CN1566970A - Radio-frequency testing arrangement and method for built-in antenna apparatus - Google Patents

Radio-frequency testing arrangement and method for built-in antenna apparatus Download PDF

Info

Publication number
CN1566970A
CN1566970A CNA031480020A CN03148002A CN1566970A CN 1566970 A CN1566970 A CN 1566970A CN A031480020 A CNA031480020 A CN A031480020A CN 03148002 A CN03148002 A CN 03148002A CN 1566970 A CN1566970 A CN 1566970A
Authority
CN
China
Prior art keywords
radio frequency
built
antenna
frequency socket
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA031480020A
Other languages
Chinese (zh)
Other versions
CN1271804C (en
Inventor
单文英
杨胤嗣
张福良
杨学贤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lenovo Beijing Ltd
Original Assignee
Lenovo Beijing Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lenovo Beijing Ltd filed Critical Lenovo Beijing Ltd
Priority to CNB031480020A priority Critical patent/CN1271804C/en
Publication of CN1566970A publication Critical patent/CN1566970A/en
Application granted granted Critical
Publication of CN1271804C publication Critical patent/CN1271804C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

This invention discloses a radio frequency testing apparatus with in-built antenna system and its method. The apparatus comprises radio frequency socket and its matching circuit connected with it. The radio frequency socket is connected with resistance matching network of in-built antenna and matching circuit of radio frequency socket, which is connected, with backward radio frequency output circuit. The method comprises: A, to cut off the connection between resistance matching network of in-built antenna and its backward output circuit; B, to couple the radio frequency signals of output circuit of backward radio frequency to the radio frequency probe and to send it to the testing device.

Description

A kind of radio frequency testing device of built in antenna apparatus and method
Technical field
The present invention relates to a kind of radio frequency testing technology of built in antenna apparatus, particularly a kind of radio frequency testing device of built in antenna apparatus and method.
Background technology
Since built-in aerial have the feed of being convenient to, in light weight, price is low, mobility good and to characteristics such as human body radiation are little, so built-in aerial has obtained developing rapidly and using in recent years.Increasing mobile radio terminal adopts built-in aerial work, as the client wireless network interface card of WLAN (wireless local area network), and the hand receiver in mobile phone and the GPS (GPS) etc.
In order to verify the functional parameter of built in antenna apparatus, must carry out radio frequency testing to built in antenna apparatus, built in antenna apparatus does not have external radio frequency interface usually, makes very difficult to the radio frequency testing of built in antenna apparatus like this.Existing technology is by antenna coupling system built in antenna apparatus to be carried out radio frequency testing, as shown in Figure 1, the synoptic diagram of Fig. 1 for built in antenna apparatus being tested with the antenna coupling technique, its specific descriptions are: at first select coupled antenna, the polarization mode of this coupled antenna must be identical with the equipment under test antenna, determine the placement location of coupled antenna then, selection is to the strongest position of equipment under test aerial radiation, the last test instrument carries out radio frequency testing by coupled antenna to built in antenna apparatus to be measured and obtains measurement result, with the coupling coefficient of the antenna of measuring, compensate this measurement result simultaneously.
Adopt the antenna coupling technique that built in antenna apparatus is tested, exist many indefinite factors, as: the selection of coupled antenna, the placement location of coupled antenna and the measurement of coupling coefficient etc., these factors all exist influence to the radio frequency testing of built in antenna apparatus.Environment is especially serious to the influence of testing built in antenna apparatus with the antenna coupling technique, as: the radio wave attenuation that may occur in the external environment, refraction or multipath effect etc., this all can reduce radio frequency testing precision and radio frequency testing efficient greatly.
Summary of the invention
In view of this, one aspect of the present invention provides a kind of radio frequency testing device of built in antenna apparatus, and this device has been realized directly testing built in antenna apparatus with the radiofrequency signal probe.
The present invention provides a kind of radio frequency test method of built in antenna apparatus on the other hand, and this method has been removed the influence of environment to the radio frequency testing built in antenna apparatus, has improved the precision and the radio frequency testing efficient of radio frequency testing built-in aerial.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
A kind of radio frequency testing device of built in antenna apparatus, be connected between the impedance matching network and back level rf output circuit of built-in aerial, this device also comprises the match circuit of radio frequency socket and the radio frequency socket that is connected with radio frequency socket, radio frequency socket connects the impedance matching network of built-in aerial and the match circuit of radio frequency socket, and the match circuit of radio frequency socket connects back level rf output circuit.
Described radio frequency socket is the radio frequency socket of belt switch.
This device also comprises a shell, and this shell is provided with instrument connection and the test stopple is set on instrument connection in the position of inserting for the radiofrequency signal probe.
The insertion loss of described radio frequency socket is less than 0.5dB, and voltage standing wave ratio (VSWR) is less than 1.5.
The matching network of described radio frequency socket is made up of electric capacity.
The radio frequency test method of built in antenna apparatus, this method comprises:
A, cut off the impedance matching network of built-in aerial and being connected between grade rf output circuit thereafter by radio frequency socket;
B, the radiofrequency signal that back level rf output circuit is exported are directly coupled on the radiofrequency signal probe, are input on the testing tool again.
Described steps A further comprises:
The radio frequency socket that places open mode is arranged between the impedance matching network and back level rf output circuit of built-in aerial, and the matching network of radio frequency socket is set between radio frequency socket and back level rf output circuit.
The present invention has added a radio frequency socket on the radio signal transmission path of built in antenna apparatus, when testing the radiofrequency signal of built in antenna apparatus, being connected between the built-in aerial that cuts off built in antenna apparatus and the radio frequency signal transmission line, the radiofrequency signal probe being inserted radio frequency socket finish test radiofrequency signal.Device and method provided by the invention has not only realized directly testing with the radiofrequency signal probe radiofrequency signal of built in antenna apparatus, and avoided the influence of environment to the radio frequency testing built in antenna apparatus, improved the precision and the radio frequency testing efficient of radio frequency testing built-in aerial.
Description of drawings
The synoptic diagram of Fig. 1 for built in antenna apparatus being tested with the antenna coupling technique.
Fig. 2 is the radio frequency testing device of built in antenna apparatus of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
As shown in Figure 2, Fig. 2 is the radio frequency testing device of built in antenna apparatus of the present invention, this device comprises: add the matching network of radio frequency socket and radio frequency socket between built-in aerial impedance matching network on the radio signal transmission path and back level rf output circuit, the radiofrequency signal probe can insert radio frequency socket built in antenna apparatus is carried out radio frequency testing.
The radio frequency socket of radio frequency socket select tape switch, when the radiofrequency signal probe inserts radio frequency socket, this radio frequency socket switch, back level rf output circuit and built-in aerial matching network are disconnected, radiofrequency signal in the level rf output circuit of back outputs in the testing apparatus by rf probe, and testing apparatus is finished the radio-frequency measurement to built in antenna apparatus.
Reduce added losses in order to reach, the insertion loss of radio frequency socket is less than 0.5dB, and voltage standing wave ratio (VSWR) is less than 1.5.
In order to guarantee the impedance matching of built in antenna apparatus, the choice of location of this radio frequency socket promptly is chosen in the end of 50 ohm of radio frequency signal transmission line after the built-in aerial impedance matching network.
In order further to guarantee the impedance matching of built in antenna apparatus, the present invention also provides the matching network of radio frequency socket, and this matching network can be electric capacity.
The present invention adopts network analyzer, matching network to radio frequency socket is regulated, the Microwave Net S11 maximum that the feasible matching network that adds radio frequency socket and radio frequency socket is formed, the S21 minimum, wherein, S11 and S21 are the characterising parameter of Microwave Net, promptly when the port match between Microwave Net and the back level rf output circuit, require the port reflection coefficient S11 maximum between the impedance matching circuit of Microwave Net and antenna; When the port match between the impedance matching circuit of Microwave Net and antenna, require port transmission coefficient S 21 maximums between Microwave Net and the back level rf output circuit.
When the matching network of radio frequency socket is electric capacity, adopt network analyzer that the position of this electric capacity, the size of value are adjusted, satisfy the matching network requirement of radio frequency socket.When this electric capacity being carried out the position adjustment, near the 2mm of whenever being separated by radio frequency socket usually stays a position, and electric capacity is placed into respectively on each position, tests; When this capacitance being carried out the size adjustment, capacitance is selected 0,0.5pf, 1.0pf, four values of 1.5pf are tested; At last, the electric capacity of selecting to have desired positions and optimum value is determined this matching network.
According to the particular location of radio frequency socket, the invention provides a kind of shell, this shell is reserved instrument connection and the test stopple is set on instrument connection in the position that radio frequency socket inserts for the radiofrequency signal probe, and the size of this instrument connection and test probe matches.When built in antenna apparatus is tested, open the test stopple, test probe is inserted radio frequency socket by this instrument connection, built in antenna apparatus is carried out radio frequency testing; When built in antenna apparatus not being tested, close the test stopple, keep the complete of this built in antenna apparatus outward appearance.
The radio frequency test method of built in antenna apparatus provided by the invention is as described below:
Step 1 is inserted the radiofrequency signal probe in the radio frequency socket;
Step 2, with the impedance matching network and the back level rf output circuit cut-out of built-in aerial, the method for this cut-out can realize by the switch of closing radio frequency socket;
Step 3, radiofrequency signal are directly coupled on the radiofrequency signal probe, and are input on the testing tool by the radiofrequency signal probe, reach the radiofrequency signal test to built in antenna apparatus.
Because radiofrequency signal by external environment, has been avoided having improved radio frequency testing precision and radio frequency testing efficient because of radio wave attenuation, refraction or the multipath effect etc. that may occur in the external environment influence to signal testing when being coupled on the radiofrequency signal probe.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1, a kind of radio frequency testing device of built in antenna apparatus, be connected between the impedance matching network and back level rf output circuit of built-in aerial, it is characterized in that, this device also comprises the match circuit of radio frequency socket and the radio frequency socket that is connected with radio frequency socket, radio frequency socket connects the impedance matching network of built-in aerial and the match circuit of radio frequency socket, and the match circuit of radio frequency socket connects back level rf output circuit.
2, device as claimed in claim 1 is characterized in that, described radio frequency socket is the radio frequency socket of belt switch.
3, device as claimed in claim 1 is characterized in that, this device also comprises a shell, and this shell is provided with instrument connection and the test stopple is set on instrument connection in the position of inserting for the radiofrequency signal probe.
4, device as claimed in claim 1 is characterized in that, the insertion loss of described radio frequency socket is less than 0.5dB, and voltage standing wave ratio (VSWR) is less than 1.5.
5, device as claimed in claim 1 is characterized in that, the matching network of described radio frequency socket is the composition of electric capacity.
6, a kind of radio frequency test method that utilizes the built in antenna apparatus of claim 1 device is characterized in that this method comprises:
A, cut off the impedance matching network of built-in aerial and being connected between grade rf output circuit thereafter by radio frequency socket;
B, the radiofrequency signal that back level rf output circuit is exported are directly coupled on the radiofrequency signal probe, are input on the testing tool again.
7, method as claimed in claim 6 is characterized in that, described steps A further comprises:
The radio frequency socket that places open mode is arranged between the impedance matching network and back level rf output circuit of built-in aerial, and the matching network of radio frequency socket is set between radio frequency socket and back level rf output circuit.
CNB031480020A 2003-06-26 2003-06-26 Radio-frequency testing arrangement and method for built-in antenna apparatus Expired - Fee Related CN1271804C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031480020A CN1271804C (en) 2003-06-26 2003-06-26 Radio-frequency testing arrangement and method for built-in antenna apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031480020A CN1271804C (en) 2003-06-26 2003-06-26 Radio-frequency testing arrangement and method for built-in antenna apparatus

Publications (2)

Publication Number Publication Date
CN1566970A true CN1566970A (en) 2005-01-19
CN1271804C CN1271804C (en) 2006-08-23

Family

ID=34472139

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031480020A Expired - Fee Related CN1271804C (en) 2003-06-26 2003-06-26 Radio-frequency testing arrangement and method for built-in antenna apparatus

Country Status (1)

Country Link
CN (1) CN1271804C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101740855A (en) * 2010-01-28 2010-06-16 福建三元达软件有限公司 Method for collaboratively designing and mounting antenna
CN101321023B (en) * 2008-07-18 2011-08-24 华为终端有限公司 Method for testing mobile phone antenna performance and test device
CN101488813B (en) * 2008-01-18 2012-08-08 启碁科技股份有限公司 Test system for adjusting wireless communication device by impedance load characteristic
CN103293403A (en) * 2012-02-29 2013-09-11 比亚迪股份有限公司 Method for debugging signal transduction and antenna
CN103634062A (en) * 2013-12-24 2014-03-12 深圳市双赢伟业科技股份有限公司 Wireless performance testing method for wireless products
TWI456210B (en) * 2010-04-01 2014-10-11 Chi Mei Comm Systems Inc Portable electronic device with a radio frequency connector
CN105025139A (en) * 2014-04-30 2015-11-04 中兴通讯股份有限公司 Radio frequency test bench and radio frequency test cable
CN105100308A (en) * 2015-06-26 2015-11-25 努比亚技术有限公司 Mobile terminal and test method therefor
CN105738738A (en) * 2016-02-25 2016-07-06 广东欧珀移动通信有限公司 Radio frequency test device and system
CN106301611A (en) * 2015-05-15 2017-01-04 神讯电脑(昆山)有限公司 Antenna set-point and the method for searching of noise spot
CN107748298A (en) * 2017-10-13 2018-03-02 环旭电子股份有限公司 Test device with built-in testing antenna

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101488813B (en) * 2008-01-18 2012-08-08 启碁科技股份有限公司 Test system for adjusting wireless communication device by impedance load characteristic
CN101321023B (en) * 2008-07-18 2011-08-24 华为终端有限公司 Method for testing mobile phone antenna performance and test device
CN101740855A (en) * 2010-01-28 2010-06-16 福建三元达软件有限公司 Method for collaboratively designing and mounting antenna
CN101740855B (en) * 2010-01-28 2014-01-08 福建三元达软件有限公司 Method for collaboratively designing and mounting antenna
TWI456210B (en) * 2010-04-01 2014-10-11 Chi Mei Comm Systems Inc Portable electronic device with a radio frequency connector
CN103293403B (en) * 2012-02-29 2015-08-26 比亚迪股份有限公司 The adjustment method of a kind of intracellular signaling and antenna
CN103293403A (en) * 2012-02-29 2013-09-11 比亚迪股份有限公司 Method for debugging signal transduction and antenna
CN103634062A (en) * 2013-12-24 2014-03-12 深圳市双赢伟业科技股份有限公司 Wireless performance testing method for wireless products
US10168355B2 (en) 2014-04-30 2019-01-01 Zte Corporation Radio frequency test socket and radio frequency test cable
CN105025139A (en) * 2014-04-30 2015-11-04 中兴通讯股份有限公司 Radio frequency test bench and radio frequency test cable
CN105025139B (en) * 2014-04-30 2019-04-12 中兴通讯股份有限公司 A kind of radio frequency testing seat and radio frequency testing cable
WO2015165194A1 (en) * 2014-04-30 2015-11-05 中兴通讯股份有限公司 Radio frequency test socket and radio frequency test cable
CN106301611A (en) * 2015-05-15 2017-01-04 神讯电脑(昆山)有限公司 Antenna set-point and the method for searching of noise spot
CN106301611B (en) * 2015-05-15 2019-06-25 神讯电脑(昆山)有限公司 The method for searching of antenna set-point and noise spot
CN105100308A (en) * 2015-06-26 2015-11-25 努比亚技术有限公司 Mobile terminal and test method therefor
CN105738738A (en) * 2016-02-25 2016-07-06 广东欧珀移动通信有限公司 Radio frequency test device and system
CN107748298A (en) * 2017-10-13 2018-03-02 环旭电子股份有限公司 Test device with built-in testing antenna
US10481190B2 (en) 2017-10-13 2019-11-19 Universal Scientific Industrial (Shanghai) Co., Ltd. Test device with a built-in test antenna

Also Published As

Publication number Publication date
CN1271804C (en) 2006-08-23

Similar Documents

Publication Publication Date Title
CN1271804C (en) Radio-frequency testing arrangement and method for built-in antenna apparatus
US20070200766A1 (en) Adaptively tunable antennas and method of operation therefore
US20090284431A1 (en) Integrated electronics matching circuit at an antenna feed point for establishing wide bandwidth, low vswr operation, and method of design
US8947113B2 (en) Methods for modeling tunable radio-frequency elements
JP2000502865A (en) Antenna adapter
CA2771815A1 (en) Hybrid reflectometer system (hrs)
EP1310014B1 (en) Wireless terminal
WO2006090550A1 (en) Method for measuring dielectric constant of transmission line material and method for measuring electric characteristic of electronic component using the dielectric constant measuring method
JP2001085911A (en) Antenna coupler
TW526333B (en) Over-the-air coupler for RF device testing
US6259930B1 (en) Portable telephone antenna circuit with reduced susceptibility to human body and method for realizing the same
Allen et al. Optimal lossy matching by Pareto fronts
CN1459886A (en) Microstrip double frequency band aerial
Rogers et al. Two-port model of an antenna for use in characterizing wireless communications systems, obtained using efficiency measurements
CN108258416B (en) Dual-frequency broadband patch circularly polarized antenna
CN107682022A (en) A kind of adjusting method of mobile terminal and antenna matching network
EP2043193B1 (en) A directional coupler and a method thereof
Underhill et al. Simple circuit model of small tuned loop antenna including observable environmental effects
KR100953119B1 (en) Design and measurement method of a broadband active dipole antenna using the equivalent port and equivalent impedance circuit
US20020146988A1 (en) Wireless terminal
Chen Compact circular microstrip antenna with embedded chip resistor and capacitor
Liang et al. A Novel Single PIN Diode Reconfigurable Impedance Matching Network with a Simplified Solution Method
Flint Numerical analysis of detuning in printed inverted F antennas for bluetooth applications
Al et al. Measurement and verification of complex permeability of ferrite material by S-parameter techniques
Breetz A Circularly Polarized Yagi Antenna System for NTS-1 and NTS-2 Ground Stations

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060823

Termination date: 20100626