CN101183128B

Movatterモバイル変換

Info

Publication number: CN101183128B
Application number: CN200710077433A
Authority: CN
Inventors: 程小冬
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-11-23
Filing date: 2007-11-23
Publication date: 2010-05-26
Anticipated expiration: 2027-11-23
Also published as: CN101183128A

Abstract

The present invention discloses a testing method and an apparatus for a diplexer power capacity. The present invention comprises the steps as follows: Step 1, a test point placed in a diplexer transition zone is selected; the insertion loss difference of the test point and a point to be tested in the zone is recorded; Step 2, the power capacity of the test point is tested; Step 3, the summation of the insertion loss difference and the power capacity tested in the step 2 is calculated and the summation is the power capacity of the point to be tested in the zone. The present invention can obtain the power capacity of the point to be tested in the zone indirectly according to the working characteristics of the diplexer, through testing the power capacity of some point in the transition zone and according to the insertion loss difference relationship between the point to be tested in the zone and the transition zone testing point. The present invention solves the troubles that a hardware input equipment (such as a power amplifier and so on) needs to be adjusted when the diplexer with high power capacity is tested. The module testing is facilitated and the testing cost is reduced at a greater extent.

Description

A kind of method of testing of duplex device power capacity and device

Technical field

The present invention relates to a kind of moving communicating field radio-frequency module measuring method and device, in particular, is a kind of method of testing and device thereof based on duplex device power capacity.

Background technology

Fast development along with mobile communication, people require more and more higher to the covering of mobile communication business signal, except arranging the relatively intensive mobile communication equipment according to the network planning, also having a kind of is exactly to reach this purpose with few mobile communication equipment of trying one's best on the basis of existing technology.So the emissive power to mobile communication equipment has had the higher requirement of ratio, thereby caused the requirement of duplex device power capacity in the mobile communication equipment also more and more highlyer, it is extremely urgent how to test the diplexer of high power capacity with a kind of fairly simple method in common.

In the diplexer test of reality, in order to test the power capacity of different diplexers, in existing method of testing, must change/adjust the hardware device of diplexer input signal during test according to the power capacity of diplexer, so not only brought very big inconvenience, increased testing cost to a greater extent to test.So, just need improve its method of testing.

Summary of the invention

In order to overcome the problem and the defective of the continuous replacing testing hardware equipment that exists in the prior art, the invention provides a kind of method of testing and device of duplex device power capacity simple general-purpose.In order to address the above problem, the present invention adopts following technical scheme.

Method of testing of the present invention may further comprise the steps: A, selection one are positioned at the test point of diplexer transitional zone, and write down this test point and the insertion loss difference of being with interior tested point; The power capacity of B, the described test point of test; C, calculate power capacity that described insertion loss difference and step B record and, itself and be exactly the power capacity of the interior tested point of described band.

Wherein, in the described steps A, be linked into respectively on the insertion loss difference testing apparatus, measure described insertion loss difference by input and output side with diplexer to be measured.Wherein, in the described steps A, select to be positioned at the test point of diplexer transitional zone according to the rated power capacity of diplexer to be measured.Wherein, in the described steps A, described test point is any point that is positioned at transitional zone, and this transitional zone is meant point (being the cut off of transitional zone) that phase place is undergone mutation and the passband band interval between outer.Wherein, in the described steps A, tested point is the Frequency point to be measured of diplexer to be measured in the described band, such as center frequency points.Wherein, among the described step B, measure power capacity by the power capacity testing apparatus.Wherein, described insertion loss difference testing apparatus is a vector network analyzer.

Adopt the device of said method, comprising: the power capacity testing apparatus is used to test the power capacity of certain point in the diplexer band; Insert the loss difference testing apparatus, be used to test and obtain in the diplexer band and the insertion loss difference of 2 of transitional zones; The input of diplexer to be tested, output terminal are connected to described power capacity testing apparatus by a switching device respectively and insert on the loss difference testing apparatus.Wherein, described switching device can adopt radio-frequency (RF) switch to be used for automaticallying switch, and perhaps, described switching device is a connecting line, is used for being connected of manual switchover diplexer to be tested and described power capacity testing apparatus and insertion loss difference testing apparatus.

Test philosophy of the present invention is exactly the operating characteristic according to diplexer, the power capacity by test transitional zone point and according to the insertion loss difference relation of tested point and transitional zone test point in the band, indirect obtain with in the power capacity of tested point.In terms of existing technologies, adopt the method for the invention and device,, select the hardware device of the excitation output of certain ability, just can satisfy the duplex device power capacity test of bigger requirement for the diplexer of test different capacity capacity.So, the present invention can reduce the requirement of diplexer when test of high power capacity to input stimulus equipment, and when testing, the diplexer that overcomes high power capacity need adjust the trouble of hardware input equipment (power amplification device etc.), make things convenient for module testing, reduced testing cost simultaneously to a greater extent.

Description of drawings

Fig. 1 is the connection diagram between the present invention's diplexer to be tested and all testing apparatuss.

Fig. 2 is to be the structure drawing of device that the diplexer of 100W is tested to power capacity in the embodiment.

Embodiment

Specifically describe each preferred embodiment of the present invention below.

As shown in Figure 1, the present invention is based on the operating characteristic of diplexer, a kind of method of indirect measurement duplex device power capacity be provided, its operation specific as follows:

The first step, the input and output side of diplexer to be measured is linked into respectively on the insertion loss difference testing apparatus, then according to the rated power capacity of diplexer, selection one is positioned at the test b point (next step tested point) of diplexer transitional zone, write down B point and the insertion loss difference X1 that is with between the build-in test A point (point that needs measurement data, i.e. any point in the passband band) again;

Second step, switch or automatic switching apparatus switches by manual, the input and output side of diplexer is linked into respectively in the power capacity testing apparatus, and the point of the B in the transitional zone is carried out the test of power capacity, the power capacity X2 that acquisition B is ordered;

The 3rd step added the power capacity X2 that second pacing gets with inserting loss difference X1, just obtained the power capacity value of ordering with build-in test A.

In the said process, tested point A point can be any point in the passband band in the described band, center frequency points as diplexer to be measured, and the B point in the transitional zone of selecting can be any point in transitional zone, just refer to the point that phase place undergos mutation (be phase place from just to negative or from negative to positive point) and the passband band outside any point, here the phase place point of undergoing mutation also refers to the cut off of transitional zone, above-mentioned insertion loss difference testing apparatus and power capacity testing apparatus can adopt the method and apparatus of prior art, as can adopting vector network analyzer to measure the insertion loss difference, and adopt by signal source, power amplifier and power meter wait and carry out the power capacity test.

Adopting said method below is that the diplexer of 100W is tested to power capacity, its hardware testing equipment is according to connection shown in Figure 2, the switching device here is a single-pole double throw RF switch, insert loss difference equipment and adopt a vector network analyzer, power amplifier and a power meter that the power capacity testing apparatus can be exported 60W by signal source, maximum are formed.

Radio-frequency (RF) switch is set earlier, and the test b point in the transitional zone is determined at the two ends that make the input and output device of diplexer to be tested receive vector network analyzer respectively, and it is X1=3dB with the insertion loss difference that will test the center frequency points A of diplexer.Then, radio-frequency (RF) switch is set, the input and output device of diplexer to be tested is received respectively in the power capacity testing apparatus, the size of conditioning signal source output signal power, come the power capacity of test b point by the reading of observing power meter, obtaining the power capacity that B orders at last is X2=55W (being converted into 47.4dBm).At last, the power capacity that the frequency A of computing center is ordered is: X2+X1=47.4+3=50.4dBm, be converted into: 109.7W has so just obtained the power capacity that A is ordered, thereby has verified that also the power capacity that A is ordered meets the demands.

As seen, the method of method of the present invention by measuring indirectly, the trouble that need change or adjust hardware testing equipment according to the power capacity of diplexer frequently of having avoided available technology adopting directly to measure and having brought has reduced the measurement cost, has a good application prospect.

In sum, the present invention also provides the proving installation of a diplexer power capacity, and as depicted in figs. 1 and 2, it mainly comprises with lower module:

The power capacity testing apparatus is used for being responsible for the power capacity of test diplexer point, and it can adopt conventional method, as shown in Figure 2, and the device of forming by signal source, power amplifier, power meter;

Insert the loss difference testing apparatus, be used for being responsible for test and obtain in the diplexer band and the insertion loss difference of 2 of transitional zones, it can carry out test points selected and insert loss difference according to the test point record.When concrete test, this equipment mainly is that (promptly just to the sudden change of bearing) selects the suitable test point that is positioned at transitional zone according to the phase change characteristics, writes down the insertion loss difference between the band build-in test point of this test point and requirement then; It can use conventional method, as Fig. 2, is made up of a vector network analyzer.

Connection between above-mentioned these two kinds of testing apparatuss can be switched by manual, as, will be connected to the cable that inserts the loss difference testing apparatus earlier and back out, terminate in the power capacity testing apparatus by the input and output of cable then diplexer; Perhaps, also can adopt automatic switching apparatus to switch, be connected on above-mentioned power capacity testing apparatus and the insertion loss difference testing apparatus by an automatic switching apparatus respectively as input, output terminal diplexer to be tested, this automatic switching apparatus can be a radio-frequency (RF) switch, such as single-pole double-throw switch (SPDT).

Illustrating of above-mentioned each concrete steps is comparatively concrete, can not therefore think the restriction to scope of patent protection of the present invention, and scope of patent protection of the present invention should be as the criterion with claims.

Claims

1. the method for testing of a duplex device power capacity is characterized in that, said method comprising the steps of:

A, selection one are positioned at the test point of diplexer transitional zone, and write down this test point and the insertion loss difference of being with interior tested point;

The power capacity of B, the described test point of test;

C, calculate power capacity that described insertion loss difference and step B record and, itself and be exactly the power capacity of the interior tested point of described band.

2. method according to claim 1 is characterized in that, in the described steps A, is linked into respectively on the insertion loss difference testing apparatus by the input and output side with diplexer to be measured, measures described insertion loss difference.

3. method according to claim 1 is characterized in that, in the described steps A, selects to be positioned at the test point of diplexer transitional zone according to the rated power capacity of diplexer to be measured.

4. method according to claim 1 is characterized in that, in the described steps A, described test point is the cut off of transitional zone.

5. method according to claim 1 is characterized in that, in the described steps A, tested point is the center frequency points of diplexer to be measured in the described band.

6. method according to claim 1 is characterized in that, among the described step B, measures power capacity by the power capacity testing apparatus.

7. method according to claim 2 is characterized in that, described insertion loss difference testing apparatus is a vector network analyzer.

8. the proving installation of a duplex device power capacity, the power capacity that it is used to measure diplexer is characterized in that, described device comprises:

The power capacity testing apparatus is used to test the power capacity of certain test point in the diplexer transitional zone;

Insert the loss difference testing apparatus, be used to test and obtain the insertion loss difference of 2 of tested points and the described test point of transitional zone in the diplexer band;

The input of diplexer to be tested, output terminal are connected to described power capacity testing apparatus by a switching device respectively and insert on the loss difference testing apparatus;

This proving installation calculate described insertion loss difference and described test point power capacity and, itself and be exactly the power capacity of tested point in the described band.

9. device according to claim 8 is characterized in that, described switching device adopts radio-frequency (RF) switch.

10. device according to claim 8 is characterized in that described switching device is a connecting line, is used for manual switchover diplexer to be tested and described power capacity testing apparatus and inserts being connected of loss difference testing apparatus.