CN105353230A - Frequency sweep measurement method and frequency sweep measurement system based on diversity concept - Google Patents
Frequency sweep measurement method and frequency sweep measurement system based on diversity concept Download PDFInfo
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Abstract
The invention provides a frequency sweep measurement method and frequency sweep measurement system based on a diversity concept. The frequency sweep measurement method comprises the following steps: an emission frequency receiving at least one frequency sweep signals, and radiating the frequency sweep signals to space; a multi-port detected antenna with two mutually orthogonal receiving ports receiving the frequency sweep signals, and obtaining main polarization signals and cross polarization signal; a receiving device receiving the main polarization signals and the cross polarization signals; and a processing unit obtaining level of the main polarization signals, the level of the cross polarization signals and an rotation angle of the multi-port detected antenna, and generating and outputting an antenna direction map according to the level of the main polarization signals, the level of the cross polarization signals and the rotation angle of the multi-port detected antenna.
Description
Technical field
The present invention relates to antenna measurement system, particularly relate to a kind of Frequency Sweeping Method based on diversity concept and sweep-frequency measurement system.
Background technology
At present, antenna measurement system has two kinds of composition forms usually, one is made up of synthesized source, emitting antenna, tested antenna, radio-frequency (RF) switch, single channel joint and spectrum analyzer etc., its principle of work is: in space, launch specific single-frequency point sine wave signal by synthesized source by emitting antenna, after tested antenna receives the set specific frequency signal of transmission antennas transmit, the input end of spectrum analysis is sent to through single channel joint, to realize the continuous Uninterrupted Sampling to electromagnetic wave signal in 360 ° of director spaces behind radio-frequency (RF) switch gating one tunnel.Because the working frequency range of communication antenna is usually wider, need the frequency of measurement a lot, therefore the measuring system adopting spectrum signal source to set up is because measure inefficiency, usually only " high, medium and low " three frequencies are measured, the measurement demand that antenna full frequency band uses can not be met, and the point-frequency measurement system set up of above-mentioned spectrum signal source can not the simultaneously parameter such as the amplitude of measuring-signal and phase place.
The another kind of composition form of antenna measurement system by: two-port net divides, emitting antenna, tested antenna, radio-frequency (RF) switch, single channel joint etc. form, its principle of work is: a certain road in being divided by two-port net exports single channel swept-frequency signal, and by emitting antenna to space radiation swept-frequency signal, the signal received is sent to another road input end that two-port net divides by tested antenna behind radio-frequency (RF) switch gating one tunnel through single channel joint, to realize the continuous Uninterrupted Sampling to electromagnetic wave signal in 360 ° of director spaces.But the measurement efficiency with the antenna measurement system of this composition form is general, expansion upgrading space is little, generally applies to now in antenna measurement.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of Frequency Sweeping Method based on diversity concept and sweep-frequency measurement system.
One aspect of the present invention provides a kind of Frequency Sweeping Method based on diversity concept, and described Frequency Sweeping Method comprises:
Emitting antenna receives at least one road swept-frequency signal, and to swept-frequency signal described in space radiation;
The tested antenna of multiport with two mutually orthogonal receiving ports receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals;
Receiving equipment receives described main polarization signal, described cross-polarized signals;
Processing unit obtains the rotational angle of the level of described main polarization signal, the level of described cross-polarized signals and the tested antenna of described multiport, and generates antenna radiation pattern according to the rotational angle of the described level of main polarization signal, the level of cross-polarized signals and the tested antenna of multiport and export.
In one embodiment, described emitting antenna is single port single polarization emitting antenna, comprises to swept-frequency signal described in space radiation:
Described single port single polarization emitting antenna is to space radiation one tunnel swept-frequency signal.
In one embodiment, the tested antenna of multiport receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals, comprising:
One receiving port of the tested antenna of multiport be arranged in parallel with the emission port of described single port single polarization emitting antenna receives described swept-frequency signal, obtains main polarization signal;
Receive described swept-frequency signal with another receiving port of the tested antenna of multiport of the orthogonal setting of emission port of described single port single polarization emitting antenna, obtain cross-polarized signals.
In one embodiment, described emitting antenna is dual-port dual polarization emitting antenna, comprises to swept-frequency signal described in space radiation:
Described dual-port dual polarization emitting antenna is to the mutually orthogonal swept-frequency signal of space radiation two-way.
In one embodiment, the tested antenna of multiport receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals, comprising:
One of them receiving port of the tested antenna of described multiport receives the mutually orthogonal swept-frequency signal of the two-way of described dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals;
Another receiving port of the tested antenna of described multiport receives the mutually orthogonal swept-frequency signal of the two-way of described dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals.
The present invention additionally provides a kind of sweep-frequency measurement system on the other hand, and described sweep-frequency measurement system comprises: four port vector network analyzers, emitting antenna, the tested antenna of multiport, antenna measurement turntable and a processing unit; Wherein,
At least one output terminal of described four port vector network analyzers is connected with described emitting antenna, and two input ends connect the tested antenna of described multiport by the described antenna measurement turntable being provided with binary channels radio frequency rotary joint; The tested antenna of described multiport is arranged on described antenna measurement turntable; Described processing unit is connected respectively with described four port vector network analyzers and described antenna measurement turntable;
Described four port vector network analyzers by described emitting antenna at least one road of space radiation swept-frequency signal;
The tested antenna of described multiport comprises two mutually orthogonal receiving ports, is respectively used to receive described swept-frequency signal, obtains main polarization signal and cross-polarized signals;
Described four port vector network analyzers are for receiving described main polarization signal and cross-polarized signals;
Described processing unit for obtaining the rotational angle of the described level of main polarization signal, the level of cross-polarized signals and described antenna measurement turntable, and generates antenna radiation pattern according to the described level of main polarization signal, the level of cross-polarized signals and rotational angle and exports.
In one embodiment, described emitting antenna is single port single polarization emitting antenna, described four port vector network analyzers by described single port single polarization emitting antenna to space radiation one tunnel swept-frequency signal.
In one embodiment, two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively+45 ° of receiving ports and-45 ° of receiving ports.
In one embodiment, two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively vertical reception port and horizontal receiving port.
In one embodiment, described emitting antenna is dual-port dual polarization emitting antenna, described four port vector network analyzers by described dual-port dual polarization emitting antenna to the mutually orthogonal swept-frequency signal of space radiation two-way.
In one embodiment, two emission ports of described dual-port dual polarization emitting antenna are respectively+45 ° of emission ports and-45 ° of emission ports, and two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively+45 ° of receiving ports and-45 ° of receiving ports.
In one embodiment, two emission ports of dual-port dual polarization emitting antenna are respectively Vertical Launch port and horizontal emission port, and two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively vertical reception port and horizontal receiving port.
In one embodiment, the scope of described antenna measurement turntable rotational angle is 0 ° ~ 360 °.
In one embodiment, the tested antenna of described multiport is thrown radio frequency converting switch by a double-pole eight and is connected with described binary channels radio frequency rotary joint.
Tested antenna in point-frequency measurement system often turns around and can only measure a frequency, and the tested antenna of multiport in sweep-frequency measurement system provided by the invention often turns around and can complete n (n depends on the frequency point setting of network analyzer, be at least 101 frequencies) measurement, improve to a great extent measure to also solve that spectrum signal source sets up point-frequency measurement system while efficiency can not measuring amplitude and phase place etc. are intrinsic simultaneously antenna measurement problem, improve means and the precision of measurement.Further, the present invention also has the advantage that automaticity is high, expansion upgrading space is large and applicable situation is wide.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention based on the Frequency Sweeping Method of diversity concept;
Fig. 2 is the structural representation of embodiment of the present invention sweep-frequency measurement system A;
Fig. 3 is another structural representation of embodiment of the present invention sweep-frequency measurement system A;
Fig. 4 is the structural representation of another embodiment of the present invention sweep-frequency measurement system B;
Fig. 5 is another structural representation of embodiment of the present invention sweep-frequency measurement system B.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention based on the Frequency Sweeping Method of diversity concept.As shown in Figure 1, the Frequency Sweeping Method based on diversity concept provided by the invention comprises the following steps:
Step 1, emitting antenna receive at least one road swept-frequency signal, and to the above-mentioned swept-frequency signal of space radiation.
Step 2, the tested antenna of multiport with two mutually orthogonal receiving ports receive described swept-frequency signal, obtain main polarization signal and cross-polarized signals.
Step 3, receiving equipment receive described main polarization signal, described cross-polarized signals.
Step 4, processing unit obtain the rotational angle of the level of described main polarization signal, the level of described cross-polarized signals and the tested antenna of described multiport, and generate antenna radiation pattern according to the rotational angle of the described level of main polarization signal, the level of cross-polarized signals and the tested antenna of multiport and export.
Compared to point-frequency measurement method, the measurement efficiency of the Frequency Sweeping Method based on diversity concept provided by the invention improves greatly, what solve point-frequency measurement method can not antenna measurement problem that simultaneously measuring amplitude and phase place etc. are intrinsic, improves means and the precision of measurement.
In step 1, when emitting antenna is single port single polarization emitting antenna, this single port single polarization emitting antenna is to space radiation one tunnel swept-frequency signal.
Normally, above-mentioned single port single polarization emitting antenna to space with linear polarization mode radiation one tunnel swept-frequency signal.Now, a receiving port (main polarization port of the tested antenna of multiport be arranged in parallel with the emission port of this single port single polarization emitting antenna, namely polarize with emitting antenna identical port) receive above-mentioned swept-frequency signal, obtain main polarization signal, with another receiving port (cross polarization port of the tested antenna of multiport of the orthogonal setting of emission port of above-mentioned single port single polarization emitting antenna, namely with the port of emitting antenna polarization orthogonal) receive above-mentioned swept-frequency signal, obtain cross-polarized signals.Receiving equipment obtains main polarization signal from main polarization port, obtains cross-polarized signals from cross polarization port.
In step 1, when emitting antenna is dual-port dual polarization emitting antenna, this dual-port dual polarization emitting antenna receives two-way swept-frequency signal, and to the mutually orthogonal swept-frequency signal of space radiation two-way.
Now, one of them receiving port of the tested antenna of multiport receives the mutually orthogonal swept-frequency signal of the two-way of above-mentioned dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals;
Another receiving port of the tested antenna of multiport receives the mutually orthogonal swept-frequency signal of the two-way of above-mentioned dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals.Receiving equipment receives the main polarization signal of above-mentioned two-way and two-way cross-polarized signals simultaneously.
Fig. 2 is the structural representation of embodiment of the present invention sweep-frequency measurement system A.As shown in Figure 2, sweep-frequency measurement system A comprises: the tested antenna 3 of four port vector network analyzers 1, emitting antenna 2, multiport, antenna measurement turntable 4 and a processing unit 5.
At least one output terminal of four port vector network analyzers 1 is connected with emitting antenna 2, to pass through emitting antenna 2 at least one road of space radiation swept-frequency signal.The output terminal that Fig. 2 illustrate only four port vector network analyzers 1 is connected with emitting antenna 2, therefore can pass through emitting antenna 2 to space radiation one tunnel swept-frequency signal, but the present invention is not as limit.
The tested antenna of multiport 3 comprises two mutually orthogonal receiving ports, is respectively used to the road swept-frequency signal that reception emitting antenna 2 sends, obtains main polarization signal and cross-polarized signals.
The tested antenna 3 of multiport is arranged on antenna measurement turntable 4, can be driven rotation by antenna measurement turntable 4.Two input ends that antenna measurement turntable 4 is provided with binary channels radio frequency rotary joint 6, four port vector network analyzer 1 are connected by the tested antenna 3 of binary channels radio frequency rotary joint 6 and multiport, for receiving above-mentioned main polarization signal and cross-polarized signals.
Processing unit 5 is connected respectively with four port vector network analyzers 1 and antenna measurement turntable 4, for obtaining the rotational angle of the above-mentioned level of main polarization signal, the level of cross-polarized signals and antenna measurement turntable 4, and generate antenna radiation pattern according to the above-mentioned level of main polarization signal, the level of cross-polarized signals and rotational angle and export.
During concrete enforcement, while the tested antenna 3 of multiport is driven and revolves by antenna measurement turntable 4 and turn around, four port vector network analyzers 1 receive the polarization characteristic measurement data of co polar signal and cross-polarized signals from the tested antenna 3 of multiport, thus realize simultaneously to the Performance Detection with two receiving ports of different polarization characteristic of the tested antenna of multiport 3.
The measurement efficiency of sweep-frequency measurement system provided by the invention is the twice of conventional one-channel sweep-frequency measurement system, and the 2 × n being early stage spectrum signal source point frequency measuring system doubly, measures efficiency higher.And, tested antenna in point-frequency measurement system often turns around and can only measure a frequency, and the tested antenna in sweep-frequency measurement system provided by the invention often turns around and can complete n (n depends on the frequency point setting of network analyzer, be at least 101 frequencies) measurement, improve measure to also solve the point-frequency measurement system set up in spectrum signal source while efficiency can not measuring amplitude and phase place etc. are intrinsic simultaneously antenna measurement problem, improve means and the precision of measurement.In addition, the present invention also has the advantage that automaticity is high, expansion upgrading space is large and applicable situation is wide.
In one embodiment, emitting antenna 2 is single port single polarization emitting antenna, and four port vector network analyzers 1 pass through this single port single polarization emitting antenna to space radiation one tunnel swept-frequency signal.
In one embodiment, when the emission port of above-mentioned single port single polarization emitting antenna is+45 ° of emission ports, when the mutually orthogonal receiving port of two of the tested antenna of multiport 3 is respectively+45 ° of receiving ports and-45 ° of receiving ports, the signal that+45 ° of receiving ports receive is main polarization signal, and the signal that-45 ° of receiving ports receive is cross-polarized signals.
In like manner, when the emission port of above-mentioned single port single polarization emitting antenna is-45 ° of emission ports, when the mutually orthogonal receiving port of two of the tested antenna of multiport 3 is respectively+45 ° of receiving ports and-45 ° of receiving ports, the signal that+45 ° of receiving ports receive is cross-polarized signals, and the signal that-45 ° of receiving ports receive is main polarization signal.
In another embodiment, when the emission port of above-mentioned single port single polarization emitting antenna is Vertical Launch port, when the mutually orthogonal receiving port of two of the tested antenna of multiport 3 is respectively vertical reception port and horizontal receiving port, vertical reception port accepts to signal be main polarization signal, the signal that horizontal receiving port receives is cross-polarized signals.
In like manner, when the emission port of above-mentioned single port single polarization emitting antenna is horizontal emission port, when the mutually orthogonal receiving port of two of the tested antenna of multiport 3 is respectively vertical reception port and horizontal receiving port, vertical reception port accepts to signal be cross-polarized signals, the signal that horizontal receiving port receives is main polarization signal.
In one embodiment, the scope of antenna measurement turntable 4 rotational angle is 0 ° ~ 360 °, and the tested antenna 3 of multiport can be driven to rotate within the scope of 0 ° ~ 360 °.
In one embodiment, the tested antenna 3 of multiport is thrown radio frequency converting switch 7 by a double-pole eight and is connected with binary channels radio frequency rotary joint 6.During concrete enforcement, the signal that the tested antenna 3 of multiport receives is thrown after radio frequency converting switch 7 gating two-way through double-pole eight and is sent four port vector network analyzers 1 to.
Fig. 3 is another structural representation of embodiment of the present invention sweep-frequency measurement system A.With Fig. 2 unlike, in Fig. 3, the input end of emitting antenna 2 connects a transmitter 11, and transmitter sends a road swept-frequency signal, is radiated in space goes via emitting antenna 2.Two receivers 12,14 are connected by the tested antenna 3 of binary channels radio frequency rotary joint 6 and multiport, are respectively used to receive main polarization signal and cross-polarized signals that the tested antenna of above-mentioned multiport 3 obtains.
Processing unit 5 is connected respectively with receiver 12,14 and antenna measurement turntable 4, for obtaining the rotational angle of the above-mentioned level of main polarization signal, the level of cross-polarized signals and antenna measurement turntable 4, and generate antenna radiation pattern according to the above-mentioned level of main polarization signal, the level of cross-polarized signals and rotational angle and export.
Fig. 4 is the structural representation of another embodiment of the present invention sweep-frequency measurement system B.As shown in Figure 4, with the A of sweep-frequency measurement system shown in Fig. 2 unlike, emitting antenna in sweep-frequency measurement system B is dual-port dual polarization emitting antenna 8, two output terminals of four port vector network analyzers 1 are connected with two input ends of dual-port dual polarization emitting antenna 8 respectively, by two of dual-port dual polarization emitting antenna 8 orthogonal emission ports to the mutually orthogonal swept-frequency signal of space radiation two-way.
The tested antenna of multiport 3 comprises two mutually orthogonal receiving ports, be respectively used to the swept-frequency signal that reception dual-port dual polarization emitting antenna 8 sends, each receiving port receives a main polarization signal in road and a road cross-polarized signals respectively, obtains the main polarization signal of two-way and two-way cross-polarized signals altogether.During concrete enforcement, the signal that the tested antenna 3 of multiport receives is thrown after radio frequency converting switch 7 gating two-way through double-pole eight and is sent four port vector network analyzers 1 to, and each path that radio frequency converting switch 7 thrown by the double-pole eight of gating all transmits a main polarization signal in road and a road cross-polarized signals.
In one embodiment, two emission ports of above-mentioned dual-port dual polarization emitting antenna 8 are respectively+45 ° of emission ports and-45 ° of emission ports, and two of the tested antenna of multiport 3 mutually orthogonal receiving ports are respectively+45 ° of receiving ports and-45 ° of receiving ports.Now ,+45 ° of receiving ports, for the mutually orthogonal signal receiving+45 ° of emission ports ,-45 ° of emission ports send, obtain a main polarization signal in road, a road cross-polarized signals respectively;-45 ° of receiving ports for the mutually orthogonal signal receiving+45 ° of emission ports ,-45 ° of emission ports send, and obtain a road cross-polarized signals, a main polarization signal in road respectively.Therefore, the tested antenna of multiport 3 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 emitting antenna 8 are respectively Vertical Launch port and horizontal emission port, and two of the tested antenna of multiport 3 mutually orthogonal receiving ports are respectively vertical reception port and horizontal receiving port.Now, vertical reception port, for the mutually orthogonal signal receiving Vertical Launch port, horizontal emission port sends, obtains a main polarization signal in road, a road cross-polarized signals respectively; Horizontal receiving port for the mutually orthogonal signal receiving Vertical Launch port, horizontal emission port sends, and obtains a road cross-polarized signals, a main polarization signal in road respectively.Therefore, the tested antenna of multiport 3 receives two-way cross-polarized signals and the main polarization signal of two-way altogether.
Two input ends of four port vector network analyzers 1 are connected by the tested antenna 3 of binary channels radio frequency rotary joint 6 and multiport, and each input end receives a main polarization signal in road and a road cross-polarized signals.
Processing unit 5 obtains the rotational angle of the level of the main polarization signal of above-mentioned two-way, the level of two-way cross-polarized signals and antenna measurement turntable 4, and generates antenna radiation pattern according to the above-mentioned level of main polarization signal, the level of cross-polarized signals and rotational angle and export.
Fig. 5 is another structural representation of embodiment of the present invention sweep-frequency measurement system B, with Fig. 4 unlike, two input ends of the dual-port dual polarization emitting antenna 8 in Fig. 5 connect a transmitter 11,13 respectively, transmitter 11,13 sends a road swept-frequency signal respectively, via dual-port dual polarization emitting antenna 8 to the mutually orthogonal swept-frequency signal of space radiation two-way.Two receivers 12,14 are connected by the tested antenna 3 of binary channels radio frequency rotary joint 6 and multiport, are respectively used to receive main polarization signal and cross-polarized signals that the tested antenna of above-mentioned multiport 3 obtains.
Processing unit 5 is connected respectively with receiver 12,14 and antenna measurement turntable 4, for obtaining the rotational angle of the above-mentioned level of main polarization signal, the level of cross-polarized signals and antenna measurement turntable 4, and generate antenna radiation pattern according to the above-mentioned level of main polarization signal, the level of cross-polarized signals and rotational angle and export.
The measurement efficiency of above-mentioned sweep-frequency measurement system B is 4 times of conventional one-channel sweep-frequency measurement system, and the 4 × n being early stage spectrum signal source point frequency measuring system doubly, measures efficiency and greatly improves.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. based on a Frequency Sweeping Method for diversity concept, it is characterized in that, described Frequency Sweeping Method comprises:
Emitting antenna receives at least one road swept-frequency signal, and to swept-frequency signal described in space radiation;
The tested antenna of multiport with two mutually orthogonal receiving ports receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals;
Receiving equipment receives described main polarization signal, described cross-polarized signals;
Processing unit obtains the rotational angle of the level of described main polarization signal, the level of described cross-polarized signals and the tested antenna of described multiport, and generates antenna radiation pattern according to the rotational angle of the described level of main polarization signal, the level of cross-polarized signals and the tested antenna of multiport and export.
2. the Frequency Sweeping Method based on diversity concept according to claim 1, is characterized in that, described emitting antenna is single port single polarization emitting antenna, comprises to swept-frequency signal described in space radiation:
Described single port single polarization emitting antenna is to space radiation one tunnel swept-frequency signal.
3. the Frequency Sweeping Method based on diversity concept according to claim 2, is characterized in that, the tested antenna of multiport receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals, comprising:
One receiving port of the tested antenna of multiport be arranged in parallel with the emission port of described single port single polarization emitting antenna receives described swept-frequency signal, obtains main polarization signal;
Receive described swept-frequency signal with another receiving port of the tested antenna of multiport of the orthogonal setting of emission port of described single port single polarization emitting antenna, obtain cross-polarized signals.
4. the Frequency Sweeping Method based on diversity concept according to claim 1, is characterized in that, described emitting antenna is dual-port dual polarization emitting antenna, comprises to swept-frequency signal described in space radiation:
Described dual-port dual polarization emitting antenna is to the mutually orthogonal swept-frequency signal of space radiation two-way.
5. the Frequency Sweeping Method based on diversity concept according to claim 4, is characterized in that, the tested antenna of multiport receives described swept-frequency signal, obtains main polarization signal and cross-polarized signals, comprising:
One of them receiving port of the tested antenna of described multiport receives the mutually orthogonal swept-frequency signal of the two-way of described dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals;
Another receiving port of the tested antenna of described multiport receives the mutually orthogonal swept-frequency signal of the two-way of described dual-port dual polarization emitting antenna radiation, obtains a main polarization signal in road, a road cross-polarized signals.
6. a sweep-frequency measurement system, is characterized in that, described sweep-frequency measurement system comprises: four port vector network analyzers, emitting antenna, the tested antenna of multiport, antenna measurement turntable and a processing unit; Wherein,
At least one output terminal of described four port vector network analyzers is connected with described emitting antenna, and two input ends connect the tested antenna of described multiport by the described antenna measurement turntable being provided with binary channels radio frequency rotary joint; The tested antenna of described multiport is arranged on described antenna measurement turntable; Described processing unit is connected respectively with described four port vector network analyzers and described antenna measurement turntable;
Described four port vector network analyzers by described emitting antenna at least one road of space radiation swept-frequency signal;
The tested antenna of described multiport comprises two mutually orthogonal receiving ports, is respectively used to receive described swept-frequency signal, obtains main polarization signal and cross-polarized signals;
Described four port vector network analyzers are for receiving described main polarization signal and cross-polarized signals;
Described processing unit for obtaining the rotational angle of the described level of main polarization signal, the level of cross-polarized signals and described antenna measurement turntable, and generates antenna radiation pattern according to the described level of main polarization signal, the level of cross-polarized signals and rotational angle and exports.
7. sweep-frequency measurement system according to claim 6, is characterized in that, described emitting antenna is single port single polarization emitting antenna, described four port vector network analyzers by described single port single polarization emitting antenna to space radiation one tunnel swept-frequency signal.
8. sweep-frequency measurement system according to claim 7, is characterized in that, the mutually orthogonal receiving port of two of the tested antenna of described multiport is respectively+45 ° of receiving ports and-45 ° of receiving ports.
9. sweep-frequency measurement system according to claim 7, is characterized in that, the mutually orthogonal receiving port of two of the tested antenna of described multiport is respectively vertical reception port and horizontal receiving port.
10. sweep-frequency measurement system according to claim 6, it is characterized in that, described emitting antenna is dual-port dual polarization emitting antenna, described four port vector network analyzers by described dual-port dual polarization emitting antenna to the mutually orthogonal swept-frequency signal of space radiation two-way.
11. sweep-frequency measurement systems according to claim 10, it is characterized in that, two emission ports of described dual-port dual polarization emitting antenna are respectively+45 ° of emission ports and-45 ° of emission ports, and two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively+45 ° of receiving ports and-45 ° of receiving ports.
12. sweep-frequency measurement systems according to claim 10, it is characterized in that, two emission ports of dual-port dual polarization emitting antenna are respectively Vertical Launch port and horizontal emission port, and two of the tested antenna of described multiport mutually orthogonal receiving ports are respectively vertical reception port and horizontal receiving port.
13. sweep-frequency measurement systems according to claim 6, is characterized in that, the scope of described antenna measurement turntable rotational angle is 0 ° ~ 360 °.
14. sweep-frequency measurement systems according to any one of claim 6-13, it is characterized in that, the tested antenna of described multiport is thrown radio frequency converting switch by a double-pole eight and is connected with described binary channels radio frequency rotary joint.
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| CN101916918A (en) * | 2010-07-01 | 2010-12-15 | 中国电子科技集团公司第五十四研究所 | Automatically polarized adjustment antenna system and polarization calibration method thereof |
| CN102572861A (en) * | 2011-12-13 | 2012-07-11 | 北京邮电大学 | Polarization-diversity-gain-optimization-based polarization variation method for base station |
| CN103368892A (en) * | 2012-04-06 | 2013-10-23 | 电信科学技术研究院 | Transmission diversity detection method and device in OFDM system |
| CN104133120A (en) * | 2014-07-29 | 2014-11-05 | 中国电子科技集团公司第四十一研究所 | Broadband RCS test method based on multi-channel simultaneous tests |
| CN105158585A (en) * | 2015-08-26 | 2015-12-16 | 武汉虹信通信技术有限责任公司 | Long term evolution (LTE) antenna intelligent measurement system |
| CN205333746U (en) * | 2015-12-07 | 2016-06-22 | 工业和信息化部电信研究院 | Frequency sweep measurement system based on diversity notion |
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| CN106990300A (en) * | 2017-06-05 | 2017-07-28 | 中国电子科技集团公司第四十研究所 | Antenna radiation pattern and device and method of the scattering as test are realized in a kind of synchronization |
| 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 |
| CN110470915A (en) * | 2019-07-26 | 2019-11-19 | 成都天锐星通科技有限公司 | A kind of circular polarized antenna test macro, calibration and signal testing 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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