CN103607248A - Test method for receiving sensitivity of wireless communication module - Google Patents
Test method for receiving sensitivity of wireless communication module Download PDFInfo
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- CN103607248A CN103607248A CN201310392282.XA CN201310392282A CN103607248A CN 103607248 A CN103607248 A CN 103607248A CN 201310392282 A CN201310392282 A CN 201310392282A CN 103607248 A CN103607248 A CN 103607248A
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Abstract
The invention discloses a test method for the receiving sensitivity of a wireless communication module. Hardware which the test method based on only comprises two identical wireless communication modules, an adjustable attenuator, a broadband mixer and a signal source. The first wireless communication module generates an information source, the signal amplitude is adjusted through the attenuator, the frequency of the information source is converted to the operating frequency of the second wireless communication module through the mixer, and a test of the receiving sensitivity of the wireless communication module is achieved. The test method provided by the invention is low in cost and simple to implement, and can be applied to the vast majority of wireless communication modules based on radio frequency transmit-receive chips or the SOC.
Description
Technical field
The invention belongs to wireless communication technology field, be specifically related to a kind of method of testing wireless communication module receiving sensitivity.
Background technology
Along with the development of internal radio communication technology and increasing rf chip (as Si4432), SOC(are as CC2500 etc.) etc. appearance, wireless communication technology is deep into multiple fields gradually, such as water power is checked meter, streetlight monitoring etc.In these applications, radio transceiver chip is reported to Surveillance center by the remote data collecting, and realizes remote data acquisition.Application has positive meaning to product in development, this class wireless communication module radiofrequency characteristics to be carried out to effectively test.
We know, under FM/FSK mode, in the definite situation of traffic rate, transmitting power, receiving sensitivity have determined wireless communication module performance substantially.Test to power, easy frequency spectrograph can be realized; But for the test of receiving sensitivity, bring not little puzzlement often to research and development technology personnel, often cause needs to wait while drawing distance to test to outfield and just find to realize expected design.
The usual way of laboratory stage measurement sensitivity is at present: by comprehensive tester, test, be usually used in the receiving sensitivity of test communications radio station, mobile communication terminal (mobile phone etc.), and different to different communication equipment terminal models.
Yet, for most of small enterprises or the team of the starting stage of starting an undertaking, the small enterprise in the fields such as water power is checked meter such as carrying out, streetlight monitoring, it usually selects rf chip or SOC to realize short-range data communication, the wireless communication module of design is operated in the mode of operation of FSK equifrequent modulation, and traffic rate is different according to application scenarios.Problem is, the integration test instrument of existing neat cover is expensive, and small enterprise or foundation team are difficult to burden.
Summary of the invention
The object of the present invention is to provide a kind of simply, the method for testing of wireless communication module receiving sensitivity cheaply.Object of the present invention is realized by following technical scheme:
A kind of method of testing of wireless communication module receiving sensitivity, it is characterized in that, based on test macro comprise the first wireless communication module and the second wireless communication module, adjustable attenuator, broadband mixer, signal source, PC1 and the PC2 that parameter is identical, PC1 connects the first wireless communication module, the output of wireless communication module connects adjustable attenuator, the output of adjustable attenuator and the output of signal source connect the input of frequency mixer, the output of frequency mixer connects the second wireless communication module, and the second wireless communication module connects PC2; Described method of testing comprises the following steps:
(1) the first wireless communication module operating frequency being set is f1, and the second wireless communication module operating frequency is f2;
(2) signal source operating frequency under single-tone mode of operation is made as f1+f2, and signal source output amplitude is according to selecting frequency mixer parameter to determine;
(3) PC1 sends packet by serial ports, the first wireless communication module, and PC2 receives corresponding data bag by serial ports, the second wireless communication module;
(4) regulate adjustable attenuator, make PC2 receive the error rate that packet reaches reservation, now the second wireless communication module received signal strength is the receiving sensitivity of the second wireless communication module;
(5) by frequency spectrograph, test the signal strength signal intensity of the second wireless communication module, obtain the receiving sensitivity value of the second wireless communication module.
The method of testing of wireless communication module receiving sensitivity provided by the invention, its based on hardware only need to provide two identical wireless communication modules, adjustable attenuator, broadband mixer, signal source to realize; The first wireless communication module produces information source, by attenuator adjusting signal amplitude, by frequency mixer, information source is converted to the operating frequency of the second wireless communication module, realizes the test of wireless communication module receiving sensitivity.Method of testing low cost, realization that the present invention proposes are simple, can be applicable to most wireless communication modules based on rf chip or SOC.
Accompanying drawing explanation
The wireless communication module receiving sensitivity test block diagram that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
As shown in Figure 1.The method of testing of the wireless communication module receiving sensitivity that the present embodiment provides, its based on test macro comprise wireless communication module 1 and wireless communication module 2, adjustable attenuator, broadband mixer, signal source, PC1 and PC2.Wireless communication module 1 is two wireless communication modules based on rf chip or SOC that parameter is identical with wireless communication module 2.PC1 connects wireless communication module 1, and the output of wireless communication module connects adjustable attenuator, and the output of adjustable attenuator and the output of signal source connect the input of frequency mixer, and the output of frequency mixer connects wireless communication module 2, and wireless communication module 2 connects PC2.Concrete method of testing comprises the following steps:
1, wireless communication module 1 operating frequency being set is f1, and wireless communication module 2 operating frequencies are f2;
2, signal source is operated in single-tone mode of operation, and signal source operating frequency is made as f1+f2, and signal source output amplitude can be according to selecting frequency mixer parameter to determine;
3, PC1 sends packet by serial ports, wireless communication module 1, and PC2 receives packet by serial ports, wireless communication module 2;
4, by regulating adjustable attenuator, make PC2 receive the error rate that packet reaches reservation, for example 5 ‰, now wireless communication module received signal strength is the receiving sensitivity of wireless communication module;
5, by frequency spectrograph, test the signal strength signal intensity that reaches wireless communication module 2, can obtain the receiving sensitivity value of wireless communication module 2.
The method of testing low cost of the rf chip receiving sensitivity that the present invention proposes, realization simply, can be applicable to most wireless communication modules based on rf chip.
Claims (1)
1. the method for testing of a wireless communication module receiving sensitivity, it is characterized in that, based on test macro comprise the first wireless communication module and the second wireless communication module, adjustable attenuator, broadband mixer, signal source, PC1 and the PC2 that parameter is identical, PC1 connects the first wireless communication module, the output of wireless communication module connects adjustable attenuator, the output of adjustable attenuator and the output of signal source connect the input of frequency mixer, the output of frequency mixer connects the second wireless communication module, and the second wireless communication module connects PC2; Described method of testing comprises the following steps:
(1) the first wireless communication module operating frequency being set is f1, and the second wireless communication module operating frequency is f2;
(2) signal source operating frequency under single-tone mode of operation is made as f1+f2, and signal source output amplitude is according to selecting frequency mixer parameter to determine;
(3) PC1 sends packet by serial ports, the first wireless communication module, and PC2 receives corresponding data bag by serial ports, the second wireless communication module;
(4) regulate adjustable attenuator, make PC2 receive the error rate that packet reaches reservation, now the second wireless communication module received signal strength is the receiving sensitivity of the second wireless communication module;
(5) by frequency spectrograph, test the signal strength signal intensity of the second wireless communication module, obtain the receiving sensitivity value of the second wireless communication module.
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| CN201310392282.XA CN103607248A (en) | 2013-08-31 | 2013-08-31 | Test method for receiving sensitivity of wireless communication module |
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| CN201310392282.XA CN103607248A (en) | 2013-08-31 | 2013-08-31 | Test method for receiving sensitivity of wireless communication module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430756A (en) * | 2014-09-11 | 2016-03-23 | 中国移动通信集团公司 | Method of adjusting reception sensitivity and access point |
| CN113037401A (en) * | 2021-03-12 | 2021-06-25 | 上海磐启微电子有限公司 | Chip radio frequency index testing method and system with high link budget |
| CN113114301A (en) * | 2021-05-19 | 2021-07-13 | 扬州万方电子技术有限责任公司 | System and method for measuring receiver sensitivity of frequency hopping communication equipment |
| CN115021832A (en) * | 2022-06-02 | 2022-09-06 | 上海磐启微电子有限公司 | Chip communication test system with low cost and high isolation |
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| CN101365215A (en) * | 2008-09-12 | 2009-02-11 | 深圳华为通信技术有限公司 | Single board calibrating method, system and clamp for single board calibration |
| CN102158242A (en) * | 2011-05-25 | 2011-08-17 | 哈尔滨工业大学 | System and method for testing antijamming capability of wireless communication products operating at ISM (Industry, Science and Medical) frequency range |
| CN102821416A (en) * | 2011-06-10 | 2012-12-12 | 芯讯通无线科技（上海）有限公司 | System for testing abnormal interruption of wireless communication module and application method thereof |
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- 2013-08-31 CN CN201310392282.XA patent/CN103607248A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20050080766A (en) * | 2004-02-11 | 2005-08-18 | 에스케이 텔레콤주식회사 | Auto attenuation control method in rf inspection system |
| CN101365215A (en) * | 2008-09-12 | 2009-02-11 | 深圳华为通信技术有限公司 | Single board calibrating method, system and clamp for single board calibration |
| CN102158242A (en) * | 2011-05-25 | 2011-08-17 | 哈尔滨工业大学 | System and method for testing antijamming capability of wireless communication products operating at ISM (Industry, Science and Medical) frequency range |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430756A (en) * | 2014-09-11 | 2016-03-23 | 中国移动通信集团公司 | Method of adjusting reception sensitivity and access point |
| CN113037401A (en) * | 2021-03-12 | 2021-06-25 | 上海磐启微电子有限公司 | Chip radio frequency index testing method and system with high link budget |
| CN113114301A (en) * | 2021-05-19 | 2021-07-13 | 扬州万方电子技术有限责任公司 | System and method for measuring receiver sensitivity of frequency hopping communication equipment |
| CN115021832A (en) * | 2022-06-02 | 2022-09-06 | 上海磐启微电子有限公司 | Chip communication test system with low cost and high isolation |
| CN115021832B (en) * | 2022-06-02 | 2023-12-05 | 上海磐启微电子有限公司 | Chip communication test system with low cost and high isolation |
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Application publication date: 20140226 |