CN101217322A - A test system and test method on aerial performance of wireless USB modem - Google Patents
A test system and test method on aerial performance of wireless USB modem Download PDFInfo
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- CN101217322A CN101217322A CNA2008100045276A CN200810004527A CN101217322A CN 101217322 A CN101217322 A CN 101217322A CN A2008100045276 A CNA2008100045276 A CN A2008100045276A CN 200810004527 A CN200810004527 A CN 200810004527A CN 101217322 A CN101217322 A CN 101217322A
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Abstract
The invention provides a system for testing the aerial performance of a wireless USB modem and comprises a darkroom, a rotating floor that is arranged in the darkroom, a testing antenna and a computer, wherein, the wireless USB modem is connected with the started computer through a USB wire, and the computer is fixed in the top end of a rotating shaft that is vertical to a plane of the rotating floor; the USB modem is arranged in a proper position of the darkroom for implementing the great circle test of the USB modem. The invention further provides a method for testing the aerial performance of the wireless USB modem. Therefore, the invention can better utilize an OTA testing darkroom of existing cellphones, the hardware system of the rotating floor and the software system, and a three-dimensional directivity diagram and TRP and TIS data which are acquired from the testing can reflect the radiation and receiving characteristics of the antenna.
Description
Technical field
The present invention relates to a kind of Wireless USB Modem airborne performance testing apparatus and method, relate in particular to USB Modem aerial (Over The Air, OTA) test of performance in the field of wireless communication.
Background technology
Along with the development of the second generation (2G) and the third generation (3G) wireless communication system, the ability of wireless data service high-speed transfer improves constantly.Wireless USB Modem is one of wireless communication terminal product, use the USB line to link on notebook computer or the desktop computer, carry out high speed data transfer by cordless communication network, as global system for mobile communications (Global Systemfor Mobile communications, abbreviate GSM as) under GPRS (General Packet Radio Service, abbreviate GPRS as), enhancing GPRS (Enhanced GPRS under the GSM, abbreviate EGPRS as), Wideband Code Division Multiple Access (WCDMA) under the 3G communication system (Wideband Code Division Multiple Access, abbreviating WCDMA as) high speed downlink packet introduced of network inserts (High Speed DownlinkPacket Access, abbreviate HSDPA as) technology, make the user not have optical fiber, coaxial cable, the Internet network also can freely be browsed in the place of telephone wire or remote area, the high-speed downloads data, carry out operations such as voice call.Wherein, the HSDPA technology, theoretical maximum downstream speed is 14.4M/s.Like this, by the interfaces for external devices such as notebook PC of standard, Wireless USB Modem can provide data service, speech business and short message service for the user; By install software at random is installed on notebook, the user can finish network installation and the surfing on the net of Modem; By being installed in the user interface of PC side application software, the user can call, and the transmitting-receiving note, Modem is set and obtains the state information of wireless connections.Fig. 1 is the application schematic block diagram of whole system.
As mobile communication needs antenna, during Wireless USB Modem work, also must and receive the space electromagnetic wave by day alignment space radiation electromagnetic wave, send received signal, thus swap data and information.But because the custom of the environment that Wireless USB Modem uses, user's use etc. are different, the performance requirement of antenna also can have different places with antenna for mobile phone with method of testing.
For mobile phone, how to test and assess the problem of mobile phone antenna performance, the people was just arranged in research, as European scientific and technological cooperation research center (EuropeanCooperation in the field of Scientific and Technical research abbreviates COST as) [1] as far back as 1998.In the past few years, through mobile phone production firm, darkroom manufacturer, the research of university research center and standardization body and summary, aerial (the Over-The-Air that the Cellular Telecommunicationand Internet Association of international organization (CTIA) proposes, abbreviate OTA as) method of testing and standard [2], it mainly is the influence of the concatenation ability of checking wireless device and network and terminal user to radiation and receptivity, carry out the test of radiant power and receiving sensitivity two aspects, be total radiant power (TRP) and total omnidirectional sensitivity (TIS), test is divided at free space (Free-space) and has under the headform (SAM HeadPhantom) to be carried out.Wherein, the implication of TRP be the space all receive the summation of terminal radiant power, surface integral just, and test can not be got infinite point in practice, to carry out the test point sampling to test sphere satisfying under certain measuring accuracy and test speed require.CTIA OTA standard code, the angle intervals of TRP spatial sampling point are taken as 15 degree.Similarly, standard code, the angle intervals of TIS spatial sampling point is taken as 30 degree, because each spatial sampling point testing time of TIS is longer than the TRP spatial point testing time.At present, microwave dark room and two kinds of structures of testboard existence of being used for the OTA test: (1) big circule method and (2) awl cutting method [2].Their essence is the same, and when difference was exactly scanning angle, big circule method was that to measure antenna motionless, and object under test is the sampled point on scan position angle φ and the angle of site θ successively, and Fig. 2 is the structural representation of big circule method; The awl cutting method is object under test along azimuth φ scanning, measures antenna along angle of site θ sampling, as shown in Figure 3, wherein, will hang down the reflection supporting construction as θ shaft mechanical scanning support or a plurality of test antennas are installed, and single probe test macro and many probe systems are arranged.Many probe systems are that the sampling interval that a plurality of measurement antennas are fixed when designing the darkroom in advance evenly is fixed on the θ tangent plane, advantage is that test speed can be accelerated greatly, and shortcoming is that the difficulty of calibration increases, test interval can not arbitrarily be changed with software.Well-known in the world cell phone manufacturer and operator have all stipulated TRP and TIS requirement that mobile phone need reach according to the method for CTIA OTA standard code; Darkroom production firm is also according to this standard, release the OTA test macro, build hardware facilities such as darkroom framework and turret plant, making software control hardware system carries out three-dimensional sampled point test, and calculate TRP, TIS, carry out three-dimensional figure and show, as darkroom producers such as ETS Lindgren, Satimo, Howland.
For Wireless USB Modem antenna, owing to also do not have unified OTA test specification and standard in the communications industry, and the USB Modem that does not have self-contained battery must link to be put into together on the notebook computer and tests in the darkroom, therefore, the test meeting of the darkroom framework of the test of USB Modem airborne performance, test and method of testing and mobile phone airborne performance is variant.Simultaneously, when the user uses USB Modem, be to connect with USB to be put on desk or the workbench, rather than hand or dial and answer, do not need to test the situation under the SAMHead Phantom near the number of people.Therefore, in Wireless USB Modem, the problem that needs to solve is that the OTA that utilizes existing mobile phone airborne performance test macro and condition to carry out under the free space (Free-space) tests, and scientifically assesses the antenna performance of product.
Summary of the invention
Consider the problems referred to above and make the present invention that for this reason, main purpose of the present invention is, a kind of test macro and method of testing of wireless USB modem airborne performance is provided.
According to an aspect of the present invention, a kind of test macro of wireless USB modem airborne performance is provided, comprise the darkroom, and be arranged on turntable, test antenna and computer in the darkroom, wherein, wireless USB modem is connected with the computer of opening by the USB line, and computer is fixed on the rotating shaft top vertical with the plane of turntable; USB Modem is placed on the appropriate location in darkroom USB Modem is carried out big circule method test.
USB Modem can be placed on the intersection point of the φ shaft centre line in darkroom and turntable center line, is in same level height with test antenna.
Computer can be a notebook computer.
The display of notebook computer and keyboard plane are at an angle.
According to a further aspect in the invention, provide a kind of method of testing of wireless USB modem airborne performance, it may further comprise the steps:
Step S202, the value of testing a plurality of three dimensions sampled points of USB Modem by the big circule method of test macro utilization; And
Step S204 calculates the total radiant power and the total omnidirectional sensitivity of USB Modem according to the value of measured a plurality of three dimensions sampled points.
Step S202 can comprise: it is motionless to measure antenna, and USB Modem is a plurality of three dimensions sampled points on scan position angle φ and the angle of site θ successively.
The interval of calculating between the required a plurality of three dimensions sampled points of total radiant power can be 15 degree.
The interval of calculating between the required a plurality of three dimensions sampled points of total omnidirectional sensitivity can be 30 degree.
Pass through technique scheme, user experience nuclear mobile phone radiation receptivity when test result can reflect actual use and field testing, thereby better utilization existing mobile phone OTA test darkroom and turntable hardware system and software systems, three-dimensional figure, TRP that test obtains and the data of TIS also can reflect the radiation and the receiving feature of antenna.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram that USB Modem is used in the prior art;
Fig. 2 shows in the prior art structural representation by big circule method testing mobile phone;
Fig. 3 shows in the prior art by boring the structural representation of cutting method testing mobile phone;
Fig. 4 shows the schematic diagram according to the test macro of wireless USB modem airborne performance of the present invention; And
Fig. 5 shows the flow chart according to the method for testing of wireless USB modem airborne performance of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
With reference to Fig. 4, a kind of test macro of wireless USB modem airborne performance is provided, comprise the darkroom, and be arranged on turntable 2, test antenna 4 and computer 1 in the darkroom, wherein, wireless USB modem 6 is connected with the computer of opening 1 by USB line 5, and computer 1 is fixed on the rotating shaft vertical with the plane of turntable 23 tops; USB Modem 6 is placed on the appropriate location in darkroom USB Modem is carried out big circule method test.
Computer 1 is a notebook computer.
The display of notebook computer 1 and keyboard plane are at an angle.
More specifically, with notebook computer 1 start, lcd screen is opened with the keyboard of notebook computer plane to become as 120 degree angles, and notebook computer 1 is placed on rotating shaft 3 tops that stand vertically with big turntable plane, bottom surface 2 and fixes, and height is suitable with test antenna 4.Be connected on the USB Modem 6 to be measured with USB line 5, the position of USB Modem 6 is identical with the position of mobile phone test placement in the big circule method structure of CTIA OTA standard, soon USB Modem 6 is placed on the intersection point of φ-shaft centre line 7 and turntable center line 8, be in same level height with test antenna 4, as shown in Figure 4.According to mobile phone CTIA OTA method of testing, test out the value of the three dimensions sampled point of USB Modem then, calculate TRP, TIS.Similar, the angle intervals of TRP and TIS spatial sampling point also can be taken as 15 degree and 30 degree.
With reference to Fig. 5, a kind of method of testing of wireless USB modem airborne performance is provided, it may further comprise the steps:
Step S202, the value of testing a plurality of three dimensions sampled points of USB Modem by the big circule method of test macro utilization; And
Step S204 calculates the total radiant power and the total omnidirectional sensitivity of USB Modem according to the value of measured a plurality of three dimensions sampled points.
Step S202 comprises: it is motionless to measure antenna, and USB Modem is a plurality of three dimensions sampled points on scan position angle φ and the angle of site θ successively.
Calculate 15 degree that are spaced apart between the required a plurality of three dimensions sampled points of total radiant power.
Calculate 30 degree that are spaced apart between the required a plurality of three dimensions sampled points of total omnidirectional sensitivity.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the test macro of a wireless USB modem airborne performance comprises the darkroom, and is arranged on turntable, test antenna and computer in the described darkroom, it is characterized in that,
Described wireless USB modem is connected with the described computer of opening by the USB line, and described computer is fixed on the rotating shaft top vertical with the plane of described turntable; Described USB Modem is placed on the appropriate location in described darkroom described USB Modem is carried out big circule method test.
2. test macro according to claim 1 is characterized in that, described USB Modem is placed on the intersection point of the φ shaft centre line in described darkroom and described turntable center line, is in same level height with described test antenna.
3. test macro according to claim 2 is characterized in that described computer is a notebook computer.
4. test macro according to claim 3 is characterized in that, the display of described notebook computer and keyboard plane are at an angle.
One kind require by aforesaid right in each described test macro test the method for wireless USB modem airborne performance, it is characterized in that, may further comprise the steps:
Step S202, the value of testing a plurality of three dimensions sampled points of described USB Modem by the big circule method of described test macro utilization; And
Step S204 calculates the total radiant power and the total omnidirectional sensitivity of described USB Modem according to the value of measured described a plurality of three dimensions sampled points.
6. method according to claim 5 is characterized in that, described step S202 comprises:
The measurement antenna is motionless, and described USB Modem is the described a plurality of three dimensions sampled points on scan position angle φ and the angle of site θ successively.
7. method according to claim 6 is characterized in that, calculates 15 degree that are spaced apart between the required described a plurality of three dimensions sampled points of described total radiant power.
8. method according to claim 6 is characterized in that, calculates 30 degree that are spaced apart between the required described a plurality of three dimensions sampled points of described total omnidirectional sensitivity.
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| CNA2008100045276A CN101217322A (en) | 2008-01-16 | 2008-01-16 | A test system and test method on aerial performance of wireless USB modem |
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| WO2010075753A1 (en) * | 2008-12-30 | 2010-07-08 | 中国广东省深圳市 | Method and system for testing receiving sensitivity performance |
| CN101409625B (en) * | 2008-11-26 | 2010-12-08 | 杭州华三通信技术有限公司 | Method and apparatus for initializing USB interface modem |
| CN102088323A (en) * | 2011-01-20 | 2011-06-08 | 中兴通讯股份有限公司 | Testing device and method of wireless communication terminal |
| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | ***通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| CN102244549A (en) * | 2011-08-17 | 2011-11-16 | 惠州Tcl移动通信有限公司 | TIS (Total Isotropic Sensitivity) test method of WCDMA (Wideband Code Division Multiple Access) mobile terminal |
| CN102404056A (en) * | 2010-09-16 | 2012-04-04 | 中兴通讯股份有限公司 | Method and device for testing spatial radio-frequency performance of wireless communication product |
| WO2012058890A1 (en) * | 2010-11-05 | 2012-05-10 | 中兴通讯股份有限公司 | Test system for total radiated power of data card |
| CN101459477B (en) * | 2008-12-28 | 2012-07-04 | 中国电子科技集团公司第四十一研究所 | Automatic test method for mobile phone antenna radiation performance |
| CN101692630B (en) * | 2009-09-30 | 2012-08-22 | 航天东方红卫星有限公司 | Sensitivity testing method of spaceborne wireless receiving system under complex electromagnetic environment |
| WO2012129869A1 (en) * | 2011-03-28 | 2012-10-04 | 中兴通讯股份有限公司 | System and method for testing receiving sensitivity of data terminal |
| CN102833017A (en) * | 2012-08-21 | 2012-12-19 | 北京众谱达科技有限公司 | Quick test method for omnidirectional radiation power of mobile phone |
| CN103927289A (en) * | 2014-04-23 | 2014-07-16 | 上海微小卫星工程中心 | Method for determining preliminary orbit of low-orbit target satellite according to space-based satellite angle measurement data |
| CN105207724A (en) * | 2014-06-30 | 2015-12-30 | 国家电网公司 | Electricity consumption information acquisition system local communication unit intelligence test system |
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| CN109617627A (en) * | 2018-11-21 | 2019-04-12 | 天津七六四通信导航技术有限公司 | A kind of detection device for sampling |
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| CN101409625B (en) * | 2008-11-26 | 2010-12-08 | 杭州华三通信技术有限公司 | Method and apparatus for initializing USB interface modem |
| CN101459477B (en) * | 2008-12-28 | 2012-07-04 | 中国电子科技集团公司第四十一研究所 | Automatic test method for mobile phone antenna radiation performance |
| WO2010075753A1 (en) * | 2008-12-30 | 2010-07-08 | 中国广东省深圳市 | Method and system for testing receiving sensitivity performance |
| CN101692630B (en) * | 2009-09-30 | 2012-08-22 | 航天东方红卫星有限公司 | Sensitivity testing method of spaceborne wireless receiving system under complex electromagnetic environment |
| CN102237934A (en) * | 2010-04-26 | 2011-11-09 | ***通信集团公司 | Test method of terminal data transmission performance, system and apparatus thereof |
| CN102404056A (en) * | 2010-09-16 | 2012-04-04 | 中兴通讯股份有限公司 | Method and device for testing spatial radio-frequency performance of wireless communication product |
| WO2012058890A1 (en) * | 2010-11-05 | 2012-05-10 | 中兴通讯股份有限公司 | Test system for total radiated power of data card |
| CN102468887A (en) * | 2010-11-05 | 2012-05-23 | 中兴通讯股份有限公司 | Test system of total radiated power (TRP) of data card |
| WO2012097573A1 (en) * | 2011-01-20 | 2012-07-26 | 中兴通讯股份有限公司 | Testing device and method of wireless communication terminal |
| CN102088323A (en) * | 2011-01-20 | 2011-06-08 | 中兴通讯股份有限公司 | Testing device and method of wireless communication terminal |
| WO2012129869A1 (en) * | 2011-03-28 | 2012-10-04 | 中兴通讯股份有限公司 | System and method for testing receiving sensitivity of data terminal |
| CN102244549B (en) * | 2011-08-17 | 2015-08-19 | 惠州Tcl移动通信有限公司 | A kind of TIS method of testing of WCDMA mobile terminal |
| CN102244549A (en) * | 2011-08-17 | 2011-11-16 | 惠州Tcl移动通信有限公司 | TIS (Total Isotropic Sensitivity) test method of WCDMA (Wideband Code Division Multiple Access) mobile terminal |
| WO2013023546A1 (en) * | 2011-08-17 | 2013-02-21 | 惠州Tcl移动通信有限公司 | Wcdma mobile terminal tis test method |
| CN102833017A (en) * | 2012-08-21 | 2012-12-19 | 北京众谱达科技有限公司 | Quick test method for omnidirectional radiation power of mobile phone |
| CN102833017B (en) * | 2012-08-21 | 2014-09-03 | 北京众谱达科技有限公司 | Quick test method for omnidirectional radiation power of mobile phone |
| CN103902821B (en) * | 2014-03-27 | 2017-01-04 | 西安空间无线电技术研究所 | A kind of obtain the method for antenna radiation pattern under antenna difference attitude |
| CN103927289A (en) * | 2014-04-23 | 2014-07-16 | 上海微小卫星工程中心 | Method for determining preliminary orbit of low-orbit target satellite according to space-based satellite angle measurement data |
| CN103927289B (en) * | 2014-04-23 | 2017-06-27 | 上海微小卫星工程中心 | A kind of method for determining low rail target satellite preliminary orbit according to space-based satellite Angle Measured Data |
| CN105207724A (en) * | 2014-06-30 | 2015-12-30 | 国家电网公司 | Electricity consumption information acquisition system local communication unit intelligence test system |
| CN109617627A (en) * | 2018-11-21 | 2019-04-12 | 天津七六四通信导航技术有限公司 | A kind of detection device for sampling |
| CN111211846A (en) * | 2018-11-22 | 2020-05-29 | 深圳市通用测试***有限公司 | Test system of wireless terminal |
| CN111212177A (en) * | 2018-11-22 | 2020-05-29 | 深圳市通用测试***有限公司 | Test system of wireless terminal |
| CN111212177B (en) * | 2018-11-22 | 2021-06-25 | 深圳市通用测试***有限公司 | Test system of wireless terminal |
| CN111211846B (en) * | 2018-11-22 | 2022-05-17 | 深圳市通用测试***有限公司 | Test system of wireless terminal |
| CN112394234A (en) * | 2019-08-16 | 2021-02-23 | 稜研科技股份有限公司 | Quick aerial production line test platform |
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Application publication date: 20080709 |