CN103715495A - Dipole antenna receiving array - Google Patents
Dipole antenna receiving array Download PDFInfo
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- CN103715495A CN103715495A CN201310445978.4A CN201310445978A CN103715495A CN 103715495 A CN103715495 A CN 103715495A CN 201310445978 A CN201310445978 A CN 201310445978A CN 103715495 A CN103715495 A CN 103715495A
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Abstract
The invention relates to a radar receiving antenna, and in particular relates to a dipole antenna receiving array which is suitable for a meter wave band radar antenna feeder system. The dipole antenna receiving array provided by the invention comprises three pairs of dipole antennas, a three-in-one broadband matching network plate and a casing body. Three pairs of dipole antenna units are arranged on the outer side of the casing body in an equal angle manner. The three-in-one broadband matching network plate is fixed in the casing body. Each pair of dipole antennas is corresponding to a matching network. Three matching networks are integrated into a PCB, which has the advantages of convenient installation and stable structure. The phase consistency of the antenna units is satisfied. The dipole antenna receiving array provided by the invention has the advantages of simple antenna structure, light weight and easy integration, is applied to the meter wave receiving antenna, and can well meet a technical requirement in the bandwidth of 46%.
Description
Technical field
The present invention relates to radar receiving antenna, particularly a kind of wide band omnidirectional antenna, is applicable to meter wave band radar antenna feed system.
Background technology
At present, Metric wave aerial has been widely used on the equipment such as various radars, communication; Metric wave aerial is simple in structure, be easy to make, production cost compared with low, azimuth plane omnidirectional characteristic is good, coverage is large; Metric wave aerial has the advantages such as anti-interference, anti-stealthy.
But along with the development of Metric wave aerial, people are to Metric wave aerial miniaturization and broadband having higher requirement.Can the broadening beamwidth of antenna to antenna loading, can dwindle antenna size again.But the antenna feed impedance after loading is still very violent with frequency change, and this just need to design suitable matching network for loaded antenna.Suitable broadband matching network, further the broadening beamwidth of antenna, reduces voltage standing wave ratio.
Summary of the invention
For the deficiency of background technology, the invention provides a kind of omnidirectional antenna of meter wave band, by the appropriate design of dipole antenna unit structure and the optimization of matching network, solved existing omnidirectional antenna and had narrow bandwidth and the large problem of size.
Technical scheme of the present invention is: a kind of dipole antenna receives battle array, comprise three electrode couple sub antenna unit, three-in-one matching network and housing, three described electrode couple sub antenna unit are rotational symmetry structure, three electrode couple sub antenna unit become equal angles to be arranged on hull outside, three-in-one matching network is fixed in housing, three-in-one matching network is a pcb board, integrated three matching networks on it, it is characterized in that: described matching network comprises N Connector, impedance transformer, match circuit and wire, described match circuit is comprised of L-C network.
Dipole antenna as above receives battle array, it is characterized in that: described L-C network is comprised of the first capacitor C 1, the first inductance L 1 and L3, the second capacitor C 2, the second inductance L 2 and L4, the 3rd capacitor C 3.The first capacitor C 1, the first inductance L 1 and L3 form first order filtering; The second capacitor C 2, the second inductance L 2 and L4 form second level filtering; The 3rd capacitor C 3 is connected between two doublet units of symmetrical dipole, and the reaction component that loads dipole antenna unit input impedance is slowed down with frequency change.
Dipole antenna as above receives battle array, it is characterized in that: described impedance transformer is realized by the line transformer of 1 to 4 imbalance-balance.
Dipole antenna as above receives battle array, it is characterized in that: three described electrode couple sub antenna unit become equal angles to be arranged on hull outside, and three-in-one matching network plate is fixed in housing.
Dipole antenna as above receives battle array, it is characterized in that: described dipole antenna unit length is 1200mm to 1400mm, and diameter 18mm, antenna element is copper pipe, and near end portion, carries out capacitance-resistance loaded in series at copper pipe.
The invention has the beneficial effects as follows: antenna structure is simple, lightweight, omnidirectional antenna is horizontal polarization, and voltage standing wave ratio is less than 2, and in 46% bandwidth, antenna is well positioned to meet specification requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of antenna reception battle array of the present invention;
Fig. 2 is the wiring relation of antenna reception battle array;
Fig. 3 is three-in-one matching network wiring diagram;
Fig. 4 is loaded antenna schematic diagram;
Fig. 5 is single broadband matching network schematic diagram.
Embodiment
Description of reference numerals: 1-housing, 2-dipole antenna unit, 3-three-in-one matching network, 4-N Connector, 5-copper pipe, the 6-the first load plate, the 7-the second load plate, the 8-the three load plate, the 9-the four load plate, the 10-the slender acanthopanax support plate.
Below in conjunction with drawings and Examples, the present invention is further described.
It is 50MHz to 80MHz that dipole antenna of the present invention receives the applicable frequency range of battle array.As shown in Figure 1, a kind of dipole antenna reception battle array of the present invention comprises three electrode couple sub antenna unit 2, three-in-one matching network 3 and housing 1.Three electrode couple sub antenna unit 2 of the present invention are rotational symmetry structure, and three 2 one-tenth of unit of electrode couple sub antenna equal angles (120 degree) are arranged on housing 1 outside, and three-in-one matching network 3 is fixed in housing 1.Three-in-one matching network 3 is a pcb board, integrated three matching networks on it.The directional diagram of each electrode couple sub antenna unit 2 becomes splayed, covers 120 degree, three degree angle, 2 one-tenth 120 of electrode couple sub antenna unit group battle arrays, and Antenna Array Pattern covers 360 degree, reaches omnidirectional antenna requirement.
Housing 1 outside is dodecagon, and inner side is circle, hollow.Between two relative limits, distance is 300mm, by medium, is connected with dipole antenna unit 2.Housing 1 is arranged on frame high tower, and size is limited by tower structure.
As shown in Figure 2, antenna array wiring is closed and to be tied to form Rotational Symmetry mode, has guaranteed that each dipole antenna unit phase place one makes peace three pairs of symmetrical dipole phase centers in same point.
As shown in Figure 3, three-in-one matching network 3 is integrated by three matching networks, is external diameter 290mm, internal diameter 240mm, the annulus pcb board of thick 4mm.Matching network 3 is arranged in housing 1, and size is limited by housing 1.Three matching networks become 120 degree Rotational Symmetries.
The dielectric material that connects antenna element and N Connector 4 on housing 1 is polytetrafluoroethylene; Connecting housing 1 is polytetrafluoroethylene with the dielectric material of dipole antenna unit 2.Polytetrafluoroethylene has structural strength high, and cost is low, and high-low temperature resistant is effective, corrosion-resistant, salt fog, the features such as waterproof.
Dipole antenna unit 2 length ranges are 1200mm to 1400mm, are preferably 1290mm.If the long meeting of antenna is affected by moment, make under antenna curvedly, cause two oscillators of antenna not on same straight line; Antenna is too short reduces antenna gain, and antenna of the present invention is about quarter-wave, thereby antenna is had be greater than the gain of 2dB, and directional diagram covers and is greater than 120 degree.Error in length scope 2mm between antenna element; Diameter is 18mm, error range 0.05mm, and the interior input impedance of the larger band of diameter rises and falls less, is more beneficial to coupling; But diameter is larger, weight is heavier, can cause antenna element crooked, affects directional diagram, so need to consider correlative factor in actual design.
Dipole antenna unit 2 is copper pipe, and near end portion, carries out capacitance-resistance loaded in series at copper pipe, as shown in Figure 4.The present invention is divided into six section by five load plate by copper pipe in copper pipe end portion.The quantity of load plate is more, be more beneficial to coupling, but quantity is more, and antenna is longer, and antenna is easily lower curved.Structure, through overtesting, obtain, loading quantity is five the bests.
Five incision positions weld with pcb board, at center, copper pipe two ends fluting, and groove depth 10mm, the long 30mm of pcb board, by pcb board insertion groove, center-aligned.Pcb board width cans be compared to the wide 4mm of copper pipe diameter most, is beneficial to scolding tin and welds like this.
In the PCB load plate of the first load plate 6, the 3rd load plate 8, slender acanthopanax support plate 10, connect loading capacitance, in the PCB load plate of the second load plate 7, the 4th load plate 9, connect loading resistor.
As shown in Figure 1, each matching network is comprised of N Connector 4, impedance transformer, match circuit and wire.N Connector 4 is fixed on housing 1 by medium, and N Connector 4 one end are connected with the input of line transformer in matching network, another termination N-type cable assembly.Impedance transformer is realized by the line transformer of 1 to 4 imbalance-balance, and the effect of impedance transformer is that 50 Ω resistances of N Connector standard are transformed into the 200 Ω resistances that approach loaded antenna input impedance; Match circuit is comprised of shunt capacitance and series inductance.Wire matching connection network and dipole antenna unit 2, be 6, is divided into three parts: be integrated in the wire on pcb board, the wire that connects N Connector 4 and line transformer, pcb board to the wire between dipole antenna unit 2.The conductor length being integrated on pcb board is consistent, and on pcb board, positive and negative alternate distributes, and reduces mutual coupling, guarantees phase equalization.The six conductors length that connects N Connector 4 and line transformer is consistent, guarantees uneven---balanced transformation and phase equalization.Pcb board is consistent to the six conductors length between dipole antenna unit 2, guarantees phase equalization.
As shown in Figure 5, match circuit is comprised of L-C network, does not introduce resistance, and reason is that resistance can absorb energy antenna efficiency is reduced.L-C network is comprised of the first capacitor C 1, the first inductance L 1 and L3, the second capacitor C 2, the second inductance L 2 and L4, the 3rd capacitor C 3.The first capacitor C 1, the first inductance L 1 and L3 form first order filtering; The second capacitor C 2, the second inductance L 2 and L4 form second level filtering; The 3rd capacitor C 3 is connected between two doublet units of symmetrical dipole, makes to load dipole antenna unit reactance and slows down with frequency change.
Claims (5)
1. a dipole antenna receives battle array, comprise three electrode couple sub antenna unit, three-in-one matching network and housing, three described electrode couple sub antenna unit are rotational symmetry structure, three electrode couple sub antenna unit become equal angles to be arranged on hull outside, three-in-one matching network is fixed in housing, three-in-one matching network is a pcb board, integrated three matching networks on it, it is characterized in that: described matching network comprises N Connector, impedance transformer, match circuit and wire, described match circuit is comprised of L-C network.
2. dipole antenna as claimed in claim 1 receives battle array, it is characterized in that: described L-C network is comprised of the first capacitor C 1, the first inductance L 1 and L3, the second capacitor C 2, the second inductance L 2 and L4, the 3rd capacitor C 3, the first capacitor C 1, the first inductance L 1 and L3 form first order filtering; The second capacitor C 2, the second inductance L 2 and L4 form second level filtering; The 3rd capacitor C 3 is connected between two doublet units of symmetrical dipole, and the reaction component that loads dipole antenna unit input impedance is slowed down with frequency change.
3. dipole antenna as claimed in claim 1 receives battle array, it is characterized in that: described impedance transformer is realized by the line transformer of 1 to 4 imbalance-balance.
4. dipole antenna as claimed in claim 1 receives battle array, it is characterized in that: three described electrode couple sub antenna unit become equal angles to be arranged on hull outside, and three-in-one matching network plate is fixed in housing.
5. the dipole antenna of any as described in claim 1 to 4 receives battle array, it is characterized in that: described dipole antenna unit length is 1200mm to 1400mm, diameter 18mm, antenna element is copper pipe, and near end portion, carries out capacitance-resistance loaded in series at copper pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445978.4A CN103715495B (en) | 2013-09-27 | 2013-09-27 | A kind of dipole antenna receives battle array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445978.4A CN103715495B (en) | 2013-09-27 | 2013-09-27 | A kind of dipole antenna receives battle array |
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| Publication Number | Publication Date |
|---|---|
| CN103715495A true CN103715495A (en) | 2014-04-09 |
| CN103715495B CN103715495B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310445978.4A Expired - Fee Related CN103715495B (en) | 2013-09-27 | 2013-09-27 | A kind of dipole antenna receives battle array |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208754A (en) * | 2019-04-26 | 2019-09-06 | 四川九洲防控科技有限责任公司 | Rotating field formula omnidirectional antenna, omnidirectional's acquisition radar system and signal processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315264A (en) * | 1978-03-10 | 1982-02-09 | Duhamel Raymond H | Circularly polarized antenna with circular arrays of slanted dipoles mounted around a conductive mast |
| CN101682116A (en) * | 2007-04-03 | 2010-03-24 | Tdk股份有限公司 | Dipole antenna with improved performance in the low frequency range |
| CN102403567A (en) * | 2010-09-14 | 2012-04-04 | 旭丽电子(广州)有限公司 | Multi-antenna system and electronic device provided with same |
-
2013
- 2013-09-27 CN CN201310445978.4A patent/CN103715495B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4315264A (en) * | 1978-03-10 | 1982-02-09 | Duhamel Raymond H | Circularly polarized antenna with circular arrays of slanted dipoles mounted around a conductive mast |
| CN101682116A (en) * | 2007-04-03 | 2010-03-24 | Tdk股份有限公司 | Dipole antenna with improved performance in the low frequency range |
| CN102403567A (en) * | 2010-09-14 | 2012-04-04 | 旭丽电子(广州)有限公司 | Multi-antenna system and electronic device provided with same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208754A (en) * | 2019-04-26 | 2019-09-06 | 四川九洲防控科技有限责任公司 | Rotating field formula omnidirectional antenna, omnidirectional's acquisition radar system and signal processing method |
| CN110208754B (en) * | 2019-04-26 | 2024-03-26 | 四川九洲防控科技有限责任公司 | Rotary field type omni-directional antenna, omni-directional detection radar system and signal processing method |
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| Publication number | Publication date |
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| CN103715495B (en) | 2016-04-06 |
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