CN105353230B - A kind of Frequency Sweeping Method and sweep-frequency measurement system based on diversity concept - Google Patents
A kind of Frequency Sweeping Method and sweep-frequency measurement system based on diversity concept Download PDFInfo
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- CN105353230B CN105353230B CN201510887677.6A CN201510887677A CN105353230B CN 105353230 B CN105353230 B CN 105353230B CN 201510887677 A CN201510887677 A CN 201510887677A CN 105353230 B CN105353230 B CN 105353230B
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Abstract
The present invention provides a kind of Frequency Sweeping Method and sweep-frequency measurement system based on diversity concept, the Frequency Sweeping Method include：Transmitting antenna receives at least swept-frequency signal all the way, and to swept-frequency signal described in space radiation；Tool is tested antenna there are two the multiport of mutually orthogonal receiving port and receives the swept-frequency signal, obtains main polarization signal and cross-polarized signals；Receiving device receives the main polarization signal, the cross-polarized signals；Processing unit obtains the rotational angle that the level of the main polarization signal, the level of the cross-polarized signals and the multiport are tested antenna, and is tested the rotational angle generation antenna radiation pattern of antenna according to the level of the main polarization signal, the level of cross-polarized signals and multiport and exports.
Description
Technical field
The present invention relates to antenna measurement system more particularly to a kind of Frequency Sweeping Method and frequency sweep surveys based on diversity concept
Amount system.
Background technology
Currently, antenna measurement system is usually there are two types of composition form, one is by synthesized source, transmitting antenna, tested
Compositions, the operation principles such as antenna, RF switch, single channel joint and spectrum analyzer are：Transmitting is passed through by synthesized source
Antenna emits specific single-frequency point sine wave signal into space, and tested antenna receives the set specific frequency signal of transmitting antenna transmitting
Afterwards, the input terminal of spectrum analysis is sent to through single channel joint after RF switch gates all the way, to realize to 360 ° of directions
The continuous Uninterrupted Sampling of electromagnetic wave signal in space.Since the working frequency range of communication antenna is usually wider, need to measure
Frequency point it is very much, therefore the measuring system set up using spectrum signal source is because measurement efficiency is low, usually only measure " it is high, in,
It is low " three frequency points, the measurement demand that antenna full frequency band uses, and the point-frequency measurement that above-mentioned spectrum signal source is set up cannot be met
System cannot the amplitude of measuring signal and the parameters such as phase simultaneously.
Another composition form of antenna measurement system be by：Two-port net point, transmitting antenna, tested antenna, radio frequency are opened
Compositions, the operation principles such as pass, single channel joint are：Single channel swept-frequency signal is exported by certain in two-port net point all the way, and is led to
Transmitting antenna is crossed to space radiation swept-frequency signal, tested antenna is by the signal received through list after RF switch gates all the way
Channel joint is sent to the another way input terminal of two-port net point, with realize in 360 ° of director spaces electromagnetic wave signal it is continuous
Uninterrupted Sampling.But the measurement efficiency of the antenna measurement system with the composition form is general, it is little to expand upgrading space,
Generally apply in antenna measurement now.
Invention content
In order to solve the above technical problems, the present invention provides a kind of Frequency Sweeping Methods based on diversity concept and frequency sweep to survey
Amount system.
One aspect of the present invention provides a kind of Frequency Sweeping Method based on diversity concept, the Frequency Sweeping Method packet
It includes：
Transmitting antenna receives at least swept-frequency signal all the way, and to swept-frequency signal described in space radiation；
Tool is tested antenna there are two the multiport of mutually orthogonal receiving port and receives the swept-frequency signal, obtains main polarization
Signal and cross-polarized signals；
Receiving device receives the main polarization signal, the cross-polarized signals；
Processing unit obtains the level of the main polarization signal, the level of the cross-polarized signals and the multiport
The rotational angle of tested antenna, and according to the level of the main polarization signal, the level of cross-polarized signals and multiport quilt
The rotational angle of observation line generates antenna radiation pattern and exports.
In one embodiment, the transmitting antenna is single port single polarization transmitting antenna, is believed to frequency sweep described in space radiation
Number include：
The single port single polarization transmitting antenna is to space radiation swept-frequency signal all the way.
In one embodiment, multiport is tested antenna and receives the swept-frequency signal, obtains main polarization signal and cross polarization
Signal, including：
A reception of antenna is tested with the emission port multiport disposed in parallel of the single port single polarization transmitting antenna
Port receives the swept-frequency signal, obtains main polarization signal；
The multiport of setting orthogonal with the emission port of single port single polarization transmitting antenna is tested the another of antenna and connects
Receiving end mouth receives the swept-frequency signal, obtains cross-polarized signals.
In one embodiment, the transmitting antenna is dual-port dual polarization transmitting antenna, is believed to frequency sweep described in space radiation
Number include：
The dual-port dual polarization transmitting antenna is to the mutually orthogonal swept-frequency signal of space radiation two-way.
In one embodiment, multiport is tested antenna and receives the swept-frequency signal, obtains main polarization signal and cross polarization
Signal, including：
The multiport is tested one of antenna receiving port and receives the dual-port dual polarization transmitting antenna radiation
The mutually orthogonal swept-frequency signal of two-way, obtain main polarization signal, all the way cross-polarized signals all the way；
Another receiving port that the multiport is tested antenna receives the dual-port dual polarization transmitting antenna radiation
The mutually orthogonal swept-frequency signal of two-way obtains main polarization signal, all the way cross-polarized signals all the way.
Another aspect of the present invention additionally provides a kind of sweep-frequency measurement system, and the sweep-frequency measurement system includes：It swears four ports
It measures Network Analyzer, transmitting antenna, multiport and is tested antenna, antenna measurement turntable and a processing unit；Wherein,
At least one output end of four port vector network analyzer is connect with the transmitting antenna, two input terminals
The multiport, which is connected, by the antenna measurement turntable equipped with binary channels radio frequency rotary joint is tested antenna；The multiport
Tested antenna is set on the antenna measurement turntable；The processing unit and four port vector network analyzer and described
Antenna measurement turntable is separately connected；
Four port vector network analyzer is by the transmitting antenna to space radiation at least swept-frequency signal all the way；
It includes two mutually orthogonal receiving ports that the multiport, which is tested antenna, is respectively used to receive the frequency sweep letter
Number, obtain main polarization signal and cross-polarized signals；
Four port vector network analyzer is for receiving the main polarization signal and cross-polarized signals；
The processing unit is for obtaining the level of the main polarization signal, the level of cross-polarized signals and the antenna
The rotational angle of measuring circurmarotate, and given birth to according to the level of the main polarization signal, the level of cross-polarized signals and rotational angle
At antenna radiation pattern and export.
In one embodiment, the transmitting antenna is single port single polarization transmitting antenna, four port vector network point
Analyzer is by the single port single polarization transmitting antenna to space radiation swept-frequency signal all the way.
In one embodiment, two mutually orthogonal receiving ports that the multiport is tested antenna are respectively+45 ° of receptions
Port and -45 ° of receiving ports.
In one embodiment, two mutually orthogonal receiving ports that the multiport is tested antenna are respectively vertical reception
Port and horizontal receiving port.
In one embodiment, the transmitting antenna is dual-port dual polarization transmitting antenna, four port vector network point
Analyzer is by the dual-port dual polarization transmitting antenna to the mutually orthogonal swept-frequency signal of space radiation two-way.
In one embodiment, two emission ports of the dual-port dual polarization transmitting antenna are respectively+45 ° of emission ports
And -45 ° of emission ports, and it is respectively+45 ° of receiving terminals that the multiport, which is tested two mutually orthogonal receiving ports of antenna,
Mouth and -45 ° of receiving ports.
In one embodiment, two emission ports of dual-port dual polarization transmitting antenna are respectively Vertical Launch port and water
Flat emission port, and the multiport be tested antenna two mutually orthogonal receiving ports be respectively vertical reception port and
Horizontal receiving port.
In one embodiment, ranging from 0 °~360 ° of the antenna measurement turntable rotational angle.
In one embodiment, the multiport is tested antenna and throws radio frequency converting switch and the bilateral by a double-pole eight
Road radio frequency rotary joint connection.
Tested antenna every revolution in point-frequency measurement system can only measure a frequency point, and frequency sweep provided by the invention is surveyed
The tested antenna every revolution of multiport in amount system can complete n, and (n depends on the frequency point setting of Network Analyzer, at least
101 frequency points) measurement, also solved while largely improving measurement efficiency spectrum signal source group lay foundations frequency survey
Amount system cannot simultaneously the intrinsic antenna measurement problem such as measuring amplitude and phase, improve the means and precision of measurement.And
And the present invention also has the advantages that high degree of automation, expansion upgrading space is big and applicable situation is wide.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow diagram of Frequency Sweeping Method of the embodiment of the present invention based on diversity concept；
Fig. 2 is the structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention A；
Fig. 3 is another structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention A；
Fig. 4 is the structural schematic diagram of another embodiment of the present invention sweep-frequency measurement system B；
Fig. 5 is another structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention B.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the flow diagram of Frequency Sweeping Method of the embodiment of the present invention based on diversity concept.As shown in Figure 1, this
The Frequency Sweeping Method based on diversity concept that invention provides includes the following steps：
Step 1, transmitting antenna receive at least swept-frequency signal all the way, and to the above-mentioned swept-frequency signal of space radiation.
Step 2, tool are tested antenna there are two the multiport of mutually orthogonal receiving port and receive the swept-frequency signal, obtain
Main polarization signal and cross-polarized signals.
Step 3, receiving device receive the main polarization signal, the cross-polarized signals.
Step 4, processing unit obtain the level of the main polarization signal, the level of the cross-polarized signals and described
Multiport is tested the rotational angle of antenna, and according to the level of the main polarization signal, the level of cross-polarized signals and more
The rotational angle that port is tested antenna generates antenna radiation pattern and exports.
Compared to point-frequency measurement method, the measurement efficiency of the Frequency Sweeping Method provided by the invention based on diversity concept is big
It is big to improve, solve the problems, such as point-frequency measurement method cannot the intrinsic antenna measurement such as measuring amplitude and phase simultaneously, improve
The means and precision of measurement.
In step 1, when transmitting antenna be single port single polarization transmitting antenna when, the single port single polarization transmitting antenna to
Space radiation swept-frequency signal all the way.
Normally, above-mentioned single port single polarization transmitting antenna radiates swept-frequency signal all the way to space in a manner of linear polarization.This
When, a receiving port of antenna is tested with the emission port multiport disposed in parallel of the single port single polarization transmitting antenna
(main polarization port, i.e., the identical port of polarizing with transmitting antenna) receives above-mentioned swept-frequency signal, obtains main polarization signal, and above-mentioned
The multiport of the orthogonal setting of emission port of single port single polarization transmitting antenna is tested another receiving port (cross polarization of antenna
Port, the i.e. port with transmitting antenna polarization orthogonal) above-mentioned swept-frequency signal is received, obtain cross-polarized signals.Receiving device from
Main polarization port obtains main polarization signal, and cross-polarized signals are obtained from cross polarization port.
In step 1, when transmitting antenna is dual-port dual polarization transmitting antenna, which connects
Two-way swept-frequency signal is received, and to the mutually orthogonal swept-frequency signal of space radiation two-way.
At this point, multiport, which is tested one of antenna receiving port, receives above-mentioned dual-port dual polarization transmitting antenna radiation
The mutually orthogonal swept-frequency signal of two-way, obtain main polarization signal, all the way cross-polarized signals all the way；
Another receiving port that multiport is tested antenna receives the two-way that above-mentioned dual-port dual polarization transmitting antenna radiates
Mutually orthogonal swept-frequency signal obtains main polarization signal, all the way cross-polarized signals all the way.Receiving device receives above-mentioned two simultaneously
The main polarization signal in road and two-way cross-polarized signals.
Fig. 2 is the structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention A.As shown in Fig. 2, sweep-frequency measurement system A packets
It includes：Four port vector network analyzers 1, transmitting antenna 2, multiport are tested antenna 3, antenna measurement turntable 4 and a processing unit
5。
At least one output end of four port vector network analyzers 1 is connect with transmitting antenna 2, to pass through transmitting antenna 2
To space radiation at least swept-frequency signal all the way.Fig. 2 illustrates only an output end and the transmitting of four port vector network analyzers 1
Antenna 2 connects, therefore can be by transmitting antenna 2 to space radiation swept-frequency signal all the way, but the present invention is not limited thereto.
It includes two mutually orthogonal receiving ports that multiport, which is tested antenna 3, is respectively used to receive what transmitting antenna 2 was sent out
Swept-frequency signal all the way obtains main polarization signal and cross-polarized signals.
Multiport is tested antenna 3 and is set on antenna measurement turntable 4, can be driven and rotate by antenna measurement turntable 4.Antenna is surveyed
It measures turntable 4 and is equipped with binary channels radio frequency rotary joint 6, two input terminals of four port vector network analyzers 1 are penetrated by binary channels
Frequency rotary joint 6 is tested antenna 3 with multiport and connect, for receiving above-mentioned main polarization signal and cross-polarized signals.
Processing unit 5 is separately connected with four port vector network analyzers 1 and antenna measurement turntable 4, above-mentioned for obtaining
The rotational angle of the level of main polarization signal, the level of cross-polarized signals and antenna measurement turntable 4, and according to above-mentioned main polarization
The level of signal, the level of cross-polarized signals and rotational angle generate antenna radiation pattern and export.
When it is implemented, while the tested antenna 3 of multiport is turned around by the driving rotation of antenna measurement turntable 4, four ports arrow
Amount Network Analyzer 1 is tested the polarization characteristic measurement data that antenna 3 receives co polar signal and cross-polarized signals from multiport,
To realize the performance detection for two receiving ports with different polarization characteristics for being tested antenna 3 to multiport simultaneously.
The measurement efficiency of sweep-frequency measurement system provided by the invention is twice of conventional one-channel sweep-frequency measurement system, is early
2 × n times of phase spectrum signal source point frequency measuring system, measurement efficiency is higher.Also, the tested antenna in point-frequency measurement system is every
A frequency point can only be measured by turning around, and the tested antenna every revolution in sweep-frequency measurement system provided by the invention can complete n
The measurement of a (n depends on the frequency point setting of Network Analyzer, at least 101 frequency points), while improving measurement efficiency also
Solve the problems, such as spectrum signal source set up point-frequency measurement system cannot simultaneously the intrinsic antenna measurement such as measuring amplitude and phase,
Improve the means and precision of measurement.In addition, the present invention also has high degree of automation, expands that upgrading space is big and applicable field
Close wide advantage.
In one embodiment, transmitting antenna 2 is single port single polarization transmitting antenna, and four port vector network analyzers 1 are logical
The single port single polarization transmitting antenna is crossed to space radiation swept-frequency signal all the way.
In one embodiment, when the emission port of above-mentioned single port single polarization transmitting antenna is+45 ° of emission ports, multiterminal
When two mutually orthogonal receiving ports of mouthful tested antenna 3 are respectively+45 ° of receiving ports and -45 ° of receiving ports ,+45 ° connect
The signal that receiving end mouth receives is main polarized signal, and the signal that -45 ° of receiving ports receive is cross-polarized signals.
Similarly, when the emission port of above-mentioned single port single polarization transmitting antenna is -45 ° of emission ports, multiport is by observation
When two mutually orthogonal receiving ports of line 3 are respectively+45 ° of receiving ports and -45 ° of receiving ports ,+45 ° of receiving ports connect
The signal received is cross-polarized signals, and the signal that -45 ° of receiving ports receive is main polarized signal.
In another embodiment, when the emission port of above-mentioned single port single polarization transmitting antenna be Vertical Launch port, it is more
When two mutually orthogonal receiving ports that port is tested antenna 3 are respectively vertical reception port and horizontal receiving port, vertically
The signal that receiving port receives is main polarized signal, and the signal that horizontal receiving port receives is cross-polarized signals.
Similarly, when the emission port of above-mentioned single port single polarization transmitting antenna is horizontal emission port, multiport is by observation
When two mutually orthogonal receiving ports of line 3 are respectively vertical reception port and horizontal receiving port, vertical reception port connects
The signal received is cross-polarized signals, and the signal that horizontal receiving port receives is main polarized signal.
In one embodiment, ranging from 0 °~360 ° of 4 rotational angle of antenna measurement turntable can drive multiport tested
Antenna 3 rotates within the scope of 0 °~360 °.
In one embodiment, multiport is tested antenna 3 and throws radio frequency converting switch 7 and binary channels radio frequency by a double-pole eight
Rotary joint 6 connects.When it is implemented, multiport is tested the signal that antenna 3 receives throws radio frequency converting switch 7 by double-pole eight
Four port vector network analyzers 1 are sent to after gating two-way.
Fig. 3 is another structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention A.Unlike Fig. 2, sent out in Fig. 3
The input terminal for penetrating antenna 2 connects a transmitter 11, and transmitter sends out swept-frequency signal all the way, space is radiated via transmitting antenna 2
In.Two receivers 12,14 are tested antenna 3 with multiport by binary channels radio frequency rotary joint 6 and connect, and are respectively used to receive
Above-mentioned multiport is tested the main polarization signal and cross-polarized signals that antenna 3 obtains.
Processing unit 5 is separately connected with receiver 12,14 and antenna measurement turntable 4, for obtaining above-mentioned main polarization signal
Level, the level of cross-polarized signals and the rotational angle of antenna measurement turntable 4, and according to the electricity of above-mentioned main polarization signal
The flat, level of cross-polarized signals and rotational angle generate antenna radiation pattern and export.
Fig. 4 is the structural schematic diagram of another embodiment of the present invention sweep-frequency measurement system B.As shown in figure 4, being swept with shown in Fig. 2
Unlike frequency measuring system A, the transmitting antenna in sweep-frequency measurement system B is dual-port dual polarization transmitting antenna 8, four ports arrow
Two output ends of amount Network Analyzer 1 are connect with two input terminals of dual-port dual polarization transmitting antenna 8 respectively, pass through both-end
Two orthogonal emission ports of mouthful dual polarization transmitting antenna 8 are to the mutually orthogonal swept-frequency signal of space radiation two-way.
It includes two mutually orthogonal receiving ports that multiport, which is tested antenna 3, is respectively used to receive dual-port dual polarization hair
The swept-frequency signal that antenna 8 is sent out is penetrated, each receiving port receives main polarization signal and all the way cross-polarized signals all the way respectively, altogether
Meter obtains the main polarization signal of two-way and two-way cross-polarized signals.When it is implemented, multiport is tested the signal that antenna 3 receives
It is thrown after radio frequency converting switch 7 gates two-way by double-pole eight and sends four port vector network analyzers 1 to, the double-pole eight of gating is thrown
Each access of radio frequency converting switch 7 transmits main polarization signal and all the way cross-polarized signals all the way.
In one embodiment, two emission ports of above-mentioned dual-port dual polarization transmitting antenna 8 are respectively+45 ° of transmitting terminals
Mouth and -45 ° of emission ports, and it is respectively+45 ° of receiving terminals that multiport, which is tested two mutually orthogonal receiving ports of antenna 3,
Mouth and -45 ° of receiving ports.At this point ,+45 ° of receiving ports are for receiving+45 ° of emission ports, -45 ° of emission ports send out it is mutual
Orthogonal signal respectively obtains main polarization signal, all the way cross-polarized signals all the way；- 45 ° of receiving ports are for receiving+45 ° of hairs
It penetrates port, the mutually orthogonal signal that -45 ° of emission ports are sent out, and respectively obtains cross-polarized signals, main polarization all the way all the way
Signal.Therefore, multiport is tested antenna 3 and receives two-way cross-polarized signals and the main polarization signal of two-way altogether.
In another embodiment, two emission ports of above-mentioned dual-port dual polarization transmitting antenna 8 are respectively Vertical Launch
Port and horizontal emission port, and it is respectively vertical reception that multiport, which is tested two mutually orthogonal receiving ports of antenna 3,
Port and horizontal receiving port.At this point, vertical reception port is for receiving Vertical Launch port, the phase that horizontal emission port is sent out
Mutually orthogonal signal, respectively obtains main polarization signal, all the way cross-polarized signals all the way；Horizontal receiving port is vertical for receiving
The mutually orthogonal signal that emission port, horizontal emission port are sent out, and respectively obtain cross-polarized signals, all the way main pole all the way
Change signal.Therefore, multiport is tested antenna 3 and receives two-way cross-polarized signals and the main polarization signal of two-way altogether.
Two input terminals of four port vector network analyzers 1 are tested by binary channels radio frequency rotary joint 6 and multiport
Antenna 3 connects, and each input terminal receives main polarization signal all the way and all the way cross-polarized signals.
Processing unit 5 obtains the level of the main polarization signal of above-mentioned two-way, the level of two-way cross-polarized signals and antenna and surveys
The rotational angle of turntable 4 is measured, and is generated according to the level of above-mentioned main polarization signal, the level of cross-polarized signals and rotational angle
Antenna radiation pattern simultaneously exports.
Fig. 5 is another structural schematic diagram of sweep-frequency measurement system of embodiment of the present invention B, unlike Fig. 4, in Fig. 5
Two input terminals of dual-port dual polarization transmitting antenna 8 are separately connected a transmitter 11,13, and transmitter 11,13 sends out one respectively
Road swept-frequency signal, via dual-port dual polarization transmitting antenna 8 to the mutually orthogonal swept-frequency signal of space radiation two-way.Two receptions
Machine 12,14 is tested antenna 3 with multiport by binary channels radio frequency rotary joint 6 and connect, and is respectively used to receive above-mentioned multiport quilt
The main polarization signal and cross-polarized signals that observation line 3 obtains.
Processing unit 5 is separately connected with receiver 12,14 and antenna measurement turntable 4, for obtaining above-mentioned main polarization signal
Level, the level of cross-polarized signals and the rotational angle of antenna measurement turntable 4, and according to the electricity of above-mentioned main polarization signal
The flat, level of cross-polarized signals and rotational angle generate antenna radiation pattern and export.
The measurement efficiency of above-mentioned sweep-frequency measurement system B is 4 times of conventional one-channel sweep-frequency measurement system, is early stage frequency spectrum letter
4 × n times of number source point frequency measuring system, measurement efficiency greatly improves.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above example
Explanation be merely used to help understand the present invention method and its core concept；Meanwhile for those of ordinary skill in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (14)
1. a kind of Frequency Sweeping Method based on diversity concept, which is characterized in that the Frequency Sweeping Method includes：
Transmitting antenna receives at least swept-frequency signal all the way, and to swept-frequency signal described in space radiation；
Tool is tested antenna there are two the multiport of mutually orthogonal receiving port and receives the swept-frequency signal, obtains main polarization signal
And cross-polarized signals；
Receiving device receives the main polarization signal, the cross-polarized signals；
It is tested that processing unit obtains the level of the main polarization signal, the level of the cross-polarized signals and the multiport
The rotational angle of antenna, and according to the level of the main polarization signal, the level of cross-polarized signals and multiport by observation
The rotational angle of line generates antenna radiation pattern and exports.
2. the Frequency Sweeping Method according to claim 1 based on diversity concept, which is characterized in that the transmitting antenna is
Single port single polarization transmitting antenna includes to swept-frequency signal described in space radiation：
The single port single polarization transmitting antenna is to space radiation swept-frequency signal all the way.
3. the Frequency Sweeping Method according to claim 2 based on diversity concept, which is characterized in that multiport is tested antenna
The swept-frequency signal is received, main polarization signal and cross-polarized signals are obtained, including：
A receiving port of antenna is tested with the emission port multiport disposed in parallel of the single port single polarization transmitting antenna
The swept-frequency signal is received, main polarization signal is obtained；
The multiport of setting orthogonal with the emission port of single port single polarization transmitting antenna is tested another receiving terminal of antenna
Mouth receives the swept-frequency signal, obtains cross-polarized signals.
4. the Frequency Sweeping Method according to claim 1 based on diversity concept, which is characterized in that the transmitting antenna is
Dual-port dual polarization transmitting antenna includes to swept-frequency signal described in space radiation：
The dual-port dual polarization transmitting antenna is to the mutually orthogonal swept-frequency signal of space radiation two-way.
5. the Frequency Sweeping Method according to claim 4 based on diversity concept, which is characterized in that multiport is tested antenna
The swept-frequency signal is received, main polarization signal and cross-polarized signals are obtained, including：
The multiport is tested two that one of antenna receiving port receives the dual-port dual polarization transmitting antenna radiation
The mutually orthogonal swept-frequency signal in road obtains main polarization signal, all the way cross-polarized signals all the way；
Another receiving port that the multiport is tested antenna receives the two-way that the dual-port dual polarization transmitting antenna radiates
Mutually orthogonal swept-frequency signal obtains main polarization signal, all the way cross-polarized signals all the way.
6. a kind of sweep-frequency measurement system, which is characterized in that the sweep-frequency measurement system includes：Four port vector network analyzers,
Transmitting antenna, multiport are tested antenna, antenna measurement turntable and a processing unit；Wherein,
At least one output end of four port vector network analyzer is connect with the transmitting antenna, and two input terminals pass through
The antenna measurement turntable equipped with binary channels radio frequency rotary joint connects the multiport and is tested antenna；The multiport is tested
Antenna is set on the antenna measurement turntable；The processing unit and four port vector network analyzer and the antenna
Measuring circurmarotate is separately connected；
Four port vector network analyzer is by the transmitting antenna to space radiation at least swept-frequency signal all the way；
It includes two mutually orthogonal receiving ports that the multiport, which is tested antenna, is respectively used to receive the swept-frequency signal, obtain
To main polarization signal and cross-polarized signals；
Four port vector network analyzer is for receiving the main polarization signal and cross-polarized signals；
The processing unit is for obtaining the level of the main polarization signal, the level of cross-polarized signals and the antenna measurement
The rotational angle of turntable, and day is generated according to the level of the main polarization signal, the level of cross-polarized signals and rotational angle
Line directional diagram simultaneously exports.
7. sweep-frequency measurement system according to claim 6, which is characterized in that the transmitting antenna is sent out for single port single polarization
Penetrate antenna, four port vector network analyzer is by the single port single polarization transmitting antenna to space radiation frequency sweep all the way
Signal.
8. sweep-frequency measurement system according to claim 7, which is characterized in that the multiport is tested two of antenna mutually
Orthogonal receiving port is respectively+45 ° of receiving ports and -45 ° of receiving ports.
9. sweep-frequency measurement system according to claim 7, which is characterized in that the multiport is tested two of antenna mutually
Orthogonal receiving port is respectively vertical reception port and horizontal receiving port.
10. sweep-frequency measurement system according to claim 6, which is characterized in that the transmitting antenna is dual-port dual polarization
Transmitting antenna, four port vector network analyzer is by the dual-port dual polarization transmitting antenna to space radiation two-way phase
Mutually orthogonal swept-frequency signal.
11. sweep-frequency measurement system according to claim 10, which is characterized in that the dual-port dual polarization transmitting antenna
Two emission ports are respectively+45 ° of emission ports and -45 ° of emission ports, and the multiport is tested two of antenna mutually
Orthogonal receiving port is respectively+45 ° of receiving ports and -45 ° of receiving ports.
12. sweep-frequency measurement system according to claim 10, which is characterized in that two of dual-port dual polarization transmitting antenna
Emission port is respectively Vertical Launch port and horizontal emission port, and two of the tested antenna of the multiport are mutually orthogonal
Receiving port be respectively vertical reception port and horizontal receiving port.
13. sweep-frequency measurement system according to claim 6, which is characterized in that the antenna measurement turntable rotational angle
Ranging from 0 °~360 °.
14. according to claim 6-13 any one of them sweep-frequency measurement systems, which is characterized in that the multiport is tested antenna
Radio frequency converting switch is thrown by a double-pole eight to connect with the binary channels radio frequency rotary joint.
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| CN106990300B (en) * | 2017-06-05 | 2019-04-09 | 中国电子科技集团公司第四十一研究所 | A kind of synchronous device and method for realizing antenna radiation pattern and scattering picture test |
| CN109975621A (en) * | 2019-04-11 | 2019-07-05 | 西安电子科技大学 | A kind of multi-rotor unmanned aerial vehicle large-scale antenna scene pattern measurement system and method |
| CN110470915B (en) * | 2019-07-26 | 2021-09-10 | 成都天锐星通科技有限公司 | Circularly polarized antenna test system, calibration and signal test method |
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