CN107809000A - A kind of low axle of radiation field measurement micro-strip in the air compares circular polarized antenna - Google Patents
A kind of low axle of radiation field measurement micro-strip in the air compares circular polarized antenna Download PDFInfo
- Publication number
- CN107809000A CN107809000A CN201710936429.5A CN201710936429A CN107809000A CN 107809000 A CN107809000 A CN 107809000A CN 201710936429 A CN201710936429 A CN 201710936429A CN 107809000 A CN107809000 A CN 107809000A
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- Prior art keywords
- strip
- polarized antenna
- circular polarized
- radiation field
- low axle
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Classifications
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of low axle of radiation field measurement micro-strip in the air to compare circular polarized antenna, including medium substrate, medium substrate front-side etch has multiple centrosymmetric rounded groove units, rounded groove unit center is provided with unit center rectangular channel, unit center rectangular channel side is provided with a feed probes welding hole, and feed probes welding hole is using coaxial probe backwards to feed；Rotation mode array arranges multiple rounded groove units in sequence；The medium substrate back side, which is set, covers copper floor, covers copper floor and corresponds to groove is provided with rounded groove unit, and feed probes welding hole is arranged in groove.The low axle of the micro-strip improves circular polarisation purity than circular polarized antenna, realizes low axle ratio characteristic, suitable for the accurate measurement of aerial microwave radiation field.
Description
Technical field
The present invention relates to Microwave Measurement Technique field, and in particular to a kind of aerial radiation field measurement is with based on microstrip array
Low axle is than circular polarized antenna, microwave signal measurement when suitable for incoming wave signal being linear polarization and uncertain polarised direction.
Background technology
Microwave refers to that frequency grows the electromagnetic wave between 1m and 1mm in 300MHz to 300GHz, corresponding electric wave.Utilize day
Line is converted to the radiation signal received the guided wave on transmission line, is to assess the parameters such as incoming wave signal frequency, power, time domain
Important means.
During aerial microwave radiation field measurement, influenceed by high altitude wind, aerial test platform is difficult to keep such as terrestrial surface radiation
Stability during field measurement, measurement antenna can be made to produce the rotary oscillation of certain angle and swing both horizontally and vertically,
And if incoming wave signal is when being the unknown line polarization wave of polarised direction, according to conventional linear polarized antenna as measurement antenna, that
The swing of reception antenna can cause the polarization mismatch between dual-mode antenna, bring larger measurement error, reduce radiation field ginseng
The accuracy of number measurement.
Circular polarized antenna is had a wide range of applications in fields such as radar, satellite communication, remote measuring and controlling and electronic warfares, and it is compared
Linear polarized antenna has numerous advantages：The influence of cloud, rain can be reduced in radar application；Can be with satellite communication applications
Reduce polarization distortion caused by the Faraday rotation effect of ionosphere；In electronic countermeasure, the various lines of enemy can be scouted and disturbed
Polarization and the signal of elliptic polarization；The leakage of signal can be reduced in the application of the systems such as communication, remote sensing remote measurement；Go for
The reception of signal on the aerial platform for acutely swinging or rolling.The preferable axle of common circular polarized antenna is than index in 1dB~3dB
Left and right, the requirement of aerial radiation field high-acruracy survey can not be met.
The content of the invention
The invention provides a kind of low axle of radiation field measurement micro-strip in the air than circular polarized antenna, mainly solves aerial platform
Upper conventional linear polarization reception antenna is volatile with the problem of causing microwave radiation field measurement accuracy relatively low.The low axle of the micro-strip compares circular polarisation
Antenna improves circular polarisation purity, realizes low axle ratio characteristic, suitable for the accurate measurement of aerial microwave radiation field.
To achieve the above objectives, the technical scheme is that：
A kind of low axle of radiation field measurement micro-strip in the air compares circular polarized antenna, it is characterised in that including medium substrate, medium
Substrate front side is etched with multiple centrosymmetric slotted units, and slotted unit is provided centrally with unit center rectangular channel, in unit
Heart rectangular channel side is provided with a feed probes welding hole, and feed probes welding hole is using coaxial probe backwards to feed；It is multiple
Rotation mode array arranges slotted unit in sequence；The medium substrate back side, which is set, covers copper floor, and it is single to cover the corresponding fluting in copper floor
First place is provided with groove, and feed probes welding hole is arranged in groove.
Described medium substrate is micro-strip plate.
Described slotted unit material is to cover metal patch.
Rounded groove antenna element on described medium substrate is sequentially rotated by 90 °, each rounded groove by 2 × 2 arrangements
Antenna element is according to 90 ° of feeds of Continuous phase shifting.
Described coaxial probe uses SMA probes or N-type probe.
Described medium substrate is rectangular configuration, and positioning hole is provided with four angles of medium substrate.
Described slotted unit is shaped as circular, oval, trapezoidal or rectangle.
Compared with the prior art, the present invention has the beneficial effect that：
The present invention improves circular polarisation purity, realizes low axle ratio characteristic by carrying out a group battle array to micro-strip circular polarized antenna unit.
Array antenna unit number and arrangement mode are designed excellent according to the index request such as beam angle, antenna gain during aerial survety
Change.Array antenna unit is using order rotation phase shift feeding classification.The rotation of antenna element angle is mutually orthogonal in order to produce
Polarization field, cross-couplings between unit are reduced, increase standing wave bandwidth and axial ratio bandwidth.The rotation of current feed phase is to provide for producing
Phase delay required for circular polarisation.The low axle of this micro-strip passes through to element antenna form, number of unit, battle array than circular polarized antenna
The Parameters Optimal Designs such as row form, baseplate material, circular polarisation purity is improved, realize low axle ratio characteristic.Suitable for aerial microwave
The accurate measurement of radiation field.Specific advantage is as follows：
(1) standing-wave ratio is small.The micro-strip circular polarized antenna surveys the equal ＜ 1.5 of 9GHz~10GHz scope standing internal waves, and mismatch is anti-
Penetrate small, signal waveform is smaller by being distorted caused by mismatch.
(2) isolation is high.The isolation in the range of 9GHz~10GHz>20dB.
(3) wave beam is wider.About 23 ° of 1dB beam angles during micro-strip circular polarized antenna 9.7GHz, about 45 ° of 3dB beam angles,
Its wave beam is wider, meets the needs of aerial radiation field measurement.
(4) axle is than extremely low.The antenna axial ratio is close to 0dB, it is meant that if incoming wave signal is the unknown line pole of polarised direction
When changing ripple, even if rotating a circle, measured value is also basically unchanged, and measurement accuracy is higher.
Further, the low axle of micro-strip is rotated than circular polarized antenna using rounded groove antenna element by 2 × 2 arrangements, order
90 °, each unit is according to 90 ° of feeds of Continuous phase shifting.The low axle ratio characteristic of circular polarized antenna can be realized, it is pure to improve circular polarisation
Degree, realizes low axle ratio characteristic.Suitable for the accurate measurement of aerial microwave radiation field.
Brief description of the drawings
Fig. 1 is that circular microstrip slots the low axle of Unit 4 than circular polarized antenna side view；
Fig. 2 is that circular microstrip slots the low axle of Unit 4 than circular polarized antenna front view；
Fig. 3 is that circular microstrip slots the low axle of Unit 4 than circular polarized antenna dorsal view；
Fig. 4 is circular polarized antenna standing-wave ratio；
Fig. 5 is circular polarized antenna cell isolation degree；
Fig. 6 is circular polarized antenna directional diagram；
Fig. 7 is circular polarized antenna axle ratio；
In figure, 1 is medium substrate, and 2 be slotted unit (covering copper paster), and 3 be feed probes welding hole, and 4 be unit center
Rectangular channel, 5 be mounting-positioning holes, and 6 be to cover copper floor.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in FIG. 1 to 3, a kind of low axle of micro-strip of the aerial radiation field measurement of X-band is than circular polarized antenna structure,
4 antenna rounded groove units 2 (covering copper paster) are etched at the top of medium substrate 1 (micro-strip plate), the center of rounded groove unit 2 is set
Unit center rectangular channel 4 is put, feed probes welding hole 3 is opened in the side of unit center rectangular channel 4, using SMA probes backwards to feed.
As illustrated in fig. 1 and 2, the low axle of circular microstrip fluting Unit 4 compares circular polarized antenna.The antenna is mainly opened by 4 circles
Groove unit 2 (covering copper paster), medium substrate 1, cover the composition such as copper floor 6.4 rounded groove units 2 (covering copper paster) are according to suitable
Sequence is rotated by 90 ° mode and arranged, and each unit opens feed probes welding hole 3 in central rectangular 4 lateral locations of fluting, is visited using coaxial
Needle back is to feed.Rounded groove antenna element 2 is sequentially rotated by 90 °, each unit is according to 90 ° of feedbacks of Continuous phase shifting by 2 × 2 arrangements
Electricity.
Fig. 3 is that a kind of circular microstrip of aerial radiation field measurement slots the low axle of Unit 4 than circular polarized antenna dorsal view.My god
The line back side includes covering copper floor 6 and feed probes welding hole 3.
The general principle of the present invention：By carrying out a group battle array to micro-strip circular polarized antenna unit, circular polarisation purity is improved, is realized
Low axle ratio characteristic.
Array antenna unit number and arrangement mode enter according to the index request such as beam angle, antenna gain during aerial survety
Row design optimization.Usual number of unit is more, and antenna gain is higher, and beam angle is narrower.
Array antenna unit is using order rotation phase shift feeding classification.The rotation of antenna element angle is to produce mutually just
The polarization field of friendship, cross-couplings between unit are reduced, increase standing wave bandwidth and axial ratio bandwidth.The rotation of current feed phase is to provide for
Produce the phase delay required for circular polarisation.
The basic implementation steps of the present invention：
(1) dielectric material and design cell form are selected according to application band.
(2) according to the index selecting unit numbers such as the beam angle of aerial radiation field measurement requirement, gain and group formation formula.
(3) should be tried one's best between unit using order rotation phase shift feeding classification arrangement, to improve circular polarisation purity.
The low axle of this micro-strip passes through to element antenna form, number of unit, array format, baseplate material than circular polarized antenna
Deng Parameters Optimal Design, circular polarisation purity is improved, realizes low axle ratio characteristic.Suitable for the accurate survey of aerial microwave radiation field
Amount.
(1) standing-wave ratio is small.Commercial micro-strip circular polarized antenna common at present, refer to take into account axle ratio, beam angle etc.
Mark, micro-strip circular polarized antenna actual measurement 9GHz~10GHz scope standing internal wave of the standing-wave ratio typically in 1.5~2 or so, Fig. 4 are equal
＜ 1.5, mismatch reflection is small, and signal waveform is smaller by being distorted caused by mismatch.
(2) isolation is high.The rotation of antenna element angle produces mutually orthogonal polarization field, reduces cross-couplings between unit,
Improve cell isolation degree.Fig. 5 is the isolation of adjacent cells in antenna, the isolation in the range of 9GHz~10GHz>20dB.
(3) wave beam is wider.Usual array antenna unit number is more, and antenna gain is higher, and beam angle is narrower.As one
Antenna of the kind for aerial radiation field measurement, narrow beam angle can cause to aim at difficulty raising.Micro-strip circular polarized antenna
About 23 ° of 1dB beam angles during 9.7GHz, about 45 ° of 3dB beam angles, as shown in fig. 6, its wave beam is wider, meet aerial radiation field
The demand of measurement.
(4) axle is than extremely low.The common preferable axle of commercial circular polarized antenna in 1dB~3dB or so, can not meet than index
The requirement of aerial radiation field high-acruracy survey.Designed micro-strip circular polarized antenna, in 9.7GHz, gain is about 11.6dB,
Axle is than about 0.1dB, as shown in Figure 7.The antenna axial ratio is close to 0dB, it is meant that if incoming wave signal is that polarised direction is unknown
During line polarization wave, even if rotating a circle, measured value is also basically unchanged, and measurement accuracy is higher.
Moreover, it is noted that：(1) baseplate material selected by antenna, antenna element cover the surface treatment of copper and also needed
Consider the factors such as measured signal power, air environment humiture.(2) the low axle ratio characteristic of circular polarized antenna is realized, its is each
The amplitude and phase of unit feed are also required for higher precision.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and unrestricted, array element
Form is not limited to rounded groove formula, can also be the other shapes such as oval, trapezoidal, rectangle according to being actually needed, paster material is not
It is limited to cover copper, can also is that other metals, the feed probes such as aluminium be not limited to SMA probes according to being actually needed, according to is actually needed
Can also be other coaxial probes such as N-type.Although the present invention is described in detail with reference to embodiment, the common skill of this area
Art personnel should be appreciated that to modify or equivalent substitution to technical scheme, without departure from technical solution of the present invention
Spirit and scope, it all should cover among scope of the presently claimed invention.
Claims (7)
1. a kind of low axle of radiation field measurement micro-strip in the air compares circular polarized antenna, it is characterised in that including medium substrate (1), is situated between
Matter substrate (1) front-side etch has multiple centrosymmetric slotted units (2), and slotted unit (2) is provided centrally with unit center square
Shape groove (4), unit center rectangular channel (4) side are provided with a feed probes welding hole (3), and feed probes welding hole (3) is adopted
With coaxial probe backwards to feed；Rotation mode array arranges multiple slotted units (2) in sequence；Medium substrate (1) back side is set
Put and cover copper floor (6), cover corresponding slotted unit (2) place in copper floor (6) and be provided with groove, feed probes welding hole (3) is arranged on groove
It is interior.
2. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Described medium substrate (1) is micro-strip plate.
3. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Described slotted unit (2) material is to cover metal patch.
4. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Rounded groove antenna element (2) on described medium substrate (1) is sequentially rotated by 90 °, each rounded groove day by 2 × 2 arrangements
Line unit (2) is according to 90 ° of feeds of Continuous phase shifting.
5. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Described coaxial probe uses SMA probes or N-type probe.
6. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Described medium substrate (1) is rectangular configuration, and positioning hole (5) is provided with four angles of medium substrate (1).
7. a kind of low axle of radiation field measurement micro-strip in the air according to claim 1 compares circular polarized antenna, it is characterised in that
Described slotted unit (2) is shaped as circular, oval, trapezoidal or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710936429.5A CN107809000B (en) | 2017-10-10 | 2017-10-10 | Microstrip low axial ratio circularly polarized antenna for aerial radiation field measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710936429.5A CN107809000B (en) | 2017-10-10 | 2017-10-10 | Microstrip low axial ratio circularly polarized antenna for aerial radiation field measurement |
Publications (2)
| Publication Number | Publication Date |
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| CN107809000A true CN107809000A (en) | 2018-03-16 |
| CN107809000B CN107809000B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710936429.5A Active CN107809000B (en) | 2017-10-10 | 2017-10-10 | Microstrip low axial ratio circularly polarized antenna for aerial radiation field measurement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281772A (en) * | 2018-03-23 | 2018-07-13 | 南京软赫波誉电子科技有限公司 | A kind of circular polarised array antenna and feed method of non-regular layout |
| CN108879091A (en) * | 2018-06-07 | 2018-11-23 | 南京理工大学 | A kind of broadband circularly polarization microstrip array antenna |
| CN108899658A (en) * | 2018-06-07 | 2018-11-27 | 南京理工大学 | A kind of 35GHz small circularly-polarizedanti-metal micro-strip phased array antenna |
| CN109037937A (en) * | 2018-08-06 | 2018-12-18 | 北方工业大学 | Wide-beam circularly polarized antenna applied to satellite positioning |
| CN110752442A (en) * | 2019-10-16 | 2020-02-04 | 西安空间无线电技术研究所 | Wide-beam low-width-angle-to-axis-ratio circularly polarized antenna unit and radiation method thereof |
| CN111326852A (en) * | 2020-02-28 | 2020-06-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Low-profile two-dimensional wide-angle scanning circularly polarized phased array antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108281772A (en) * | 2018-03-23 | 2018-07-13 | 南京软赫波誉电子科技有限公司 | A kind of circular polarised array antenna and feed method of non-regular layout |
| CN108879091A (en) * | 2018-06-07 | 2018-11-23 | 南京理工大学 | A kind of broadband circularly polarization microstrip array antenna |
| CN108899658A (en) * | 2018-06-07 | 2018-11-27 | 南京理工大学 | A kind of 35GHz small circularly-polarizedanti-metal micro-strip phased array antenna |
| CN109037937A (en) * | 2018-08-06 | 2018-12-18 | 北方工业大学 | Wide-beam circularly polarized antenna applied to satellite positioning |
| CN110752442A (en) * | 2019-10-16 | 2020-02-04 | 西安空间无线电技术研究所 | Wide-beam low-width-angle-to-axis-ratio circularly polarized antenna unit and radiation method thereof |
| CN111326852A (en) * | 2020-02-28 | 2020-06-23 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Low-profile two-dimensional wide-angle scanning circularly polarized phased array antenna |
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| Publication number | Publication date |
|---|---|
| CN107809000B (en) | 2020-03-31 |
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Effective date of registration: 20211110 Address after: 471000 sub box F11, PO Box 086, Luoyang City, Henan Province Patentee after: 63660 unit of the Chinese people's Liberation Army Address before: 841700 sub box 150, P.O. Box 21, Urumqi, Xinjiang Uygur Autonomous Region Patentee before: 63653 unit of the Chinese people's Liberation Army |