteristic, and existing ultra-wideband antenna substantially all is the distortion of TEM loudspeaker transmission line, and it is radiation and frequency-independent under the situation of endless, generation be spherical wave, and have good waveform fidelity ability.Be subjected to the restriction of antenna port center and edge phase difference, generally requiring loudspeaker to dehisce can not be too big.
The utility model content
Technical problem to be solved:
The TEM loudspeaker form that has the ultra broadband characteristic for instantaneous ULTRA-WIDEBAND RADAR antenna System Design is a kind of, this loudspeaker form both can be used as radiating element, also can be used as the feed of reflector antenna, realize the bandwidth of 1:10 at least, high-gain, anti-high-power design form in the band provide transport vehicle for the instantaneous ultra broadband time domain radar work of New System.
Technical scheme:
A kind of ultra broadband curved surface TEM loudspeaker comprise loudspeaker and feed part; Loudspeaker are made up of blade and lower blade, and blade and lower blade are selected the simple metal material for use, and profile adopts the curved surface form of wicker leaf shape, and the narrow end of blade and lower blade links to each other; Feed partly adopts the form of coaxial feed to waveguide transitions, and the outer conductor of coaxial line is connected with lower blade, and inner wire is naked to be gone out, and links to each other with blade, forms electrical potential difference, and wherein coaxial line uses the half steel cable.
Beneficial effect:
1) realization of ultra broadband bandwidth (more than the work relative bandwidth 1:10);
2) gain more than 6dBi in the band;
3) all-metal construction, its anti-power can reach kilowatt;
4) process technology maturation, structure realizes more convenient.
Description of drawings
Fig. 1 is a ultra broadband curved surface TEM horn structure schematic diagram;
Fig. 2 is Figure 1A place side-looking partial enlarged drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
To shown in Figure 2, ultra broadband curved surface TEM loudspeaker of the present utility model comprise loudspeaker and feed part as Fig. 1;
Loudspeaker are made up of blade 5 and lower blade 3, and blade 5 and lower blade 3 are selected the simple metal material for use, have very strong anti-
Power-performance, profile adopts the curved surface form of wicker leaf shape, and blade 5 links to each other with the narrow end of lower blade 3;
The feed form: feed partly adopts the form of coaxial feed to waveguide transitions, the outer conductor 2 of coaxial line is connected with lower blade 3, inner wire 4 is naked to be gone out, link to each other with blade 5, form electrical potential difference, wherein coaxial line uses the half steel cable of anti-the high power, avoids electromagnetism to puncture, and in case of necessity cable section is invaded in the insulating oil.
Fixed form: adopt wooden pillar to install and fix the loudspeaker face, under the not obvious situation that influences loudspeaker standing-wave ratio and radiation lobe, between the loudspeaker blade, add the medium post to support horn structure.
The impedance conversion form: the impedance of coaxial line 50 Ω is adopted the profile of curved surface to free space 377 Ω conversion, makes impedance variation gradual change and not mutated.
The final loudspeaker bandwidth that realizes of the utility model is 1:10, gains more than the sub-6dBi in the band.
Though the utility model with preferred embodiment openly as above; but they are not to be used for limiting the utility model; anyly be familiar with this skill person; in the spirit and scope that do not break away from the utility model; can do various variations or retouching from working as, what therefore protection range of the present utility model should be defined with the application's claim protection range is as the criterion.
Claims (1)
1. ultra broadband curved surface TEM loudspeaker is characterized in that: comprise loudspeaker and feed part; Loudspeaker are by blade (5)
And lower blade (3) composition, blade (5) and lower blade (3) are selected the simple metal material for use, and profile adopts the curved surface form of wicker leaf shape, and blade (5) links to each other with the narrow end of lower blade (3);
Feed partly adopts the form of coaxial feed to waveguide transitions, and the outer conductor of coaxial line (2) is connected with lower blade (3), and inner wire (4) is naked to be gone out, and links to each other with blade (5), forms electrical potential difference, and wherein coaxial line uses the half steel cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205993592U CN201956462U (en) | 2010-11-10 | 2010-11-10 | UWB curved TEM horn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205993592U CN201956462U (en) | 2010-11-10 | 2010-11-10 | UWB curved TEM horn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956462U true CN201956462U (en) | 2011-08-31 |
Family
ID=44500564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205993592U Expired - Lifetime CN201956462U (en) | 2010-11-10 | 2010-11-10 | UWB curved TEM horn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956462U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064853A (en) * | 2014-07-07 | 2014-09-24 | 北京古大仪表有限公司 | Foldable horn radar antenna |
| CN104218322A (en) * | 2014-08-15 | 2014-12-17 | 中国人民解放军63655部队 | Receiving antenna for high-power microwave radiation field measuring system |
| CN106299709A (en) * | 2016-08-08 | 2017-01-04 | 上海交通大学 | The broadband TEM electromagnetic horn of compact high directionality |
| CN109546347A (en) * | 2018-10-30 | 2019-03-29 | 北京航空航天大学 | A kind of TEM electromagnetic horn of the compound crescent moon groove design of three-stage |
| CN110289486A (en) * | 2019-06-28 | 2019-09-27 | 南京邮电大学 | Wide band high-gain electromagnetic horn |
| CN110323568A (en) * | 2019-06-28 | 2019-10-11 | 南京邮电大学 | Pyramidal horn antenna |
| CN112088468A (en) * | 2018-02-23 | 2020-12-15 | 上海诺基亚贝尔股份有限公司 | Broadband slotted antenna with elliptically polarized cavity backing |
-
2010
- 2010-11-10 CN CN2010205993592U patent/CN201956462U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064853A (en) * | 2014-07-07 | 2014-09-24 | 北京古大仪表有限公司 | Foldable horn radar antenna |
| CN104218322A (en) * | 2014-08-15 | 2014-12-17 | 中国人民解放军63655部队 | Receiving antenna for high-power microwave radiation field measuring system |
| CN106299709A (en) * | 2016-08-08 | 2017-01-04 | 上海交通大学 | The broadband TEM electromagnetic horn of compact high directionality |
| CN106299709B (en) * | 2016-08-08 | 2019-05-24 | 上海交通大学 | The broadband TEM electromagnetic horn of compact high directionality |
| CN112088468A (en) * | 2018-02-23 | 2020-12-15 | 上海诺基亚贝尔股份有限公司 | Broadband slotted antenna with elliptically polarized cavity backing |
| CN112088468B (en) * | 2018-02-23 | 2024-01-09 | 上海诺基亚贝尔股份有限公司 | Broadband slotted antenna with elliptically polarized cavity backing |
| CN109546347A (en) * | 2018-10-30 | 2019-03-29 | 北京航空航天大学 | A kind of TEM electromagnetic horn of the compound crescent moon groove design of three-stage |
| CN109546347B (en) * | 2018-10-30 | 2020-10-20 | 北京航空航天大学 | TEM horn antenna of compound crescent moon cell type design of syllogic |
| CN110289486A (en) * | 2019-06-28 | 2019-09-27 | 南京邮电大学 | Wide band high-gain electromagnetic horn |
| CN110323568A (en) * | 2019-06-28 | 2019-10-11 | 南京邮电大学 | Pyramidal horn antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
|
| CX01 | Expiry of patent term |