The content of the invention
Embodiments of the invention provide a kind of method and system and wireless terminal of antenna measurement, can reduce antenna
The false failure rate of test.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that:
First aspect, there is provided a kind of method of antenna measurement, applied to wireless terminal, the wireless terminal includes antenna,
Characterized in that, the wireless terminal also includes test circuit, one end of the test circuit electrically connects the antenna, the other end
The test equipment outside the wireless terminal is electrically connected, methods described includes:
The test circuit receives the test signal that the test equipment is sent, and the test signal is transferred to described
Antenna;
The test circuit is received as antenna-reflected reflected signal corresponding with the test signal, and by described in
Reflected signal is transferred to the test equipment, so that the test equipment determines according to the test signal and the reflected signal
The parameter of the antenna.
With reference in a first aspect, in the first possible implementation of first aspect, the passband of the test circuit
Outside the working band of the antenna, the frequency of the test signal is the frequency outside the working band of the antenna.
With reference to the first possible implementation of first aspect, in second of possible implementation of first aspect
In, the test circuit includes high pass circuit, low pass circuit, with any one in resistance circuit.
With reference to second of any possible implementation of the first of first aspect or first aspect to first aspect,
In the third possible implementation of first aspect, the parameter includes at least one following parameter:Return loss, voltage are stayed
Bob.
Second aspect, there is provided a kind of wireless terminal, the wireless terminal include antenna, and the wireless terminal also includes test
Circuit, one end electrical connection antenna of the test circuit, the other end electrically connect the test equipment outside the wireless terminal;
The test circuit, the test signal for receiving and sending the test equipment are transferred to the antenna;
The antenna, for receiving the test signal, and reflect reflected signal corresponding with the test signal;
The test circuit is additionally operable to:Receive and the reflected signal of the antenna is transferred to the test equipment, so that
The test equipment determines the parameter of the antenna according to the test signal and the reflected signal.
With reference to second aspect, in the first possible implementation of second aspect, the passband of the test circuit
Outside the working band of the antenna, the frequency of the test signal is the frequency outside the working band of the antenna.
With reference to the first possible implementation of second aspect, in second of possible implementation of second aspect
In, the test circuit includes high pass circuit, low pass circuit, with any one in resistance circuit.
With reference to second of possible implementation of second aspect, in the third possible implementation of second aspect
In, the test circuit includes at least one set of test circuit, and the antenna is an at least antenna, the test circuit with it is described
Antenna corresponds, and outside the working band of antenna of the passband of the test circuit corresponding to it;
The test circuit, the test signal for receiving and sending the test equipment are transferred to corresponding antenna;
The antenna, for receiving the test signal, and reflect reflected signal corresponding with the test signal;
The test circuit is additionally operable to:Receive and the reflected signal of corresponding antenna is transferred to the test equipment, with
The test equipment is set to determine the parameter of the antenna according to the test signal and the reflected signal.
With reference to second of possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the test circuit is an adjustable test circuit of passband, and the antenna is more antennas;
The test circuit, the test signal for receiving and sending the test equipment are transferred to antenna to be measured, institute
Antenna to be measured is stated as the current antenna tested in the more antennas;
The antenna to be measured, for receiving the test signal, and reflect reflected signal corresponding with the test signal;
The test circuit is additionally operable to:Receive and the reflected signal of the antenna to be measured be transferred to the test equipment,
So that the test equipment determines the parameter of the antenna according to the test signal and the reflected signal;
Wherein, the passband adjustment of the test circuit is outside the working band of the antenna to be measured.
With reference to the first of second aspect or second aspect to the 4th kind of any possible implementation, in second aspect
In 5th kind of possible implementation, the wireless terminal also includes interface, for electrically connecting the test circuit and the survey
Try equipment.
The third aspect, there is provided a kind of system of antenna measurement, including wireless terminal and test equipment, the wireless terminal bag
Antenna is included, the wireless terminal also includes test circuit, and one end of the test circuit electrically connects the antenna, and the other end is electrically connected
Connect the test equipment;
The test equipment sends test signal;
The test circuit receives and the test signal is transferred into the antenna;
The antenna receives the test signal, and reflects reflected signal corresponding with the test signal;
The test circuit receives and the reflected signal is transferred into the test equipment;
The test equipment receives the reflected signal and according to determining the test signal and the reflected signal
The parameter of antenna.
With reference to the third aspect, in the first possible implementation of the third aspect, the passband of the test circuit
Outside the working band of the antenna, the frequency of the test signal is the frequency outside the working band of the antenna.
With reference to the first possible implementation of the third aspect, in second of possible implementation of the third aspect
In, the system also includes tuning circuit, and one end of the tuning circuit electrically connects the test circuit, other end electrical connection institute
State test equipment;
The tuning circuit is used for:Optimize the reflected signal.
The method and system and wireless terminal of the antenna measurement provided according to embodiments of the present invention, antenna are received by surveying
The test signal that examination equipment is sent via test circuit, it is then, the antenna-reflected is corresponding with the test signal anti-
Penetrate signal and be sent to the test equipment via identical test circuit.So, the test equipment can be according to the test
Signal determines the parameter of the antenna with the reflected signal, so as to realize antenna measurement.Compared to need in the prior art by
Wireless terminal, which is placed in test environment, is tested and is required that the position that antenna is placed in test environment is very accurate, according to this
The method that the antenna measurement provided is provided, antenna measurement dexterously can be carried out using the test circuit inside wireless terminal, from
And can avoid because false failure rate is high caused by test condition requires the reason such as harshness the problem of, therefore, it is possible to reduce antenna measurement
False failure rate.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in Figure 1A, the embodiment of the present invention one provides a kind of wireless terminal 10, wireless terminal 10 include antenna 11 and
Test circuit 12.Wherein, test circuit 12 is arranged on inside wireless terminal 10, one end electrical connection antenna 11 of test circuit 12,
Test equipment 30 outside other end electrical connection wireless terminal 10.Led specifically, one end of test circuit 12 can for example utilize
Electrical connection of the line directly with antenna 11, the electrical connection of coupler and antenna 11 can also be used.Test equipment 30 for example may be used
Think Network Analyzer or other can measure antenna parameter (such as return loss, voltage standing wave ratio etc.) equipment.Need
Illustrate, one end of above-mentioned test circuit 12 and the specific connected mode of antenna 11, and test equipment 30 is network analysis
Instrument is merely illustrative, and any restrictions are not done to the present invention.
During antenna measurement, test circuit 12 is used to receive the test signal that test equipment 30 is sent, and by institute
State test signal and be transferred to antenna 11;Antenna 11 is used for the test signal for receiving the transmission of test circuit 12, and reflects and the survey
Reflected signal corresponding to trial signal;Test circuit 12 is additionally operable to the reflected signal of the reflection of reception antenna 11, and the reflection is believed
Number test equipment 30 is transferred to, so that test equipment 30 determines the ginseng of antenna 11 according to the test signal and the reflected signal
Number.
Wherein it is preferred to the passband of test circuit 12, outside the working band of antenna 11, the test signal is frequency
Electric signal of the rate in the passband of test circuit 12, that is, the test signal be frequency antenna 11 working band it
Outer electric signal.By setting the passband of test circuit 12 outside the working band of antenna 11, inside wireless terminal 10
The signal that radio-frequency module 15 (reference picture 1B, 1C) is sent can not enter test equipment, can prevent radio-frequency module from influenceing antenna 11
Test, moreover, can also prevent test circuit 12 influence radio-frequency module 15 normal work.
In order to realize the passband of test circuit 12 outside the working band of antenna 11, test circuit 12 can be high pass
Circuit, low pass circuit, with any one in resistance circuit.
In the present embodiment, the printed circuit board (PCB) (Printed Circuit Board, PCB) in wireless terminal 10 is passed through
Upper progress circuit and cabling handle to obtain test circuit 12, so that antenna 11 can receive the test of outside via test circuit 12
The test signal that equipment 30 is sent.In impedance mismatch, antenna 11 can not all absorb the high frequency transmitted in test circuit 12
Energy, unabsorbed part energy will reflect back to form back wave in test circuit 12, i.e., described reflected signal.Survey
Examination equipment 30 determines the parameter of the antenna 11 according to the test signal and the reflected signal:Return loss (return
) or voltage standing wave ratio (Voltage Standing Wave Ratio, VSWR) loss.Certainly, test equipment 30 can also be simultaneously
Determine return loss and voltage standing wave ratio.According to the parameter of antenna 11, it check that whether the performance of antenna 11 is qualified, enter
And strictly control antenna supplied materials.
It should be noted that in order to avoid circuit (including test circuit 12) and day between test equipment 30 and antenna 11
Reflected signal problems of too caused by the mismatch of line 11, the circuit between test equipment 30 and antenna 11 need to be suitably debugged, such as adjusted
Examination is reserved in close to the match circuit (part for belonging to test circuit 12) of external interface on PCB, also, controls test equipment
Circuit impedance between 30 and antenna 11 with and to control the radio frequency line impedence on PCB printed circuit board (PCB)s 10 be equal so that surveying
Antenna high frequency characteristics waveform is can show that in examination equipment 30.
In the wireless terminal that the present embodiment provides, test circuit is used to receive the test signal sent by test equipment simultaneously
The test signal is sent to antenna;Antenna is used to receive the test signal and reflects reflection letter corresponding with the test signal
Number;The reflected signal of antenna is also transferred to test equipment by test circuit.So, the test equipment can be according to described
Test signal determines the parameter of the antenna with the reflected signal, so as to realize antenna measurement.Compared to needing in the prior art
Wireless terminal is placed in test environment and is tested and required the very accurate of the position that antenna is placed in test environment,
According to wireless terminal provided by the invention, antenna measurement dexterously can be carried out using the test circuit inside wireless terminal, from
And can avoid because false failure rate is high caused by test condition requires the reason such as harshness the problem of, therefore, it is possible to reduce antenna measurement
False failure rate.
In the wireless terminal 10 that embodiment one provides, antenna 11 is not limited to one, can include more;Test circuit 12
One is also not necessarily limited to, can be included multiple.Wherein, antenna and test circuit can correspond or more antennas pair
Answer a test circuit.Below, with reference to Figure 1B to Fig. 1 D, the facilities of antenna and test circuit are illustrated, and below
Using antenna 11 it is two antennas 111 and antenna 112 as entering in case of setting terminal to include more antennas in embodiment
Row explanation.Although in the explanation of following examples so that test circuit 12 is high pass circuit 13 as an example, those skilled in the art
Low pass circuit can also be used or replace high pass circuit 13 with resistance circuit and obtain other embodiments.
As shown in Figure 1B, in a variant embodiment of embodiment one, two antennas 111 and antenna 112 correspond to two respectively
Individual test circuit, wherein, test circuit is high pass circuit 13, and the passband of high pass circuit 13 with its corresponding to antenna work
It is corresponding to make frequency band.
During antenna measurement, by taking antenna 111 as an example, high pass circuit 13 (i.e. the high pass circuit in left side in Figure 1B) is used for
The test signal for receiving and sending test equipment 30 is transferred to corresponding antenna 111;Antenna 111 is used to receive the test letter
Number, and reflect reflected signal corresponding with the test signal;High pass circuit 13 is additionally operable to:Receive and by corresponding antenna 111
Reflected signal be transferred to test equipment 30 so that test equipment 30 determines day according to the test signal and the reflected signal
The parameter of line 111.The test process of antenna 112 can directly obtain according to the test process of antenna 111.
As shown in Figure 1 C, in another variant embodiment of embodiment one, two antennas 111 and antenna 112 are corresponding one
Test circuit, wherein, test circuit is high pass circuit 13a, and high pass circuit 13a is the adjustable high pass circuit of passband.
During antenna measurement, using antenna 111 as antenna to be measured exemplified by, high pass circuit 13a be used for receive and will survey
The test signal that examination equipment 30 is sent is transferred to antenna 111;Antenna 111 is used to receive the test signal, and reflect with it is described
Reflected signal corresponding to test signal;High pass circuit 13a is additionally operable to:Receive and the reflected signal of antenna 111 is transferred to test
Equipment 30, so that test equipment 30 determines the parameter of antenna 111 according to the test signal and the reflected signal.Wherein, it is high
Circuit passband 13a passband adjustment is outside the working band of antenna 111.Similarly, when testing antenna 112, high pass circuit
13a passband can be adjusted outside the working band of antenna 112.
In the embodiment shown in Figure 1B and Fig. 1 C, by set high pass circuit 13 or the 13a test signals with
The reflected signal can be by high pass circuit 13 or 13a, also, the radio-frequency module 15 of wireless terminal 10 itself (such as is sent out
Penetrate machine) can not be by high pass circuit 13 or 13a to the input signal of the transmission of antenna 11.Therefore, by setting high pass circuit so that
Radio-frequency module 15 does not influence the test of antenna, moreover, high pass circuit nor affects on radio-frequency module 15 normal work of itself.
As shown in figure iD, on the basis of any of the above-described embodiment, the another variant embodiment of the embodiment of the present invention one carries
The wireless terminal 10 of confession also includes interface 14, for electrically connecting the test circuit 12 and test equipment 30.
Specifically, when carrying out circuit and cabling processing on the pcb, the interface 14 of wireless terminal 10 is dexterously utilized
(such as USB (Universal Serial Bus, USB) interface), can be by test circuit 12 and test equipment 30
Connect.These, it is preferred to it is used as interface 14 by the use of existing interface in wireless terminal 10.Therefore, in test antenna 11
When, only it need to utilize the connecting test equipment 30 of interface 14, you can carry out antenna measurement.It can be seen that the assembling process of Antenna testing system
It is very simple, it is easy to improve the efficiency of antenna measurement.
As shown in Fig. 2 the embodiment of the present invention two provides a kind of method of antenna measurement, applied to above-described embodiment one and its
The wireless terminal that variant embodiment provides, the wireless terminal include antenna, and the wireless terminal also includes test circuit, described
One end of test circuit electrically connects the antenna, and the other end electrically connects the test equipment outside the wireless terminal, methods described
Including:
Step 21, test circuit receive the test signal that test equipment is sent, and test signal is transferred into antenna.
When starting test, tester can operate test equipment and send test signal.Due to the test electricity in wireless terminal
The one end on road electrically connects with test equipment, therefore test circuit can receive the test signal that the test equipment is sent.And due to
The other end of test circuit electrically connects with the antenna in wireless terminal, therefore test circuit can pass the test signal received
The antenna being defeated by wireless terminal.So, antenna can be received via the test circuit and sent by the test equipment
Test signal.
Step 22, test circuit are received as antenna-reflected reflected signal corresponding with test signal, and by reflected signal
Test equipment is transferred to, so that test equipment determines the parameter of antenna according to test signal and reflected signal.
In this step, antenna is after the test signal that test equipment is sent is received, on the one hand, with the shape of electromagnetic wave
Formula outwards gives off energy, on the other hand, reflects reflection corresponding with test signal in test circuit in the form of back wave
Signal.The reflected signal for the test circuit reception antenna that one end electrically connects with antenna, and it is another that the reflected signal is transferred into circuit
The test equipment of one end.So, test equipment can receive antenna reflected signal and according to the test signal with it is described
Reflected signal determines the parameter of antenna.The parameter includes at least one of return loss, voltage standing wave ratio.
Because wireless terminal and its antenna need not be placed in test environment, therefore, during antenna detection, to test
The requirement of environment and measuring accuracy is not harsh.So, wireless terminal to be measured can not only be avoided to be placed in test environment
Judged by accident caused by the human factors such as position is improper, improve first-pass yield, and, it is possible to increase testing efficiency or even production efficiency.
In step 21 and step 22, it is preferable that can set the frequency of test signal test circuit passband it
It is interior, and set test circuit passband the working band of the antenna and its corresponding radio-frequency module (such as emitter) it
Outside, thus test signal can be by test circuit, and the signal that the radio-frequency module is sent to antenna can not be by testing electricity
Road.For example, worked in the radio-frequency module, i.e., in the case that described radio-frequency module sends input signal to the antenna, due to
The frequency of the input signal is not in the passband of the test circuit, therefore the input signal can not be via the test
Circuit is sent to the test equipment.So, interference of the radio-frequency module to antenna measurement can either be prevented, and can prevents from surveying
Examination circuit impacts to the normal work of radio-frequency module and antenna.
Further, in order to realize the passband of test circuit outside the working band of antenna, test circuit can be
High pass circuit, low pass circuit, with any one in resistance circuit.
The method of the antenna measurement provided according to embodiments of the present invention, test circuit receive the survey that the test equipment is sent
Trial signal, and the test signal is transferred to antenna;The test signal is received in antenna and is launched and the test signal pair
After the reflected signal answered, test circuit receives and the reflected signal is transferred into the test equipment.So, the test is set
The standby parameter that the antenna can be determined according to the test signal and the reflected signal, so as to realize antenna measurement.Compare
Tested and required that antenna is placed in test environment in needing wireless terminal being placed in test environment in the prior art
Position is very accurate, according to the method for antenna measurement provided by the invention, can dexterously utilize the test inside wireless terminal
Circuit carries out antenna measurement, so as to avoid because false failure rate is high caused by test condition requires the reason such as harshness the problem of, because
This, can reduce the false failure rate of antenna measurement.
As shown in Figure 1A, the embodiment of the present invention three provides a kind of system of antenna measurement, and the system includes wireless terminal
10 and test equipment 30, the wireless terminal 10 include antenna 11 and test circuit 12.One end electrical connection day of test circuit 12
Line 11, other end electrical connection test equipment 30.Wireless terminal 10 can be the wireless terminal of any of the above-described embodiment.
The process that the system carries out antenna measurement is as follows:
Test equipment 30 sends test signal;
Test circuit 12 receives and the test signal is transferred into antenna 11;
Antenna 11 receives the test signal, and reflects reflected signal corresponding with the test signal;
Test circuit 12 receives and the reflected signal is transferred into test equipment 30;
Test equipment 30 receives the reflected signal and determines antenna 11 according to the test signal and the reflected signal
Parameter.
Test circuit 12 can be high pass circuit, low pass circuit, with any one in resistance circuit.Preferably, test electricity
The passband on road 12 is outside the working band of antenna 11, and the frequency of test signal is the frequency outside the working band of antenna 11
Rate.
As seen from the above, tested compared to needing wireless terminal being placed in test environment in the prior art and
It is required that the position that antenna is placed in test environment is very accurate, according to the system of antenna measurement provided by the invention, by nothing
Line terminal inner sets test circuit to connect the test equipment outside antenna and wireless terminal to carry out antenna measurement, can avoid
Because false failure rate is high caused by test condition requires the reason such as harshness the problem of, therefore, it is possible to reduce the false failure rate of antenna measurement.
As shown in figure 3, in the variant embodiment of the embodiment of the present invention three, the system of the antenna measurement also includes tuning
Circuit, one end electrical connection test circuit 12 of the tuning circuit 31, other end electrical connection test equipment 30;Tuning circuit 31 is used
In:Optimize the reflected signal.Using by tuning circuit 31 optimization after reflected signal, when test equipment 30 is tested
The detection waveform of display screen display thereon becomes more preferable, therefore test equipment 30 can determine the higher antenna of precision
Parameter.
As shown in figure 4, the embodiment of the present invention four is the specific embodiment of the embodiment of the present invention three and its variant embodiment,
In system shown in Fig. 4, wireless terminal 10 is electrically connected by interface 14 with tuning circuit 31, and tuning circuit 31 passes through coaxial cable
41 electrically connect with test equipment 30, the general purpose interface bus of test equipment 30 (General Purpose Interface Bus,
GPIB) 43 electrically connected with computer 42.In the present embodiment, interface 14 is by taking usb 14 as an example, and test equipment 30 is with network point
Exemplified by analyzer 30.
In wireless terminal 10, on pin of the test circuit 12 by PCB trace to usb 14, usb 14 is utilized
Pin serve as the bridge of the transfer of antenna 11, when the reflected signal of antenna 111 (or antenna 112) reaches USB by PCB impedance lines
After interface 14, using the waveform of higher order resonances caused by antenna 111 (or antenna 112) itself, finally on Network Analyzer 30
It has been shown that, carry out the measurement of such as return loss or voltage standing wave ratio index.
Computer 42 reads the return loss of Network Analyzer 30 or the number of voltage standing wave ratio by general purpose interface bus 43
Value, and judge that the numerical value whether in the range of setting, adjudicates the uniformity of antenna performance so as to fast and stable,
Reach the purpose of detection antenna.Tested and wanted compared to needing wireless terminal being placed in test environment in the prior art
The position for asking antenna to be placed in test environment is very accurate, according to the system of antenna measurement provided by the invention, can avoid because
Test condition requires the problem of false failure rates caused by reason such as harshness are high, therefore, it is possible to reduce the false failure rate of antenna measurement.
As seen from the above, because using antenna passive detection scheme, (test signal is set by the test outside wireless terminal
Preparation goes out), relative to prior art, using antenna active detection scheme, (test signal is sent out by the radio-frequency module inside wireless terminal
Go out), the workload of software can be reduced, without for going to write corresponding AT orders per a product.Moreover, from whole operation mistake
Come from the point of view of, from insertion USB, start AT orders, to from the point of view of the cycle of program end of run, detection time obtains relative to prior art
To being significantly reduced, therefore production efficiency can be improved.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.