CN201069457Y - Measurement testing device for antenna radiation feature - Google Patents
Measurement testing device for antenna radiation feature Download PDFInfo
- Publication number
- CN201069457Y CN201069457Y CNU2007201113996U CN200720111399U CN201069457Y CN 201069457 Y CN201069457 Y CN 201069457Y CN U2007201113996 U CNU2007201113996 U CN U2007201113996U CN 200720111399 U CN200720111399 U CN 200720111399U CN 201069457 Y CN201069457 Y CN 201069457Y
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- antenna
- metal grid
- grid mesh
- transmitting terminal
- supporter
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Abstract
The utility model discloses a test device for detecting the radiation characteristics of an antenna. The utility model is characterized in that: at the signal transmission terminal: an emitting assembly consists of a solid oscillation signal source, a first wave guide, a microwave attenuator, a second wave guide and an emitting horn antenna, and is arranged on a radio bench; the radio bench consists of an antenna supporter adapted to rotate the emitting assembly, a vertical rotation bench with a locking handle and an angle scale panel, and a horizontal rotation bench, and is arranged on the top of a signal transmission terminal supporter; the supporter is also provided thereon with a supporter with a metal mesh which is positioned in front of the emitting horn antenna; and the bottom of the supporter is arranged on a movable antenna frame; at the signal reception terminal: a reception assembly consists of a reception horn antenna with a port opposite to the signal transmission terminal, a third wave guide, a microwave crystal detector, a fourth wave guide and a short-circuiting piston, and is arranged on the top of a signal reception terminal supporter; and the bottom of the supporter is arranged on the movable antenna frame. The device can detect the relationship between the intensity and distance of electromagnetic wave, the Polarization property and the radial direction of horn antenna during the space propagation of electromagnetic waves.
Description
Technical field
The utility model relates to the measurement mechanism of electromagnetic reflection, radiation, orientation, especially relates to a kind of aerial radiation feature measurement experimental provision.
Background technology
Electromagnetic wave is aloft propagated by aerial radiation.Its intensity of electromagnetic wave of launching by antenna is certain distribution in the space, difform antenna, the electromagnetic wave of emission have different distributions in the space, therefore has different antenna performances.The parameter of describing antenna performance is a lot, mainly contains: antenna directivity, antenna pattern, beam angle, sidelobe level, frequency response, input reflection coefficient or the like.In addition, the electromagnetic wave of antenna emission all has polarization characteristic, and so-called polarization is meant the direction of electromagnetic wave electric field intensity.Electromagnetic wave signal size that receiving antenna receives and distance dependent apart from emitting antenna, also relevant, also relevant with the polarization of electromagnetic wave characteristic with the characteristic of emitting antenna.When if the polarised direction of emitting antenna institute launching electromagnetic wave is consistent with the polarised direction of receiving antenna, the received signal maximum, if both quadratures, receiver will not receive signal.Receiving antenna range transmission antenna is far away more, and the signal that receives is weak more.
Summary of the invention
The purpose of this utility model is to provide a kind of aerial radiation feature measurement experimental provision, is used to disclose the relation of antenna directivity, beam angle, wave polarization characteristic and the electromagnetic intensity and the propagation distance of electromagnetic horn.
The technical scheme that its technical matters that solves the utility model adopts is:
Signal transmitting terminal and signal receiving end are installed in the two ends of antenna movable stand respectively, and can move on the antenna movable stand and fixing; Wherein:
Described signal transmitting terminal: connect to form emitting module by solid-state source oscillation signal, first waveguide, microwave attenuator, second waveguide and emission electromagnetic horn successively, and be contained on the The Cloud Terrace; Described The Cloud Terrace is by allowing emitting module form around the vertical universal stage of antenna erecting frame, tight handle with lock and the angle dial of the band angle dial of waveguide axis rotation and the horizontal rotating table of tight handle with lock and angle dial; The Cloud Terrace is installed in signal transmitting terminal support upper end, the metal grid mesh support that can rotate also is installed on the signal transmitting terminal support, on the metal grid mesh support metal grid mesh is installed, metal grid mesh can be done 360 ° of rotations around the center of circle, and have 360 ° of angle dials, rotate the metal grid mesh support and can make metal grid mesh be positioned at the front of emission electromagnetic horn port, signal transmitting terminal support lower end is installed on the antenna movable stand, and can move on the antenna movable stand;
Described signal receiving end: form towards reception electromagnetic horn, the 3rd waveguide, microwave pyron detector, the 4th waveguide and the short-circuit plunger of signal transmitting terminal by port successively, be installed in signal receiving end support upper end, signal receiving end support lower end is installed on the antenna movable stand.
Spacing a between the metal grate of described metal grid mesh is 2～15 millimeters, and the diameter d of metal grid mesh is greater than the bore of emission electromagnetic horn port.
The beneficial effect that the utlity model has is:
This device can carry out that the relation of electromagnetic wave electromagnetic intensity and distance in spatial transmission is measured, polarization characteristic is measured, the electromagnetic horn antenna pattern is measured.Modulation power source that need to dispose a frequency during measurement be 1000Hz and the arrowband frequency-selecting amplifier of a centre frequency 1000Hz.
Description of drawings
Fig. 1 is an antenna performance experiments of measuring device.
Fig. 2 is the signal transmitting terminal.
Fig. 3 is a signal receiving end.
Fig. 4 is a metal grid mesh.
Among the figure: 1, signal transmitting terminal, 1.1, solid-state source oscillation signal, 1.2, waveguide, 1.3, microwave attenuator, 1.4, the antenna erecting frame, 1.5, the emission electromagnetic horn, 1.6, the vertical universal stage of tight handle with lock and angle dial, 1.7, the horizontal rotating table of tight handle with lock and angle dial, 1.8, metal grid mesh, 1.9, the metal grid mesh support, 1.10, signal transmitting terminal support; 2, antenna movable stand; 3, signal receiving end, 3.1, receive electromagnetic horn, 3.2, waveguide, 3.3, the microwave pyron detector, 3.4, short-circuit plunger, 3.5, the signal receiving end support.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, signal transmitting terminal 1 of the present utility model and signal receiving end 3 are installed in the two ends of antenna movable stand 2 respectively, and can move on antenna movable stand 2 and fixing; Wherein:
Described signal transmitting terminal 1: connect to form emitting module by solid-state source oscillation signal 1.1, first waveguide 1.2, microwave attenuator 1.3, second waveguide 1.2 and emission electromagnetic horn 1.5 successively, and be contained on the The Cloud Terrace; Described The Cloud Terrace is by allowing emitting module form around the vertical universal stage 1.6 of antenna erecting frame 1.4, tight handle with lock and the angle dial of the rotation of waveguide axis and the horizontal rotating table 1.7 of tight handle with lock and angle dial; The Cloud Terrace is installed in signal transmitting terminal support 1.10 upper ends, on the signal transmitting terminal support 1.10 metal grid mesh support 1.9 is installed also, metal grid mesh 1.8 is installed on the metal grid mesh support 1.9, rotating metal grid mesh support 1.9 can make metal grid mesh 1.8 be positioned at the front of emission electromagnetic horn 1.5 ports, metal grid mesh 1.8 has 360 ° of angle indexs, can (mounting points) do 360 ° of rotations around the center of circle, signal transmitting terminal support 1.10 lower ends are installed on the antenna movable stand 2, and can on antenna movable stand 2, move, make transmitting terminal along the translation of movable stand track, receive thereby change, send out the distance between the electromagnetic horn, its distance value can read from the rule on the movable stand 2.
Emitting module can be done 360 ° of rotations around the waveguide axis, can change the polarised direction of launching electromagnetic wave thus, and its polarization angle can be read from angle dial; The big or small available microwave attenuator of emissive power is regulated.The Cloud Terrace can be on vertical plane greater than on ± 50 ° and the surface level greater than rotation ± 95 ° of scopes in, be used to measure the directivity characteristic of emitting antenna, the angle of its rotation can be read from corresponding angle dial respectively.Metal grid mesh 1.8 can be done 360 ° of rotations around the center of circle.
Described signal receiving end 3: form towards reception electromagnetic horn 3.1, the 3rd waveguide 3.2, microwave pyron detector 3.3, the 4th waveguide 3.2 and the short-circuit plunger 3.4 of signal transmitting terminal by port successively, be installed in signal receiving end support 3.5 upper ends, signal receiving end support 3.5 lower ends are installed on the antenna movable stand 2.
Described metal grid mesh 1.8 has 360 ° of angle indexs, can rotate around centre point, and the spacing a between the metal grate is 2～15 millimeters, and the diameter d of metal grid mesh 1.8 is greater than the bore of emission electromagnetic horn 1.5 ports.
Embodiment 1: the relation of electromagnetic wave electromagnetic intensity and distance in spatial transmission is measured
Unscrew the clamping screw of antenna movable stand, movable signal transmitting terminal support, distance is 1.2m between adjusting emitting antenna and the reception, tightens clamping screw then and makes the transmitting terminal stationkeeping.
Rotating the metal grid mesh support makes metal grid mesh remove the emission electromagnetic horn.
The microwave pyron detector output of receiving end is received frequency-selecting amplifier by feeder line.
Is frequency that the modulation power source of 1000Hz is connected to solid-state source oscillation signal, produces the electromagnetic wave of 1000Hz modulation, and the solid-state oscillator signal source frequency here is 9.375GHz.
Experimental procedure:
(1) around waveguide axis rotation emitting module, the emitting antenna polarised direction is adjusted to consistent with the polarised direction of receiving antenna, i.e. same polarization mode.
(2) open solid-state oscillator signal source current (working method is a square-wave frequency modulation) and frequency-selecting amplifier power supply.Regulate microwave pyron detector allotment screw or short-circuit plunger position and make the detection output maximum (wave detector coupling) of indicating on the frequency-selecting amplifier, select " decibel " knob measurement range selection 40dB or the 50dB gear of frequency-selecting amplifier, and the microwave attenuator of adjusting transmitting terminal, make frequency-selecting amplifier output full scale, promptly normalization numerical value is 0dB.
(3) change distance between the sending and receiving antenna successively, the data recording of measuring in following table:
| Distance R (m) | Relative normalized power |
| 1.0 | |
| 1.1 | |
| 1.2 | |
| 1.3 | |
| 1.4 |
The power of receiving according to the data verification of measuring whether and the square distance between the sending and receiving antenna be inversely proportional to.
Embodiment 2: antenna polarization is measured
(1) unscrew the emitting antenna clamping screw, around waveguide axis rotation emitting module, the polarised direction of adjusting the emission electromagnetic horn and clamping screw after receiving antenna is consistent, the angle value that this moment, note polarized on the index dial is 0 ° of a relative value.
(2) unscrew the vertical and horizontal clamping screw of The Cloud Terrace successively, regulate the level and vertical sensing of emitting antenna, find frequency-selecting amplifier indication maximum position (promptly finding antenna radiation pattern maximal value this point) back clamping screw, the microwave attenuator of regulating transmitting terminal then makes frequency-selecting amplifier output full scale, and promptly normalization numerical value is 0dB relatively.
(3) successively around waveguide axis to rotation emission electromagnetic horn, from 0 ° to 90 °, every the reading of 10 ° of record frequency-selecting amplifiers indications in following table:
| Emission electromagnetic horn angle θ | Relative normalized power |
| 0° | |
| 10° | |
| 20° | |
| 30° | |
| 40° | |
| 50° | |
| 60° | |
| 70° | |
| 80° | |
| 90° |
Whether meet cos between the anglec of rotation θ of power that receives according to the data verification that measures and emission electromagnetic horn
2The relation of θ.
Embodiment 3: polarization characteristic is measured
The polarization aperture plate is to have opened a lot of lines of rabbet joint on a copper coin, if the width of bonding jumper is all much smaller than wavelength with the width of seam, then project electromagnetic wave on the fluting copper coin, having the electromagnetic wave that is parallel to line of rabbet joint direction for electric field will be by total reflection, and the electromagnetic wave that has perpendicular to line of rabbet joint direction can pass through smoothly.Make metal grid mesh just in time drop on the front of emitting antenna port so rotate the metal grid mesh support, then the received signal magnitude of receiving antenna changes along with the change of the polarization aperture plate anglec of rotation.
(1) around waveguide axis rotation emitting module, the polarised direction of adjusting the emission electromagnetic horn with lock after receiving antenna is consistent
Bolt, the angle value that promptly polarizes are 0 ° of position.
(2) metal grid mesh is moved to the front of transmitting terminal electromagnetic horn port, the rotating metallic aperture plate makes frequency-selecting amplifier reading maximum, the microwave attenuator of regulating transmitting terminal then makes frequency-selecting amplifier output full scale, and promptly normalization numerical value is 0dB relatively, and the angle on the note aperture plate is relative 0 °.
(3) rotate metal grid mesh successively,,, simultaneously 45 ° of points are also made one-shot measurement, write down the frequency-selecting amplifier reading respectively every 10 ° and make one-shot measurement from 0 °～90 °.
| Polarization aperture plate angle | Relative normalized power |
| 0° | |
| 10° | |
| 20° | |
| 30° | |
| 40° | |
| 45° | |
| 50° | |
| 60° | |
| 70° | |
| 80° | |
| 90° |
1. observe angle between the polarised direction of electromagnetic field and the metal grid mesh and change influence received power.
2. when between the polarised direction of electromagnetic field and the metal grid mesh during angle at 45, whether received power is-6dB.
3. when between the polarised direction of electromagnetic field and the metal grid mesh at an angle of 90 the time, whether received power is-∞ dB.
Embodiment 4: the electromagnetic horn antenna pattern is measured
Experiment is prepared:
Regulate the distance between transmitting terminal support and the receiving end support, making and receiving electromagnetic horn is 1.2m with the spacing of launching electromagnetic horn.
Metal grid mesh is removed.
Around waveguide axis rotation emitting module, adjust emission electromagnetic horn polarization angle, make consistent with the polarization angle that receives electromagnetic horn; " decibel " knob measurement range selection of frequency-selecting amplifier is at 40dB or 50dB gear;
Experimental procedure:
(1) unscrews and horizontally rotate locking knob in the The Cloud Terrace, the electromagnetic horn of rotation emission in the horizontal direction, locking knob when finding frequency-selecting amplifier indication maximum point position.Use the same method and on vertical plane, find frequency-selecting amplifier indication maximum point position, the microwave attenuator of regulating transmitting terminal then makes frequency-selecting amplifier output full scale (0dB), remembers that surface level is relative 0 ° with angular readings in the vertical plane high scale dish this moment respectively; Note frequency-selecting amplifier reading is the maximum point of antenna directivity characteristic, and promptly normalization numerical value is 0dB (because the directional diagram of antenna is a spatial structure, above step is in order to seek the maximum of points of directional diagram) relatively.
(2) unscrew and horizontally rotate locking knob in the The Cloud Terrace, the electromagnetic horn of rotation emission in the horizontal direction, by-90 ° forward to+90 °, select the frequency-selecting amplifier readings in table every 10 ° of records, and measure-beam angle during 3dB power.Then antenna is gone to 0 ° of position, locking horizontally rotates locking knob.
(3) with the directional diagram on the above-mentioned same method measuring vertical face, the record reading.
Antenna horizontal directivity pattern measurement data
| Antenna horizontal direction corner | -90 | -80 | -70 | -60 | -50 | -40 | -30 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Relative normalized power |
Antenna height pattern measurement data
| Antenna vertical direction corner | -50 | -40 | -30 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 |
| Relative normalized power |
1. draw the antenna pattern of emission electromagnetic horn on surface level, vertical plane with polar form respectively according to the data that measure.
2. measure respectively the emission electromagnetic horn on surface level, vertical plane-3dB powerbeam width.
3. calculate emission electromagnetic horn and the gain and the half-power beam width that receive electromagnetic horn according to antenna size, and compare, analyze its error with measured value.
Claims (2)
1. aerial radiation feature measurement experimental provision, it is characterized in that: signal transmitting terminal (1) and signal receiving end (3) are installed in the two ends of antenna movable stand (2) respectively, and can go up at antenna movable stand (2) and move and fixing; Wherein:
Described signal transmitting terminal (1): connect to form emitting module by solid-state source oscillation signal (1.1), first waveguide (1.2), microwave attenuator (1.3), second waveguide (1.2) and emission electromagnetic horn (1.5) successively, and be contained on the The Cloud Terrace; Described The Cloud Terrace is by allowing emitting module form around the vertical universal stage (1.6) of antenna erecting frame (1.4), tight handle with lock and the angle dial of the band angle dial of waveguide axis rotation and the horizontal rotating table (1.7) of tight handle with lock and angle dial; The Cloud Terrace is installed in signal transmitting terminal support (1.10) upper end, the metal grid mesh support (1.9) that can rotate also is installed on the signal transmitting terminal support (1.10), metal grid mesh (1.8) is installed on the metal grid mesh support (1.9), metal grid mesh (1.8) can be done 360 ° of rotations around the center of circle, and has 360 ° of angle dials; Rotate metal grid mesh support (1.9) and can make metal grid mesh (1.8) be positioned at the front of emission electromagnetic horn (1.5) port, signal transmitting terminal support (1.10) lower end is installed on the antenna movable stand (2), and can go up at antenna movable stand (2) and move;
Described signal receiving end (3): form towards reception electromagnetic horn (3.1), the 3rd waveguide (3.2), microwave pyron detector (3.3), the 4th waveguide (3.2) and the short-circuit plunger (3.4) of signal transmitting terminal by port successively, be installed in signal receiving end support (3.5) upper end, signal receiving end support (3.5) lower end is installed on the antenna movable stand (2).
2. a kind of aerial radiation feature measurement experimental provision according to claim 1, it is characterized in that: the spacing a between the metal grate of described metal grid mesh (1.8) is 2～15 millimeters, and the diameter d of metal grid mesh (1.8) is greater than the bore of emission electromagnetic horn (1.5) port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201113996U CN201069457Y (en) | 2007-06-27 | 2007-06-27 | Measurement testing device for antenna radiation feature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201113996U CN201069457Y (en) | 2007-06-27 | 2007-06-27 | Measurement testing device for antenna radiation feature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069457Y true CN201069457Y (en) | 2008-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201113996U Expired - Lifetime CN201069457Y (en) | 2007-06-27 | 2007-06-27 | Measurement testing device for antenna radiation feature |
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|---|---|
| CN (1) | CN201069457Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025431A (en) * | 2010-12-09 | 2011-04-20 | 广东通宇通讯股份有限公司 | Test method for uplink and downlink directional diagrams and gain of active antenna |
| CN109425789A (en) * | 2017-08-24 | 2019-03-05 | 中航贵州飞机有限责任公司 | A kind of aircraft airborne antenna measurement device |
| CN109565700A (en) * | 2016-08-16 | 2019-04-02 | 瑞典爱立信有限公司 | Control beam communication equipment |
| CN110082610A (en) * | 2019-04-26 | 2019-08-02 | 中国电子科技集团公司第五十四研究所 | A kind of method of measurement standard electromagnetic horn gain |
| CN110988499A (en) * | 2019-10-21 | 2020-04-10 | 武汉大学 | Antenna radiation characteristic obtaining method based on phase-free near field measurement |
| CN111243404A (en) * | 2020-01-19 | 2020-06-05 | 北京理工大学 | Polarization synthesis experiment teaching device and operation method |
| CN112840225A (en) * | 2018-10-12 | 2021-05-25 | 佩里森股份有限公司 | Antenna housing measuring system and method |
| CN114047387A (en) * | 2021-11-04 | 2022-02-15 | 中国电子科技集团公司第二十九研究所 | System and method for testing radiation direction of electronic radiation system |
-
2007
- 2007-06-27 CN CNU2007201113996U patent/CN201069457Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025431A (en) * | 2010-12-09 | 2011-04-20 | 广东通宇通讯股份有限公司 | Test method for uplink and downlink directional diagrams and gain of active antenna |
| CN109565700A (en) * | 2016-08-16 | 2019-04-02 | 瑞典爱立信有限公司 | Control beam communication equipment |
| CN109425789A (en) * | 2017-08-24 | 2019-03-05 | 中航贵州飞机有限责任公司 | A kind of aircraft airborne antenna measurement device |
| CN112840225A (en) * | 2018-10-12 | 2021-05-25 | 佩里森股份有限公司 | Antenna housing measuring system and method |
| CN110082610A (en) * | 2019-04-26 | 2019-08-02 | 中国电子科技集团公司第五十四研究所 | A kind of method of measurement standard electromagnetic horn gain |
| CN110082610B (en) * | 2019-04-26 | 2021-03-09 | 中国电子科技集团公司第五十四研究所 | Method for measuring standard horn antenna gain |
| CN110988499A (en) * | 2019-10-21 | 2020-04-10 | 武汉大学 | Antenna radiation characteristic obtaining method based on phase-free near field measurement |
| CN110988499B (en) * | 2019-10-21 | 2020-11-03 | 武汉大学 | Antenna radiation characteristic obtaining method based on phase-free near field measurement |
| CN111243404A (en) * | 2020-01-19 | 2020-06-05 | 北京理工大学 | Polarization synthesis experiment teaching device and operation method |
| CN114047387A (en) * | 2021-11-04 | 2022-02-15 | 中国电子科技集团公司第二十九研究所 | System and method for testing radiation direction of electronic radiation system |
| CN114047387B (en) * | 2021-11-04 | 2023-04-25 | 中国电子科技集团公司第二十九研究所 | System and method for testing radiation direction of electronic radiation system |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070627 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |