CN202395161U - High power beamforming vehicle-mounted antenna with two-stage structure - Google Patents
High power beamforming vehicle-mounted antenna with two-stage structure Download PDFInfo
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- CN202395161U CN202395161U CN2011205507936U CN201120550793U CN202395161U CN 202395161 U CN202395161 U CN 202395161U CN 2011205507936 U CN2011205507936 U CN 2011205507936U CN 201120550793 U CN201120550793 U CN 201120550793U CN 202395161 U CN202395161 U CN 202395161U
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Abstract
The utility model discloses a high power beamforming vehicle-mounted antenna with a two-stage structure, comprising a plurality of groups of symmetrically-arranged vehicle-mounted communication antennas with same structures, wherein each pair of vehicle-mounted communication antennas comprise a circular polarizer, a millimeter wave cone horn antenna arranged above the circular polarizer and mutually connected with the circular polarizer, a lens arranged horizontally above the millimeter wave cone horn antenna, and a reflection plate arranged obliquely above the lens. The high-power beamforming vehicle-mounted antenna with a two-stage structure is reasonable in arrangement, compact in structure, good in process, stable and reliable in working, excellent in universality of main components, and convenient in maintenance in the process of use, has an outstanding beamforming function, and can effectively avoid electromagnetic field interference of magnetic suspension high speed trains.
Description
Technical field
The utility model relates to the vehicle-mounted transmit/receive antenna terminal structure device of the car-ground high capacity communication of high-speed railway, particularly a kind of two segment structure high power wave beam forming car antennas.
Background technology
The car ground communication system of high-speed railway is a kind of high-capacity and high-speed communication system that just proposed in recent years, is primarily aimed at bullet train and in running, transmits with the short time large-capacity data of ground communication.Specific to the communication terminal antenna, require antenna that high efficiency is arranged, high power; High-gain; And the most important thing is to have very high directivity, particularly is directed against the communication system of magnetic-levitation train, the interference that so just can not cause communication system owing to the electromagnetic field of magnetic-levitation train itself.Aerial array is to guarantee that antenna has a kind of feasible antenna form of high directivity, but a large amount of antenna elements will inevitably cause the increase of the volume and weight of aerial array, is unfavorable for the installation of mobile unit; Though small-sized antenna microstrip array can guarantee the size and the weight of aerial array, its power and efficient then can't be effectively guaranteed.
Patent 200710093946.7 " collection figuration and pole-changing turn to the vehicle-mounted millimeter wave communication antenna of one " proposes with reflectarray antenna carry out the notion of figuration and polarization from the wave beam of conical horn outgoing; Effectively solve wave beam polarization, figuration and required the high-power problem of antenna; But its antenna structure has restriction to the figuration degree of wave beam; Its wave beam forming is mainly derived from two aspects; One be reflective array on the reflecting plate to figuration effect from the waveform of conical horn outgoing, another one is the compression of the circular arc of reflecting plate to the single direction of wave beam itself.This weak point to the figuration of antenna beam makes the last beam shape that forms of outgoing wave beam fail to reach completely the superfine requirement of vertical plane wave beam that bullet train (particularly magnetic-levitation train) is communicated by letter; The another one weak point of this patented technology is because antenna structure that this patent proposed need be realized through the reflective array on the reflecting plate the circular polarization from the line polarization wave of circular waveguide outgoing; Though this structure has been simplified and wave beam function of polarization relevant hardware structure, also make the circular polarization degree of wave beam receive the restriction of technology simultaneously.Under the present process conditions of China, can't control the circular polarization degree of wave beam accurately, thereby make standing-wave ratio can not control within the specific limits.
The utility model content
The purpose of the utility model provides a kind of two segment structure high power wave beam forming car antennas, and rationally distributed, compact conformation, good manufacturability, working stability are reliable, and the critical piece versatility is good, in use is convenient to safeguard; And remarkable wave beam forming function is arranged, can effectively avoid the high-speed magnetic suspension train interference of electromagnetic field.
In order to realize above purpose, the utility model is realized through following technical scheme:
A kind of two segment structure high power wave beam forming car antennas; Comprise the some groups of vehicle-carrying communication antennas that symmetrically arranged structure is identical; Described every secondary vehicle-carrying communication antenna comprises: circular polarizer, be arranged on circular polarizer top and and its interconnective millimeter wave conical-horn antenna, described every secondary vehicle-carrying communication antenna also comprises:
Lens, described lens are horizontally set on the top of millimeter wave conical-horn antenna;
Reflecting plate, described reflecting plate tiltedly is located at the top of lens.
The lower surface of described reflecting plate is downward protruding cambered surface, and described cambered surface is a segmental structure, and the place circle of the top arc of this cambered surface is different with the monosymmetric side arc of top arc place radius of a circle.
The center of circle that justify at the center of circle of top arc place circle and side arc place is on same middle transversal and do not overlap mutually.
Arc place, described top radius of a circle is less than side arc place radius of a circle.
Described reflecting plate becomes 45 ° ± 2 ° inclination angle with horizontal plane.
The lower surface of described reflecting plate is provided with some metal grizzly bars, and its upper surface covers metal level.
In described every group of vehicle-carrying communication antenna, the rotation direction of the wave beam behind each group baffle reflection is opposite.
The utility model compared with prior art has the following advantages:
1, rationally distributed, compact conformation, good manufacturability, working stability are reliable;
2, the critical piece versatility is good, in use is convenient to safeguard;
3, remarkable wave beam forming function is arranged, can effectively avoid the interference of electromagnetic field of bullet train.
Description of drawings
Fig. 1 is the structural representation of the two one-sided secondary vehicle-carrying communication antennas of a kind of two segment structure high power wave beam forming car antennas of the utility model;
Fig. 2 is the vertical view of the reflecting plate of a kind of two segment structure high power wave beam forming car antennas of the utility model;
Fig. 3 (a) is the left-hand circular polarization principle schematic of a kind of two segment structure high power wave beam forming car antennas of the utility model;
Fig. 3 (b) is the right-handed circular polarization sketch map of a kind of two segment structure high power wave beam forming car antennas of the utility model.
Embodiment
Below in conjunction with accompanying drawing,, the utility model is done further elaboration through specifying a preferable specific embodiment.
As shown in Figure 1; A kind of two segment structure high power wave beam forming car antennas comprise the some groups of vehicle-carrying communication antennas that symmetrically arranged structure is identical, in the present embodiment; Comprise two groups of symmetrically arranged vehicle-carrying communication antennas; I.e. 4 secondary vehicle-carrying communication antennas, described every secondary vehicle-carrying communication antenna comprises: circular polarizer 1, be arranged on circular polarizer 1 top and and its interconnective millimeter wave conical-horn antenna 2, every secondary vehicle-carrying communication antenna also comprises: lens 3, reflecting plate 4.In the present embodiment, millimeter wave conical-horn antenna 2 is selected subtended angle and the suitable conical-horn antenna of bore for use, makes its primary field directional diagram broad and don't ftractures.
As shown in Figure 1, lens 3 are horizontally set on the top of millimeter wave conical-horn antenna 2; Reflecting plate 4 tiltedly is located at the top of lens 3, and becomes 45 ° with horizontal plane ± 2 ° inclination angle, and promptly the angle with horizontally disposed lens 3 is 45 ° ± 2 °.
As shown in Figure 2, the lower surface of reflecting plate 4 is downward protruding cambered surface, and this cambered surface is a segmental structure; Its top arc 42 place radius of a circles, in the present embodiment, two sections side arcs 43 of top arc 42 both sides are symmetrically arranged; Both end sides arc 43 place radius of a circles are identical; This top arc 42 place radius of a circles are less than side arc 43 place radius of a circles, thereby this reflecting plate 4 is two segment structures, and the round center of circle in the center of circle of this arc place, top circle and side arc 43 places is on same middle transversal (middle transversal is the connecting line at the center of circle and arc center, top); But two centers of circle do not overlap mutually, form the orientation focus characteristics with this.(lobe that is azimuth plane is wide for the index request that satisfies vehicle-carrying communication antenna pattern radiation lobe width; The lobe of pitching face is extremely narrow; And most of concentration of energy in required lobe width scope); The reflecting plate 4 of two segment structures can also be through changing top arc 42 place radius of a circles and side arc 43 place radius of a circles; But do not change top arc 42 place circles and the home position relation of side arc 43 place circles and the magnitude relationship of radius, to adapt to high reflecting plate and low reflecting plate demands of different to beamwidth.
Shown in Fig. 3 (a) and Fig. 3 (b), in the present embodiment, the lower surface of reflecting plate 4 is provided with some metal grizzly bars 41, and its upper surface covers metal level, and this reflecting plate 4 adopts dielectric material, and the thickness of its dielectric material is d.
Thereby, shown in Fig. 3 (a) and Fig. 3 (b), in the every group symmetrically arranged two secondary vehicle-carrying communication antenna; Field like Fig. 3 (a) incident is divided into two parts; Wherein part realization reflection on the metal grizzly bar 41 of reflecting plate 4 lower surfaces, the Ex part in promptly scheming, a part gets into dielectric material inside in addition; Reflection is come out on the metal level of reflecting plate 4 upper surfaces, i.e. Ey part among the figure.Because Ey has partly passed through dielectric thickness d and reflects out again, so its phase place partly lagged behind 90 ° than Ex, and these two parts superpose a long way off and form left-hand circular polarization; Shown in Fig. 3 (b), Ex part than Ey part phase lag 90 °, thereby form right-handed circular polarization.Therefore, when wave beam after the lens outgoing, the rotation direction of the wave beam after 4 reflections of separately reflecting plate is opposite, promptly constitutes left-hand circular polarization and right-handed circular polarization, two kinds of polarization are isolated each other, can effectively overcome reciprocal influence.But the vehicle-carrying communication antenna of the utility model should be consistent with the rotation direction of the antenna faced on the base station communication antenna.
When using, in each secondary vehicle-carrying communication antenna, circular polarizer 1 also provides the transition from the rectangular waveguide to the circular waveguide when changing line polarization wave into circularly polarised wave; Can produce the broad radiation beam of a circular polarization, through millimeter wave conical-horn antenna 2 circularly polarised wave launched, 3 pairs of ripples from 2 outgoing of millimeter wave conical-horn antenna of lens carry out the wave beam forming first time; Owing to can be regarded as the wave beam of a misconvergence of beams,, have only the part of the wave beam plate 4 that can be reflected to receive so if directly let this a branch of ripple beat on reflecting plate 4 from the ripple of millimeter wave conical-horn antenna 2 outgoing; Thereby wasted energy greatly, therefore, behind lens figuration 3 first time; Can produce a wave beam that is to a certain degree narrowed, can incide on the reflecting plate 4 what energy was concentrated as far as possible, after reflecting plate 4 receives the wave beam of lens 3 incidents; Through reflection, form corresponding left-hand circular polarization and right-handed circular polarization, thereby realized accurate figuration wave beam; Under the constant situation of the azimuth plane of broad beam; Press narrow pitching ground roll bundle, produce a wave beam and reach designing requirement, and the parallel beam of concentration of energy; Make most of concentration of energy simultaneously in the 3dB beamwidth, this wave beam will dock with the base station communication antenna that is arranged on the rail both sides.
In sum, a kind of two segment structure high power wave beam forming car antennas of the utility model can effectively be avoided the high-speed magnetic suspension train interference of electromagnetic field, and remarkable wave beam forming function is arranged; Rationally distributed, compact conformation, good manufacturability, working stability are reliable; And the critical piece versatility is good, in use is convenient to safeguard.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection range of the utility model should be limited appended claim.
Claims (7)
1. segment structure high power wave beam forming car antenna; Comprise the some groups of vehicle-carrying communication antennas that symmetrically arranged structure is identical; Described every secondary vehicle-carrying communication antenna comprises: circular polarizer (1), be arranged on circular polarizer (1) top and with its interconnective millimeter wave conical-horn antenna (2); It is characterized in that described every secondary vehicle-carrying communication antenna also comprises:
Lens (3), described lens (3) are horizontally set on the top of millimeter wave conical-horn antenna (2);
Reflecting plate (4), described reflecting plate (4) tiltedly is located at the top of lens (3).
2. two segment structure high power wave beam forming car antennas according to claim 1; It is characterized in that; The lower surface of described reflecting plate (4) is downward protruding cambered surface; Described cambered surface is a segmental structure, and side arc (43) the place radius of a circle of top arc (42) the place radius of a circle of this cambered surface and top arc (42) both sides is different.
3. two segment structure high power wave beam forming car antennas according to claim 2 is characterized in that, the center of circle that justify at the center of circle of top arc (42) place circle and side arc (43) place is on same middle transversal and do not overlap mutually.
4. two segment structure high power wave beam forming car antennas according to claim 3 is characterized in that, described top arc (42) place radius of a circle is less than side arc (43) place radius of a circle.
5. two segment structure high power wave beam forming car antennas according to claim 2 is characterized in that described reflecting plate (4) becomes 45 ° ± 2 ° inclination angle with horizontal plane.
6. two segment structure high power wave beam forming car antennas according to claim 2 is characterized in that the lower surface of described reflecting plate (4) is provided with some metal grizzly bars (41), and its upper surface covers metal level.
7. two segment structure high power wave beam forming car antennas according to claim 1 is characterized in that, in described every group of vehicle-carrying communication antenna, the rotation direction of the wave beam after each group reflecting plate (4) reflection is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205507936U CN202395161U (en) | 2011-12-26 | 2011-12-26 | High power beamforming vehicle-mounted antenna with two-stage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205507936U CN202395161U (en) | 2011-12-26 | 2011-12-26 | High power beamforming vehicle-mounted antenna with two-stage structure |
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| CN202395161U true CN202395161U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205507936U Expired - Fee Related CN202395161U (en) | 2011-12-26 | 2011-12-26 | High power beamforming vehicle-mounted antenna with two-stage structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094666A (en) * | 2012-12-21 | 2013-05-08 | 西安电子工程研究所 | Millimeter wave omnidirectional circularly polarized antenna based on circularly polarized loudspeaker |
| CN106785426A (en) * | 2016-07-26 | 2017-05-31 | 深圳市鼎耀科技有限公司 | Broad beam millimeter wave circular polarized antenna |
| CN107275803A (en) * | 2017-05-31 | 2017-10-20 | 西安华讯天基通信技术有限公司 | A kind of millimeter wave reflection from lens formula intelligent antenna equipment |
| CN109818154A (en) * | 2017-11-21 | 2019-05-28 | 福特全球技术公司 | Motor vehicles with glass roof and with the aerial array being placed on glass roof |
| CN110637393A (en) * | 2017-06-05 | 2019-12-31 | 日立汽车***株式会社 | Antenna, array antenna, radar device and vehicle-mounted system |
| CN113126173A (en) * | 2019-12-30 | 2021-07-16 | 清华大学 | Passive security inspection equipment and receiving antenna unit thereof |
| EP4231042A1 (en) * | 2022-02-22 | 2023-08-23 | Infineon Technologies AG | Radar system, device comprising a radar system and method for operating a radar system |
-
2011
- 2011-12-26 CN CN2011205507936U patent/CN202395161U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094666A (en) * | 2012-12-21 | 2013-05-08 | 西安电子工程研究所 | Millimeter wave omnidirectional circularly polarized antenna based on circularly polarized loudspeaker |
| CN103094666B (en) * | 2012-12-21 | 2015-04-08 | 西安电子工程研究所 | Millimeter wave omnidirectional circularly polarized antenna based on circularly polarized loudspeaker |
| CN106785426A (en) * | 2016-07-26 | 2017-05-31 | 深圳市鼎耀科技有限公司 | Broad beam millimeter wave circular polarized antenna |
| CN106785426B (en) * | 2016-07-26 | 2024-01-30 | 深圳市鼎耀科技有限公司 | Wide wave beam millimeter wave circularly polarized antenna |
| CN107275803A (en) * | 2017-05-31 | 2017-10-20 | 西安华讯天基通信技术有限公司 | A kind of millimeter wave reflection from lens formula intelligent antenna equipment |
| CN107275803B (en) * | 2017-05-31 | 2021-06-15 | 西安华讯天基通信技术有限公司 | Millimeter wave lens reflection type intelligent antenna device |
| CN110637393A (en) * | 2017-06-05 | 2019-12-31 | 日立汽车***株式会社 | Antenna, array antenna, radar device and vehicle-mounted system |
| CN109818154A (en) * | 2017-11-21 | 2019-05-28 | 福特全球技术公司 | Motor vehicles with glass roof and with the aerial array being placed on glass roof |
| CN109818154B (en) * | 2017-11-21 | 2022-03-08 | 福特全球技术公司 | Motor vehicle with a roof pane and with an antenna array arranged on the roof pane |
| CN113126173A (en) * | 2019-12-30 | 2021-07-16 | 清华大学 | Passive security inspection equipment and receiving antenna unit thereof |
| EP4231042A1 (en) * | 2022-02-22 | 2023-08-23 | Infineon Technologies AG | Radar system, device comprising a radar system and method for operating a radar system |
| EP4231043A3 (en) * | 2022-02-22 | 2023-10-25 | Infineon Technologies AG | Radar system, device comprising a radar system and method for operating a radar system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20181226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |