CN104967494B - A kind of test method, equipment and system - Google Patents

A kind of test method, equipment and system Download PDF

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Publication number
CN104967494B
CN104967494B CN201510217446.4A CN201510217446A CN104967494B CN 104967494 B CN104967494 B CN 104967494B CN 201510217446 A CN201510217446 A CN 201510217446A CN 104967494 B CN104967494 B CN 104967494B
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signal
test
power
port
module
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CN201510217446.4A
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CN104967494A (en
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王东波
谢树民
屈鹏
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华为技术有限公司
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Abstract

The embodiment of the invention discloses a kind of test method, equipment and system, test method of the embodiment of the present invention is used for the intermodulation product for testing each test port of multi-system combiner, and multi-system combiner includes M test port, including:Test equipment exports the combining signal of predetermined power to M test port on multi-system combiner respectively, so that each test port returns to intermodulation product in M test port;Test equipment obtains the intermodulation product that target detection port returns on multi-system combiner;The intensity for the intermodulation product that test equipment returns to the corresponding test port of target detection module measures, to determine the intermodulation suppression degree for the corresponding test port of target detection module being connected.The embodiment of the present invention makes the test of multi-system combiner closer to reality, and can measure any test port of multi-system combiner, and without replacing test equipment, make the test of multiple ports simpler, efficient.

Description

A kind of test method, equipment and system

Technical field

The present invention relates to field of communication technology, more particularly to a kind of test method, equipment and system.

Background technology

Passive intermodulation (Passive InterModulation, PIM) is that passive device produces, when there are one in device During carrier frequency more than a, due to device non-linear in itself, many new frequency components, i.e. passive intermodulation production can be produced Thing.

With the development of wireless technology, frequency is higher and higher, and system is more and more, in order to realize multi-operator, multisystem Joint construction and sharing, multisystem mixing device and multi-system access platform (Point of Interface, POI) are widely used in indoor distribution System.

Multi-system combiner is by the radiofrequency signal of multiple frequency ranges, multiple systems, is inputted respectively by different ports, A kind of radio frequency combining equipment of one or more mixed signal is exported after combining.Each end inbound port of multi-system combiner When inputting corresponding radiofrequency signal, intermodulation product can be produced in each input terminal, while signal is passing through between different input ports Also intermodulation product can be produced when crossing multi-system combiner, the uplink that some input system is fallen into when these intermodulation products works frequently During band, it is possible to the system is disturbed, influences the normal work of system, multi-system combiner is located at the room subsystem first order, The quality of its intermodulation performance influences wireless network performance maximum, therefore eliminates intermodulation product to take measures, and combining is set The test of standby input terminal intermodulation product becomes necessity.

At present, the intermodulation product test equipment tested the intermodulation product of multi-system combiner input port is main Take two ways:A kind of is to produce carrier signal of the two-way with frequency range different frequency by passive cross modulation test instrument, to polyphyly The input port input combining signal of integration pipeline equipment, tests the intermodulation product of input port return;Another kind is logical Cross passive cross modulation test instrument and produce carrier signal of the two-way with frequency range different frequency, to an input terminal of multi-system combiner Mouth input combining signal, in the intermodulation product that another defeated place's port test exports.

Due to hardware limitation, in such scheme, different frequency range intermodulation, which measures, needs different passive cross modulation test instrument, when passive After intermodulation testing instrument transmitting frequency range is fixed, passive cross modulation test instrument receives frequency range and is also fixed in the system reception band limits It is interior, meanwhile, for multi-system combiner, since there are multiport multicarrier while input carrier signal, intermodulation product Middle interference signal frequency component number combinations will be very numerous, these frequency components are required for measuring, and only measure one Port can not complete the intermodulation product measurement between multiple ports, and the input port of multi-system combiner, output port are all Intermodulation product may be exported, the prior art can not simulate combination intermodulation product numerical value when all of the port while input signal, no Upstream noise variable quantity after the main equipment access of energy actual response multisystem influences, and has significant limitations.

The content of the invention

An embodiment of the present invention provides a kind of test method, equipment and system, the test of multi-system combiner is more pasted It is near actual, and any test port of multi-system combiner can be measured, and without replacing test equipment, make multiple ports Test it is simpler.

First aspect of the embodiment of the present invention provides a kind of test equipment, for testing multi-system combiner test port Intermodulation product, the multi-system combiner includes M test port, and the test equipment includes spectrum measuring device and N A test module, N >=M >=2 and the N and M are integer;

M test module in N number of test module is used for and the M test port is man-to-man is connected;

It is defeated to be used for the corresponding test port into the M test port for each test module in the M test module Go out combining signal, so that each test port corresponding test module into the M test module in the M test port Intermodulation product is returned to, there is the combining signal frequency of predetermined power and the combining signal to be located in default frequency range;

The spectrum measuring device is used to be connected with a test module in the M test module, and to being connected The intensity of intermodulation product that returns of the corresponding test port of the test module measure, to determine the survey being connected The intermodulation suppression degree of the corresponding test port of die trial block.

With reference to the embodiment of the present invention in a first aspect, the first implementation of the first aspect in the embodiment of the present invention In, the M test module includes the first at least one test module;

The first described test module includes the first passive module, the first signal source, the first power amplifier, secondary signal Source and the second power amplifier;

The output terminal of first signal source is connected with the input terminal of first power amplifier, first power The output terminal of amplifier is connected with the first input end of first passive module;

The output terminal in the secondary signal source is connected with the input terminal of second power amplifier, second power The output terminal of amplifier is connected with the second input terminal of first passive module;

First signal source is used to send the first simple signal, the first single-frequency letter to first power amplifier Number frequency be in the first default frequency range;

First power amplifier is used to receive first simple signal, and first simple signal is amplified Processing, so that the power of first simple signal is identical with the predetermined power, and by by described in power amplification processing First simple signal is exported to first passive module;

The secondary signal source is used to send the second simple signal, the second single-frequency letter to second power amplifier Number frequency be in the described first default frequency range, the frequency of the frequency of first simple signal and second simple signal It is different;

Second power amplifier is used to receive second simple signal, and second simple signal is amplified Processing, so that the power of second simple signal is identical with the predetermined power, and by by described in power amplification processing Second simple signal is exported to first passive module;

First passive module is used to close first simple signal of reception and second simple signal Road is handled, to obtain the first combining signal;

First passive module is additionally operable into the multi-system combiner be connected with first passive module Test port export the first combining signal, so as to be connected in the multi-system combiner with first passive module Logical test port returns to the first intermodulation product, and when first passive module is connected with the spectrum measuring device, First intermodulation product received to spectrum measuring device output.

With reference to the first implementation of the first aspect of the embodiment of the present invention, in the first aspect of the embodiment of the present invention In second of implementation, first passive module is additionally operable to respectively to first single-frequency in the first combining signal Signal, second simple signal carry out power measurement, obtain the first actual power and described the of first simple signal Second actual power of two simple signals;

In the case of first actual power and the predetermined power are different, first power amplifier is also used In carrying out power amplification processing to first simple signal, so that first actual power is identical with the predetermined power;

In the case of second actual power and the predetermined power are different, second power amplifier is also used In carrying out power amplification processing to second simple signal, so that second actual power is identical with the predetermined power.

With reference to the first way of the first aspect of the embodiment of the present invention or second of implementation of first aspect, at this In the third implementation of the first aspect of inventive embodiments,

First passive module includes 3dB electric bridges, the first load, the first coupler and first duplexer;

The first input port of the 3dB electric bridges connects first power amplifier, the second input of the 3dB electric bridges Port connects second power amplifier;First output port of the 3dB electric bridges is connected with the described first load, described Second output port of 3dB electric bridges connects the first port of first coupler;

The second port of first coupler connects the emission port of the first duplexer;The first duplexer Public port is used to be connected with a test port of the multi-system combiner, and the receiving port of the first duplexer is used It is connected in the spectrum measuring device;3rd port of first coupler is power measurement interface;

The 3dB electric bridges are used to first simple signal and second simple signal being combined processing, obtain First two-tone signal and the second two-tone signal, first two-tone signal are inputted by the first output port of the 3dB electric bridges To the described first load, second two-tone signal is output to first coupling by the second output port of the 3dB electric bridges Clutch;

First load is used to carry out power absorption to first two-tone signal of reception;

First coupler is used to carry out weak signal extraction to second two-tone signal of reception, and that is extracted is weak Signal and the first combining signal, the weak signal of extraction is exported from the power measurement interface, single to measure described first Second actual power of the first actual power of frequency signal and second simple signal, wherein, the weak signal of the extraction is Preset ratio component in second two-tone signal;

First coupler is additionally operable to the first combining signal output to the first duplexer;

The first duplexer is used to export the first combining signal to the test port of connection, and receives connection First intermodulation product that test port returns;

The first duplexer is additionally operable to the spectrum measuring device be connected in the receiving port of the first duplexer When logical, to first intermodulation product of spectrum measuring device output reception.

With reference to the first implementation of the first aspect of the embodiment of the present invention or second of implementation of first aspect, In the 4th kind of implementation of the first aspect of the embodiment of the present invention,

First passive module includes pilot frequency combiner, the second coupler and the second duplexer;

The pilot frequency combiner includes first input port, the second input port, output port, the pilot frequency combiner First input port connects first power amplifier, and second input port connects second power amplifier;Institute The output port for stating pilot frequency combiner connects the first port of second coupler;

The second port of second coupler connects the emission port of second duplexer;Second duplexer Public port is used to be connected with a test port of the multi-system combiner, and the receiving port of second duplexer is used It is connected in the spectrum measuring device, the 3rd port of second coupler is power measurement interface;

The pilot frequency combiner is used to first simple signal and second simple signal being combined processing, obtains To the 3rd two-tone signal, and it is output to second coupler;

Second coupler is used to carry out weak signal extraction from the 3rd two-tone signal of reception, and that is extracted is weak Signal and the first combining signal, the weak signal of the extraction is exported from the power measurement interface, to measure described Second actual power of the first actual power of one simple signal and second simple signal, wherein, the weak letter of the extraction Number be the 3rd two-tone signal preset ratio component;

First coupler is additionally operable to the first combining signal output to second duplexer;

Second duplexer is used to export the first combining signal to the test port of connection, and receives connection First intermodulation product that test port returns, in receiving port and the spectrum measuring device phase of second duplexer During connection, to first intermodulation product of spectrum measuring device output reception.

With reference to the third implementation of the first aspect of the embodiment of the present invention or the 4th kind of implementation of first aspect, In the 5th kind of implementation of the first aspect of the embodiment of the present invention,

Power measurement module, the power measurement module and the power measurement are further included in the first described test module Interface connects, and the power measurement module is used to carry out power measurement to the signal received from the power measurement interface.

With reference to the third implementation of the first aspect of the embodiment of the present invention or the 4th kind of implementation of first aspect, In the 6th kind of implementation of the first aspect of the embodiment of the present invention,

The test equipment further includes power measurement module, and the power measurement module is used for and the first survey described in one The die trial power measurement interface in the block is connected, and power measurement is carried out to the signal received from the power measurement interface, To measure the second actual power of the first actual power of first simple signal and second simple signal.

With reference to the 6th kind of implementation of the first aspect of the embodiment of the present invention, in the first aspect of the embodiment of the present invention In 7th kind of implementation, the power measurement module is the spectrum measuring device.

With reference to the embodiment of the present invention in a first aspect, the first implementation of first aspect, second of first aspect Implementation, the third implementation of first aspect, the 4th kind of implementation of first aspect, the 5th kind of reality of first aspect Existing mode, the 6th kind of implementation of first aspect, the 7th kind of implementation of first aspect, the first of the embodiment of the present invention In 8th kind of implementation of aspect,

The test equipment further includes switching device;

Each test module is connected with the switching device in the M test module, the switching device and institute Spectrum measuring device is stated to be connected;

The switching device is used to make at target detection module and the spectrum measuring device in the M test module In conducting state, and other test modules in the M test module are made to be off state with the spectrum measuring device, So that the intensity for the intermodulation product that the spectrum measuring device returns to the corresponding test port of target detection module measures, To determine the intermodulation suppression degree for the corresponding test port of the test module being connected;Wherein, other described test modules are Refer to the test module in addition to the target detection module in the M test module.

With reference to the embodiment of the present invention in a first aspect, the first implementation of first aspect, second of first aspect Implementation, the third implementation of first aspect, the 4th kind of implementation of first aspect, the 5th kind of reality of first aspect Existing mode, the 6th kind of implementation of first aspect, the 7th kind of implementation of first aspect, the 8th kind of realization of first aspect Mode, in the 9th kind of implementation of the first aspect of the embodiment of the present invention, the spectrum measuring device is frequency spectrograph.

The second aspect of the embodiment of the present invention provides a kind of test system, including test equipment, multi-system combiner With low intermodulation power absorption module, the multi-system combiner includes M test port and K output port, K≤M and K, M is positive integer;Wherein, the test equipment is the test equipment as described in any in first aspect;

The output interface of M test module in N number of test module with the M test port is man-to-man is connected Logical, the K output port is connected with the low intermodulation power absorption module respectively;

The low inter-modulated signal power module is used for the superfluous signal energy for absorbing the multi-system combiner output.

The third aspect of the embodiment of the present invention provides a kind of test method, is respectively tested for testing multi-system combiner The intermodulation product of port, the multi-system combiner include M test port, and M >=2 and M are integer, the described method includes:

Test equipment exports combining signal respectively to M test port on the multi-system combiner, so that the M Each test port returns to intermodulation product in a test port, and the combining signal has predetermined power and the combining signal Frequency is located in default frequency range;

The test equipment obtains the intermodulation product that target detection port returns on the multi-system combiner, the mesh It is any one in the M test port to mark test port;

The intensity for the intermodulation product that the test equipment returns to the target detection port measures, described to determine The intermodulation suppression degree of target detection port.

With reference to the third aspect of the embodiment of the present invention, in the first implementation of the third aspect of the embodiment of the present invention In, the test equipment exports combining signal respectively to M test port on the multi-system combiner, including:

To each test port in M test port, the test equipment exports two-way simple signal:First simple signal With the second simple signal, the frequency of the frequency of first simple signal and second simple signal is in same default frequency Section and frequency difference;

The test equipment carries out power amplification processing to first simple signal and second simple signal respectively, So that the power of first simple signal by power amplification processing is identical with the predetermined power, and put through overpower The power of second simple signal handled greatly is identical with the predetermined power;

The test equipment is to first simple signal by power amplification processing and by power amplification processing Second simple signal is combined processing, obtains and exports combining signal;

Wherein, the test equipment is in the frequency of the combining signal that each test port is sent in M test port The default frequency range of difference.

With reference to the first implementation of the third aspect of the embodiment of the present invention, in the third aspect of the embodiment of the present invention In second of implementation,

The test equipment carries out power amplification processing to first simple signal and second simple signal respectively, So that the power of first simple signal by power amplification processing is identical with the predetermined power, and put through overpower The power of second simple signal handled greatly is identical with the predetermined power, including:

The test equipment carries out work(to first simple signal in the combining signal, second simple signal Rate measures, and obtains the first actual power of first simple signal and the second actual power of second simple signal;

In the case of first actual power and the predetermined power are different, the test equipment is to described first Simple signal carries out power amplification processing, so that first actual power is identical with the predetermined power;

In the case of second actual power and the predetermined power are different, institute's test equipment is to described second Simple signal carries out power amplification processing, so that second actual power is identical with the predetermined power.

With reference to second of implementation of the third aspect of the embodiment of the present invention, in the third aspect of the embodiment of the present invention In the third implementation,

The test equipment carries out work(to first simple signal in the combining signal, second simple signal Rate measures, and obtains the first actual power of first simple signal and the second actual power of second simple signal, wraps Include:

First simple signal and second simple signal are combined by the test equipment, obtain double-tone letter Number;

The test equipment carries out weak signal extraction, the weak signal extracted and combining to the obtained two-tone signal Signal, the weak signal of the extraction are the preset ratio component of the two-tone signal;

The test equipment carries out power measurement to the weak signal of the extraction, to determine the of first simple signal Second actual power of one actual power and second simple signal.

As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:

In the embodiment of the present invention, test equipment can be corresponded with the M test port to be connected, respectively to be measured The combining signal that multi-system combiner sends predetermined power is tried, any one in the M test module can be tested The intensity of the intermodulation product of module output measures, and can measure any test port of multi-system combiner, and does not have to Test equipment is replaced, makes the test of multiple ports simpler, simultaneously because the test port of multi-system combiner all inputs Combining signal all the way, simulate multi-system combiner each input port at the same time input signal when scene, test is more pasted It is near actual.

Brief description of the drawings

Fig. 1 is one embodiment schematic diagram of test equipment in the embodiment of the present invention;

Fig. 2 is multi-system combiner a port test intermodulation product schematic diagram;

Fig. 3 is another embodiment schematic diagram of test equipment in the embodiment of the present invention;

Fig. 4 is that one embodiment of the first passive module in the first test module of test equipment in the embodiment of the present invention is shown It is intended to;

Fig. 5 is another embodiment of the first passive module in the first test module of test equipment in the embodiment of the present invention Schematic diagram;

Fig. 6 is another embodiment schematic diagram of test equipment in the embodiment of the present invention;

Fig. 7 is another embodiment schematic diagram of test equipment in the embodiment of the present invention;

Fig. 8 is another embodiment schematic diagram of test equipment in the embodiment of the present invention;

Fig. 9 is switch matrix schematic diagram in the embodiment of the present invention;

Figure 10 is one embodiment schematic diagram that system is tested in the embodiment of the present invention;

Figure 11 is one embodiment schematic diagram of test method in the embodiment of the present invention.

Embodiment

An embodiment of the present invention provides a kind of test method, equipment and system, simulates multi-system combiner and respectively inputs Scene when port while input signal, makes test closer to reality, and can measure any survey of multi-system combiner Port is tried, and without replacing test equipment, make the test of multiple ports simpler, efficient.

In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects Enclose.

Term " first ", " second " in description and claims of this specification and above-mentioned attached drawing etc. are (if deposited ) it is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use Data can exchange in the appropriate case, so that the embodiments described herein can be with except the content for illustrating or describing herein Order in addition is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover non-exclusive Comprising being not necessarily limited to clearly list for example, containing the process of series of steps or unit, method, system, product or equipment Those steps or unit, but may include not listing clearly or intrinsic for these processes, method, product or equipment Other steps or unit.

To facilitate understanding of the present embodiment of the invention, introduced first at this embodiment of the present invention description in can introduce it is several will Element;

Intermodulation:

Intermodulation (IM, InterModulation) refers to when two or more frequency signals pass through with nonlinear characteristic Caused by device and original signal has and the radiofrequency signal of poor relation, also known as intermodulation product, intermodulation or intermodulation product.In order to be lifted Power system capacity, the phenomenon in communication system at the same time using multiple carrier waves (frequency point) is very universal, and carrier power also has gradually The trend of increasing;Usually all possesses non-linear behavior in view of actual circuit, intermodulation and Intermodulation Interference become common phenomenon, in bee The systems such as cellular mobile communication system, microwave telecommunication system, trunked mobile communication system, satellite communication system, ship communication system, It is found in the systems such as civil aviaton's communication system, cable television system and causes extensive attention.

Intermodulation is broken generally into active mutually two kinds of passive intermodulation of reconciliation, in view of the order of severity of produced intermodulation product, tradition Upper people are primarily upon active intermodulation, but with the application of more high-power transmitter and the continuous improvement of receiver sensitivity, nothing The system interference getting worse that source intermodulation produces, thus it is more and more of interest by operator, system manufacturer and device manufacturer. Passive intermodulation (Passive InterModulation, PIM) is that passive device produces, when there are more than one in device During carrier frequency, due to device non-linear in itself, many new frequency components, i.e. passive intermodulation product can be produced.

Passive intermodulation is specifically divided into two kinds of sides of positive intermodulation (Forward IM) and reverse intermodulation (Reverse IM) again Formula, wherein intermodulation (Transfer IM) is also known as transmitted in positive intermodulation, intermodulation (Reflection is also known as reflected in reverse intermodulation IM)。

Indoor distributed system:Indoor distributed system is for indoor user group, for improving mobile communication ring in building A kind of successful scheme in border, is that the signal of mobile base station is uniformly distributed each angle indoors using domestic aerial compartment system Fall, so as to ensure that room area possesses preferable signal covering.

Multi-system combiner:Multi-system combiner is by the radiofrequency signal of multiple frequency ranges, multiple systems, is passed through respectively Different port inputs, exports a kind of radio frequency combining equipment of one or more mixed signal after combining, such as extensively should Multisystem mixing device or multi-system access platform (Point of Interface, POI) for indoor distributed system etc..

POI can introduce including global system for mobile communications (Global System for Mobile Communication, GSM), CDMA (Code Division Multiple Acce, CDMA) system, Digital Cellular System (Digital Cellular system, DCS), it is personal handhold telephone system (Personal Handy-phone System, PHS), wide Band CDMA (Wideband Code Division Multiple Access, WCDMA), long evolving system (Long Term Evolution, LTE), WLAN (Wireless Local Area Networks, WLAN), DTV, Multiple system multiple frequency range signals such as modulating FM, public security fire-fighting.POI is as connection wireless communication donor signal and Distributed coverage The bridge of signal, its major function are that the downlink signal of each operator is combined, at the same to the uplink signal of each system into Row branch, and the useless interference component between each frequency band is curbed as far as possible.

Pilot frequency combiner:Pilot frequency combiner effect is the radio frequency for sending two-way or multichannel from the transmitter of different frequency range Signal is combined into the radio-frequency devices for being sent to antenna transmitting all the way, while avoids influencing each other between each port signal, and alien frequencies closes Road device generally has two or more input ports, only an output port.

Tone signal:Tone signal is exactly non-modulated pulse signal, and bandwidth generally only has several hertz, as signal source is sent out What is sent is exactly tone signal, and the combining of two-way tone signal forms two-tone signal.

Combining signal:By equipment such as combiners by the signal combining of multichannel different frequency range into signal output all the way, this is defeated The signal all the way gone out, is combining signal.

Coupler:In microwave system, often need microwave power all the way being divided into several roads in proportion, here it is power distribution Problem.Realize that the element of this function is known as power distribution component i.e. coupler, coupler is from wireless signal trunk passage In extract the radio-frequency devices of sub-fraction signal.

Duplexer:Also known as notch diplexer, is more special two-way three ports (emission port, receiving port, a public affairs Port altogether) wave filter, faint reception signal should be coupled into by duplexer to be come, and larger transmission power is fed to day again Line gets on, and requires both each to complete its function without influencing each other, and duplexer effect is by transmitting signal and receives signal It is isolated, ensures to receive and transmitting can work normally at the same time.

3dB electric bridges:, 3dB electric bridges are also same frequency combiner, can be two-way combining signal by two input signal combinings, main Be used for the two paths of signals combining of same frequency range, put forward the utilization rate of high output signal, extensively using in indoor covering system to base station The combining of signal.

Load:Load refers to that connection is used for the device for absorbing radio-frequency power in circuit, is to convert electrical current into other shapes The device of the energy of formula, is impedance matching and the power that can bear to loading most basic requirement.

Power meter:Power is calculated as the instrument of measurement electrical power, generally refers to measure power in direct current and low-frequency technology Power meter, and can be described as wattmeter.Power meter is made of power sensor and power indicator two parts.Power sensor is also referred to as Power meter is popped one's head in, and high frequency electrical signal is converted to the electric signal that can directly detect by it by energy.Power indicator includes letter Number amplification, conversion and display.Display directly displays performance number.Connected between power sensor and power indicator with cable Connect.In order to adapt to the needs of different frequency, different capacity level and different transmission line structures, a power meter will match somebody with somebody several not The power meter probe of congenerous.

Frequency spectrograph:Spectrum analyzer is called, is the instrument for studying electric signal spectrum structure, for signal distortion, modulation The measurement of the signal parameters such as degree, spectral purity, frequency stability and crosstalk, can be used to the circuits such as measuring amplifier and wave filter Some parameters of system, are also referred to as frequency domain oscillograph, tracking oscillograph, analysis oscillograph, harmonic analyzer, frequency characteristic point Analyzer or Fourier analyzer etc..Modern frequency spectrograph can in an analog fashion or digital form show analysis result, can analyze 1 hertz with Under very low frequency to whole radio frequency bands of submillimeter region electric signal.Frequency spectrograph has the interface of input signal, mainly Function be that the spectral characteristic of input signal is shown in frequency domain.

Weak signal is extracted:Refer to electronic component (such as coupler) and extract sub-fraction from wireless signal trunk passage The process of signal component.

In general, to multi-system combiner carry out intermodulation product test when, generally comprise passive cross modulation test instrument, Multi-system combiner (such as multisystem mixing device or POI) and the low intermodulation load for absorbing superfluous signal output;

Multi-system combiner generally comprises M input port and K output port, and multi-system combiner is used for will be logical Cross the M roads radiofrequency signal of M input port input, combining is into K roads mixed signal, by K output port output, wherein, K≤ M, K, M are positive integer;

Before testing, user can carry out port definition to M test port of multi-system combiner, that is, define the survey The frequency range for the communication operator that the radiofrequency signal that examination port is used to receive belongs to, for example, the test port 1 of multi-system combiner It is defined in the radiofrequency signal for receiving China Mobile/China Unicom GSM900 frequency ranges;Test port 2, which is defined in, receives China Mobile Radiofrequency signal of GSM1800 frequency ranges etc.;In multi-system combiner, the communication service of the part communication operator of port definition Frequency range is as shown in following table one:

Table 1

The principle tested by passive cross modulation test instrument the input port of multi-system combiner is as follows:

When testing some input port of multi-system combiner, the communication that frequency range is defined with the input port is launched in selection The identical passive cross modulation test instrument of operator's frequency range;The output port of passive cross modulation test instrument and multi-system combiner are needed The input port connection of test, the output port of multi-system combiner connect low intermodulation load, during test, passive cross modulation test Instrument sends combining signal by the input port connected to multi-system combiner, which is the list of two-way different frequency Frequency signal combining is formed, and the communication operator frequency range that this two-way simple signal is defined all in corresponding input port;Then without Intermodulation testing instrument in source receives intermodulation product ionization meter by output or in the another port of passive cross modulation test instrument, to determine Multi-system combiner intermodulation suppression degree.

Intermodulation suppression degree is the performance for assessing multi-system combiner, and intermodulation suppression degree absolute value is bigger, multisystem For the Intermodulation Interference of combining equipment test port with regard to smaller, multi-system combiner properties of product are better.

The mode that intermodulation suppression degree can be calculated according to the maximum intensity of intermodulation product is as follows:

Intermodulation suppression degree=intermodulation product maximum signal-carrier signal strength;

For example, it is assumed that the maximum intensity of the generation intermodulation product of one test port of multi-system combiner test for- 110dBm, since carrier signal strength is fixed value, such as 43dBm, therefore intermodulation suppression degree=- 110dBm-43dBm=- 153dBc。

Such scheme is there are obvious shortcoming, and in production, it launches frequency range and has fixed passive cross modulation test instrument, when passive Intermodulation testing instrument transmitting frequency range fix after, passive cross modulation test instrument receive frequency range also by fixation it is corresponding receive band limits in, Thus a passive cross modulation test instrument is the input port that can only test multi-system combiner special frequency channel, thus to polyphyly When the input port for the different frequency range that integration pipeline equipment defines carries out intermodulation product test, the passive intermodulation of different transmitting frequency ranges is needed Tester;

For multi-system combiner, since there are multiport multicarrier while input carrier signal, interference signal Frequency component number combinations will be very numerous, these frequency components are required for measuring, and only measuring a port can not be complete Into the measurement of the intermodulation product between multiple ports, and the input port of multi-system combiner, output port all may outputs Intermodulation product, the prior art can not simulate combination intermodulation product numerical value when all of the port while input signal, it is impossible to true anti- Answer the upstream noise variable quantity after the access of multisystem main equipment to influence, there is significant limitations.

Based on case above, the embodiment of the present invention provides a kind of test method, equipment and system, first introduces the present invention below The test equipment that embodiment provides, referring to Fig. 1, test equipment 100 is set for testing multisystem mixing in the embodiment of the present invention The intermodulation product of standby test port, the multi-system combiner include M test port, the test port, that is, multisystem mixing Equipment input port to be tested, the multi-system combiner can be multisystem mixing device or POI;

Test equipment 100 includes spectrum measuring device 101 and N number of test module, the N >=M >=2 and N and M are whole Number;Wherein, M test module in N number of test module is used for a pair of with M test port of combining equipment in multisystem One is connected;

Each test module is used for the corresponding test port output into M test port and reaches conjunction in M test module Road signal, so that each test port corresponding test module into M test module returns to intermodulation production in M test port There is the frequency of predetermined power and the combining signal to be located in default frequency range for thing, the combining signal, and combining signal has default work( Rate is that the power for the simple signal for forming the combining signal reaches the predetermined power;The frequency of combining signal is positioned at default frequency The power for each simple signal for forming the combining signal in section is in default frequency range;

In the present embodiment, the corresponding all simple signals of combining signal of each test module transmission in M test module Frequency is different, such as the combining signal that test module 1 is sent closes for the two-way simple signal that frequency is respectively f1, f2 Road is formed, f1 ≠ f2;

The combining signal that the different test modules of test equipment are sent presets the combining signals of frequency ranges, such as first for difference For the combining signal that test module is sent for the first default frequency range, the combining signal that the second test module is sent is the second default frequency range The communication service frequency ranges or same communication operator that frequency range can be different communication operators are preset Deng, the difference Different communication services frequency range, these communication operator difference Communications service frequency ranges are defined as testing on multi-system combiner Test port, such as test module 1 send combining signal for frequency be respectively f1, f2 two-way simple signal combining shape Into f1 ≠ f2, the combining signal that test module 2 is sent is formed for the two-way simple signal combining that frequency is respectively f3, f4, f3 ≠ f4, wherein, f1, f2 are in China Unicom GSM1800/LTE FDD1.8G frequency ranges;Then test module 1 can be used to test lead Mouth is defined as the test port of China Unicom GSM1800/LTE FDD1.8G frequency ranges, and f3, f4 may be at China Telecom CDMA frequencies Section, then test module 2 is that can be used to the test port that test port is defined as China Telecom's CDMA frequency ranges, is not construed as limiting herein;

The frequency range that the frequency of simple signal in the combining signal that different test modules are sent is in, is referred to above-mentioned table Communicate operator's port definition in 1 to be correspondingly arranged, it is to be understood that above-mentioned table 1 only lists part communication operator port The communication service frequency range of definition, should not be as limit.

In the test of intermodulation product, International Electrotechnical Commission (International Electrotechnical Commission, IEC) recommend to send tone signal using two continuous signal sources and measure intermodulation product intensity, surveying The combining signal power that examination end is sent is 43dBm (20w), therefore in the present embodiment, it is mutual to multi-system combiner test port When adjusting the measurement of product, the predetermined power of combining signal is 43dBm under normal circumstances.

Spectrum measuring device 101 is used to be connected with a test module in above-mentioned M test module, and to being connected The intensity for the intermodulation product that the corresponding test port of test module returns measures, to determine the test module being connected The intermodulation suppression degree of corresponding test port;

The intensity for the intermodulation product that spectrum measuring device 101 returns to the corresponding test port of the test module that is connected into During row measurement, the intensity of every kind of intermodulation product can be measured, and can obtain the maximum intensity of intermodulation product, root wherein Intermodulation suppression degree can be calculated according to the maximum intensity of intermodulation product.

Due to hardware limitation, in the prior art, different frequency range intermodulation measurement needs different passive cross modulation test instrument, such as Fig. 2 Shown, after frequency range fixation is launched, passive cross modulation test instrument receives frequency range and is also fixed in the system reception band limits.Often Plus sige item (such as f1+f2,2f1+f2) in a pair of of intermodulation product usually is out bandwidth of operation, only minus sign item (such as 2f1-f2, 3f1-2f2) it is only possible near bandwidth of operation;And for the intermodulation product of even-order, its minus sign item (such as f1-f2,2f1- 2f2) close to DC terms, it is also normally positioned at outside bandwidth of operation.

For multi-frequency and multi-system combining equipment, these frequency components (intermodulation product) may be partly or entirely distributed in Other systems are received in frequency range (port), and the port or heterodoxy mouth are had an impact, thus these frequency component intensity need by Measurement.When multiport multicarrier input carrier signal at the same time, interference signal frequency component (intermodulation product) number combinations are by ten Focus is more, these frequency components are required for measuring.

In the embodiment of the present invention, due to test multi-system combiner input port intermodulation suppression spend when, test equipment M test module in 100 N number of test module, for M test port of multi-system combiner is man-to-man is connected, The combining signal of predetermined power is sent to multi-system combiner to be tested respectively, spectrum measuring device 101 can be to the M The intensity of the intermodulation product of any one test module output in test module measures, and can measure multisystem mixing and set Standby any test port, and without replacing test equipment, make the test of multiple ports simpler, simultaneously because polyphyly integration The test port of pipeline equipment all have input combining signal all the way, simulates each input port of multi-system combiner and inputs letter at the same time Number when scene, make test closer to reality.Such as when multi-system combiner includes 3 input ports, three input terminals Mouth is defined as China Telecom CDMA800, China Unicom WCDMA2100, China Mobile GSM 1800, i.e. three input ports point China Telecom's CDMA800 frequency ranges, China Unicom WCDMA2100 frequency ranges, the letter of 1800 frequency range of China Mobile GSM Yong Yu not accessed Number, three test modules of test equipment:Test module 1, test module 2, test module 3, three test modules correspond to hair The frequency of the simple signal sent is respectively at China Telecom's CDMA800 frequency ranges, China Unicom WCDMA2100 frequency ranges, China Mobile GSM1800 frequency ranges, then can remove these three input ports of the connecting test multi-system combiner with these three test modules. Certainly, the frequency that the simple signal that other test modules correspond to transmission can also be provided with test equipment is in above three frequency In section, it can also select for testing the be located at corresponding port of frequency range, such as when being additionally provided with test module in test equipment 4, which corresponds to the frequency of simple signal sent and is in China Telecom's CDMA800 frequency ranges, then test module at this time 1st, test module 4 may be used to test the input port that multi-system combiner upper port is defined as China Telecom CDMA800.

Alternatively, in embodiments of the present invention, as shown in figure 3, in test equipment, can include extremely in M test module Few the first test module 102 (scene for including the first test module is only shown in figure);

Each the first test module 102 includes the first passive module 1021, the first power amplifier 1022, second Power amplifier 1023, the first signal source 1024 and secondary signal source 1025;

The output terminal of first signal source 1024 is connected with the input terminal of the first power amplifier 1022, and the first power is put The output terminal of big device 1024 is connected with the first input end of first passive module 1021;

The output terminal in the secondary signal source 1025 is connected with the input terminal of the second power amplifier 1023, second power The output terminal of amplifier 1023 is connected with the second input terminal of first passive module 1021;

First signal source 1024 is used to send the first simple signal to the first power amplifier 1022, the first simple signal Frequency is in the first default frequency range, and the first default frequency range can communicate a communication service frequency range of operator, such as China Mobile GSM1800 frequency ranges;

First power amplifier 1022 is used to receive the first simple signal, and processing is amplified to first simple signal, So that the power of first simple signal is identical with the predetermined power, and the first simple signal that will be handled by power amplification Export to the first passive module 1021;

The secondary signal source 1025 is used to send the second simple signal, second single-frequency letter to the second power amplifier 1023 Number frequency be in the first default frequency range, and the frequency of first simple signal and the frequency of second simple signal are not Together;

Second power amplifier 1023 is used to receive the second simple signal, and processing is amplified to second simple signal, So that the power of second simple signal is identical with the predetermined power, and will believe by second single-frequency of power amplification processing Number export to the first passive module 1021;

First passive module 1021 is used to be combined processing to the first simple signal of reception and the second simple signal, To obtain the first combining signal;

First passive module 1021 is additionally operable into the multi-system combiner be connected with the first passive module 1021 Test port export the first combining signal, so as to be connected in the multi-system combiner with the first passive module 1021 Test port return to the first intermodulation product, and when the first passive module 1021 is connected with spectrum measuring device 101, to First intermodulation product that the spectrum measuring device 101 output receives.

It should be noted that when test equipment includes the first more than one test module, it is each this first The frequency for the first combining signal that test module is sent is in different default frequency ranges, so that each test module corresponds to a communication The communication service frequency range of operator, the communication service frequency of different communication operators is defined in the test port of multi-system combiner Duan Shi, is tested with different test modules.

In the embodiment of the present invention, optionally, the first passive module 1021 is additionally operable to respectively in the first combining signal First simple signal, the second simple signal carry out power measurement, obtain the first actual power and the institute of first simple signal State the second actual power of the second simple signal;

First passive module 1021 is additionally operable to respectively believe the first simple signal in the first combining signal, the second single-frequency It can be the first passive module 1021 itself to the first simple signal in the first combining signal, second number to carry out power measurement Simple signal carry out the first simple signal in power measurement or the first passive module 1,021 first combining signal, Second simple signal carries out power measurement indirectly, such as weak component in the first combining signal is output to by the first passive module 1021 Corresponding power-measuring device (such as power meter) measures.

In the case of the first actual power and above-mentioned predetermined power that measurement obtains are different, the first power amplifier 1022 be additionally operable to according to the first actual power to the first simple signal carry out power amplification processing so that first actual power with The predetermined power is identical;

In the case of the second actual power and above-mentioned predetermined power that measurement obtains are different, the second power amplifier 1023 be additionally operable to according to the second actual power to the second simple signal carry out power amplification processing so that second actual power with The predetermined power is identical.

In above-described embodiment, the first passive module 1021 can also set a uplink to export detection mouth, for being surveyed with frequency spectrum Amount device 101 is connected, the intermodulation product received to the spectrum measuring device 101 output.

In the embodiment of the present invention, the first passive module 1021 have it is a variety of realize structure, be introduced in detail below.

Optionally, as shown in figure 4, first passive module 1021 can include the load of 3dB electric bridges 10211, first 10212nd, the first coupler 10213 and first duplexer 10214;

Wherein, the first input port of 3dB electric bridges 10211 connects the first power amplifier 1022,3dB electric bridges 10211 Second input port connects the second power amplifier 1023;First output port of 3dB electric bridges 10211 and the first load 10212 Connection, the second output port connect the first end of the first coupler 10213;

The second port of first coupler 10213 connects the emission port of first duplexer 10214;First duplexer 10214 public port is used to be connected with a test port of the multi-system combiner, and first duplexer 10214 connects Receiving end mouth is used to be connected with spectrum measuring device 101;3rd port of the first coupler is power measurement interface A, first pair Uplink output detection mouth B of the receiving port of work device 10214 i.e. on the first passive module 1021, is used for and spectrum measuring device 101 are connected, the intermodulation product received to the spectrum measuring device 101 output.

3dB electric bridges 10211 are used to the first simple signal of reception and the second simple signal being combined processing, obtain the One two-tone signal and the second two-tone signal, wherein, the first two-tone signal is inputted by the first output port of 3dB electric bridges 10211 To the first load 10212, the second two-tone signal is output to first coupler by the second output port of 3dB electric bridges 10211 10213;

First load 10212 is used to carry out power absorption to the first two-tone signal of reception;

First coupler 10213 is used to carry out weak signal extraction, the weak letter extracted to the second two-tone signal of reception Number and the first combining signal, the weak signal of extraction is exported from power measurement interface A, to measure the of the first simple signal Second actual power of one actual power and the second simple signal, wherein, the weak signal of the extraction can be the second double-tone letter Preset ratio component in number, other parts, that is, the first combining signal in the second two-tone signal in addition to the weak signal, this is pre- If the component of ratio influences less the second two-tone signal overall signal strength, such as the weak signal of extraction can be the second double-tone 2% component, 1% component, 0.5% component or 0.1% component of signal etc., can be external or interior by the weak signal of output Put power test module (or device), for testing the power of the first combining signal, then divided by corresponding ratio, you can obtain the The power of the power of first simple signal and the second simple signal in two two-tone signals, and then obtain first in the first combining signal The power of the power of simple signal and the second simple signal;

For example, when propose the second two-tone signal 1% component, be output to external or built-in power test module (or dress Put) when carrying out power measurement, the power of first simple signal component and the can be tested into the second two-tone signal component respectively The power of two simple signal components, their difference divided by 1%, are multiplied by 100 i.e. available second the first simple signals of two-tone signal Power and the second simple signal power, at this time, in the first combining signal the power of the first simple signal and the second single-frequency letter Number power, be second the first simple signal of two-tone signal power and the second simple signal power 99%.

First coupler 10213 is additionally operable to the first combining signal output to first duplexer 10214;

The first duplexer 10214 is used to export the first combining signal to the test port of connection, and the company of reception The first intermodulation product that the test port connect returns;

First duplexer 10214 is additionally operable to spectrum measuring device 101 be connected in the receiving port of first duplexer 10214 When logical, to the first intermodulation product of spectrum measuring device output reception.

It is corresponding on the first test module test multi-system combiner when first passive module 1021 is said structure The test port principle of connection is as follows:

First signal source 1024 sends the first simple signal to the first power amplifier 1022, and secondary signal source 1025 is to the Two power amplifiers 1023 send the second simple signal, and the first power amplifier 1022, the second power amplifier 1023 can be right The first simple signal, the second simple signal received is amplified processing, then that the first simple signal after enhanced processing is defeated Go out the first input port to the 3dB electric bridges 10211 in the first passive module 1021, by the second simple signal after enhanced processing It is output to the second input port of 3dB electric bridges 10211;

First simple signal of reception, the second simple signal are combined by 3dB electric bridges 10211, obtain two-way double-tone letter Number:First two-tone signal and the second two-tone signal, the first two-tone signal are inputted by the first output port of 3dB electric bridges 10211 To the first load 10212, the second two-tone signal is output to first coupler by the second output port of 3dB electric bridges 10211 10213, the first two-tone signals of first 10212 pairs of receptions of load carry out power absorptions, the first coupler 10213 to reception the Two two-tone signals carry out weak signal extraction, the weak signal extracted and the first combining signal, by the weak signal of extraction from Power measurement interface A is exported, to measure the second actual work(of the first actual power of the first simple signal and the second simple signal Rate, the weak signal of the extraction can be preset ratio components in the second two-tone signal, in the second two-tone signal in addition to the weak signal Other parts, that is, the first combining signal;Power measurement interface A can connect the device or equipment of measurement power, such as Power meter, carries out power measurement, to determine the first combining to the first simple signal in the weak signal of extraction, the second simple signal First actual power of the first simple signal, the second actual power of the second simple signal in signal.

In the case of the first actual power and above-mentioned predetermined power that measurement obtains are different, the first power amplification is adjusted Device 1022 carries out power amplification processing to the first simple signal, so that first actual power is identical with the predetermined power;

In the case of the second actual power and above-mentioned predetermined power that measurement obtains are different, the second power amplification is adjusted Device 1023 carries out power amplification processing to the second simple signal, so that second actual power is identical with the predetermined power.

By the first power amplifier 1022, the second power amplifier 1023 by the first of the first simple signal the actual work( When rate, the second actual power of the second simple signal are adjusted to the predetermined power, the first coupler 2013 is duplexing to first The first combining signal that device 10214 exports reaches predetermined power;

First coupler 10213 is up to the first combining signal output of predetermined power to first duplexer 10214, and One duplexer 10214 exports the test port of the first combining signal to (on multi-system combiner) connection, and receives The first intermodulation product that the test port of connection returns, receiving port of the first duplexer 10214 in first duplexer 10214 When being connected with spectrum measuring device 101, to the first intermodulation product of spectrum measuring device output reception.

Optionally, another structure of the first passive module 1021 is as follows, as shown in figure 5, first passive module includes Pilot frequency combiner 10215, the second coupler 10216 and the second duplexer 10217;

Pilot frequency combiner 10215 includes first input port, the second input port, output port, the pilot frequency combiner 10215 first input port connects the first power amplifier 1022, and second input port connects the second power amplifier 1023;The output port of pilot frequency combiner 10215 connects the first end of the second coupler 10216;

The second port of second coupler 10216 connects the emission port of the second duplexer 10217;Second duplexer 10217 public port is used to be connected with a test port of the multi-system combiner, and the second duplexer 10217 connects Receiving end mouth is used to be connected with spectrum measuring device 101, and the 3rd port of the second coupler 10216 is power measurement interface, the Uplink output detection mouth B of the receiving port of two duplexers 10217 i.e. on the first passive module, is used for and spectrum measuring device 101 are connected, the intermodulation product received to the spectrum measuring device 101 output;

Pilot frequency combiner 10215 is used to the first simple signal of reception and second simple signal being combined place Reason, obtains the 3rd two-tone signal, and be output to the second coupler 10216;

Second coupler 10216 is used to carry out weak signal extraction from the 3rd two-tone signal of reception, is extracted Weak signal and the first combining signal, the weak signal of the extraction are exported from the power measurement interface A, to measure first First actual power of simple signal and the second actual power of the second simple signal, wherein, the weak signal of the extraction is should The preset ratio component of 3rd two-tone signal, other parts, that is, described in the 3rd two-tone signal in addition to the weak signal of the extraction One combining signal, the mode of weak signal extraction may refer to the mode that weak signal is extracted in above-mentioned passive module, herein not Repeat again;

Second coupler 10216 is additionally operable to the first combining signal output to the second duplexer 10217;

Second duplexer 10217 is used to export the first combining signal to the test port of connection, and receives connection Test port return the first intermodulation product, be connected in the receiving port of the second duplexer 10217 with spectrum measuring device 101 When logical, to the first intermodulation product of the spectrum measuring device 101 output reception.

At this time, the test port principle of corresponding connection is as follows on the first test module test multi-system combiner:

First signal source 1024 sends the first simple signal to the first power amplifier 1022, and secondary signal source 1025 is to the Two power amplifiers 1023 send the second simple signal, and the first power amplifier 1022, the second power amplifier 1023 can be right The first simple signal, the second simple signal received is amplified processing (the first simple signal, the first time of the second simple signal Output can not amplify, and can also preset the first power amplifier, the amplification factor of the second power amplifier is put Greatly), the of the 3dB electric bridges 10211 being then output to the first simple signal after enhanced processing in the first passive module 1021 The second simple signal after enhanced processing, is output to the second input port of 3dB electric bridges 10211 by one input port;

First simple signal of reception, the second simple signal are combined by pilot frequency combiner 10215, obtain the 3rd double-tone Signal, and it is output to the second coupler 10216;

Second coupler 10216 carries out weak signal extraction, the weak letter extracted from the 3rd two-tone signal of reception Number and the first combining signal, the weak signal of the extraction export from the power measurement interface A, with measurement first singly First actual power of frequency signal and the second actual power of the second simple signal, wherein, the weak signal of the extraction for this The preset ratio component of three two-tone signals, other parts, that is, described first in the 3rd two-tone signal in addition to the weak signal of the extraction Combining signal;Power measurement interface A can connect the device or equipment of measurement power, such as power meter, to the weak signal of extraction In the first simple signal, the second simple signal carry out power measurement, to determine the first simple signal in the first combining signal First actual power, the second actual power of the second simple signal.

In the case of the first actual power and above-mentioned predetermined power that measurement obtains are different, the first power amplification is adjusted Device 1022 carries out power amplification processing to the first simple signal, so that first actual power is identical with the predetermined power;

In the case of the second actual power and above-mentioned predetermined power that measurement obtains are different, the second power amplification is adjusted Device 1023 carries out power amplification processing to the second simple signal, so that second actual power is identical with the predetermined power.

By the first power amplifier 1022, the second power amplifier 1023 by the first of the first simple signal the actual work( When rate, the second actual power of the second simple signal are adjusted to the predetermined power, the second coupler 10216 is duplexing to second The first combining signal that device 10217 exports reaches predetermined power;

Second coupler 10216 is up to the first combining signal output to the second duplexer 10217 of predetermined power, the Two duplexers 10217 export the test port of the first combining signal to (on multi-system combiner) connection, and receive The first intermodulation product that the test port of connection returns, receiving port of second duplexer 10217 in the second duplexer 10217 When being connected with spectrum measuring device 101, to the first intermodulation product of spectrum measuring device output reception.

In above-described embodiment, power measurement interface A can connect the power-measuring device (or equipment) of outside, and power is surveyed The signal for measuring interface output carries out power measurement, such as the power meter of connecting test device external, the power meter can measure conjunction The power of each simple signal or power measurement module is set in test equipment in the signal of road, power measurement is connect The signal of mouth output carries out power measurement, does not limit herein.

When power measurement module is set in test equipment, power measurement module can be set in each test module, One power measurement module can also be only set.

Therefore, optionally, it is described as shown in fig. 6, the first test module can also include power measurement module 1026 Power measurement module 1026 is connected with power measurement interface A, and power measurement module 1026 is used for received from power measurement interface The signal of A carries out power measurement.

Optionally, as shown in fig. 7, test equipment can individually include a power measurement module 103, the power measurement mould Block 103 is used to be connected with the power measurement interface A in the first test module, to received from the power measurement interface Signal carry out power measurement, which can make power meter, can measure at the same time different single in combining signal The power of frequency signal.

Optionally, as shown in figure 8, in the embodiment of the present invention, switching device 104 can also be included;

Each test module is connected with switching device 104 in M test module of test equipment 100, switch dress 104 are put with spectrum measuring device 101 to be connected;

The switching device 104 is used to make target detection module and the spectrum measuring device in the M test module It is in the conduction state, and other test modules in the M test module is off shape with spectrum measuring device 101 State, so that the intensity for the intermodulation product that spectrum measuring device 101 returns to the corresponding test port of target detection module is surveyed Amount, to determine the intermodulation suppression degree for the corresponding test port of the test module being connected;Wherein, other described test modules Refer to the test module in addition to the target detection module in the M test module.

It should be noted that the target detection module be the M test module in a test module, and from when Between in dimension for, the target detection module is change, such as, the M test module include the first test module, Second test module, the 3rd test module ... M test modules, if at the first moment, the target detection module is first Test module, then at the second moment, the target detection module can be that the M test module removes first test module Outside another test module, such as the second test module or the 3rd test module etc..Specifically, target detection module is on earth It is by controlling the switching device 104 to determine for which of M test module test module.

Optionally, the switching device 104 can include at least one single pole multiple throw, and at least one hilted broadsword is more The moved end of throw switch connects the spectrum measuring device, and the total number X of the non-moving end of at least one single pole multiple throw is more than Equal to test module number N, the uplink output detection mouth of the first each test module connects a non-moving end, and X is positive integer.

Optionally, the switching device 104 can also be switch matrix, as shown in figure 9, the switch matrix is defeated including one Exit port and Y input port, Y are more than or equal to test module number N in test equipment 100, and each the first test module is upper The input port of row output detection mouth B one switch matrix of connection;The output port connection spectrum measurement of the switch matrix Device 101, the control unit in switch matrix are opening of being turned between one input port of controlling switch and the output port Close, when controlling switch matrix makes to turn between an input port and the output port, i.e. input port corresponding first Turned between kind test module and spectrum measuring device 101, at this time, spectrum measuring device 101 can be tested from the first survey The intensity of the intermodulation product of die trial block uplink output detection mouth B outputs.

In the embodiment of the present invention, spectrum measuring device 101 can be existing frequency spectrograph, and frequency spectrograph can measure reception The intensity and frequency of a variety of intermodulation products in signal, in the present embodiment, frequency spectrograph can pass through wire jumper and connect the defeated of its own signal Inbound port and the uplink output detection mouth B in the first test module, to measure the output inspection of the uplink in the first test module The intensity of the intermodulation product of mouth B outputs is surveyed, and then calculates intermodulation suppression degree, determines multi-system combiner properties of product.

When above-mentioned spectrum measuring device 101 has the function of power measurement, the power-measuring device can also be The spectrum measuring device 101, such as frequency spectrograph, this time-frequency spectrometer need to test power measurement shelves and frequency measurement shelves respectively, The power and frequency of input signal are measured respectively.

In test equipment embodiment of the present invention, because the various structures of the first passive module, the first test module also has Various structures, when N number of test module includes the first at least one test module in test equipment 100, when this first When test module is a kind of in above-mentioned various structures, its in the N number of test module of test equipment in addition to the first test module His test module, can be other possible structures of the first test module.

In the embodiment of the present invention, a kind of test system is also provided, as shown in Figure 10, in the embodiment of the present invention in test system Including test equipment, multi-system combiner and low intermodulation power absorption module;

In the embodiment of the present invention, the test equipment of any situation described in test equipment, that is, above-described embodiment.

Multi-system combiner includes M input port and K output port, and multi-system combiner is tried out in will pass through The M roads radiofrequency signal of M input port input, combining is into K roads mixed signal, by K output port output, wherein, K≤M, K, M is positive integer;

M input port of multi-system combiner, that is, need the M test port tested by test equipment;

In the test system, M test module and the M test port in N number of test module of test equipment Man-to-man to be connected, the K output port is connected with the low intermodulation power absorption module respectively;

Thus, in the N number of test module of test equipment, and M test port of multi-system combiner is one-to-one is connected M test module send combining signal transmitting frequency range, it should with the test port of corresponding connection defined in communication system Frequency range it is identical;

In test system of the embodiment of the present invention, low inter-modulated signal power module is used to absorb the multi-system combiner K The superfluous signal energy of a output port output, the low inter-modulated signal power module can be low intermodulation loads, not limit herein It is fixed.

Due to test equipment after manufacture, the corresponding operator's Communications service frequency range of N number of test module output combining signal It has been fixed that, when testing M test port of multi-system combiner, M are selected in the N number of test module of test equipment Test module is used to test M test port, which is according to M of multi-system combiner test Operator's Communications service frequency range of port definition determines, such as the first test port of multi-system combiner is defined as middle League of Nations Logical GSM1800/LTE FDD1.8G frequency ranges, then selection exports the corresponding China Unicom of combining signal in a test device The test module of GSM1800/LTE FDD1.8G frequency ranges is connected with the first test port.

In the embodiment of the present invention, a kind of test method, the execution master of test method provided in an embodiment of the present invention are also provided Body is test equipment, wherein, which can be that any test equipment in example is performed as described above.

1 is please referred to Fig.1, one embodiment test method provided in the embodiment of the present invention, for testing multisystem mixing The intermodulation product of each test port of equipment, the multi-system combiner include M test port, and M is positive integer, the method Including:

1101st, test equipment exports combining signal respectively to M test port on the multi-system combiner, so that Each test port returns to intermodulation product in the M test port;

In the present embodiment, there is the combining signal frequency of predetermined power and the combining signal to be located at default frequency range Interior, the frequency for the combining signal that test equipment is exported to the different test ports on multi-system combiner is in different and presets Frequency range, the difference preset the communication service frequency range that frequency range can be different communication operators or same communication operator Different communication service frequency range, be defined as these communication operator difference Communications services frequencies for testing on multi-system combiner The test port of section;

In some embodiments, the test equipment is defeated to the M test port difference on the multi-system combiner Go out combining signal, can include:

To each test port in M test port, the test equipment exports two-way simple signal:First simple signal With the second simple signal, the frequency of the frequency of first simple signal and second simple signal is in same default frequency Section and frequency difference;

The test equipment carries out power amplification processing to first simple signal and second simple signal respectively, So that the power of first simple signal by power amplification processing is identical with the predetermined power, and put through overpower The power of second simple signal handled greatly is identical with the predetermined power;

The test equipment is to first simple signal by power amplification processing and by power amplification processing Second simple signal is combined processing, obtains and exports combining signal;

Wherein, the test equipment is in the frequency of the combining signal that each test port is sent in M test port The default frequency range of difference.

Further, the test equipment carries out power to first simple signal and second simple signal respectively Enhanced processing, so that the power of first simple signal by power amplification processing is identical with the predetermined power, and The power of second simple signal by power amplification processing is identical with the predetermined power, can include:

The test equipment carries out work(to first simple signal in the combining signal, second simple signal Rate measures, and obtains the first actual power of first simple signal and the second actual power of second simple signal;

In the case of first actual power and the predetermined power are different, the test equipment is according to described One actual power carries out power amplification processing to first simple signal, so that first actual power and the default work( Rate is identical;

In the case of second actual power and the predetermined power are different, institute's test equipment is according to described the Two actual powers carry out power amplification processing to second simple signal, so that second actual power and the default work( Rate is identical.

Further, the test equipment is to first simple signal in the combining signal, second single-frequency Signal carries out power measurement, obtains the first actual power of first simple signal and the second reality of second simple signal Border power, can include:

First simple signal and second simple signal are combined by the test equipment, obtain double-tone letter Number;

The test equipment carries out weak signal extraction, the weak signal extracted and combining to the obtained two-tone signal Signal, the weak signal of the extraction are the preset ratio component of the two-tone signal;

The test equipment carries out power measurement to the weak signal of the extraction, to determine the of first simple signal Second actual power of one actual power and second simple signal.

1102nd, test equipment obtains the intermodulation product that target detection port returns on the multi-system combiner;

Wherein, the target detection port is any one in the M test port;

1103rd, the intensity for the intermodulation product that test equipment returns to the target detection port measures, to determine institute State the intermodulation suppression degree of target detection port.

In the embodiment of the present invention, test equipment can be corresponded with the M test port to be connected, respectively to be measured The combining signal that multi-system combiner sends predetermined power is tried, any one in the M test module can be tested The intensity of the intermodulation product of module output measures, and can measure any test port of multi-system combiner, and does not have to Test equipment is replaced, makes the test of multiple ports simpler, simultaneously because the test port of multi-system combiner all inputs Combining signal all the way, simulate multi-system combiner each input port at the same time input signal when scene, test is more pasted It is near actual.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific works of method, realize process, may be referred to the corresponding process in aforementioned device embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Division, is only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit Close or communicate to connect, can be electrical, machinery or other forms.

The unit illustrated as separating component may or may not be physically separate, be shown as unit The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple In network unit.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.

The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to before Embodiment is stated the present invention is described in detail, it will be understood by those of ordinary skill in the art that:It still can be to preceding State the technical solution described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic;And these Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical solution.

Claims (16)

1. a kind of test equipment, it is characterised in that described more for testing the intermodulation product of multi-system combiner test port System combining equipment includes M test port, and the test equipment includes spectrum measuring device and N number of test module, N >=M >=2 And the N and M are integer;
M test module in N number of test module is used for and the M test port is man-to-man is connected;
Each test module is used for the corresponding test port output conjunction into the M test port in the M test module Road signal, so that each test port corresponding test module into the M test module returns in the M test port There is the frequency of predetermined power and the combining signal to be located in default frequency range for intermodulation product, the combining signal;
The spectrum measuring device is used to be connected with a test module in the M test module, and the institute to being connected The intensity for stating the intermodulation product that the corresponding test port of test module returns measures, to determine the test mould being connected The intermodulation suppression degree of the corresponding test port of block.
2. test equipment according to claim 1, it is characterised in that the M test module includes at least one A kind of test module;
The first described test module include the first passive module, the first signal source, the first power amplifier, secondary signal source and Second power amplifier;
The output terminal of first signal source is connected with the input terminal of first power amplifier, first power amplification The output terminal of device is connected with the first input end of first passive module;
The output terminal in the secondary signal source is connected with the input terminal of second power amplifier, second power amplification The output terminal of device is connected with the second input terminal of first passive module;
First signal source is used to send the first simple signal to first power amplifier, first simple signal Frequency is in the first default frequency range;
First power amplifier is used to receive first simple signal, and place is amplified to first simple signal Reason, so that the power of first simple signal is identical with the predetermined power, and described the will handled by power amplification One simple signal is exported to first passive module;
The secondary signal source is used to send the second simple signal to second power amplifier, second simple signal Frequency is in the described first default frequency range, and the frequency of the frequency of first simple signal and second simple signal is not Together;
Second power amplifier is used to receive second simple signal, and place is amplified to second simple signal Reason, so that the power of second simple signal is identical with the predetermined power, and described the will handled by power amplification Two simple signals are exported to first passive module;
First passive module is used to be combined place to first simple signal of reception and second simple signal Reason, to obtain the first combining signal;
First passive module is additionally operable to the survey being connected into the multi-system combiner with first passive module Try port and export the first combining signal, so as to be connected in the multi-system combiner with first passive module Test port returns to the first intermodulation product, and when first passive module is connected with the spectrum measuring device, to institute State first intermodulation product that spectrum measuring device output receives.
3. test equipment according to claim 2, it is characterised in that
First passive module is additionally operable to respectively to first simple signal in the first combining signal, described second Simple signal carries out power measurement, obtain first simple signal the first actual power and second simple signal the Two actual powers;
In the case of first actual power and the predetermined power are different, first power amplifier is additionally operable to pair First simple signal carries out power amplification processing, so that first actual power is identical with the predetermined power;
In the case of second actual power and the predetermined power are different, second power amplifier is additionally operable to pair Second simple signal carries out power amplification processing, so that second actual power is identical with the predetermined power.
4. the test equipment according to Claims 2 or 3, it is characterised in that
First passive module includes 3dB electric bridges, the first load, the first coupler and first duplexer;
The first input port of the 3dB electric bridges connects first power amplifier, the second input port of the 3dB electric bridges Connect second power amplifier;First output port of the 3dB electric bridges is connected with the described first load, the 3dB electricity Second output port of bridge connects the first port of first coupler;
The second port of first coupler connects the emission port of the first duplexer;The first duplexer it is public Port is used to be connected with a test port of the multi-system combiner, the receiving port of the first duplexer for The spectrum measuring device is connected;3rd port of first coupler is power measurement interface;
The 3dB electric bridges are used to first simple signal and second simple signal being combined processing, obtain first Two-tone signal and the second two-tone signal, first two-tone signal are input to institute by the first output port of the 3dB electric bridges The first load is stated, second two-tone signal is output to first coupler by the second output port of the 3dB electric bridges;
First load is used to carry out power absorption to first two-tone signal of reception;
First coupler is used to carry out weak signal extraction, the weak signal extracted to second two-tone signal of reception With the first combining signal, the weak signal of extraction is exported from the power measurement interface, is believed with measuring first single-frequency Number the first actual power and second simple signal the second actual power, wherein, the weak signal of the extraction is described Preset ratio component in second two-tone signal;
First coupler is additionally operable to the first combining signal output to the first duplexer;
The first duplexer is used to export the first combining signal to the test port of connection, and receives the test of connection First intermodulation product that port returns;
The first duplexer is additionally operable to when the receiving port of the first duplexer is connected with the spectrum measuring device, First intermodulation product received to spectrum measuring device output.
5. the test equipment according to Claims 2 or 3, it is characterised in that
First passive module includes pilot frequency combiner, the second coupler and the second duplexer;
The pilot frequency combiner include first input port, the second input port, output port, the first of the pilot frequency combiner Input port connects first power amplifier, and second input port connects second power amplifier;It is described different The output port of frequency combiner connects the first port of second coupler;
The second port of second coupler connects the emission port of second duplexer;Second duplexer it is public Port is used to be connected with a test port of the multi-system combiner, the receiving port of second duplexer for The spectrum measuring device is connected, and the 3rd port of second coupler is power measurement interface;
The pilot frequency combiner is used to first simple signal and second simple signal being combined processing, obtains the Three two-tone signals, and it is output to second coupler;
Second coupler is used to carry out weak signal extraction, the weak signal extracted from the 3rd two-tone signal of reception With the first combining signal, the weak signal of the extraction is exported from the power measurement interface, it is single to measure described first Second actual power of the first actual power of frequency signal and second simple signal, wherein, the weak signal of the extraction is The preset ratio component of 3rd two-tone signal;
Second coupler is additionally operable to the first combining signal output to second duplexer;
Second duplexer is used to export the first combining signal to the test port of connection, and receives the test of connection First intermodulation product that port returns, is connected in the receiving port of second duplexer with the spectrum measuring device When, to first intermodulation product of spectrum measuring device output reception.
6. test equipment according to claim 4, it is characterised in that power survey is further included in the first described test module Module is measured, the power measurement module is connected with the power measurement interface, and the power measurement module is used for received from institute The signal for stating power measurement interface carries out power measurement.
7. test equipment according to claim 5, it is characterised in that power survey is further included in the first described test module Module is measured, the power measurement module is connected with the power measurement interface, and the power measurement module is used for received from institute The signal for stating power measurement interface carries out power measurement.
8. test equipment according to claim 4, it is characterised in that the test equipment further includes power measurement module, The power measurement module is used to be connected with the power measurement interface in the first test module described in one, to receiving Power measurement is carried out from the signal of the power measurement interface, to measure the first actual power of first simple signal and institute State the second actual power of the second simple signal.
9. test equipment according to claim 5, it is characterised in that the test equipment further includes power measurement module, The power measurement module is used to be connected with the power measurement interface in the first test module described in one, to receiving Power measurement is carried out from the signal of the power measurement interface, to measure the first actual power of first simple signal and institute State the second actual power of the second simple signal.
10. according to any test equipment in claims 1 to 3, it is characterised in that the test equipment further includes switch Device;
Each test module is connected with the switching device in the M test module, the switching device and the frequency Spectrometry device is connected;
The switching device is led for making the target detection module in the M test module be in the spectrum measuring device Logical state, and other test modules in the M test module is off state with the spectrum measuring device, so that The intensity for the intermodulation product that the spectrum measuring device returns to the corresponding test port of target detection module measures, with true Surely the intermodulation suppression degree for the corresponding test port of the test module being connected;Wherein, other described test modules refer to institute State the test module in addition to the target detection module in M test module.
11. according to any test equipment in claims 1 to 3, it is characterised in that the spectrum measuring device is frequency spectrum Instrument.
12. a kind of test system, it is characterised in that absorb mould including test equipment, multi-system combiner and low intermodulation power Block, the multi-system combiner include M test port and K output port, K≤M and K, M are positive integer;Wherein, institute Test equipment is stated as the test equipment as described in any in claim 1 to 11;
The output interface of M test module in N number of test module with the M test port is man-to-man is connected, The K output port is connected with the low intermodulation power absorption module respectively;
The low inter-modulated signal power module is used for the superfluous signal energy for absorbing the multi-system combiner output.
13. a kind of test method, it is characterised in that for testing the intermodulation product of each test port of multi-system combiner, institute Stating multi-system combiner includes M test port, and M >=2 and M are integer, the described method includes:
Test equipment exports combining signal respectively to M test port on the multi-system combiner, so that the M survey Try each test port in port and return to intermodulation product, the combining signal has the frequency of predetermined power and the combining signal In default frequency range;
The test equipment obtains the intermodulation product that target detection port returns on the multi-system combiner, and the target is surveyed It is any one in the M test port to try port;
The intensity for the intermodulation product that the test equipment returns to the target detection port measures, to determine the target The intermodulation suppression degree of test port.
14. according to the method for claim 13, it is characterised in that the test equipment is on the multi-system combiner M test port export combining signal respectively, including:
To each test port in M test port, the test equipment exports two-way simple signal:First simple signal and The frequency of two simple signals, the frequency of first simple signal and second simple signal be in same default frequency range and Frequency is different;
The test equipment carries out power amplification processing to first simple signal and second simple signal respectively, so that The power of first simple signal by power amplification processing is identical with the predetermined power, and by power amplification The power of second simple signal of reason is identical with the predetermined power;
The test equipment is to first simple signal by power amplification processing and by described in power amplification processing Second simple signal is combined processing, obtains and exports combining signal;
Wherein, the test equipment is in difference to the frequency of the combining signal that each test port is sent in M test port Default frequency range.
15. according to the method for claim 14, it is characterised in that the test equipment is respectively to first simple signal Power amplification processing is carried out with second simple signal, so that the work(of first simple signal by power amplification processing Rate is identical with the predetermined power, and the power of second simple signal by power amplification processing and the default work( Rate is identical, including:
The test equipment carries out power survey to first simple signal in the combining signal, second simple signal Amount, obtains the first actual power of first simple signal and the second actual power of second simple signal;
In the case of first actual power and the predetermined power are different, the test equipment is to first single-frequency Signal carries out power amplification processing, so that first actual power is identical with the predetermined power;
In the case of second actual power and the predetermined power are different, institute's test equipment is to second single-frequency Signal carries out power amplification processing, so that second actual power is identical with the predetermined power.
16. according to the method for claim 15, it is characterised in that the test equipment is to described in the combining signal First simple signal, second simple signal carry out power measurement, obtain the first actual power of first simple signal With the second actual power of second simple signal, including:
First simple signal and second simple signal are combined by the test equipment, obtain two-tone signal;
The test equipment carries out the obtained two-tone signal in weak signal extraction, the weak signal extracted and combining letter Number, the weak signal of the extraction is the preset ratio component of the two-tone signal;
The test equipment carries out power measurement to the weak signal of the extraction, to determine that the first of first simple signal is real Second actual power of border power and second simple signal.
CN201510217446.4A 2015-04-30 2015-04-30 A kind of test method, equipment and system CN104967494B (en)

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CN106888063A (en) * 2015-12-15 2017-06-23 中兴通讯股份有限公司 The mutual interference detection method of common antenna feeder combiner, system and base station
CN105511361B (en) * 2016-01-11 2018-06-19 河北晶禾电子技术股份有限公司 Radiofrequency signal intelligence switching matrix switchs
CN106253997B (en) * 2016-08-10 2018-10-19 杭州紫光网络技术有限公司 A kind of multiband intersection cross modulation test system
WO2018040101A1 (en) * 2016-09-05 2018-03-08 华为技术有限公司 Method and device for locating intermodulation position
CN106849970B (en) * 2016-12-29 2019-10-18 上海华为技术有限公司 A kind of passive intermodulation suppressing method and passive intermodulation inhibit system
CN106911400A (en) * 2017-02-08 2017-06-30 广州新拓慧电子科技有限公司 Intermodulation processing unit and intermodulation processing method
CN107124233A (en) * 2017-04-19 2017-09-01 西安空间无线电技术研究所 A kind of use electric bridge filter joint realizes the device and method of broadband passive intermodulation measurement
CN108107345A (en) * 2017-12-12 2018-06-01 广州兴森快捷电路科技有限公司 Passive cross modulation test device

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