CN202957343U - All sides vertical polarization frequency modulation transmitting antenna - Google Patents
All sides vertical polarization frequency modulation transmitting antenna Download PDFInfo
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- CN202957343U CN202957343U CN 201220514880 CN201220514880U CN202957343U CN 202957343 U CN202957343 U CN 202957343U CN 201220514880 CN201220514880 CN 201220514880 CN 201220514880 U CN201220514880 U CN 201220514880U CN 202957343 U CN202957343 U CN 202957343U
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Abstract
The utility model provides an all sides vertical polarization frequency modulation transmitting antenna which enables the power capacity of a frequency modulation transmitting antenna to be improved and the polarization loss to be reduced simultaneously. The all sides vertical polarization frequency modulation transmitting antenna comprises at least one antenna unit, and each antenna unit comprises four oscillators and four reflecting plates; the reflecting plates are arranged around a launching tower, and the oscillators are perpendicular to the ground in the east, south, west and north directions and are spaced with the reflecting plates. The frequency modulation transmitting antenna provided by the utility model has a larger power capacity, and avoids the polarization loss via the vertical polarization transmission.
Description
Technical field
The utility model relates to a kind of antenna, particularly relates to a kind of four sides perpendicular polarization FM transmission antenna.
Background technology
At present, most of FM receiver all adopts telescopic antenna, and telescopic antenna is generally perpendicular to ground and uses, and level receives very inconvenient.Most of audiences are by the vehicle-mounted radio broadcast listening, and the telescopic antenna of car receiver also approaches vertically, will have polarization loss if remove to receive the horizontally-polarized electromagnetic wave that horizontally-polarized antenna sends with vertical reception antenna like this.Equally, also can there be polarization loss in receiver when reception horizontal polarization frequency modulation transmits.
At present, high-power frequency emission transmitting antenna generally adopts the horizontal polarization dipole antenna.The polarization mode of horizontal polarization dipole antenna is horizontal polarization, therefore has above-mentioned polarization loss.And, the problem that above-mentioned horizontal polarization dipole antenna exists oscillator mutually to crosstalk in the horizontal direction.
The utility model content
The utility model provides a kind of four sides perpendicular polarization FM transmission antenna, can reduce polarization loss when improving the FM transmission antenna power capacity.
In order to address the above problem, the utility model discloses a kind of four sides perpendicular polarization FM transmission antenna, comprise at least one antenna element, each antenna element comprises: four oscillators and four reflecting plates; Described reflecting plate is installed in the four sides of launching tower, and described oscillator Fen Dong, south, west, north four direction are placed perpendicular to ground and with the reflecting plate interval.
Preferably, each oscillator links to each other with power divider on the launching tower by branch feeder cable.
Preferably, the branch feeder cable length of each oscillator increases or reduces quarter-wave successively.
Preferably, each reflecting plate is comprised of tubular metal, and described tubular metal vertically is arranged in paliform, and leaves the space between the described tubular metal.
Preferably, the space between the described tubular metal is 10 centimetres.
Preferably, each oscillator is that quarter-wave grows to 1/2nd wavelength with the distance of corresponding reflecting plate.
Preferably, when described antenna element was a plurality of, a plurality of antenna elements were arranged from bottom to top, and each antenna element is one deck.
Preferably, described a plurality of antenna element is two to four.
Preferably, the electromagnetic phase place sent of the oscillator on four direction increasing or decreasing 90 degree successively.
Preferably, described launching tower is steel tower.
Compared with prior art, the utility model comprises following advantage:
The four sides perpendicular polarization FM transmission antenna that the utility model provides comprises at least one antenna element, and each antenna element has four oscillators, has realized the combination of a plurality of oscillators, so that FM transmission antenna has larger power capacity.Secondly, the antenna that the utility model provides is the perpendicular polarization emission, has avoided the appearance of polarization loss.Again, each oscillator has the reflecting plate isolation in the FM transmission antenna described in the utility model, and it is less to influence each other between oscillator, is conducive to adjust the plane field pattern.The reflecting plate of last FM transmission antenna described in the utility model is comprised of tubular metal and is arranged in paliform, can reduce the resistance of wind.
Description of drawings
Fig. 1 is the structural representation of the described a kind of four sides of the utility model embodiment perpendicular polarization FM transmission antenna;
Fig. 2 is the schematic diagram that the described oscillator of the utility model embodiment links to each other with power divider by branch feeder cable.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The below describes with the two-layer perpendicular polarization FM transmission antenna in four sides, such as Fig. 1, is the structural representation of above-mentioned a kind of four sides perpendicular polarization FM transmission antenna, wherein 11 expression oscillators, 12 expression reflecting plates, 13 expression launching towers.Present embodiment comprises two antenna elements, and each antenna element specifically comprises: four oscillators and four reflecting plates; Particularly, the antenna element of ground floor comprises: oscillator 1111, oscillator 1112, oscillator 1113, oscillator 1114 and reflecting plate 1211, reflecting plate 1212, reflecting plate 1213, reflecting plate 1214, draw for convenient, schematically draw two oscillators 1111 and 1112 of ground floor among Fig. 1, schematically drawn two reflecting plates 1211 and 1212 of ground floor.The antenna element of the second layer comprises: oscillator 1121, oscillator 1122, oscillator 1123, oscillator 1124 and reflecting plate 1211, reflecting plate 1212, reflecting plate 1213, reflecting plate 1214, draw for convenient, schematically draw two oscillators 1121 and 1122 of the second layer among Fig. 1, schematically drawn two reflecting plates 1221 and 1222 of the second layer.
Reflecting plate described in the present embodiment is installed in the four sides of launching tower, and described oscillator Fen Dong, south, west, north four direction are placed perpendicular to ground and with the reflecting plate interval, the corresponding reflecting plate of oscillator.
Two antenna elements are arranged from bottom to top in the present embodiment, are called double-deck the placement.Each oscillator is installed in the one side with the launching tower of reflecting plate.Each reflecting plate is comprised of tubular metal in the present embodiment, and in order to reduce the resistance of wind, described tubular metal vertically is arranged in paliform, and leaves the space between the described tubular metal.In a kind of preferred embodiment of present embodiment, the space between the described tubular metal is 10 centimetres.If the space between the tubular metal is too small, the tubular metal number that certainly will need can increase, and can cause like this antenna quality overweight, is unfavorable for installing; If the space between the tubular metal is excessive, can affects reflecting effect, and can not play good buffer action.When concrete the installation, need to reserve less space between the described reflecting plate, the convenient installation.Reflecting plate described in the present embodiment in the FM transmission antenna has the effect that corresponding oscillator is isolated mutually, also can adjust the field pattern shape of horizontal plane simultaneously.
Each oscillator links to each other with power divider on the launching tower by branch feeder cable in the antenna element of FM transmission antenna described in the present embodiment.As shown in Figure 2,2011,2012,2013,2014 is branch feeder cable, and 202 is power divider.Need to prove, what the electromagnetic field of FM transmission antenna described in the present embodiment was selected is rotary electromagnetic field, the electromagnetic phase place that oscillator on the four direction sends is increasing or decreasing 90 degree successively, for example, can be divided into east, south, the west, the north four direction, the electromagnetic phase place that oscillator on the four direction of all directions sends can be followed successively by 0 degree, 90 degree, 180 degree, 270 degree, the length of the branch feeder cable on the four direction of all directions can be increased or reduces quarter-wave successively during implementation, for example, take the branch feeder cable 2014 on north as benchmark, branch feeder cable 2011 in the east is than the long quarter-wave of back side cable, branch feeder cable 2012 in the south is than long/one wavelength of east branch feeder cable, the branch feeder cable 2013 in west is than the long quarter-wave of branch feeder cable in the south;Can guarantee that like this external electromagnetic field that the oscillator on east, south, west, the north four direction produces is rotating magnetic field.
Need to prove, when specifically using, can selectively remove the at the most oscillator of three directions according to the actual geographic situation, keep the oscillator of the direction that needs the emphasis covering.
In a kind of preferred embodiment of present embodiment, described FM transmission antenna can comprise a plurality of antenna elements, and these antenna unit arranges from bottom to top, and each antenna element is called one deck.For example, can comprise that two antenna elements are called the double-deck perpendicular polarization FM transmission antenna in four sides; Can comprise that three layers of antenna element are called the three layers of perpendicular polarization FM transmission antenna in four sides; Also can comprise four layers of antenna element, be called the four layers of perpendicular polarization FM transmission antenna in four sides, if certainly comprise the FM transmission antenna more than an antenna element, can be called four sides multilayer perpendicular polarization FM transmission antenna.
Launching tower described in the present embodiment is steel tower.Be specifically as follows square steel tower, circular steel tower, present embodiment does not limit this.
More than to a kind of four sides provided by the utility model perpendicular polarization FM transmission antenna, be described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a four sides perpendicular polarization FM transmission antenna is characterized in that comprise at least one antenna element, each antenna element comprises: four oscillators and four reflecting plates; Described reflecting plate is installed in the four sides of launching tower, and described oscillator Fen Dong, south, west, north four direction are placed perpendicular to ground and with the reflecting plate interval.
2. FM transmission antenna according to claim 1 is characterized in that:
Each oscillator links to each other with power divider on the launching tower by branch feeder cable.
3. FM transmission antenna according to claim 2 is characterized in that:
The branch feeder cable length of each oscillator increases or reduces quarter-wave successively.
4. FM transmission antenna according to claim 1 is characterized in that:
Each reflecting plate is comprised of tubular metal, and described tubular metal vertically is arranged in paliform, and leaves the space between the described tubular metal.
5. FM transmission antenna according to claim 4 is characterized in that:
Space between the described tubular metal is 10 centimetres.
6. FM transmission antenna according to claim 1 is characterized in that:
Each oscillator is that quarter-wave grows to 1/2nd wavelength with the distance of corresponding reflecting plate.
7. FM transmission antenna according to claim 1 is characterized in that:
When described antenna element was a plurality of, a plurality of antenna elements were arranged from bottom to top, and each antenna element is one deck.
8. FM transmission antenna according to claim 7 is characterized in that:
Described a plurality of antenna element is two to four.
9. FM transmission antenna according to claim 1 is characterized in that:
The electromagnetic phase place that oscillator on the four direction sends is increasing or decreasing 90 degree successively.
10. FM transmission antenna according to claim 1 is characterized in that:
Described launching tower is steel tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514880 CN202957343U (en) | 2012-09-29 | 2012-09-29 | All sides vertical polarization frequency modulation transmitting antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514880 CN202957343U (en) | 2012-09-29 | 2012-09-29 | All sides vertical polarization frequency modulation transmitting antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957343U true CN202957343U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220514880 Expired - Fee Related CN202957343U (en) | 2012-09-29 | 2012-09-29 | All sides vertical polarization frequency modulation transmitting antenna |
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| Country | Link |
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| CN (1) | CN202957343U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048217A (en) * | 2019-04-17 | 2019-07-23 | 武汉拓宝科技股份有限公司 | A kind of multi-antenna array and arrangement design method for mimo system |
-
2012
- 2012-09-29 CN CN 201220514880 patent/CN202957343U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048217A (en) * | 2019-04-17 | 2019-07-23 | 武汉拓宝科技股份有限公司 | A kind of multi-antenna array and arrangement design method for mimo system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130529 Termination date: 20140929 |
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| EXPY | Termination of patent right or utility model |