CN107681248B - Vehicle-mounted antenna - Google Patents
Vehicle-mounted antenna Download PDFInfo
- Publication number
- CN107681248B CN107681248B CN201710843969.9A CN201710843969A CN107681248B CN 107681248 B CN107681248 B CN 107681248B CN 201710843969 A CN201710843969 A CN 201710843969A CN 107681248 B CN107681248 B CN 107681248B
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- Prior art keywords
- arm
- rod
- oblique
- oblique arm
- inclined arm
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3216—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used where the road or rail vehicle is only used as transportation means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
Abstract
The invention discloses a vehicle-mounted antenna, which comprises an antenna shell arranged on the roof of a vehicle, wherein a single-polarity antenna is arranged in the antenna shell; the monopole antenna comprises a feed rod, and a feed plate is arranged at one end of the feed rod; the average gain in the test passband is 8.2dBi, the roll-off degree is very high at the edge of the passband, the out-of-band rejection exceeds 22dBi in a very wide stopband, and the method is suitable for vehicle-mounted antennas.
Description
Technical Field
The invention relates to a vehicle-mounted antenna.
Background
At present, with the development of the communication industry, mobile communication has become the most vigorous and promising industry, and great convenience is brought to the life of people. With the continuous increase of the number of mobile users and the increase of the requirements of the mobile users, the oscillator antenna is a direction which is perfected by people, the types of the antennas are various, and the difference of the electrical performance of each antenna is large due to different current flow directions of each antenna, so that the design of an oscillator unit with a wide stop band internal and external rejection rate and stable direction and stable communication performance is very important;
especially, the communication antenna applied to the vehicle-mounted antenna should have better communication performance.
Disclosure of Invention
The invention aims to overcome the defects and provide a vehicle-mounted antenna.
In order to achieve the purpose, the invention adopts the following specific scheme: a vehicle-mounted antenna comprises an antenna shell which is used for being installed on a vehicle roof, and a monopole antenna is arranged in the antenna shell.
The monopole antenna comprises a feed rod, and a feed board is arranged at one end of the feed rod.
The feed rod is L-shaped, and the feed rod further comprises radiating subunits which extend out from two sides of the longitudinal rod of the feed rod respectively; each radiating subunit comprises an extension rod, a first extension rod perpendicular to the extension rod is arranged at one end, far away from the feed rod, of the extension rod, a first inclined arm is connected to one end of the first extension rod, and the radiating subunit further comprises a second inclined arm parallel to the first inclined arm and a third inclined arm parallel to the second inclined arm; the included angle between the first oblique arm and the first expansion rod is 50-65 degrees; the first oblique arm is connected with the second oblique arm through a first connecting rod, and the second oblique arm is connected with the third oblique arm through a second connecting rod;
the fourth inclined arm is arranged at the other end of the first expansion rod, and the slope of the fourth inclined arm is opposite to that of the first inclined arm; the included angle between the fourth oblique arm and the first expansion rod is 50-65 degrees; the third inclined arm is parallel to the fourth inclined arm; the fourth oblique arm is connected with the fifth oblique arm through a third connecting rod, and the fifth oblique arm is connected with the sixth oblique arm through a fourth connecting rod;
the device also comprises a second expansion rod;
one end of the second expansion rod is connected with a seventh oblique arm, and the second expansion rod further comprises an eighth oblique arm parallel to the seventh oblique arm and a ninth oblique arm parallel to the eighth oblique arm; the included angle between the seventh oblique arm and the second expansion rod is 50-65 degrees; the seventh oblique arm is connected with the eighth oblique arm through a fifth connecting rod, and the eighth oblique arm is connected with the ninth oblique arm through a sixth connecting rod;
the second expansion rod is provided with a second expansion rod, and the slope of the second expansion rod is opposite to that of the first expansion rod; the included angle between the tenth oblique arm and the second expansion rod is 50-65 degrees; the first inclined arm is parallel to the second inclined arm; the tenth oblique arm is connected with the eleventh oblique arm through a seventh connecting rod, and the eleventh oblique arm is connected with the twelfth oblique arm through an eighth connecting rod;
and one end of the seventh oblique arm e7 close to the fourth oblique arm is connected with one end of the fourth oblique arm close to the seventh oblique arm through a central connecting rod.
Wherein, the length direction of the longitudinal rod of the feed pole is 30mm apart for two radiation subunits.
Wherein, a semicircular first isolation disc is arranged on one side of the first expansion rod close to the central connecting rod.
And a semicircular second isolation disc is further arranged on one side of the second expansion rod.
Wherein, except the central connecting rod, each connecting rod is in a vertical relation with the corresponding oblique arm.
The invention has the beneficial effects that: the average gain in the test passband is 8.2dBi, the roll-off degree is very high at the edge of the passband, the out-of-band rejection exceeds 22dBi in a very wide stopband, and the method is suitable for vehicle-mounted antennas.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a front view of the monopole antenna of the present invention;
fig. 3 is a perspective view of a monopole antenna of the present invention;
the reference numerals in fig. 1 to 3 illustrate:
a 1-antenna housing;
b 1-feed beam; b 2-panel feed;
c 1-extension rod; c 2-center link; d 1-first extension bar; d 2-second extension bar; e 1-first oblique arm; e 2-second oblique arm; e 3-third oblique arm; e 4-fourth oblique arm; e 5-fifth oblique arm; e 6-sixth oblique arm; e 7-seventh oblique arm; e 8-eighth oblique arm; e 9-ninth oblique arm; e 10-tenth oblique arm; e 11-eleventh arm; e 12-twelfth oblique arm; f 1-first link; f 2-second link; f 3-third link; f 4-fourth link; f 5-fifth link; f 6-sixth link; f 7-seventh link; f 8-eighth link; d 3-first separator disk; d 4-second separator disk.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 3, the vehicle-mounted antenna according to the embodiment includes an antenna housing a1 for being mounted on a vehicle roof, a monopole antenna is disposed in the antenna housing and includes a feed rod b1, and a feed plate b2 is disposed at one end of the feed rod b 1; the feed rod b1 is L-shaped, and the a2 further comprises radiating subunits which respectively extend out from two sides of the vertical rod of the feed rod b 1; each radiating subunit comprises an extension rod c1, a first extension rod d1 perpendicular to the extension rod c1 is arranged at one end, away from the feed rod b1, of the extension rod c1, a first inclined arm e1 is connected to one end of the first extension rod d1, a second inclined arm e2 parallel to the first inclined arm e1 and a third inclined arm e3 parallel to the second inclined arm e2 are further included; the included angle between the first oblique arm e1 and the first extension rod d1 is 50-65 degrees; the first oblique arm e1 and the second oblique arm e2 are connected through a first connecting rod f1, and the second oblique arm e2 and the third oblique arm e3 are connected through a second connecting rod f 2; the other end of the first extension rod d1 is provided with a fourth inclined arm e4, and the slope of the fourth inclined arm e4 is opposite to that of the first inclined arm e 1; the angle between the fourth oblique arm e4 and the first extension rod d1 is 50-65 degrees; a fifth inclined arm e5 parallel to the fourth inclined arm e4 and a sixth inclined arm e6 parallel to the fifth inclined arm e5 are further included; the fourth oblique arm e4 is connected with the fifth oblique arm e5 through a third connecting rod f3, and the fifth oblique arm e5 is connected with the sixth oblique arm e6 through a fourth connecting rod f 4; a second extension rod d 2; one end of the second extension rod d2 is connected with a seventh inclined arm e7, and further comprises an eighth inclined arm e8 parallel to the seventh inclined arm e7 and a ninth inclined arm e9 parallel to the eighth inclined arm e 8; the angle between the seventh oblique arm e7 and the second extension rod d2 is 50-65 degrees; the seventh oblique arm e7 and the eighth oblique arm e8 are connected through a fifth connecting rod f5, and the eighth oblique arm e8 and the ninth oblique arm e9 are connected through a sixth connecting rod f 6; the other end of the second extension rod d2 is provided with a tenth inclined arm e10, and the slope of the tenth inclined arm e10 is opposite to that of the seventh inclined arm e 7; the included angle between the tenth oblique arm e10 and the second extension rod d2 is 50-65 degrees; the device also comprises an eleventh oblique arm e11 parallel to the tenth oblique arm e10 and a twelfth oblique arm e12 parallel to the eleventh oblique arm e 11; the tenth oblique arm e10 and the eleventh oblique arm e11 are connected through a seventh connecting rod f7, and the eleventh oblique arm e11 and the twelfth oblique arm e12 are connected through an eighth connecting rod f 8; the end of the seventh inclined arm e7 close to the fourth inclined arm e4 is connected with the end of the fourth inclined arm e4 close to the seventh inclined arm e7 through a central link c 2. The antenna is designed by default according to actual design grounding, and in order to meet the radiation requirement of long-distance communication, the antenna is adjusted and modified for nearly thousands of times, the specific test result is that the simulation is consistent with the parameter standard of tested | S11|, the impedance bandwidth of 10-11dB is 28.5%, and the stopband | S11| is close to 0. The average gain in a test pass band is 8.2dBi, the roll-off degree is very high at the edge of the pass band, the out-of-band rejection in a very wide stop band exceeds 22dBi, and a good filtering effect is achieved in the range of 0-9 GHz, so that the high-frequency band-pass filter has strong electromagnetic field resistance; the efficiency of the antenna in the frequency band is as high as 95%. The maximum radiation direction is directly above the radiator, and the main polarization is more than 26dBi greater than the cross polarization. Wherein, the distance between the two radiating subunits in the length direction of the longitudinal rod of the feed rod b1 is 30 mm.
In the vehicle antenna according to this embodiment, a semicircular first isolation disc d3 is disposed on a side of the first extension rod d1 close to the central link c 2. Wherein, a semicircular second isolation disc d4 is further arranged at one side of the second extension rod d 2. Wherein, except the central connecting rod, each connecting rod is in a vertical relation with the corresponding oblique arm. By means of the arrangement, the effect is better and ideal through simulation.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (3)
1. An on-vehicle antenna, its characterized in that: the antenna comprises an antenna shell (a 1) for being mounted on a vehicle roof, wherein a monopole antenna is arranged in the antenna shell (a 1); the monopole antenna comprises a feed rod (b 1), a feed plate (b 2) is arranged at one end of the feed rod (b 1), the feed rod (b 1) is L-shaped, and the monopole antenna also comprises radiating subunits which respectively extend out from two sides of a longitudinal rod of the feed rod (b 1); each radiating subunit comprises an extension rod (c 1), a first extension rod (d 1) perpendicular to the extension rod (c 1) is arranged at one end, away from the feed rod (b 1), of the extension rod (c 1), a first inclined arm (e 1) is connected to one end of the first extension rod (d 1), a second inclined arm (e 2) parallel to the first inclined arm (e 1) and a third inclined arm (e 3) parallel to the second inclined arm (e 2) are further included; the first oblique arm (e 1) and the first extension rod (d 1) form an included angle of 50-65 degrees; the first oblique arm (e 1) and the second oblique arm (e 2) are connected through a first connecting rod (f 1), and the second oblique arm (e 2) and the third oblique arm (e 3) are connected through a second connecting rod (f 2);
the second expansion rod further comprises a fourth inclined arm (e 4) arranged at the other end of the first expansion rod (d 1), and the slope of the fourth inclined arm (e 4) is opposite to that of the first inclined arm (e 1); the angle between the fourth oblique arm (e 4) and the first extension rod (d 1) is 50-65 degrees; a fifth inclined arm (e 5) parallel to the fourth inclined arm (e 4) and a sixth inclined arm (e 6) parallel to the fifth inclined arm (e 5) are further included; the fourth oblique arm (e 4) and the fifth oblique arm (e 5) are connected through a third connecting rod (f 3), and the fifth oblique arm (e 5) and the sixth oblique arm (e 6) are connected through a fourth connecting rod (f 4);
a second extension rod (d 2);
one end of the second expansion rod (d 2) is connected with a seventh inclined arm (e 7), and the second expansion rod further comprises an eighth inclined arm (e 8) parallel to the seventh inclined arm (e 7) and a ninth inclined arm (e 9) parallel to the eighth inclined arm (e 8); the seventh inclined arm (e 7) and the second extension rod (d 2) form an included angle of 50-65 degrees; the seventh oblique arm (e 7) and the eighth oblique arm (e 8) are connected through a fifth connecting rod (f 5), and the eighth oblique arm (e 8) and the ninth oblique arm (e 9) are connected through a sixth connecting rod (f 6);
the second expansion rod further comprises a tenth inclined arm (e 10) arranged at the other end of the second expansion rod (d 2), and the slope of the tenth inclined arm (e 10) is opposite to that of the seventh inclined arm (e 7); the included angle between the tenth oblique arm (e 10) and the second extension rod (d 2) is 50-65 degrees; the device also comprises an eleventh oblique arm (e 11) parallel to the tenth oblique arm (e 10) and a twelfth oblique arm (e 12) parallel to the eleventh oblique arm (e 11); the tenth oblique arm (e 10) and the eleventh oblique arm (e 11) are connected through a seventh connecting rod (f 7), and the eleventh oblique arm (e 11) and the twelfth oblique arm (e 12) are connected through an eighth connecting rod (f 8);
one end of the seventh inclined arm (e 7) close to the fourth inclined arm (e 4) is connected with one end of the fourth inclined arm (e 4) close to the seventh inclined arm (e 7) through a central connecting rod (c 2).
2. A vehicle antenna according to claim 1, characterized in that: the two radiating subunits are spaced apart by 30mm in the length direction of the longitudinal rod of the feed rod (b 1).
3. A vehicle antenna according to claim 1, characterized in that: and a semicircular first isolation disc is arranged on one side of the first expansion rod (d 1) close to the central connecting rod (c 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710843969.9A CN107681248B (en) | 2017-09-19 | 2017-09-19 | Vehicle-mounted antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710843969.9A CN107681248B (en) | 2017-09-19 | 2017-09-19 | Vehicle-mounted antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107681248A CN107681248A (en) | 2018-02-09 |
| CN107681248B true CN107681248B (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710843969.9A Active CN107681248B (en) | 2017-09-19 | 2017-09-19 | Vehicle-mounted antenna |
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| Country | Link |
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| CN (1) | CN107681248B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003087029A (en) * | 2001-09-07 | 2003-03-20 | Mitsumi Electric Co Ltd | Monopole antenna |
| CN103165970A (en) * | 2011-12-19 | 2013-06-19 | 启碁科技股份有限公司 | Antenna device |
| CN104241845A (en) * | 2013-06-21 | 2014-12-24 | 莱尔德技术股份有限公司 | Multiband mimo vehicular antenna assemblies |
| CN204391251U (en) * | 2015-01-21 | 2015-06-10 | 象山星旗电器科技有限公司 | A kind of unipolarity element antenna being provided with increasing frequency aperture |
| CN106523283A (en) * | 2016-11-04 | 2017-03-22 | 史坚鹏 | Wind power generation windmill steering along with wind |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100115171A (en) * | 2009-04-17 | 2010-10-27 | 현대자동차주식회사 | Integrated antenna system for car and making method thereof |
-
2017
- 2017-09-19 CN CN201710843969.9A patent/CN107681248B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003087029A (en) * | 2001-09-07 | 2003-03-20 | Mitsumi Electric Co Ltd | Monopole antenna |
| CN103165970A (en) * | 2011-12-19 | 2013-06-19 | 启碁科技股份有限公司 | Antenna device |
| CN104241845A (en) * | 2013-06-21 | 2014-12-24 | 莱尔德技术股份有限公司 | Multiband mimo vehicular antenna assemblies |
| CN204391251U (en) * | 2015-01-21 | 2015-06-10 | 象山星旗电器科技有限公司 | A kind of unipolarity element antenna being provided with increasing frequency aperture |
| CN106523283A (en) * | 2016-11-04 | 2017-03-22 | 史坚鹏 | Wind power generation windmill steering along with wind |
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| CN107681248A (en) | 2018-02-09 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200403 Address after: 510623 room 705, No.8, Jinsui Road, Tianhe District, Guangzhou City, Guangdong Province Applicant after: GAOKE ANT Co.,Ltd. Address before: 523000 Guangdong province Dongguan Songshan Lake high tech Industrial Development Zone Technology Park building 11, floor 2, 201D Applicant before: DONGGUAN SONGYAN ZHIDA INDUSTRIAL DESIGN Co.,Ltd. |
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