CN207967322U - A kind of high-gain omni-directional antenna - Google Patents
A kind of high-gain omni-directional antenna Download PDFInfo
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- CN207967322U CN207967322U CN201820462107.1U CN201820462107U CN207967322U CN 207967322 U CN207967322 U CN 207967322U CN 201820462107 U CN201820462107 U CN 201820462107U CN 207967322 U CN207967322 U CN 207967322U
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Abstract
The utility model discloses a kind of high-gain omni-directional antennas, it is related to the multipoint location system technical field to airborne aircraft, including mutiple antennas, low-noise amplifier and combiner, the output of mutiple antennas is combined by combiner again after low-noise amplifier amplifies so that entire spatial domain is covered after the Beam synthesis of mutiple antennas.The utility model realizes the unification that high-gain receives and wide spatial domain covers, effectively increases the operating distance of system by synthesizing the output of multiple gain directional antennas；Device can be such that receiving station's operating distance is promoted at double, and the coverage area of single receiving station greatly increases.
Description
Technical field
The utility model is related to the multipoint location system technical fields to airborne aircraft, more particularly to a kind of high-gain
Omnidirectional antenna.
Background technology
It is opened as China constantly pushes ahead low latitude, General Aviation, unmanned plane and air transportation obtain fast-developing, sky
Middle traffic density is increasing, and the contradiction of demand of the high density air traffic to spatial domain and available spatial domain inadequate resource is increasingly
Prominent, there is an urgent need to improve the operational efficiency of the capacity in spatial domain and aircraft.Multipoint location system is abbreviated as MLAT, using more
A receiving station receives the secondary surveillance radar answering machine transmitting signal carried on target aircraft simultaneously, and is arrived by measuring signal
The positioning to target aircraft and identification are completed up to the time difference of each receiving station.The position error of MLAT is small, recognition capability is strong,
Data transfer rate is high, can provide high-precision, high covering, the air route of High Data Rate, terminal area and airport scene monitoring service, meet
The demand of air traffic services target surveillance under the high density magnitude of traffic flow improves airspace capacity and aircraft operational efficiency, really
Protect air transportation safety.
In for the wide area multipoint location system to air route and terminal area monitoring, due to needing to receive hundred kilometers or more
The faint answer signal of distant object transmitting, it is therefore desirable to which multipoint location system receiving station has higher sensitivity.It improves
Receiving antenna gain is to improve an effective way of sensitivity, but wanted to the general technology of multipoint location system according to civil aviaton
It asks, receiving station's antenna bearingt direction must be 360 degree of coverings, and wide spatial domain covering and high-gain are a pair of for individual antenna
Contradictory problems, how to take into account the two is the important problem that multipoint location system receiving station Antenna Design faces.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of high-gain omni-directional antenna.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of high-gain omni-directional antenna, including mutiple antennas, low-noise amplifier and combiner, the output warp of mutiple antennas
It is combined again by combiner after crossing low-noise amplifier amplification so that entire spatial domain is covered after the Beam synthesis of mutiple antennas.It
The quantity of line is no less than 2.
Preferably, the antenna is orientation high-gain aerial.
Preferably, it is distributed by 5dB overlap modes between the main beam of the antenna.
The beneficial effects of the utility model are：The utility model is by closing the output of multiple gain directional antennas
At realizing high-gain and receive and the unification of wide spatial domain covering, effectively increase the operating distance of system；Device can make receiving station
Operating distance is promoted at double, and the coverage area of single receiving station greatly increases.
Description of the drawings
Fig. 1 is the operation principle schematic diagram of the utility model；
Fig. 2 is the beam pattern of the utility model.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
Embodiment one
As shown in Figure 1, including mutiple antennas, low-noise amplifier and combiner, antenna is orientation high-gain aerial, this reality
The quantity for applying antenna in example is 4, and the output of 4 antennas is combined by combiner again after low-noise amplifier amplifies, and is made
Entire spatial domain is covered after obtaining the Beam synthesis of 4 antennas.Since combiner has larger insertion loss, it can reduce and receive signal
Signal-to-noise ratio, therefore before combining, need addition low-noise amplifier to amplify signal in advance, compensate the insertion of combiner
Loss, it is ensured that the sensitivity of system is not deteriorated.
In order to ensure that it is smaller that the antenna radiation pattern main lobe fractionated gain after synthesis rises and falls, we use the main wave of each antenna
The beam position of each antenna is arranged in overlapping 5dB mode between beam.As shown in Fig. 2, the respective azimuth direction day of 4 antennas
Azimuth direction antenna radiation pattern simulation result after line directional diagram and synthesis, wherein the 5dB beam angles of each antenna are
18 °, the 3dB beam angles after synthesis are 72 °, and it is 1.5dB that the main beam internal gain after synthesis, which rises and falls, meets requirement.
Embodiment two
The receiving station of multipoint location system is operated in 1090MHz, and receiving station receives secondary radar answering machine hair on aircraft
The answer signal penetrated, measuring signal arrival time simultaneously report to central station.As shown in Figure 1, antenna is using 8 orientation high-gain days
Line is synthesized, and each antenna bearingt direction 5dB beam angles are 45 °, and gain 12dB, the directional diagram after synthesis realizes
Omnidirectional on azimuth direction receives, and the ratio of gains improves 9dB using single isotropic receiving antenna, and operating distance is single omnidirectional
2.8 times of antenna, coverage area are 8 times of single omnidirectional antenna.
The utility model forms one in the azimuth direction entirely by synthesizing multiple orientation high-gain aerials on radio frequency
The antenna system received to high-gain.The antenna system is used for civil aviaton's multipoint location system, can effectively improve the spirit of receiving station
Sensitivity expands the operating distance and coverage area of receiving station.
It these are only the preferred embodiment of the utility model, it does not limit the scope of the patent of the present invention.Ability
The those of ordinary skill in domain is appreciated that in the case where not departing from the principles of the present invention and objective can be to these implementations
Mode carries out a variety of variations, modification, replaces and deform.The scope of the utility model is limited by claim and its equivalent.
Claims (3)
1. a kind of high-gain omni-directional antenna, it is characterised in that：Including mutiple antennas, low-noise amplifier and combiner, Duo Getian
The output of line is combined by combiner again after low-noise amplifier amplifies so that is covered after the Beam synthesis of mutiple antennas whole
A spatial domain.
2. a kind of high-gain omni-directional antenna according to claim 1, it is characterised in that：The antenna is orientation high-gain day
Line.
3. a kind of high-gain omni-directional antenna according to claim 1 or 2, it is characterised in that：The main beam of the antenna it
Between be distributed by 5dB overlap modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462107.1U CN207967322U (en) | 2018-04-03 | 2018-04-03 | A kind of high-gain omni-directional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462107.1U CN207967322U (en) | 2018-04-03 | 2018-04-03 | A kind of high-gain omni-directional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207967322U true CN207967322U (en) | 2018-10-12 |
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ID=63726965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820462107.1U Active CN207967322U (en) | 2018-04-03 | 2018-04-03 | A kind of high-gain omni-directional antenna |
Country Status (1)
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| CN (1) | CN207967322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448259A (en) * | 2018-04-03 | 2018-08-24 | 芜湖泰贺知信息系统有限公司 | A kind of high-gain omni-directional antenna |
-
2018
- 2018-04-03 CN CN201820462107.1U patent/CN207967322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448259A (en) * | 2018-04-03 | 2018-08-24 | 芜湖泰贺知信息系统有限公司 | A kind of high-gain omni-directional antenna |
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