CN104967494A - Test method, test device and test system - Google Patents

Abstract

The embodiment of the present invention discloses a test method, a test device and a test system. The test method of the present invention is used to test the intermodulation products of the test ports of a multi-system combining device, and the multi-system combining device comprises M test ports. The method comprises the steps of using a test device to output the combining signals of preset powers to the M test ports of the multi-system combining device separately to thereby enable each of the M test ports to return an intermodulation product; using the test device to obtain the intermodulation product returned by a target test port of the multi-system combining device; using the test device to measure the intensity of the intermodulation products returned by the test ports corresponding to the target test modules to thereby determine the intermodulation suppression degree of the test ports corresponding to the communicated target test modules. According to the embodiment of the present invention, the test of the multi-system combining device is closer to the reality, any test port of the multi-system combining device can be measured without replacing the test device, so that the test of multiple ports is simpler and efficient.

Description

A kind of method of testing, equipment and system

Technical field

The present invention relates to communication technical field, particularly a kind of method of testing, equipment and system.

Background technology

Passive intermodulation (Passive InterModulation, PIM) is that passive device produces, and when there is more than one carrier frequency in device, non-linear due to device itself, can produce many new frequency components, i.e. passive intermodulation product.

Along with the development of wireless technology, frequency is more and more higher, and systems grow is many, 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 distributed system.

Multi-system combiner is by the radiofrequency signal of multiple frequency range, multiple system, and respectively by the input of different ports, a kind of radio frequency exporting one or more mixed signal after closing road closes pipeline equipment.Each end inbound port of multi-system combiner is when inputting corresponding radiofrequency signal, intermodulation product can be produced at each input, between different input port, signal also can produce intermodulation product through multi-system combiner simultaneously, when these intermodulation products fall into the up working band of certain input system, just likely disturb this system, the normal work of influential system, multi-system combiner is positioned at the room subsystem first order, the quality of its intermodulation performance has the greatest impact to wireless network performance, therefore intermodulation product is eliminated in order to take measures, the test of the input intermodulation product of involutory pipeline equipment becomes necessity.

At present, two kinds of modes are mainly taked to the intermodulation product testing equipment that the intermodulation product of multi-system combiner input port is tested: a kind of is produce the carrier signal of two-way with frequency range different frequency by passive cross modulation test instrument, road signal is closed in an input port input to multi-system combiner, tests the intermodulation product that this input port returns; Another kind produces the carrier signal of two-way with frequency range different frequency by passive cross modulation test instrument, and an input port input to multi-system combiner closes road signal, at the intermodulation product that another defeated place port test exports.

Due to hardware constraints, in such scheme, different frequency range intermodulation is measured needs different passive cross modulation test instrument, after passive cross modulation test instrument transmit frequency band is fixing, passive cross modulation test instrument receives frequency range and is also fixed in native system reception band limits, simultaneously, for multi-system combiner, owing to there is multiport multicarrier input carrier signal simultaneously, in intermodulation product, interference signal frequency component number combinations will be very numerous, these frequency components all need to measure, the intermodulation product that only measurement port cannot complete between multiple port is measured, and the input port of multi-system combiner, output port all may export intermodulation product, prior art cannot simulate all of the port simultaneously input signal time combination intermodulation product numerical value, can not actual response multisystem main equipment access after upstream noise variable quantity impact, there is very large limitation.

Summary of the invention

Embodiments provide a kind of method of testing, equipment and system, make the test more closing to reality of multi-system combiner, and any test port of multi-system combiner can be measured, and testing equipment need not be changed, make the test of multiple port simpler.

Embodiment of the present invention first aspect provides a kind of testing equipment, for testing the intermodulation product of multi-system combiner test port, described multi-system combiner comprises M test port, described testing equipment comprises spectrum measuring device and N number of test module, N >=M >=2 and described N and M is integer;

M test module in described N number of test module is used for being connected with a described M test port is man-to-man;

In a described M test module, each test module is used for test port output conjunction road signal corresponding in a described M test port, to make the test module that in a described M test port, each test port is corresponding in a described M test module return intermodulation product, described conjunction road signal has predetermined power and the frequency of described conjunction road signal is positioned at default frequency range;

Described spectrum measuring device is used for being connected with a test module in a described M test module, and the intensity of intermodulation product that the test port corresponding to the described test module be connected returns is measured, to determine the intermodulation suppression degree of the test port that the described test module that is connected is corresponding.

In conjunction with the first aspect of the embodiment of the present invention, in the first implementation of the first aspect of the embodiment of the present invention, a described M test module comprises at least one the first test module;

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

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

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

Described first signal source is used for sending the first simple signal to described first power amplifier, and the frequency of described first simple signal is in first and presets in frequency range;

Described first power amplifier is for receiving described first simple signal, amplification process is carried out to described first simple signal, to make the power of described first simple signal identical with described predetermined power, and described first simple signal through power amplification process is exported to described first passive module;

Described secondary signal source is used for sending the second simple signal to described second power amplifier, and the frequency of described second simple signal is in described first and presets in frequency range, and the frequency of described first simple signal is different with the frequency of described second simple signal;

Described second power amplifier is for receiving described second simple signal, amplification process is carried out to described second simple signal, to make the power of described second simple signal identical with described predetermined power, and described second simple signal through power amplification process is exported to described first passive module;

Described first passive module is used for carrying out the process of conjunction road, to obtain the first conjunction road signal to described first simple signal received and described second simple signal;

The test port of described first passive module also for being connected with described first passive module in described multi-system combiner exports described first and closes road signal, the first intermodulation product is returned to make the test port be connected with described first passive module in described multi-system combiner, and when described first passive module is connected with described spectrum measuring device, export described first intermodulation product received to described spectrum measuring device.

In conjunction with the first implementation of the first aspect of the embodiment of the present invention, in the second implementation of the first aspect of the embodiment of the present invention, described first passive module also for carrying out power measurement to described first simple signal in described first conjunction road signal, described second simple signal respectively, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

When described first actual power and described predetermined power are not identical, described first power amplifier also for carrying out power amplification process to described first simple signal, to make described first actual power identical with described predetermined power;

When described second actual power and described predetermined power are not identical, described second power amplifier also for carrying out power amplification process to described second simple signal, to make described second actual power identical with described predetermined power.

In conjunction with the first kind of way of the first aspect of the embodiment of the present invention or the second implementation of first aspect, in the third implementation of the first aspect of the embodiment of the present invention,

Described first passive module comprises 3dB electric bridge, the first load, the first coupler and first duplexer;

The first input end mouth of described 3dB electric bridge connects described first power amplifier, and the second input port of described 3dB electric bridge connects described second power amplifier; First output port of described 3dB electric bridge is connected with described first load, and the second output port of described 3dB electric bridge connects the first port of described first coupler;

Second port of described first coupler connects the emission port of described first duplexer; The public port of described first duplexer is used for being connected with a test port of described multi-system combiner, and the receiving port of described first duplexer is used for being connected with described spectrum measuring device; 3rd port of described first coupler is power measurement interface;

Described 3dB electric bridge is used for described first simple signal and described second simple signal being carried out the process of conjunction road, obtain the first two-tone signal and the second two-tone signal, described first two-tone signal is input to described first load by the first output port of described 3dB electric bridge, and described second two-tone signal outputs to described first coupler by the second output port of described 3dB electric bridge;

Described first two-tone signal that described first load is used for receiving carries out power absorption;

Described second two-tone signal that described first coupler is used for receiving carries out weak signal extraction, the weak signal and described first obtaining extracting closes road signal, the weak signal extracted is exported from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal, wherein, the weak signal of described extraction is preset ratio component in described second two-tone signal;

Described first coupler also exports described first duplexer to for closing road signal by described first;

Described first duplexer is used for closing road signal by described first and exports to the test port connected, and described first intermodulation product that the test port that reception connects returns;

Described first duplexer, also for when the receiving port of described first duplexer is connected with described spectrum measuring device, exports described first intermodulation product received to described spectrum measuring device.

In conjunction with the first implementation of the first aspect of the embodiment of the present invention or the second implementation of first aspect, in the 4th kind of implementation of the first aspect of the embodiment of the present invention,

Described first passive module comprises pilot frequency combiner, the second coupler and the second duplexer;

Described pilot frequency combiner comprises first input end mouth, the second input port, output port, and the first input end mouth of described pilot frequency combiner connects described first power amplifier, and described second input port connects described second power amplifier; The output port of described pilot frequency combiner connects the first port of described second coupler;

Second port of described second coupler connects the emission port of described second duplexer; The public port of described second duplexer is used for being connected with a test port of described multi-system combiner, the receiving port of described second duplexer is used for being connected with described spectrum measuring device, and the 3rd port of described second coupler is power measurement interface;

Described pilot frequency combiner is used for described first simple signal and described second simple signal being carried out the process of conjunction road, obtains the 3rd two-tone signal, and outputs to described second coupler;

Described 3rd two-tone signal that described second coupler is used for from receiving carries out weak signal extraction, the weak signal and described first obtaining extracting closes road signal, the weak signal of described extraction is exported from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal, wherein, the weak signal of described extraction is the preset ratio component of described 3rd two-tone signal;

Described first coupler also exports described second duplexer to for closing road signal by described first;

Described second duplexer is used for closing road signal by described first and exports to the test port connected, and described first intermodulation product that the test port receiving connection returns, when the receiving port of described second duplexer is connected with described spectrum measuring device, export described first intermodulation product received to described spectrum measuring device.

In conjunction with 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,

Also comprise power measurement module in the first test module described, described power measurement module is connected with described power measurement interface, and described power measurement module is used for carrying out power measurement to the signal being received from described power measurement interface.

In conjunction with 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,

Described testing equipment also comprises power measurement module, described power measurement module is used for being connected with the described power measurement interface in the first test module described in, power measurement is carried out to the signal being received from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal.

In conjunction with the 6th kind of implementation of the first aspect of the embodiment of the present invention, in the 7th kind of implementation of the first aspect of the embodiment of the present invention, described power measurement module is described spectrum measuring device.

In conjunction with the first aspect of the embodiment of the present invention, the first implementation of first aspect, the second implementation of first aspect, the third implementation of first aspect, the 4th kind of implementation of first aspect, the 5th kind of implementation of first aspect, 6th kind of implementation of first aspect, 7th kind of implementation of first aspect, in the 8th kind of implementation of the first aspect of the embodiment of the present invention

Described testing equipment also comprises switching device;

In a described M test module, each test module is all connected with described switching device, and described switching device is connected with described spectrum measuring device;

Described switching device is in conducting state for making the target detection module in a described M test module and described spectrum measuring device, and make other test modules in a described M test module and described spectrum measuring device be in off state, the intensity of the intermodulation product returned with the test port making described spectrum measuring device corresponding to target detection module is measured, to determine the intermodulation suppression degree of the test port that the described test module that is connected is corresponding; Wherein, other test modules described refer to the test module in a described M test module except described target detection module.

In conjunction with the first aspect of the embodiment of the present invention, the first implementation of first aspect, the second implementation of first aspect, the third implementation of first aspect, the 4th kind of implementation of first aspect, 5th kind of implementation of first aspect, 6th kind of implementation of first aspect, the 7th kind of implementation of first aspect, the 8th kind of implementation of first aspect, in the 9th kind of implementation of the first aspect of the embodiment of the present invention, described spectrum measuring device is frequency spectrograph.

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

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

The superfluous signal energy that described low inter-modulated signal power model exports for absorbing described multi-system combiner.

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

Testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, to make each test port in a described M test port return intermodulation product, described conjunction road signal has predetermined power and the frequency of described conjunction road signal is positioned at default frequency range;

Described testing equipment obtains the intermodulation product that on described multi-system combiner, target detection port returns, and described target detection port is any one in a described M test port;

The intensity of described testing equipment to the intermodulation product that described target detection port returns is measured, to determine the intermodulation suppression degree of described target detection port.

In conjunction with 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, described testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, comprising:

To each test port in M test port, described testing equipment exports two-way simple signal: the first simple signal and the second simple signal, and the frequency of described first simple signal is in same default frequency range with the frequency of described second simple signal and frequency is different;

Described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process;

Described testing equipment carries out the process of conjunction road to described first simple signal through power amplification process and described second simple signal through power amplification process, obtains and export closing road signal;

Wherein, the frequency of described testing equipment to the conjunction road signal that test port each in M test port sends is in different default frequency range.

In conjunction with the first implementation of the third aspect of the embodiment of the present invention, in the second implementation of the third aspect of the embodiment of the present invention,

Described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process, comprising:

Described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

When described first actual power and described predetermined power are not identical, described testing equipment carries out power amplification process to described first simple signal, to make described first actual power identical with described predetermined power;

When described second actual power is not identical with described predetermined power, described testing equipment carries out power amplification process to described second simple signal, to make described second actual power identical with described predetermined power.

In conjunction with the second implementation of the third aspect of the embodiment of the present invention, in the third implementation of the third aspect of the embodiment of the present invention,

Described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtains the first actual power of described first simple signal and the second actual power of described second simple signal, comprising:

Described first simple signal and described second simple signal are carried out conjunction road by described testing equipment, obtain two-tone signal;

Described testing equipment carries out weak signal extraction to the described two-tone signal obtained, and obtain the weak signal of extraction and close road signal, the weak signal of described extraction is the preset ratio component of described two-tone signal;

Described testing equipment carries out power measurement to the weak signal of described extraction, with the second actual power of the first actual power and described second simple signal of determining described first 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, testing equipment can be connected with described M test port one_to_one corresponding, the conjunction road signal of predetermined power is sent respectively to multi-system combiner to be tested, can measure the intensity of the intermodulation product that any one test module in a described M test module exports, any test port of multi-system combiner can be measured, and testing equipment need not be changed, make the test of multiple port simpler, simultaneously because the test port of multi-system combiner all have input conjunction road, a road signal, simulate each input port of multi-system combiner simultaneously input signal time scene, make test more closing to reality.

Term " first ", " second " etc. (if existence) in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.The embodiments described herein should be appreciated that the data used like this can be exchanged in the appropriate case, so that can be implemented with the order except the content except here diagram or description.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.

To facilitate understanding of the present embodiment of the invention, first introduce during the embodiment of the present invention describes at this several key elements that can introduce;

Intermodulation:

Intermodulation (IM, InterModulation) refers to the radiofrequency signal having and differ from relation with original signal when two or more frequency signal produces through the device with nonlinear characteristic, also known as intermodulation product, intermodulation or intermodulation product.In order to capacity, adopt the phenomenon of multiple carrier wave (frequency) very general in communication system, and carrier power also have the trend strengthened gradually simultaneously; Consider that side circuit all possesses non-linear behavior usually, intermodulation and Intermodulation Interference become common phenomenon, be all found and cause extensive attention in the systems such as the systems such as cell mobile communication systems, microwave telecommunication system, trunked mobile communication system, satellite communication system, ship communication system, civil aviaton's communication system, cable television system.

Intermodulation is generally divided into active intermodulation and passive intermodulation two kinds, in view of the order of severity of produced intermodulation product, people mainly pay close attention to active intermodulation traditionally, but along with the more application of high-power transmitter and improving constantly of receiver sensitivity, the system interference that passive intermodulation produces is day by day serious, therefore more and more by operator, system manufacturer and device manufacturer pay close attention to.Passive intermodulation (Passive InterModulation, PIM) is that passive device produces, and when there is more than one carrier frequency in device, non-linear due to device itself, can produce many new frequency components, i.e. passive intermodulation product.

Passive intermodulation is specifically divided into again forward intermodulation (Forward IM) and reverse intermodulation (Reverse IM) two kinds of modes, wherein forward intermodulation is also called transmission intermodulation (Transfer IM), and reverse intermodulation is also called reflection intermodulation (Reflection IM).

Indoor distributed system: indoor distributed system is for indoor user group, for improving the successful scheme of the one of mobile communication environment in building, be utilize domestic aerial compartment system that the signal of mobile base station is evenly distributed on indoor every nook and cranny, thus ensure that room area has desirable quorum sensing inhibitor.

Multi-system combiner: multi-system combiner is by the radiofrequency signal of multiple frequency range, multiple system, input respectively by different ports, a kind of radio frequency exporting one or more mixed signal after closing road closes pipeline equipment, such as be widely used in the multisystem mixing device or multi-system access platform (Point of Interface, POI) etc. of indoor distributed system.

POI can introduce and comprise global system for mobile communications (Global System for MobileCommunication, GSM), code division multiple access (Code Division Multiple Acce, CDMA) system, Digital Cellular System (Digital Cellular system, DCS), personal handhold telephone system (Personal Handy-phone System, PHS), Wideband Code Division Multiple Access (WCDMA) (Wideband CodeDivision Multiple Access, WCDMA), long evolving system (Long Term Evolution, LTE), WLAN (wireless local area network) (Wireless Local Area Networks, WLAN), Digital Television, modulating FM, the multiple frequency band signals of multiple system such as public security fire-fighting.POI is as the bridge connecting radio communication donor signal and Distributed coverage signal, its major function carries out conjunction road to the downstream signal of each operator, shunt is carried out to the upward signal of each system simultaneously, and curb the useless interference component between each frequency band as far as possible.

Pilot frequency combiner: pilot frequency combiner effect is that two-way or multichannel are combined into from the radiofrequency signal that the transmitter of different frequency range sends the radio-frequency devices that antenna transmission is delivered on a road, avoid influencing each other between each port signal simultaneously, pilot frequency combiner generally has two or more input port, only has an output port.

Tone signal: tone signal is exactly the pulse signal of non-modulated, and frequency range generally only has several hertz, as signal source transmission is exactly tone signal, and two-way tone signal closes road and namely forms two-tone signal.

Close road signal: through equipment such as mixers, the signal of multichannel different frequency range is closed Lu Chengyi road signal and export, a road signal of this output, be and close road signal.

Coupler: in microwave system, often Xu Jiang mono-road microwave power is divided into a few road in proportion, Here it is power distribution problems.The element realizing this function is called power division components and parts and coupler, and coupler is the radio-frequency devices extracting sub-fraction signal from wireless signal trunk passage.

Duplexer: also known as antenna multicoupler, it is more special two-way three ports (emission port, receiving port, a public port) filter, the coupling of faint Received signal strength should be come in by duplexer, again larger transmitting power is fed to antenna to get on, and complete its function separately both requiring and do not influence each other, duplexer effect is isolated with Received signal strength by transmitting, and ensures to receive and launch and can normally work simultaneously.

3dB electric bridge:, 3dB electric bridge is also same frequency combiner, and two input signals can be closed road is that two-way closes road signal, and the two paths of signals being mainly used in same frequency range closes road, improves the utilance of output signal, to the conjunction road of base station signal in extensive use indoor covering system.

Load: load refers to connection in circuit for absorbing the device of radio-frequency power is device electric energy being converted to other forms of energy, the power that the requirement the most basic to load is impedance matching and can bear.

Power meter: power counts the instrument measuring electrical power, generally refers to the power meter measuring power in direct current and low-frequency technology, can be described as wattmeter again.Power meter is made up of power sensor and power indicator two parts.Power sensor also claims power meter to pop one's head in, and it is can the signal of telecommunication of direct-detection high frequency electrical signal by power conversion.Power indicator comprises signal and amplifies, converts and display.Display directly shows performance number.Connect with cable between power sensor and power indicator.In order to adapt to the needs of different frequency, different capacity level and different transmission line structure, a power meter will join the power meter probe of several difference in functionalitys.

Frequency spectrograph: be spectrum analyzer again, it is the instrument of research signal of telecommunication spectrum structure, for the measurement of the signal parameters such as signal distortion, percentage modulation spectral purity, frequency stability and crosstalk, in order to some parameter of the Circuits System such as measuring amplifier and filter, also can be described as frequency domain oscilloscope, follow the tracks of oscilloscope, analyze oscilloscope, harmonic analyzer, frequency characteristic analyzer or Fourier analyzer etc.Modern frequency spectrograph can in an analog fashion or digital form display analysis result, and the very low frequency analyzing less than 1 hertz is to the signal of telecommunication of whole radio frequency bands of submillimeter region.Frequency spectrograph has the interface of input signal, and main function is the spectral characteristic showing input signal in frequency domain.

Weak signal is extracted: refer to that electronic devices and components (as coupler etc.) extract the process of sub-fraction signal component from wireless signal trunk passage.

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

Multi-system combiner generally comprises M input port and K output port, and multi-system combiner is used for, by the M road radiofrequency signal by M input port input, closing road and becoming K road mixed signal, exported by K output port, wherein, K≤M, K, M are positive integer;

Before testing, user can carry out port definition to the M of a multi-system combiner test port, namely the frequency range of the communication operator that this test port belongs to for the radiofrequency signal received is defined, such as, the test port 1 of multi-system combiner is defined in the radiofrequency signal receiving China Mobile/CHINAUNICOM GSM900 frequency range; Test port 2 is defined in radiofrequency signal receiving China Mobile GSM 1800 frequency range etc.; In multi-system combiner, the communication service frequency range of the part communication operator of port definition is as shown in following table one:

Table 1

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

When testing certain input port of multi-system combiner, select the passive cross modulation test instrument that transmit frequency band is identical with the communication operator frequency range that this input port defines; The input port tested is needed to be connected the output port of passive cross modulation test instrument and multi-system combiner, the output port of multi-system combiner connects low intermodulation load, during test, passive cross modulation test instrument is sent by the input port connected to multi-system combiner and closes road signal, this conjunction road signal is that the simple signal of two-way different frequency closes road formation, and this two-way simple signal is all in the communication operator frequency range of corresponding input port definition; Then passive cross modulation test instrument is by exporting or receiving intermodulation product ionization meter in the another port of passive cross modulation test instrument, to determine multi-system combiner intermodulation suppression degree.

Intermodulation suppression degree is used to the performance assessing multi-system combiner, and intermodulation suppression degree absolute value is larger, and the Intermodulation Interference of multi-system combiner test port is less, and multi-system combiner properties of product are better.

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

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

Such as, suppose that the maximum intensity of the generation intermodulation product of a multi-system combiner test port test is-110dBm, because carrier signal strength is fixed value, such as 43dBm, therefore intermodulation suppression degree=-110dBm-43dBm=-153dBc.

There is open defect in such scheme, passive cross modulation test instrument is when producing, its transmit frequency band is fixed, after passive cross modulation test instrument transmit frequency band is fixing, passive cross modulation test instrument receives frequency range and is also fixed in corresponding reception band limits, thus namely passive cross modulation test instrument can only test the input port of multi-system combiner special frequency channel, thus, when the input port of the different frequency range defined multi-system combiner carries out intermodulation product test, the passive cross modulation test instrument of different transmit frequency band is needed;

For multi-system combiner, owing to there is multiport multicarrier input carrier signal simultaneously, interference signal frequency component number combinations will be very numerous, these frequency components all need to measure, only measure the measurement that a port cannot complete the intermodulation product between multiple port, and the input port of multi-system combiner, output port all may export intermodulation product, prior art cannot simulate all of the port simultaneously input signal time combination intermodulation product numerical value, can not actual response multisystem main equipment access after upstream noise variable quantity impact, there is very large limitation.

Based on above situation, the embodiment of the present invention provides a kind of method of testing, equipment and system, first introduce the testing equipment that the embodiment of the present invention provides below, refer to Fig. 1, in the embodiment of the present invention, testing equipment 100 is for testing the intermodulation product of multi-system combiner test port, this multi-system combiner comprises M test port, this test port and multi-system combiner input port to be tested, and this multi-system combiner can be multisystem mixing device or POI;

Testing equipment 100 comprises spectrum measuring device 101 and N number of test module, N >=M >=2 and described N and M is integer; Wherein, M test module in described N number of test module is used for being connected with M the test port closing pipeline equipment in multisystem is man-to-man;

In M test module, each test module exports to reach for test port corresponding in M test port and closes road signal, intermodulation product is returned to make the test module that in M test port, each test port is corresponding in M test module, the frequency that this conjunction road signal has predetermined power Qie Gaihe road signal is positioned at default frequency range, closes road signal and has the power that namely predetermined power form the simple signal of this conjunction road signal and all reach described predetermined power; The frequency of closing road signal is positioned at the power that namely default frequency range form each simple signal of this conjunction road signal and is all in default frequency range;

In the present embodiment, the frequency of all simple signals that the conjunction road signal that in M test module, each test module sends is corresponding is all different, and the conjunction road signal that such as test module 1 sends is the two-way simple signal conjunction road formation that frequency is respectively f1, f2, f1 ≠ f2;

The conjunction road signal that the different test modules of testing equipment send is the different conjunction road signals presetting frequency range, the conjunction road signal that such as the first test module sends is the first default frequency range, the conjunction road signal that second test module sends is the second default frequency range etc., this difference presets the communication service frequency range that frequency range can be different communication operator, also can be the different communication service frequency range of same communication operator, be used for testing test port multi-system combiner being defined as the different Communications service frequency range of these communication operators, the conjunction road signal that such as test module 1 sends is that frequency is respectively f1, the two-way simple signal of f2 closes road and is formed, f1 ≠ f2, the conjunction road signal that test module 2 sends is that frequency is respectively f3, the two-way simple signal of f4 closes road and is formed, f3 ≠ f4, wherein, f1, f2 is in CHINAUNICOM GSM1800/LTE FDD1.8G frequency range, then namely test module 1 can be used to the test port that test port is defined as CHINAUNICOM GSM1800/LTE FDD1.8G frequency range, f3, f4 can be in China Telecom CDMA frequency range, then namely test module 2 can be used to the test port that test port is defined as China Telecom CDMA frequency range, is not construed as limiting herein,

The frequency range that the frequency of the simple signal in the conjunction road signal that different test module sends is in, can arrange with reference to communication operator port definition correspondence in above-mentioned table 1, be understandable that, above-mentioned table 1 only lists the communication service frequency range of part communication operator port definition, should as limit.

In the test of intermodulation product, International Electrotechnical Commission (International ElectrotechnicalCommission, IEC) recommend to utilize two continuous signal sources to send tone signal to measure intermodulation product intensity, be 43dBm (20w) in the conjunction road signal power that test lead sends, therefore in the present embodiment, during measurement to multi-system combiner test port intermodulation product, the predetermined power closing road signal is generally 43dBm.

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

When the intensity of the intermodulation product that the test port that spectrum measuring device 101 is corresponding to the test module be connected returns is measured, the intensity of often kind of intermodulation product all can be measured, can obtain the maximum intensity of intermodulation product wherein, the maximum intensity according to intermodulation product can calculate intermodulation suppression degree.

Due to hardware constraints, in prior art, different frequency range intermodulation is measured needs different passive cross modulation test instrument, and as shown in Figure 2, after transmit frequency band is fixing, passive cross modulation test instrument receives frequency range and is also fixed in native system reception band limits.Plus sige item (as f1+f2,2f1+f2) in every a pair intermodulation product exceeds bandwidth of operation usually, only has minus sign item (as 2f1-f2,3f1-2f2) just may drop near bandwidth of operation; And for the intermodulation product of even-order, its minus sign item (as f1-f2,2f1-2f2), close to DC terms, is also positioned at outside bandwidth of operation usually.

Pipeline equipment is closed for multi-frequency and multi-system, these frequency components (intermodulation product) partly or entirely may be distributed in other system and receive in frequency range (port), have an impact to the port or heterodoxy mouth, therefore these frequency component intensity needs measured.When multiport multicarrier while during input carrier signal, interference signal frequency component (intermodulation product) number combinations will be very numerous, and these frequency components all need to measure.

In the embodiment of the present invention, due to when testing multi-system combiner input port intermodulation suppression and spending, M test module in N number of test module of testing equipment 100, for being connected with a multi-system combiner M test port is man-to-man, the conjunction road signal of predetermined power is sent respectively to multi-system combiner to be tested, spectrum measuring device 101 can be measured the intensity of the intermodulation product that any one test module in a described M test module exports, any test port of multi-system combiner can be measured, and testing equipment need not be changed, make the test of multiple port simpler, simultaneously because the test port of multi-system combiner all have input conjunction road, a road signal, simulate each input port of multi-system combiner simultaneously input signal time scene, make test more closing to reality.Such as when multi-system combiner comprises 3 input ports, these three input ports are defined as China Telecom CDMA800, CHINAUNICOM WCDMA2100, China Mobile GSM 1800, namely these three input ports are respectively used to access China Telecom CDMA800 frequency range, CHINAUNICOM WCDMA2100 frequency range, the signal of China Mobile GSM 1800 frequency range, three test modules of testing equipment: test module 1, test module 2, test module 3, the frequency of the simple signal that these three test module correspondences send is in China Telecom CDMA800 frequency range respectively, CHINAUNICOM WCDMA2100 frequency range, China Mobile GSM 1800 frequency range, these three input ports of this multi-system combiner of connecting test then can be removed with these three test modules.Certainly, the frequency that also can be provided with the simple signal that other test module correspondences send in testing equipment is in above-mentioned three frequency ranges, also can select for testing port corresponding to be positioned at frequency range, such as when being also provided with test module 4 in testing equipment, the frequency of the simple signal that this test module 4 correspondence sends is in China Telecom CDMA800 frequency range, then now test module 1, 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 testing equipment, at least one the first test module 102 (scene comprising the first test module is only shown in figure) can in M test module, be comprised;

This first test module 102 each comprises the first passive module 1021, first power amplifier 1022, second power amplifier 1023, first signal source 1024 and secondary signal source 1025;

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

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

First signal source 1024 is for sending the first simple signal to the first power amplifier 1022, the frequency of the first simple signal is in first and presets in frequency range, first presets the communication service frequency range that frequency range can be communication operator, as China Mobile GSM 1800 frequency range;

First power amplifier 1022 is for receiving the first simple signal, amplification process is carried out to this first simple signal, to make the power of this first simple signal identical with described predetermined power, and the first simple signal through power amplification process is exported to the first passive module 1021;

This secondary signal source 1025 is for sending the second simple signal to the second power amplifier 1023, and the frequency of this second simple signal is in this first default frequency range, and the frequency of this first simple signal is different with the frequency of this second simple signal;

Second power amplifier 1023 is for receiving the second simple signal, amplification process is carried out to this second simple signal, to make the power of this second simple signal identical with described predetermined power, and this second simple signal through power amplification process is exported to the first passive module 1021;

This first passive module 1021 processes for carrying out conjunction road to the first simple signal received and the second simple signal, to obtain the first conjunction road signal;

The test port of the first passive module 1021 also for being connected with the first passive module 1021 in described multi-system combiner exports this and first closes road signal, the first intermodulation product is returned to make the test port be connected with the first passive module 1021 in described multi-system combiner, and when the first passive module 1021 is connected with spectrum measuring device 101, export this first intermodulation product received to this spectrum measuring device 101.

It should be noted that, when testing equipment comprises the first test module more than one, the first frequency of closing road signal that this first test module each sends is in different default frequency range, so that the communication service frequency range of the corresponding communication operator of each test module, when the test port of multi-system combiner defines the communication service frequency range of different communication operator, test with different test modules.

In the embodiment of the present invention, optionally, first passive module 1021 also for carrying out power measurement to the first simple signal in this first conjunction road signal, the second simple signal respectively, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

First passive module 1021 also for first closing the first simple signal in road signal to this respectively, to carry out power measurement can be the first passive module 1021 self to the second simple signal first closes the first simple signal in the signal of road to this, the second simple signal carries out power measurement, also can be the first passive module 1021 this first close the first simple signal in road signal, the second simple signal carries out power measurement indirectly, such as the first passive module 1021 closes weak component in the signal of road and outputs to corresponding power-measuring device (as power meter) and measure by first.

When measuring the first actual power obtained and being not identical with above-mentioned predetermined power, first power amplifier 1022 also for carrying out power amplification process according to the first actual power to the first simple signal, to make this first actual power identical with described predetermined power;

When measuring the second actual power obtained and being not identical with above-mentioned predetermined power, second power amplifier 1023 also for carrying out power amplification process according to the second actual power to the second simple signal, to make this second actual power identical with described predetermined power.

In above-described embodiment, the first passive module 1021 can also arrange a up output detections mouth, for being connected with spectrum measuring device 101, exports the intermodulation product received to described spectrum measuring device 101.

In the embodiment of the present invention, the first passive module 1021 has multiple implementation structure, is introduced in detail below.

Optionally, as shown in Figure 4, this first passive module 1021 can comprise 3dB electric bridge 10211, first load 10212, first coupler 10213 and first duplexer 10214;

Wherein, the second input port that the first input end mouth of 3dB electric bridge 10211 connects the first power amplifier 1022,3dB electric bridge 10211 connects the second power amplifier 1023; First output port of 3dB electric bridge 10211 is connected with the first load 10212, and the second output port connects the first end of the first coupler 10213;

Second port of this first coupler 10213 connects the emission port of first duplexer 10214; The public port of first duplexer 10214 is used for being connected with a test port of described multi-system combiner, and the receiving port of first duplexer 10214 is used for being connected with spectrum measuring device 101; 3rd port of the first coupler is power measurement interface A, up output detections mouth B on receiving port i.e. first passive module 1021 of first duplexer 10214, for being connected with spectrum measuring device 101, export the intermodulation product received to this spectrum measuring device 101.

3dB electric bridge 10211 is for carrying out the process of conjunction road by the first simple signal received and the second simple signal, obtain the first two-tone signal and the second two-tone signal, wherein, first two-tone signal is input to the first load 10212, second two-tone signal by the first output port of 3dB electric bridge 10211 and outputs to this first coupler 10213 by the second output port of 3dB electric bridge 10211;

This first load 10212 is for carrying out power absorption to the first two-tone signal received;

First coupler 10213 is for carrying out weak signal extraction to the second two-tone signal received, the weak signal and described first obtaining extracting closes road signal, the weak signal extracted is exported from power measurement interface A, with the second actual power of the first actual power and the second simple signal of measuring the first simple signal, wherein, the weak signal of described extraction can be preset ratio component in the second two-tone signal, other parts in second two-tone signal except this weak signal and described first close road signal, the component of this preset ratio is little on the second two-tone signal overall signal strength impact, the weak signal such as extracted can be 2% component of the second two-tone signal, 1% component, 0.5% component or 0.1% component etc., by the weak signal exported, can external or built-in power test module (or device), for testing the power of the first conjunction road signal, again divided by corresponding ratio, the power of the first simple signal in the second two-tone signal and the power of the second simple signal can be obtained, and then obtain the power of the first simple signal and the power of the second simple signal in the first conjunction road signal,

Such as, when 1% component of proposition second two-tone signal, output to external or built-in power test module (or device) carries out power measurement time, the power of the first simple signal component in the second two-tone signal component and the power of the second simple signal component can be tested respectively, they are respectively divided by 1%, be multiplied by 100 and can obtain the power of the second two-tone signal first simple signal and the power of the second simple signal, now, first closes the power of the first simple signal and the power of the second simple signal in the signal of road, be 99% of the power of the second two-tone signal first simple signal and the power of the second simple signal.

First coupler 10213 also exports first duplexer 10214 to for closing road signal by described first;

This first duplexer 10214 exports to the test port connected for closing road signal by described first, and the first intermodulation product that the test port receiving connection returns;

First duplexer 10214, also for when the receiving port of first duplexer 10214 is connected with spectrum measuring device 101, exports the first intermodulation product received to described spectrum measuring device.

When first passive module 1021 is said structure, on this first test module test multi-system combiner, the corresponding test port principle connected is as follows:

First signal source 1024 sends the first simple signal to the first power amplifier 1022, secondary signal source 1025 sends the second simple signal to the second power amplifier 1023, first power amplifier 1022, second power amplifier 1023 can carry out amplification process to the first simple signal received, the second simple signal, then the first simple signal after amplification process is outputted to the first input end mouth of the 3dB electric bridge 10211 in the first passive module 1021, the second simple signal after amplification process is outputted to the second input port of 3dB electric bridge 10211;

The first simple signal that 3dB electric bridge 10211 will receive, second simple signal carries out conjunction road, obtain two-way two-tone signal: the first two-tone signal and the second two-tone signal, first two-tone signal is input to the first load 10212 by the first output port of 3dB electric bridge 10211, second two-tone signal outputs to this first coupler 10213 by the second output port of 3dB electric bridge 10211, first load 10212 carries out power absorption to the first two-tone signal received, first coupler 10213 carries out weak signal extraction to the second two-tone signal received, the weak signal and described first obtaining extracting closes road signal, the weak signal extracted is exported from power measurement interface A, with the second actual power of the first actual power and the second simple signal of measuring the first simple signal, the weak signal of this extraction can be preset ratio component in the second two-tone signal, other parts in second two-tone signal except this weak signal and described first close road signal, power measurement interface A can connect the device or equipment of measuring power, such as power meter, power measurement is carried out, to determine the first actual power of the first simple signal, the second actual power of the second simple signal in the first conjunction road signal to the first simple signal in the weak signal extracted, the second simple signal.

When measuring the first actual power obtained and being not identical with above-mentioned predetermined power, adjust the first power amplifier 1022 and power amplification process is carried out to the first simple signal, to make this first actual power identical with described predetermined power;

When measuring the second actual power obtained and being not identical with above-mentioned predetermined power, adjust the second power amplifier 1023 and power amplification process is carried out to the second simple signal, to make this second actual power identical with described predetermined power.

When first actual power of the first simple signal, the second actual power of the second simple signal all being adjusted to described predetermined power by the first power amplifier 1022, second power amplifier 1023, namely the first conjunction road signal that the first coupler 2013 exports to first duplexer 10214 reaches predetermined power;

First coupler 10213 closes road signal by reach predetermined power first and exports first duplexer 10214 to, first duplexer 10214 closes the test port output that road signal connects to (on multi-system combiner) by described first, and the first intermodulation product that the test port receiving connection returns, first duplexer 10214, when the receiving port of first duplexer 10214 is connected with spectrum measuring device 101, exports the first intermodulation product received to described spectrum measuring device.

Optionally, the another kind of structure of the first passive module 1021 is as follows, and as shown in Figure 5, this first passive module comprises pilot frequency combiner 10215, second coupler 10216 and the second duplexer 10217;

Pilot frequency combiner 10215 comprises first input end mouth, the second input port, output port, and the first input end mouth of described pilot frequency combiner 10215 connects the first power amplifier 1022, and described 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;

Second port of the second coupler 10216 connects the emission port of the second duplexer 10217; The public port of the second duplexer 10217 is used for being connected with a test port of described multi-system combiner, the receiving port of the second duplexer 10217 is used for being connected with spectrum measuring device 101,3rd port of the second coupler 10216 is power measurement interface, up output detections mouth B on receiving port i.e. first passive module of the second duplexer 10217, for being connected with spectrum measuring device 101, export the intermodulation product received to this spectrum measuring device 101;

Pilot frequency combiner 10215, for the first simple signal received and described second simple signal are carried out the process of conjunction road, obtains the 3rd two-tone signal, and outputs to the second coupler 10216;

Second coupler 10216 is for carrying out weak signal extraction from described 3rd two-tone signal received, the weak signal and described first obtaining extracting closes road signal, the weak signal of described extraction is exported from described power measurement interface A, with the second actual power of the first actual power and the second simple signal of measuring the first simple signal, wherein, the weak signal of described extraction is the preset ratio component of the 3rd two-tone signal, other parts in 3rd two-tone signal except the weak signal of this extraction and described first close road signal, the mode that the mode that this weak signal is extracted can be extracted see weak signal in above-mentioned passive module, repeat no more herein,

Second coupler 10216 also exports the second duplexer 10217 to for closing road signal by described first;

Second duplexer 10217 exports to the test port connected for closing road signal by described first, and the first intermodulation product that the test port receiving connection returns, when the receiving port of the second duplexer 10217 is connected with spectrum measuring device 101, export the first intermodulation product received to this spectrum measuring device 101.

Now, on this first test module test multi-system combiner, the corresponding test port principle connected is as follows:

First signal source 1024 sends the first simple signal to the first power amplifier 1022, secondary signal source 1025 sends the second simple signal to the second power amplifier 1023, first power amplifier 1022, second power amplifier 1023 can to the first simple signal received, second simple signal carries out amplification process (the first simple signal, the first time of the second simple signal exports can not amplify, also the first power amplifier can be preset, the multiplication factor of the second power amplifier is amplified), then the first simple signal after amplification process is outputted to the first input end mouth of the 3dB electric bridge 10211 in the first passive module 1021, the second simple signal after amplification process is outputted to the second input port of 3dB electric bridge 10211,

The first simple signal received, the second simple signal are carried out conjunction road by pilot frequency combiner 10215, obtain the 3rd two-tone signal, and output to the second coupler 10216;

Second coupler 10216 carries out weak signal extraction from described 3rd two-tone signal received, the weak signal and described first obtaining extracting closes road signal, the weak signal of described extraction is exported from described power measurement interface A, with the second actual power of the first actual power and the second simple signal of measuring the first simple signal, wherein, the weak signal of described extraction is the preset ratio component of the 3rd two-tone signal, and the other parts in the 3rd two-tone signal except the weak signal of this extraction and described first close road signal; Power measurement interface A can connect the device or equipment of measuring power, such as power meter, power measurement is carried out, to determine the first actual power of the first simple signal, the second actual power of the second simple signal in the first conjunction road signal to the first simple signal in the weak signal extracted, the second simple signal.

When measuring the first actual power obtained and being not identical with above-mentioned predetermined power, adjust the first power amplifier 1022 and power amplification process is carried out to the first simple signal, to make this first actual power identical with described predetermined power;

When measuring the second actual power obtained and being not identical with above-mentioned predetermined power, adjust the second power amplifier 1023 and power amplification process is carried out to the second simple signal, to make this second actual power identical with described predetermined power.

When first actual power of the first simple signal, the second actual power of the second simple signal all being adjusted to described predetermined power by the first power amplifier 1022, second power amplifier 1023, namely the first conjunction road signal that the second coupler 10216 exports to the second duplexer 10217 reaches predetermined power;

Second coupler 10216 closes road signal by reach predetermined power first and exports the second duplexer 10217 to, second duplexer 10217 closes the test port output that road signal connects to (on multi-system combiner) by described first, and the first intermodulation product that the test port receiving connection returns, second duplexer 10217, when the receiving port of the second duplexer 10217 is connected with spectrum measuring device 101, exports the first intermodulation product received to described spectrum measuring device.

In above-described embodiment, power measurement interface A can connect outside power-measuring device (or equipment), power measurement is carried out to the signal that power measurement interface exports, the such as power meter of connecting test device external, this power meter can measure the power closing each simple signal in the signal of road, also can be that power measurement module is set in testing equipment, power measurement be carried out to the signal that power measurement interface exports, does not limit herein.

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

Therefore, optionally, as shown in Figure 6, the first test module can also comprise power measurement module 1026, described power measurement module 1026 is connected with power measurement interface A, and power measurement module 1026 is for carrying out power measurement to the signal being received from power measurement interface A.

Optionally, as shown in Figure 7, testing equipment can comprise separately a power measurement module 103, this power measurement module 103 is for being connected with the power measurement interface A in the first test module, power measurement is carried out to the signal being received from described power measurement interface, this power measurement module 103 can make power meter, can measure the power closing different simple signal in the signal of road simultaneously.

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

In M test module of testing equipment 100, each test module is all connected with switching device 104, and this switching device 104 is connected with spectrum measuring device 101;

This switching device 104 is in conducting state for making the target detection module in a described M test module and described spectrum measuring device, and make other test modules in a described M test module and spectrum measuring device 101 be in off state, the intensity of the intermodulation product returned to make test port corresponding to spectrum measuring device 101 pairs of target detection modules is measured, to determine the intermodulation suppression degree of the test port that the described test module that is connected is corresponding; Wherein, other test modules described refer to the test module in a described M test module except described target detection module.

It should be noted that, described target detection module is a test module in a described M test module, and from time dimension, described target detection module is change, such as, a described M test module comprises the first test module, second test module, 3rd test module ... M test module, if in the first moment, described target detection module is the first test module, then in the second moment, described target detection module can be a described M test module another test module except described first test module, such as the second test module or the 3rd test module etc.Concrete, target detection module is which test module in a described M test module on earth, determines by controlling described switching device 104.

Optionally, described switching device 104 can comprise at least one single pole multiple throw, the moved end of at least one single pole multiple throw described connects described spectrum measuring device, the total number X of the not moved end of at least one single pole multiple throw described is more than or equal to test module number N, the up output detections mouth of the first test module each connects a not moved end, and X is positive integer.

Optionally, described switching device 104 can also be switch matrix, as shown in Figure 9, this switch matrix comprises an output port and Y input port, Y is more than or equal to test module number N in testing equipment 100, and the up output detections mouth B of the first test module each connects the input port of a described switch matrix; The output port of this switch matrix connects spectrum measuring device 101, control unit in switch matrix is the switch of conducting between control switch input port and this output port, when control switch matrix makes conducting between an input port and this output port, namely conducting between the first test module that this input port is corresponding and spectrum measuring device 101, now, the intensity that spectrum measuring device 101 can test the intermodulation product exported from the first test module up output detections mouth B is got final product.

In the embodiment of the present invention, spectrum measuring device 101 can be existing frequency spectrograph, frequency spectrograph can measure intensity and the frequency of multiple intermodulation product in the signal of reception, in the present embodiment, frequency spectrograph can connect the up output detections mouth B in the input port of its own signal and the first test module by wire jumper, the intensity of the intermodulation product exported with the up output detections mouth B measured in the first test module, and then calculate intermodulation suppression degree, determine multi-system combiner properties of product.

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

In testing equipment embodiment of the present invention, because the various structures of the first passive module, the first test module also has various structures, when test module N number of in testing equipment 100 comprises at least one the first test module, when this first test module is a kind of in above-mentioned various structures, other test modules in the N number of test module of testing equipment except the first test module can be other possible structures of the first test module.

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

In the embodiment of the present invention, the testing equipment of any one situation described in testing equipment and above-described embodiment.

Multi-system combiner comprises M input port and K output port, and multi-system combiner is tried out in by the M road radiofrequency signal by M input port input, closes road and becomes K road mixed signal, exported by K output port, wherein, K≤M, K, M are positive integer;

M input port of multi-system combiner, namely needs to carry out by testing equipment M test port testing;

In described test macro, M test module in N number of test module of testing equipment is connected with a described M test port is man-to-man, and a described K output port is connected with described low intermodulation power absorption module respectively;

Thus, in the N number of test module of testing equipment, M the test module that should be connected one to one with M test port of multi-system combiner sends the transmit frequency band closing road signal, should be identical with the frequency range of the communication system that the corresponding test port connected defines;

In embodiment of the present invention test macro, the superfluous signal energy that low inter-modulated signal power model exports for absorbing described multi-system combiner K output port, this low inter-modulated signal power model can be low intermodulation load, does not limit herein.

Due to testing equipment after manufacture, N number of test module exports operator's Communications service frequency range of closing road signal corresponding and fixes, when testing M test port of multi-system combiner, in the N number of test module of testing equipment, select M test module for testing M test port, this M selected test module determines according to operator's Communications service frequency range of M test port definition of multi-system combiner, first test port of such as multi-system combiner is defined as CHINAUNICOM GSM1800/LTEFDD1.8G frequency range, then select to export the test module closing CHINAUNICOM GSM1800/LTE FDD1.8G frequency range corresponding to road signal to be in a test device connected with the first test port.

In the embodiment of the present invention, also provide a kind of method of testing, the executive agent of the method for testing that the embodiment of the present invention provides is testing equipment, and wherein, this testing equipment can be the testing equipment as above in embodiment described in any one.

Refer to Figure 11, the embodiment method of testing provided in the embodiment of the present invention, for testing the intermodulation product of each test port of multi-system combiner, described multi-system combiner comprises M test port, and M is positive integer, and described method comprises:

1101, testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, returns intermodulation product to make each test port in a described M test port;

In the present embodiment, described conjunction road signal has predetermined power and the frequency of described conjunction road signal is positioned at default frequency range, testing equipment is in different default frequency ranges to the frequency of the conjunction road signal that the different test ports on multi-system combiner export, this difference presets the communication service frequency range that frequency range can be different communication operator, also can be the different communication service frequency range of same communication operator, be used for testing test port multi-system combiner being defined as the different Communications service frequency range of these communication operators;

In some embodiments, described testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, can comprise:

To each test port in M test port, described testing equipment exports two-way simple signal: the first simple signal and the second simple signal, and the frequency of described first simple signal is in same default frequency range with the frequency of described second simple signal and frequency is different;

Described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process;

Described testing equipment carries out the process of conjunction road to described first simple signal through power amplification process and described second simple signal through power amplification process, obtains and export closing road signal;

Wherein, the frequency of described testing equipment to the conjunction road signal that test port each in M test port sends is in different default frequency range.

Further, described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process, can comprise:

Described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

When described first actual power and described predetermined power are not identical, described testing equipment carries out power amplification process according to described first actual power to described first simple signal, to make described first actual power identical with described predetermined power;

When described second actual power is not identical with described predetermined power, described testing equipment carries out power amplification process according to described second actual power to described second simple signal, to make described second actual power identical with described predetermined power.

Further, described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtain the first actual power of described first simple signal and the second actual power of described second simple signal, can comprise:

Described first simple signal and described second simple signal are carried out conjunction road by described testing equipment, obtain two-tone signal;

Described testing equipment carries out weak signal extraction to the described two-tone signal obtained, and obtain the weak signal of extraction and close road signal, the weak signal of described extraction is the preset ratio component of described two-tone signal;

Described testing equipment carries out power measurement to the weak signal of described extraction, with the second actual power of the first actual power and described second simple signal of determining described first simple signal.

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

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

1103, the intensity of testing equipment to the intermodulation product that described target detection port returns is measured, to determine the intermodulation suppression degree of described target detection port.

In the embodiment of the present invention, testing equipment can be connected with described M test port one_to_one corresponding, the conjunction road signal of predetermined power is sent respectively to multi-system combiner to be tested, can measure the intensity of the intermodulation product that any one test module in a described M test module exports, any test port of multi-system combiner can be measured, and testing equipment need not be changed, make the test of multiple port simpler, simultaneously because the test port of multi-system combiner all have input conjunction road, a road signal, simulate each input port of multi-system combiner simultaneously input signal time scene, make test more closing to reality.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works of method, implementation procedure, with reference to the corresponding process in aforementioned device embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.

The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Accompanying drawing explanation

Fig. 1 is an embodiment schematic diagram of testing equipment in the embodiment of the present invention;

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

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

Fig. 4 is an embodiment schematic diagram of the first passive module in the first test module of testing equipment in the embodiment of the present invention;

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

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

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

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

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

Figure 10 is an embodiment schematic diagram of test macro in the embodiment of the present invention;

Figure 11 is an embodiment schematic diagram of method of testing in the embodiment of the present invention.

Embodiment

Embodiments provide a kind of method of testing, equipment and system, simulate each input port of multi-system combiner simultaneously input signal time scene, make test more closing to reality, and any test port of multi-system combiner can be measured, and testing equipment need not be changed, make the test of multiple port more simple, efficient.

The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.

Claims (15)

1. a testing equipment, it is characterized in that, for testing the intermodulation product of multi-system combiner test port, described multi-system combiner comprises M test port, described testing equipment comprises spectrum measuring device and N number of test module, N >=M >=2 and described N and M is integer;

M test module in described N number of test module is used for being connected with a described M test port is man-to-man;

In a described M test module, each test module is used for test port output conjunction road signal corresponding in a described M test port, to make the test module that in a described M test port, each test port is corresponding in a described M test module return intermodulation product, described conjunction road signal has predetermined power and the frequency of described conjunction road signal is positioned at default frequency range;

Described spectrum measuring device is used for being connected with a test module in a described M test module, and the intensity of intermodulation product that the test port corresponding to the described test module be connected returns is measured, to determine the intermodulation suppression degree of the test port that the described test module that is connected is corresponding.

2. testing equipment according to claim 1, is characterized in that, a described M test module comprises at least one the first test module;

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

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

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

Described first signal source is used for sending the first simple signal to described first power amplifier, and the frequency of described first simple signal is in first and presets in frequency range;

Described first power amplifier is for receiving described first simple signal, amplification process is carried out to described first simple signal, to make the power of described first simple signal identical with described predetermined power, and described first simple signal through power amplification process is exported to described first passive module;

Described secondary signal source is used for sending the second simple signal to described second power amplifier, and the frequency of described second simple signal is in described first and presets in frequency range, and the frequency of described first simple signal is different with the frequency of described second simple signal;

Described second power amplifier is for receiving described second simple signal, amplification process is carried out to described second simple signal, to make the power of described second simple signal identical with described predetermined power, and described second simple signal through power amplification process is exported to described first passive module;

Described first passive module is used for carrying out the process of conjunction road, to obtain the first conjunction road signal to described first simple signal received and described second simple signal;

The test port of described first passive module also for being connected with described first passive module in described multi-system combiner exports described first and closes road signal, the first intermodulation product is returned to make the test port be connected with described first passive module in described multi-system combiner, and when described first passive module is connected with described spectrum measuring device, export described first intermodulation product received to described spectrum measuring device.

3. testing equipment according to claim 2, is characterized in that,

Described first passive module also for carrying out power measurement to described first simple signal in described first conjunction road signal, described second simple signal respectively, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

When described first actual power and described predetermined power are not identical, described first power amplifier also for carrying out power amplification process to described first simple signal, to make described first actual power identical with described predetermined power;

When described second actual power and described predetermined power are not identical, described second power amplifier also for carrying out power amplification process to described second simple signal, to make described second actual power identical with described predetermined power.

4. the testing equipment according to Claims 2 or 3, is characterized in that,

Described first passive module comprises 3dB electric bridge, the first load, the first coupler and first duplexer;

The first input end mouth of described 3dB electric bridge connects described first power amplifier, and the second input port of described 3dB electric bridge connects described second power amplifier; First output port of described 3dB electric bridge is connected with described first load, and the second output port of described 3dB electric bridge connects the first port of described first coupler;

Second port of described first coupler connects the emission port of described first duplexer; The public port of described first duplexer is used for being connected with a test port of described multi-system combiner, and the receiving port of described first duplexer is used for being connected with described spectrum measuring device; 3rd port of described first coupler is power measurement interface;

Described 3dB electric bridge is used for described first simple signal and described second simple signal being carried out the process of conjunction road, obtain the first two-tone signal and the second two-tone signal, described first two-tone signal is input to described first load by the first output port of described 3dB electric bridge, and described second two-tone signal outputs to described first coupler by the second output port of described 3dB electric bridge;

Described first two-tone signal that described first load is used for receiving carries out power absorption;

Described second two-tone signal that described first coupler is used for receiving carries out weak signal extraction, the weak signal and described first obtaining extracting closes road signal, the weak signal extracted is exported from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal, wherein, the weak signal of described extraction is preset ratio component in described second two-tone signal;

Described first coupler also exports described first duplexer to for closing road signal by described first;

Described first duplexer is used for closing road signal by described first and exports to the test port connected, and described first intermodulation product that the test port that reception connects returns;

Described first duplexer, also for when the receiving port of described first duplexer is connected with described spectrum measuring device, exports described first intermodulation product received to described spectrum measuring device.

5. the testing equipment according to Claims 2 or 3, is characterized in that,

Described first passive module comprises pilot frequency combiner, the second coupler and the second duplexer;

Described pilot frequency combiner comprises first input end mouth, the second input port, output port, and the first input end mouth of described pilot frequency combiner connects described first power amplifier, and described second input port connects described second power amplifier; The output port of described pilot frequency combiner connects the first port of described second coupler;

Second port of described second coupler connects the emission port of described second duplexer; The public port of described second duplexer is used for being connected with a test port of described multi-system combiner, the receiving port of described second duplexer is used for being connected with described spectrum measuring device, and the 3rd port of described second coupler is power measurement interface;

Described pilot frequency combiner is used for described first simple signal and described second simple signal being carried out the process of conjunction road, obtains the 3rd two-tone signal, and outputs to described second coupler;

Described 3rd two-tone signal that described second coupler is used for from receiving carries out weak signal extraction, the weak signal and described first obtaining extracting closes road signal, the weak signal of described extraction is exported from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal, wherein, the weak signal of described extraction is the preset ratio component of described 3rd two-tone signal;

Described second coupler also exports described second duplexer to for closing road signal by described first;

Described second duplexer is used for closing road signal by described first and exports to the test port connected, and described first intermodulation product that the test port receiving connection returns, when the receiving port of described second duplexer is connected with described spectrum measuring device, export described first intermodulation product received to described spectrum measuring device.

6. the testing equipment according to claim 4 or 5, it is characterized in that, also power measurement module is comprised in the first test module described, described power measurement module is connected with described power measurement interface, and described power measurement module is used for carrying out power measurement to the signal being received from described power measurement interface.

7. the testing equipment according to claim 4 or 5, it is characterized in that, described testing equipment also comprises power measurement module, described power measurement module is used for being connected with the described power measurement interface in the first test module described in, power measurement is carried out to the signal being received from described power measurement interface, with the second actual power of the first actual power and described second simple signal of measuring described first simple signal.

8. testing equipment according to claim 7, is characterized in that, described power measurement module is described spectrum measuring device.

9., according to described testing equipment arbitrary in claim 1 to 8, it is characterized in that, described testing equipment also comprises switching device;

In a described M test module, each test module is all connected with described switching device, and described switching device is connected with described spectrum measuring device;

Described switching device is in conducting state for making the target detection module in a described M test module and described spectrum measuring device, and make other test modules in a described M test module and described spectrum measuring device be in off state, the intensity of the intermodulation product returned with the test port making described spectrum measuring device corresponding to target detection module is measured, to determine the intermodulation suppression degree of the test port that the described test module that is connected is corresponding; Wherein, other test modules described refer to the test module in a described M test module except described target detection module.

10., according to described testing equipment arbitrary in claim 1 to 9, it is characterized in that, described spectrum measuring device is frequency spectrograph.

11. 1 kinds of test macros, is characterized in that, comprise testing equipment, multi-system combiner and low intermodulation power absorption module, and described multi-system combiner comprises M test port and K output port, K≤M and K, M are positive integer; Wherein, described testing equipment is as the testing equipment as described in arbitrary in claim 1 to 10;

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

The superfluous signal energy that described low inter-modulated signal power model exports for absorbing described multi-system combiner.

12. 1 kinds of method of testings, is characterized in that, for testing the intermodulation product of each test port of multi-system combiner, described multi-system combiner comprises M test port, M >=2 and M is integer, and described method comprises:

Testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, to make each test port in a described M test port return intermodulation product, described conjunction road signal has predetermined power and the frequency of described conjunction road signal is positioned at default frequency range;

Described testing equipment obtains the intermodulation product that on described multi-system combiner, target detection port returns, and described target detection port is any one in a described M test port;

The intensity of described testing equipment to the intermodulation product that described target detection port returns is measured, to determine the intermodulation suppression degree of described target detection port.

13. methods according to claim 12, is characterized in that, described testing equipment exports respectively to the test port of the M on described multi-system combiner and closes road signal, comprising:

To each test port in M test port, described testing equipment exports two-way simple signal: the first simple signal and the second simple signal, and the frequency of described first simple signal is in same default frequency range with the frequency of described second simple signal and frequency is different;

Described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process;

Described testing equipment carries out the process of conjunction road to described first simple signal through power amplification process and described second simple signal through power amplification process, obtains and export closing road signal;

Wherein, the frequency of described testing equipment to the conjunction road signal that test port each in M test port sends is in different default frequency range.

14. methods according to claim 13, it is characterized in that, described testing equipment carries out power amplification process to described first simple signal and described second simple signal respectively, to make the power of described first simple signal through power amplification process identical with described predetermined power, and identical with described predetermined power through the power of described second simple signal of power amplification process, comprising:

Described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtains the first actual power of described first simple signal and the second actual power of described second simple signal;

When described first actual power and described predetermined power are not identical, described testing equipment carries out power amplification process to described first simple signal, to make described first actual power identical with described predetermined power;

When described second actual power is not identical with described predetermined power, described testing equipment carries out power amplification process to described second simple signal, to make described second actual power identical with described predetermined power.

15. methods according to claim 14, it is characterized in that, described testing equipment carries out power measurement to described first simple signal in the signal of described conjunction road, described second simple signal, obtain the first actual power of described first simple signal and the second actual power of described second simple signal, comprising:

Described first simple signal and described second simple signal are carried out conjunction road by described testing equipment, obtain two-tone signal;

Described testing equipment carries out weak signal extraction to the described two-tone signal obtained, and obtain the weak signal of extraction and close road signal, the weak signal of described extraction is the preset ratio component of described two-tone signal;

Described testing equipment carries out power measurement to the weak signal of described extraction, with the second actual power of the first actual power and described second simple signal of determining described first simple signal.