CN102843200A - Radio frequency test device and mobile terminal test system - Google Patents
Radio frequency test device and mobile terminal test system Download PDFInfo
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- CN102843200A CN102843200A CN2012103381858A CN201210338185A CN102843200A CN 102843200 A CN102843200 A CN 102843200A CN 2012103381858 A CN2012103381858 A CN 2012103381858A CN 201210338185 A CN201210338185 A CN 201210338185A CN 102843200 A CN102843200 A CN 102843200A
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Abstract
The invention discloses a radio frequency test device and a mobile terminal test system. The radio frequency test device comprises an integrated tester and an interference signal generator, and further comprises a first isolator and a combiner, wherein the integrated tester comprises an emitting port and a receiving port which are separated; the emitting port is connected with the input port of the first isolator; the output port of the first isolator is connected with one input port of the combiner; the interference signal generator is connected with other input ports of the combiner; a radio frequency emission signal emitted by the integrated tester or a radio frequency signal emitted by the integrated tester and the interference signal generator are output by the output port of the combiner; and the radio frequency signal received by the radio frequency test device accesses to the integrated tester via the receiving port. According to the radio frequency test device provided by the invention, the emitting report and the receiving port are separated, and the isolator is used to isolate the signals, thereby effectively avoiding mutual interference of the signals, improving the test stability and the test accuracy of the test device.
Description
Technical field
The invention belongs to the radio frequency testing technical field, specifically, relate to radio frequency testing equipment and adopt the mobile terminal test system of this radio frequency testing equipment.
Background technology
The mobile communication technology development is rapid, and the continuous evolution of various standards has got into the 3G epoch at present, mainly includes WCDMA, EVDO and TD-SCDMA.And mobile Internet is used the application mainstream that becomes portable terminal, and therefore, RF index becomes one of important indicator of passing judgment on terminal capabilities quality quality.Along with the lifting of continuous advancement in technology and data rate, also increasingly high to the requirement of relevant RF capabilities.The test of each standard RF index when technology is progressively ripe, transfers signaling mode by non-signaling mode along with the support of instrument producer.Generally, for improving testing efficiency, need build automatization test system and carry out the radio-frequency performance test.When building radio frequency test system, most important for the design of radio frequency testing flow pattern, with the stability that influences precision of test result and test process.
At present, the radio frequency testing of most of communication terminal all is to be operated under the signaling mode.And transmitting and receiving of comprehensive test instrument all is to adopt same prevention at radio-frequency port to carry out the test of RF index in the existing communication terminal test system.When adopting this test macro that communication terminal is carried out the test of receiver jamming performance index; Owing to need to add interference source; Be easy to generate the problem of following phase mutual interference: on the one hand; The high-power interference signal that interference source produces can get into the prevention at radio-frequency port of comprehensive test instrument, influence prevention at radio-frequency port input, export signal, cause instability and test result inaccurate of test macro; On the other hand, interference source is vulnerable to the influence of mobile terminal emitting power, causes interference signal output unstable, produces measure error, when serious even can damage the interference signal generator.
Summary of the invention
Above-mentioned at least one problem of phase mutual interference between each instrument that exists when the present invention is directed to mobile terminal test in the prior art and a kind of radio frequency testing equipment is provided; Through emission port being separated with receiving port and utilizing isolator to carry out Signal Spacing; Can effectively avoid the phase mutual interference between the signal, improve the stable testing property and the test accuracy of testing equipment.
For realizing the foregoing invention purpose, the present invention adopts following technical proposals to be achieved:
A kind of radio frequency testing equipment; Comprise comprehensive test instrument and interference signal generator; Also include first isolator and mixer; Comprehensive test instrument has the emission port and the receiving port of separation, and emission port is connected with the input port of first isolator, and the output port of first isolator connects an input port of mixer; The interference signal generator connects other input ports of mixer, and the radio frequency transmissions that radio frequency transmissions that comprehensive test instrument sends or comprehensive test instrument and interference signal generator send sends through the output port of mixer; The radio frequency receiving signal that radio frequency testing equipment receives gets into comprehensive test instrument through receiving port.
Aforesaid radio frequency testing equipment; For the portable terminal emitted power signal of avoiding external testing enters into interferance generator; Said radio frequency testing equipment also includes second isolator; The output port of said mixer is connected with the input port of second isolator, and said radio frequency transmissions sends through the output port of second isolator.
Perhaps; Said radio frequency testing equipment also includes circulator; Circulator has first port, second port and the 3rd port; Signal is along the sequential delivery of first port, second port and the 3rd port, and first port is connected with the output port of said mixer, and said radio frequency transmissions sends through second port; Said radio frequency receiving signal warp second port and the 3rd port get into the receiving port of said comprehensive test instrument, and then get into comprehensive test instrument through receiving port.Through circulator is set, when the portable terminal emitted power signal of effectively avoiding testing enters into interferance generator, can also solve the problem that receiving port that interference signal because of interferance generator seals in comprehensive test instrument influences test accuracy.
Aforesaid radio frequency testing equipment; Be filtering interference signals, guarantee that the effective reception signal enters into the receiving port of comprehensive test instrument, said test macro also includes the 3rd isolator; The receiving port of said comprehensive test instrument is connected with the output port of the 3rd isolator; In having the radio frequency testing equipment of circulator, said radio frequency receiving signal gets into the receiving port of said comprehensive test instrument through second port, the 3rd port and the 3rd isolator of said circulator, and then gets into comprehensive test instrument through receiving port; And in the radio frequency testing equipment of circulator was not set, said radio frequency receiving signal warp the 3rd isolator got into the receiving port of said comprehensive test instrument, and then got into comprehensive test instrument through receiving port.
Aforesaid radio frequency testing equipment, for reducing the comprehensive test instrument design complexity, the receiving port of said comprehensive test instrument can be selected the emission/reception multiplexing port of comprehensive test instrument for use.
Aforesaid radio frequency testing equipment, said interference signal generator is connected with RF switch, and then is connected with the respective input mouth of said mixer through RF switch, so that use the interference signal generator through control RF switch selectivity.
Aforesaid radio frequency testing equipment, said interference signal generator can be for a plurality of, and in the case, each interference signal generator is connected with an input port of said mixer through a RF switch respectively.
The present invention also provides a kind of possibility portable terminal to stablize, reliably reach the mobile terminal test system of higher test accuracy.Specifically; This test macro comprises portable terminal to be tested; Also include above-mentioned described radio frequency testing equipment; Portable terminal to be tested receives the radio frequency transmissions that said radio frequency testing equipment sends through wired or wireless mode, and sends radio frequency receiving signal through wired or wireless mode to radio frequency testing equipment.
Compared with prior art; Advantage of the present invention and good effect are: the different port that radio frequency testing equipment of the present invention passes through to adopt comprehensive test instrument is as emission port and receiving port; Realized emission and separating of receiving, and then be convenient to emission or receive carry out independent isolation design; And; Through the isolator with reverse isolation is set at the emission port place; The interference signal that can effectively stop interference signal generator and external moving terminal gets into the emission port of comprehensive test instrument and influences the signal emission of comprehensive test instrument; Improve the job stability of testing equipment, reduced test error.This radio frequency testing equipment is applied in the mobile terminal test system, can improves stable testing property, test accuracy and the testing efficiency of portable terminal.
After advantages embodiment of the present invention, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the structural representation of first embodiment of mobile terminal test system of the present invention;
Fig. 2 is the structural representation of second embodiment of mobile terminal test system of the present invention;
Fig. 3 is the structural representation of the 3rd embodiment of mobile terminal test system of the present invention;
Fig. 4 is the structural representation of the 4th embodiment of mobile terminal test system of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further detailed explanation.
At first; Brief description technical thought of the present invention: the present invention is directed to the problem that adopts same port and be easy to generate the phase mutual interference between the unlike signal that transmits and receives that has now in the radio frequency testing equipment that portable terminal is tested; Radio frequency testing equipment that emission port is separated with receiving port has been proposed; Through emission port and receiving port are separated; Be convenient in emission path or reception path, the different isolation structure of various structures to be set signal is isolated, thereby solve the problem of the phase mutual interference between the unlike signal.Utilize this radio frequency testing equipment to constitute mobile terminal test system and come portable terminal is tested, then can improve stability, test accuracy and the testing efficiency of test.
Please refer to Fig. 1, this is shown in Figure 1 for the structural representation of first embodiment of mobile terminal test system of the present invention.
Shown in 1, the mobile terminal test system of this embodiment comprises that the radio frequency testing equipment that is positioned at square frame reaches the portable terminal to be tested 15 that carries out radio signal transmission through wired mode and radio frequency testing equipment.
Specifically, radio frequency testing equipment includes the comprehensive test instrument 11 and the first interference signal generator 12, also includes first isolator 13 and mixer 14.Wherein, comprehensive test instrument 11 has emission port a and the receiving port b that is separated from each other out, and emission port a is connected through the radio frequency cable with the input port 1 of first isolator 13, and the output port 2 of first isolator 13 connects an input port 1 of mixer 14.Another input port 2 of mixer 14 is connected with the first interference signal generator 12 through RF switch K1, and the output port 3 of mixer 14 is connected with the reception/emission port d of portable terminal 15 to be tested through the radio frequency cable.In addition, the reception of portable terminal 15 to be tested/emission port d also is connected with the receiving port b of comprehensive test instrument 11 through the radio frequency cable.
When utilizing radio frequency testing equipment to treat testing mobile terminal 15 to carry out receiver test; At first set up process and between comprehensive test instrument 11 and portable terminal to be tested 15, set up calling, portable terminal 15 to be tested is placed carry out the signaling loopback test under the loopback test pattern then according to generalized calls.According to the test needs comprehensive test instrument 11 and the first interference signal generator 12 are set, to send test signal and the interference signal that needs.Comprehensive test instrument 11 gets in the mixer 14 through first isolator 13 through the radiofrequency signal that its emission port a sends; The interference signal that the first interference signal generator 12 sends also gets in the mixer 14; Two paths of signals synthesizes one road radio frequency transmissions through mixer 14; And send from its output port 3, transfer to portable terminal 15 to be tested through wired mode then.The respective rf that portable terminal 15 to be tested feeds back to comprehensive test instrument 11 with needs receives signal and transfers to the receiving port b of comprehensive test instrument 11 through wired mode, gets at last in the comprehensive test instrument 11, supplies comprehensive test instrument 11 to receive, analyze and handle.
In this embodiment, because first isolator 13 has the reverse isolation function, make that signal can only be from its input port 1 to output port 2 transmission, the signal of reverse transfer will be filtered.Therefore; Transmitting of interference signal that the first interference signal generator 12 sends and portable terminal to be tested 15 all can not seal in the emission port a of comprehensive test instrument 11; Reduced of the influence of the signal of other instrument and portable terminal, reduced signal each other and disturbed comprehensive test instrument 11.
In this embodiment, the first interference signal generator 12 is connected with mixer 14 through RF switch K1, through radio frequency K switch 1 is controlled automatically, can control the first interference signal generator 12 and whether participate in the radio frequency testing process, and is easy to use.
Portable terminal to be tested 15 among this embodiment carries out the transmission of radiofrequency signal through wired connection mode and radio frequency testing equipment; Can guarantee the smooth transmission of signal like this; Very suitable under the test environment of portable terminal 15 and radio frequency testing equipment close together, can improve testing efficiency.But be not limited thereto, for the transmission of wireless signals of simulating mobile terminal more truly, both can also pass through the wireless mode transmitting radio frequency signal.Under this wireless mode, only a radio frequency signal R-T unit need be set at the c place of Fig. 1, like antenna, can carry out transmission of wireless signals through antenna with portable terminal 15 to be tested then.The wired mode of concrete employing still is that wireless mode can be selected according to the test needs flexibly.
Please refer to Fig. 2, this Fig. 2 shows the structural representation of second embodiment of mobile terminal test system of the present invention.
As shown in Figure 2; The mobile terminal test system of this embodiment and Fig. 1 embodiment's is similar; Also include the radio frequency testing equipment that is positioned at square frame and carry out the portable terminal to be tested 15 of radio signal transmission, be the structure of radio frequency testing equipment with the difference of Fig. 1 embodiment through wired mode and radio frequency testing equipment.
As shown in Figure 2, the radio frequency testing equipment of this embodiment also includes comprehensive test instrument 11, the first interference signal generator 12, first isolator 13 and mixer 14, and corresponding structure is identical with Fig. 1 embodiment with annexation, can be with reference to the description of figure 1.Different is; The radio frequency testing equipment of this embodiment also includes second isolator 16; The output port 3 of mixer 14 is connected with the input port of second isolator 16, and the output port 2 of second isolator 16 will be connected with the reception/emission port d of portable terminal 15 to be tested through the radio frequency cable.
Set up after second isolator 16, the radio frequency transmissions that the output port 3 of mixer 14 sends sends through the output port 2 of second isolator 16, transfers to portable terminal 15 to be tested through wired mode then.Other signal transmission path and Fig. 1 embodiment are similar, repeat no more at this.
Because second isolator 16 also has the reverse isolation function; Therefore; The signal that portable terminal 15 to be tested sends, especially high-power signal can not seal in first interferance generator 12 through the isolation of this second isolator 16, and the signal that has reduced 15 pairs first interference signal generators 12 of portable terminal to be tested disturbs; Guaranteed that the first interference signal generator 12 can send interference signal accurately, has further improved the stability and the measuring accuracy of whole test system.
Similar like Fig. 1 embodiment, the radio frequency testing equipment of this embodiment and the transmission of the signal of portable terminal to be tested 15 also are not limited to wired mode, also can adopt wireless transmission method.Specifically, also be only a radio frequency signal R-T unit to be set at the c place of Fig. 2, like antenna, can carry out transmission of wireless signals through antenna with portable terminal 15 to be tested then.
Please refer to Fig. 3, this Fig. 3 shows the structural representation of the 3rd embodiment of mobile terminal test system of the present invention.
As shown in Figure 3; The mobile terminal test system of this embodiment and Fig. 1 embodiment's is similar; Also include the radio frequency testing equipment that is positioned at square frame and carry out the portable terminal to be tested 15 of radio signal transmission, be the structure of radio frequency testing equipment with the difference of Fig. 1 embodiment through wired mode and radio frequency testing equipment.
As shown in Figure 3, the radio frequency testing equipment of this embodiment also includes comprehensive test instrument 11, the first interference signal generator 12, first isolator 13 and mixer 14, and corresponding structure is identical with Fig. 1 embodiment with annexation, can be with reference to the description of figure 1.Different is that the radio frequency testing equipment of this embodiment also includes circulator 17.Circulator 17 has first port one, second port 2 and the 3rd port 3, and signal transmits along clockwise direction, also promptly along the sequential delivery of first port one, second port 2 and the 3rd port 3, and can not reversely transmit.First port one of circulator 17 is connected with the output port 3 of mixer 14, its second port 2 through radio frequency cable and portable terminal 15 to be tested reception/emission port d is connected, and its 3rd port 3 is connected with the receiving port b of comprehensive test instrument 11.
Set up after the circulator 17, the radio frequency transmissions that the output port 3 of mixer 14 sends transfers to second port 2 through first port one of circulator 17, transfers to portable terminal 15 to be tested from second port 2 through wired mode then.And portable terminal 15 to be tested receives signal transfers to circulator 17 through wired mode second port 2 with the respective rf that needs feed back to comprehensive test instrument 11; Get into the receiving port b of comprehensive test instrument 11 then through the 3rd port 3; Get at last in the comprehensive test instrument 11, supply comprehensive test instrument 11 to receive, analyze and handle.
This embodiment can only be along the circulator 17 of a direction transmission signals through in radio frequency testing equipment, being provided with; When effectively avoiding portable terminal 15 emitted power signals to be tested to enter into first interferance generator 12; Can also effectively avoid the interference signal of first interferance generator 12 to enter into comprehensive test instrument 11 through receiving port b; Having solved receiving port that interference signal because of interferance generator seals in comprehensive test instrument influences the problem of test accuracy, has further improved the stability and the measuring accuracy of test macro.
Similar with Fig. 1 and Fig. 2 embodiment, the signal transmission of this embodiment radio frequency testing equipment and portable terminal to be tested 15 also is not limited to wired mode, also can adopt wireless transmission method.Specifically, can a radio frequency signal R-T unit be set,, can carry out transmission of wireless signals through antenna with portable terminal 15 to be tested then like antenna at second port, 2 places of Fig. 3 circulator 17.
Please refer to Fig. 4, this is shown in Figure 4 for the structural representation of the 4th embodiment of mobile terminal test system of the present invention.
As shown in Figure 4, the mobile terminal test system of this embodiment and Fig. 3 embodiment's is similar, also includes the radio frequency testing equipment that is positioned at square frame and reaches the portable terminal to be tested 15 that carries out radio signal transmission through wired mode and radio frequency testing equipment.Difference is the structure of radio frequency testing equipment.
As shown in Figure 4; The radio frequency testing equipment of this embodiment also includes comprehensive test instrument 11, the first interference signal generator 12, first isolator 13, mixer 14 and circulator 17; Corresponding structure and annexation and Fig. 3 embodiment are similar, can be with reference to above-mentioned description to Fig. 3.Different with Fig. 3 embodiment is; Mixer 14 in the radio frequency testing equipment of the 4th embodiment has 1,2 and 3 and output ports 4 of three input ports; Be connected with the second interference signal generator 19 through RF switch K2 on its input port 3, and its output port 14 is connected with the first input end mouth 1 of circulator 17.In addition, the radio frequency testing equipment of this embodiment also is provided with the 3rd isolator 18, and its input port 1 is connected with the output port 3 of circulator 17, and its output port 2 is connected with the receiving port b of comprehensive test instrument 11.
Through increasing an interference signal generator, can enlarge the required interference signal of test, improve the comprehensive and representative of mobile terminal test.And this interference signal generator also is connected with RF switch K2, can carry out switch control to different RF switches as required, participates in the interference signal generator of test process with decision.
In addition; Owing to set up the 3rd isolator 18; Can select suitable device, making only has the radiofrequency signal of special frequency to enter into comprehensive test instrument 11 through the 3rd isolator 18, and filters out the radiofrequency signal of other unwanted frequency ranges; Can guarantee to have only the effective reception signal to enter into comprehensive test instrument 11, further improve test accuracy and testing efficiency.
Similar with Fig. 3 embodiment, the signal transmission of this embodiment radio frequency testing equipment and portable terminal to be tested 15 also is not limited to wired mode, also can adopt wireless transmission method.Specifically, also be a radio frequency signal R-T unit to be set at second port, 2 places of Fig. 4 circulator 17, like antenna, can carry out transmission of wireless signals through antenna with portable terminal 15 to be tested then.
In above-mentioned four embodiment, for reducing the design complexity of comprehensive test instrument 11, its receiving port b can select for use the emission/reception multiplexing port of comprehensive test instrument to realize.
Above embodiment is only in order to explaining technical scheme of the present invention, but not limits it; Although the present invention has been carried out detailed explanation with reference to previous embodiment, for the person of ordinary skill of the art, still can make amendment to the technical scheme that previous embodiment is put down in writing, perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of relevant art scheme break away from the spirit and the scope of the present invention's technical scheme required for protection.
Claims (10)
1. radio frequency testing equipment; Comprise comprehensive test instrument and interference signal generator; It is characterized in that, also include first isolator and mixer, comprehensive test instrument has the emission port and the receiving port of separation; Emission port is connected with the input port of first isolator; The output port of first isolator connects an input port of mixer, and the interference signal generator connects other input ports of mixer, and the radio frequency transmissions that radio frequency transmissions that comprehensive test instrument sends or comprehensive test instrument and interference signal generator send sends through the output port of mixer; The radio frequency receiving signal that radio frequency testing equipment receives gets into comprehensive test instrument through receiving port.
2. radio frequency testing equipment according to claim 1; It is characterized in that; Said radio frequency testing equipment also includes second isolator, and the output port of said mixer is connected with the input port of second isolator, and said radio frequency transmissions sends through the output port of second isolator.
3. radio frequency testing equipment according to claim 1; It is characterized in that; Said radio frequency testing equipment also includes circulator, and circulator has first port, second port and the 3rd port, and signal is along the sequential delivery of first port, second port and the 3rd port; First port is connected with the output port of said mixer, and said radio frequency transmissions sends through second port; Said radio frequency receiving signal warp second port and the 3rd port get into the receiving port of said comprehensive test instrument, and then get into comprehensive test instrument through receiving port.
4. radio frequency testing equipment according to claim 3; It is characterized in that; Said test macro also includes the 3rd isolator; The receiving port of said comprehensive test instrument is connected with the output port of the 3rd isolator, and said radio frequency receiving signal gets into the receiving port of said comprehensive test instrument through second port, the 3rd port and the 3rd isolator of said circulator, and then gets into comprehensive test instrument through receiving port.
5. radio frequency testing equipment according to claim 1; It is characterized in that; Said test macro also includes the 3rd isolator; The receiving port of said comprehensive test instrument is connected with the output port of the 3rd isolator, and said radio frequency receiving signal warp the 3rd isolator gets into the receiving port of said comprehensive test instrument, and then gets into comprehensive test instrument through receiving port.
6. according to each described radio frequency testing equipment in the claim 1 to 5, it is characterized in that the receiving port of said comprehensive test instrument is the emission/reception multiplexing port of comprehensive test instrument.
7. radio frequency testing equipment according to claim 6 is characterized in that, said interference signal generator is connected with RF switch, and then is connected with the respective input mouth of said mixer through RF switch.
8. radio frequency testing equipment according to claim 7 is characterized in that, said interference signal generator is a plurality of, and each interference signal generator is connected with an input port of said mixer through a RF switch respectively.
9. mobile terminal test system; Comprise portable terminal to be tested; It is characterized in that; Portable terminal to be tested receives the radio frequency transmissions that each described radio frequency testing equipment sends in the aforesaid right requirement 1 to 8 through wired mode, and sends radio frequency receiving signal through wired mode to radio frequency testing equipment.
10. mobile terminal test system; Comprise portable terminal to be tested; It is characterized in that; Portable terminal to be tested receives aforesaid right through wireless mode and requires the radio frequency transmissions that each described radio frequency testing equipment sends in 1 to 8, and sends radio frequency receiving signal through wireless mode to radio frequency testing equipment.
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| CN2012103381858A CN102843200A (en) | 2012-09-13 | 2012-09-13 | Radio frequency test device and mobile terminal test system |
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| CN103746160A (en) * | 2013-12-25 | 2014-04-23 | 北京星河亮点技术股份有限公司 | Combiner module and combiner device |
| CN106330349A (en) * | 2016-08-18 | 2017-01-11 | 中国电子科技集团公司第四十研究所 | Emitted/received signal conditioning device and emitted/received signal conditioning method based on high-power T/R module |
| CN106487455A (en) * | 2015-08-28 | 2017-03-08 | 上海汽车集团股份有限公司 | For system and method that radio frequency testing is adjusted and radio frequency test system |
| CN110932802A (en) * | 2019-11-29 | 2020-03-27 | Oppo广东移动通信有限公司 | Interference testing method, device, terminal and storage medium |
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Application publication date: 20121226 |