CN101478353A - Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test - Google Patents
Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test Download PDFInfo
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- CN101478353A CN101478353A CNA2009100771925A CN200910077192A CN101478353A CN 101478353 A CN101478353 A CN 101478353A CN A2009100771925 A CNA2009100771925 A CN A2009100771925A CN 200910077192 A CN200910077192 A CN 200910077192A CN 101478353 A CN101478353 A CN 101478353A
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Abstract
The invention provides a radio-frequency unit used for the radio-frequency automatic test of a wireless communication base station. The radio-frequency unit comprises radio-frequency coaxial switches, radio-frequency coaxial attenuators, a filter, a circulator, an isolator and a RS-232 communication interface control circuit board. The parts are connected together via rigid radio-frequency coaxial cables. The radio-frequency unit receives a command sent from a PC equipped with control software to control the close state of each switch, thereby achieving the repaid switch among the test links. The control command set of the radio-frequency unit is clear and understandable and is rapidly applied to the radio-frequency test system after the simple secondary development. The radio-frequency unit has the advantages of high switching speed, high reliability, good repeatability of the characteristics of the radio-frequency circuit, strong anti-interference capability, easy control and high performance-to-price ratio.
Description
Technical field
The present invention relates generally to radio frequency unit, relate more specifically to a kind of radio frequency unit that can be used for the radio communication base station radio frequency automatic test.
Background technology
Base station (BS) is the high power multichannel two-way radio transmitter that is fixed on the locality.Be used for communication of low power channel double-direction radio such as mobile phone and mobile phone; The basic function of repeater (Repeater) is a radio-frequency power booster, plays a kind of radio transmission trunking that signal strengthens in the wireless communication transmissions process; In mobile communication system, the repeater is between base station and travelling carriage, and relay transmission bi-directional RF signal between the two is used for filling up the base station coverage hole or extends the area of coverage.The repeater is different with the base station, does not have baseband processing circuitry, and not demodulation wireless signal does not have capacity extension; Characteristics such as the repeater is because its small investment, and is simple in structure, easy for installation are widely used in some weak signal zone or signal blind zones, have become an important selection of radio network optimization.
Employed radio frequency unit in the radio frequency testing for base station and repeater, traditional method depend on manual connection often and switch radio frequency link, or use equipment supplier such as Agilent, R﹠amp; The standard grammed switch unit that company produced such as S; The shortcoming of using manual ways of connecting to switch radio frequency link is comparatively tangible, and that is exactly obviously to prolong the testing time, brings the repeated bad of artificial error and test result easily; If use the grammed switch unit of standard to set up the radio frequency unit of repeater, base station, to be that the system complex degree is too high inject capital into hugely its shortcoming simultaneously, makes testing cost high.
Therefore, in view of the foregoing, needing badly provides the radio frequency unit that can be used for the radio communication base station radio frequency automatic test that a kind of switch speed is fast, reliability is high, antijamming capability is strong, control method is easy, thereby avoids because the shortcoming of inefficiency that the method for use discrete device manual test is brought and test result repeatability poor reliability.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of radio frequency unit, is used for the radio communication base station radio frequency automatic test, it is characterized in that comprising:
At least one radio-frequency (RF) coaxial switch is used for the switching between each test link;
The radio-frequency (RF) coaxial attenuator is used for the high-power signal decay to input;
Filter is used for the spuious signal power that waits in the test filtering emission band;
Circulator is used for intermodulation testing, and the coupling two paths of signals prevents signals reverse entering signal generator;
Isolator is used for intermodulation testing, prevents reverse signal entering signal generator; And
External control interface and control circuit board, described radio frequency unit receives the instruction that is sent by the PC that Control Software is housed by external control interface, control the closure state of inner each the radio-frequency (RF) coaxial switch of radio frequency unit by control circuit board, realize the quick switching between each test link.
According to a preferred embodiment of the invention, this radio frequency unit uses built-in 12V DC power supplier power supply.
According to a preferred embodiment of the invention, connect by the rigidity radio frequency coaxial-cable between each device of this radio frequency unit.
According to a preferred embodiment of the invention, described external control interface is a rs-232 standard industry interface.
According to a preferred embodiment of the invention, described control circuit board is the RS-232 interface control circuit board.
According to a preferred embodiment of the invention, this radio frequency unit is used for the radio frequency automatic test of CDMA2000 base station.
According to a preferred embodiment of the invention, this radio frequency unit is used for the radio frequency automatic test of WCDMA base station.
According to a preferred embodiment of the invention, this radio frequency unit is used for the radio frequency automatic test of cdma base station/repeater.
According to a preferred embodiment of the invention, this radio frequency unit is used for the radio frequency automatic test of GSM base station/repeater.
According to a preferred embodiment of the invention, this radio frequency unit is used for the radio frequency automatic test of PHS base station.
According to a further aspect in the invention, provide a kind of radio frequency automatic test system for wireless communication base station, comprising:
The radio frequency testing unit is used for the radio communication base station radio frequency automatic test, comprises at least one radio-frequency (RF) coaxial switch;
RS-232 interface, the communication between charge control circuit and the PC, the instruction character string of reception PC sends to control circuit again; After the state return information of each radio-frequency (RF) coaxial switch, RS-232 interface returns to PC with character string information again in control circuit obtains the radio frequency testing unit;
Power module for each radio-frequency (RF) coaxial switch power supply in control circuit and the radio frequency testing unit, drives the action of described each radio-frequency (RF) coaxial switch; And
Control circuit according to the character string instruction of RS-232 interface, is provided with the Transistor-Transistor Logic level of the winding displacement socket on the circuit board, and these winding displacement socket stitch connect each control pin of each radio-frequency (RF) coaxial switch in the radio frequency testing unit by winding displacement.
According to a preferred embodiment of the invention, described radio frequency testing unit also comprises filter, attenuator, circulator and isolator, constitutes a plurality of test links with described radio-frequency (RF) coaxial switch.
According to a preferred embodiment of the invention, described radio frequency testing unit comprises filter, circulator, attenuator and the isolator of radio-frequency (RF) coaxial switch and different size, described radio-frequency (RF) coaxial switch uses Transistor-Transistor Logic level control, discrete each filter, circulator, attenuator and isolator and radio frequency coaxial-cable are combined, and described radio-frequency (RF) switch has just constituted different test links in different positions.
According to a preferred embodiment of the invention, the test link in the described radio frequency testing unit comprises straight-through link, intermodulation testing link, conduction stray test link or noise factor test link.
According to a preferred embodiment of the invention, described radio frequency testing unit is tested radio communication base station/repeater.
Use radio frequency unit of the present invention, can avoid fully because the shortcoming of inefficiency that the method for use discrete device manual test is brought and test result repeatability poor reliability; This radio frequency unit uses built-in 12V DC power supplier power supply, and external control interface is a rs-232 standard industry interface, and the control command collection is clear understandable, only needs just can be applied to fast in the middle of the radio frequency test system through simple secondary development; The advantage of this radio frequency unit mainly is: switch speed is fast, reliability is high, radio circuit characteristic good reproducibility, antijamming capability is strong, control method is easy and ratio of performance to price advantages of higher, therefore has the industry promotional value.
Though will describe the present invention in conjunction with some exemplary enforcements and using method hereinafter, and it will be appreciated by those skilled in the art that to not being intended to the present invention is limited to these embodiment.Otherwise, be intended to cover all substitutes, correction and the equivalent that are included in defined spirit of the present invention of appending claims and the scope.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent,, perhaps can obtain instruction from the practice of the present invention based on being conspicuous to those skilled in the art to investigating hereinafter.Target of the present invention and other advantages can be passed through following specification, claims, and the specifically noted structure realizes and obtains in the accompanying drawing.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 shows according to radio frequency automatic test system for wireless communication base station of the present invention;
Fig. 2 shows according to radio frequency unit panel of the present invention;
Fig. 3 is the cut-away view according to radio frequency unit of the present invention;
Fig. 4 is according to the present invention, by instrument and the common base station/repeater radio frequency test systems formed of radio frequency unit such as signal generator, spectrum analyzer, network analyzer and power meters;
Fig. 5 show according to of the present invention spuious/intermodulation testing filter/attenuator group sequence chart;
Fig. 6 shows the power supply wiring pinouts according to radio frequency unit of the present invention; And
Fig. 7 shows according to control circuit board of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.It should be noted that execution mode according to radio frequency unit of the present invention as just example, but the invention is not restricted to this embodiment.
According to a preferred embodiment of the invention, this radio frequency unit mainly is made up of radio-frequency (RF) coaxial switch, radio-frequency (RF) coaxial attenuator, filter, circulator, isolator and RS-232 interface control circuit board, connect by the rigidity radio frequency coaxial-cable between each device, use built-in 12V DC power supplier power supply, external control interface is a rs-232 standard industry interface, the closure state of inner each switch is controlled in the instruction that reception is sent by the PC that Control Software is housed, and realizes the quick switching between each test link.Radio frequency unit according to the present invention is mainly used in the radio frequency automatic test to CDMA2000 base station common in the wireless communication system, WCDMA base station, cdma base station/repeater, GSM base station/repeater and PHS base station, and has carried out optimal design at the present base station of China/repeater radio frequency industry examination criteria and international standard etc.
Fig. 1 shows according to radio frequency automatic test system for wireless communication base station of the present invention.Being described below of each functional module of the present invention:
The function of RS-232 interface is the communication between charge control circuit and the PC, receives the instruction character string of PC, sends to control circuit again; After control circuit obtained the state return information of radio-frequency (RF) coaxial switch, RS-232 interface returned to PC with character string information again;
The function of power module is for control circuit and the power supply of radio-frequency (RF) coaxial switch, drives the action of radio-frequency (RF) coaxial switch;
The function of control circuit is the character string instruction according to RS-232 interface, and the Transistor-Transistor Logic level of the winding displacement socket on the circuit board is set, and these winding displacement socket stitch connect each control pin of radio-frequency (RF) coaxial switch by winding displacement;
Constitute the radio frequency testing link by radio-frequency (RF) coaxial switch, filter, attenuator, circulator and isolator, comprise straight-through link, intermodulation testing link, conduction stray test link and noise factor test link etc., be used for the radio frequency testing of radio communication base station/repeater.
Fig. 2 shows according to radio frequency unit panel schematic diagram of the present invention.Referring to Fig. 2, the port on the panel is respectively:
RF Input (radio frequency input): the emission port (RFOUTPORT) of equipment under test (base station/repeater) is connected to test macro by this interface;
RF Output (radio frequency output): the output port of signal source, generally do not connect, offer tested repeater source signal when measuring the repeater;
SG (signal source): the signal source input port of radio frequency unit should be connected to the system signal source;
SA Input (spectrum analyzer input): the RF input port that should be connected to the system spectrum analyzer;
NA Input (network analyzer input): the RF input port that should be connected to the grid analyzer;
12V DC (12V DC interface): should be connected to DC power supply (12V).
Next, with reference to Fig. 3, show internal structure according to radio frequency unit of the present invention.This radio frequency unit is made up of radio-frequency (RF) coaxial switch, radio-frequency (RF) coaxial attenuator, filter, circulator, isolator and RS-232 interface control circuit board, connect by the rigidity radio frequency coaxial-cable between each device, use built-in 12V DC power supplier to be radio-frequency (RF) coaxial switch and control circuit power supply.
As shown in Figure 3; the transmitter intermodulation part of detecting is divided into 3 parts among the figure; difference corresponding GSM900MHz, GSM1800MHz and WCDMA transmitter intermodulation test event, the effect of 3dB (100W) attenuator are to exist under the situation of excessive power radiofrequency signal the device of radio frequency unit inside and the instrument of outside are played a protective role.The latter half among Fig. 3 is mainly by two the ten filtering/decay paths that select a radio-frequency (RF) coaxial switch and 8 filters and 2 attenuators (55dB and 30dB) to form, its median filter is respectively: 870MHz～880MHz band stop filter, 1805MHz～1880MHz is with resistance, 806MHz～821MHz/885MHz～915MHz band pass filter, 880MHz～915MHz/1710MHz～1785MHz band pass filter, 885MHz～915MHz band stop filter, 930MHz～960MHz/1710MHz～1785MHz band stop filter, 2110MHz～2170MHz band stop filter, 825MHz～835MHz band stop filter, 3.5GHz high pass filter, main effect is the spuious test event that is used for base station/repeater, and the effect of 55dB and 30dB attenuator is mainly used in the middle of the transmitter intermodulation test.
Connect by rigidity or semi-rigid radio frequency cable between each radio-frequency devices in the middle of Fig. 3, the signal that signal source is sent enters into 4 through " signal source/SIGNAL GENERATOR " interface and selects in the middle of the 1 radio-frequency (RF) switch S2/J8, can enter into after selecting through the switching of switch S 2/J8 in the middle of GSM900MHz intermodulation testing module, GSM1800MHz intermodulation testing module or the WCDMA module; Simultaneously, the signal of tested base station/repeater can enter within the radio frequency unit through " rf inputs mouth/RF INPUT ", decay through the 3dB attenuator, select 1 radio-frequency (RF) switch S1/J7 to enter in the middle of the intermodulation testing module by 4, the signal that sends with aforesaid signal source carries out intermodulation, and the inter-modulated signal of generation enters in the middle of the next switch S 3/J5; In the intermodulation module, power amplifier plays the effect of lifting signal power, and isolator plays the effect that intercepts reverse signal, and circulator plays the effect that intercepts reverse signal and intermodulation; Switch S 3/J1, S5/J9, S6/J10 and S7/J6 play the effect that path is selected, and the filter between switch S 5/J9 and the S6/J10 mainly is the effect of filtering special frequency band signal in the middle of spuious test, and the through path of other tests is provided; Attenuator is high-power signal to be carried out effective attenuation when being used to carry out power test, makes test instrumentation obtain safeguard protection.Next, will the trend and the operation principle of signal flow be described.
As shown in Figure 4, the base station of being made up of jointly instrument such as signal generator, spectrum analyzer, network analyzer and power meter and radio frequency unit/repeater radio frequency test system can be connected with equipment under tests such as GSM base station, cdma base station, CDMA repeaters respectively; Automatic test for the base station, with the GSM base station is example, use radio frequency coaxial-cable to be connected with the RF INPUT port of radio frequency unit the RF OUT port of tested base station, the RF OUT port of signal generator is connected with the SG port of radio frequency unit, the RFINPUT port of spectrum analyzer is connected with SA INPUT port, can carry out following radio frequency testing project:
Table 1
| Test event | Radio frequency link is selected |
| 1.RF carrier wave average transmit power | J7：FS，J1：FS，J9：FS，J10：FS，J6： |
| 2. transmitting power temporal envelope | J7：FS，J1：FS，J9：FS，J10：FS，J6： |
| 3. phase error and average frequency error | J7：FS，J1：FS，J9：FS，J10：FS，J6： |
| 4. continuous modulation spectrum | J7：FS，J1：FS，J9：FS，J10：FS，J6：FS |
| 5. switch the transient state frequency spectrum | J7：FS，J1：FS，J9：FS，J10：FS，J6：FS |
| 6. spuious in the band | J7：FS J1：FS J9：10J10：10 J6： |
| 7. intermodulation decay | 900MHz： J7：4，J8：FS，J5：FS，J1：2，J9：FS，J10：FS，J6：FS 1800MHz： J7：3，J8：2，J5：2，J1：2，J9：FS，J10：FS，J6：FS |
| 8.BSS interior intermodulation decay | J7：FS，J1：FS，J9：FS，J10：FS，J6： |
| 9. band is outer spuious | J7:FS, J1:FS, J9:5J10:5, J6:FS (940 band resistance) ... |
The left side one row are test events in the middle of the table 1, the right one row are that the radio frequency link of corresponding test event is selected, with first RF carrier wave average transmit power is example, switch J7 is changed to FS (FAIL SAFE) position, rf inputs mouth and the 3dB attenuator of the signal of the RF OUT port of base station output by radio frequency unit enters into the 4 C ports that select 1 switch J7, the link selection of switch J7 is FS, then signal arrives the FS end of switch J1 by switch J7, the controlled selection of J1 FS end, then signal selects the C port of 1 switch J9 by switch J1 arrival 10, switch J9 and J10 all select the FS end, signal continues to be transferred to the C port of switch J10,3 select 1 switch J6 to select FS, signal continues conduction and arrives frequency spectrograph input (SAINPUT), frequency spectrograph can carry out analysis to measure to the GSM modulation signal that receives, measured performance number add by way of the insertion loss balancing of link, then obtained the radio-frequency power value that the GSM base station is launched.Concrete link selection can no longer be repeated in this description referring to appendix A.
The detailed arrangement situation of bank of filters of Fig. 3 the latter half and attenuator as shown in Figure 5, Fig. 5 be show in detail according to of the present invention spuious/intermodulation testing filter/attenuator group sequence chart; Be followed successively by from top to bottom:
(1) 870MHz～880MHz band stop filter is used for the spuious test of CDMA repeater;
(2) 1805MHz～1880MHz band stop filter is used for the outer spuious test of band of GSM1800 base station and repeater;
(3) 806MHz～821MHz/885MHz～915MHz band pass filter is used for the spuious test in CDMA repeater;
(4) 880MHz～915MHz/1710MHz～1785MHz band pass filter is used for the spuious test of GSM receiving belt;
(5) 885MHz～915MHz filter is used for the outer spuious test of GSM900 repeater band;
(6) 930MHz～960MHz/1710MHz～1785MHz band stop filter is used for the descending and outer spuious test of GSM900 direct end uplink band in GSM900 base station/repeater;
(7) 2110MHz～2170MHz band stop filter is used for the spuious test of WCDMA/CDMA2000, and 825MHz～835MHz band stop filter is used for the spuious test of CDMA direct end uplink;
(8) 3.5GHz high pass filter is used for the spuious test of high frequency;
(9) (10) 55dB, 30dB attenuator are used for intermodulation testing;
Now, will the logic control mode of radio frequency unit be described in detail.Carry out communication by the RS-232 serial line interface between radio frequency unit and the PC, PC end serial port setting must be consistent with control circuit board could normal communication, specifically is set to: the 8bit data, and 1bit stops, no parity check, baud rate (Baud Rate) 19200.
1. wiring explanation
Referring to Fig. 6, show power supply wiring explanation according to radio frequency unit of the present invention.Figure 6 illustrates the position on the plate, its power supply wiring pin is as follows:
J11 is the HF switch working power on the printed circuit board (PCB), and 1 pin is direct current+12V, and 2 pin are that (other ground wire is not communicated with PGND on this PGND and the plank.But at the general supply place, 1 of PGND and GND are altogether).J12 is the working power of control circuit, 1 pin be direct current+6.5V～+ 12V, 2 pin are GND.
For the thread switching control of radio frequency unit, circuit board is controlled four kinds of switches altogether, and definition is as table 2 on control board, and J1-J10 position onboard as shown in Figure 7.
Table 2 control board switch pin definition list
J13 is a RS-232 control line socket, and its concrete pin definitions is:
J13 color DB9 interface
The green P2 of P8
P7 orange P3
P1 ash P5
2. control command explanation
Control command collection between PC and the control circuit board comprises two basic statements, carries out the function that writes and read respectively, specifies as follows:
2.1 being set, switch arrives a certain state:
Form: ' wxyg '
Illustrate:
First is that the w representative is write, and the position of switch just is set.
The address x that second x is switch can be 0-9, and what respective socket J1-J10 was connected respectively is a HF switch (0 corresponding J1,1 corresponding J2,2 corresponding J3.....).
The 3rd position that on behalf of this switch, y will be provided with is 0 or 1 for the value of 2S series switch (J1-J4) y, and for 3SS series switch (J5-J6), the value of y is 0-2, for 4SS series switch (J7-J8)
The value of y is 0-3, and for 10HS series switch (J9-J10), the y value is 0-9.
The end mark of the 4th g for ordering.
Annotate: small letter all used in letter.
2.2 read the state of assigned switch:
Form: ' rxg '
Illustrate:
First r representative read, and just reads the state of assigned switch.
The address of second x representation switch.
The 3rd g is end mark.
After this type of read command was carried out, PC can receive character string yg, and wherein y is the state of assigned switch.
Table 2 state truth table
If the value of reading back is wrong for ' 0g ' illustrative system state acquisition part, need to handle or rewrite.
3. mistake indication.
If PC receives that ' e0g ' represents the command word error of transmission.
The above is the description of printed circuit board (PCB) function and design, and this circuit board plays the effect that receives instruction and Returning switch state between PC and switch, be the maincenter of radio-frequency (RF) switch unit, can well adapt to the testing requirement of domestic relevant industries examination criteria.
At last, will the application of radio frequency unit in the middle of base station/repeater radio frequency automatic test be described according to the industry examination criteria.
At present to the detection of all kinds of base station/repeaters common in the middle of the wireless communication system and test mainly according to the relevant regulations of base station/repeater radio frequency industry examination criteria, international standard and the national radio committee, this radio frequency unit can be applicable to all kinds of base stations/repeater testing standard listed in the table 3 fully, the standard that has contained 2G～3G main flow base station/repeater, and can carry out synchronous upgrading and function expansion according to the more new development of industry standard, satisfy new test needs.
Table 3 base station/repeater institute establishing criteria table
| Sequence number | Tested | Establishing criteria | |
| 1 | The GSM/GPRS base station | YD/T 883-1999 " 900MHz TDMA digital mobile cellular telecommunication net base station radio device specifications and method of testing " | |
| 2 | The GSM repeater | YD/T 952-1998 " specification requirement of 900MHz direct amplification machine and method of measurement " | |
| 3 | Cdma base station | YD/T 1047-2000 " the total test specification of 800MHz CDMA digital mobile cellular telecommunication net equipment: base |
| The part of standing " | ||
| 4 | The CDMA repeater | YD/T 1241-2002 " 800MHz CDMA digital mobile cellular telecommunication net repeater specification requirement and method of testing " |
| 5 | The WCDMA base station | 3GPP TS25.141 Technical Specification Group Radio Access Networks； Base Station(BS)conformance testing(FDD)(Release4) |
| 6 | The CDMA2000 base station | TIA/EIA-97-C Recommended Minimum Performance Standards for Base Stations Supporting Dual-Mode Spread |
| 7 | The PHS base station | RCR STD-28 state does not have pipe [1996] No. 20 " about the notice of planning of 2000MHz frequency range part ground radio traffic and relevant issues " |
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Appendix A base station/repeater radio frequency automatic test radio frequency link is provided with
(1) CDMA (IS95) base station
1. frequency error
The base station only sends pilot channel
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
2. pilot tone time tolerance limit
The base station only sends pilot channel
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
3. pilot channel is to Code Channel time tolerance limit
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
4. pilot channel is to Code Channel time tolerance limit
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
5. waveform quality
The base station only sends pilot channel
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
6. gross power
Switch connects:
1). the base station power output 〉=25dBm (use power meter):
J7：FS
J1：FS
J9：2
J10：2
J6：3
2). base station power output＜25dBm (use spectrum analyzer):
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
7. pilot power
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
8. code domain power
Switch connects:
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
9. conduction stray emission
Switch connects (band is outer):
| Frequency range | The test bandwidth | Limiting value | Switch connects |
| 9kHz～150kHz | 1kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
| 150kHz～30MHz | 10kIIz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
| 30MHz～1GHz (30M-870MHz， 880-1GHz) | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
| 1GHz～12.75GHz | 1MHz | -36dBm | More than the J7:FS J1:FS J9:10 J10:10 J6:FS 3GHz: J7:FS J1:FS J9:3 J10:3 J6:FS |
| 806MHz～821MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS |
| 885MHz～915MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS |
| 930MHz～960MHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
| 1.7GHz～1.92GHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
| 3.4GHz～3.53GHz | 100kHz | -47dBm | J7：FS J1：FS J9：3 J10：3 J6：FS |
| Emission working band both sides respectively add the noise level in the 1MHz transition band | 100kHz | -22dBm | J7：FS J1：FS J9：10 J10：10 J6：FS |
Be expressed as follows by frequency range
| Frequency range | The test bandwidth | Limiting value | Switch connects | Remarks |
| 9kHz～150kHz | 1kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 150kHz～30MHz | 10kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 30MHz～<806MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 806MHz～821MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS | Use band pass filter |
| >821MHz～<869MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 869～870MHz | 100kHz | -22dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 880～881MHz | 100kHz | -22dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 881～885MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 885MHz～915MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS | Use band pass filter |
| 915MHz～930MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 930MHz～960MHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 960～1000MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1GHz～1.7GHz | 1MHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1.7GHz～1.92GHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1.92GHz～34GHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 3.4GHz～3.53GHz | 100kHz | -47dBm | J7：FS J1：FS J9：3 J10：3 J6：FS | Use high pass filter |
| 3.53GHz～12.75GHz | 1MHz | -36dBm | J7：FS J1：FS J9：3 J10：3 J6：FS | Use high pass filter |
Spuious in the band:
Switch is selected:
| J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
(2) GSM (GPRS) base station
1.RF carrier wave average transmit power
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
2. transmitting power temporal envelope
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
3. phase error and average frequency error
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
4. continuous modulation spectrum
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
5. switch the transient state frequency spectrum
J7：FS
J1：FS
J9：FS
J10：FS
J6：FS
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
6. spuious in the band
7. intermodulation decay
900MHz：
Switch: J7:4, J8:FS, J5:FS, J1:2, J9:FS, J10:FS, J6:FS (J7 moves at last) 1800MHz:
Switch: J7:3, J8:2, J5:2, J1:2, J9:FS, J10:FS, J6:FS (J7 moves at last)
8.BSS interior intermodulation decay
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
9. band is outer spuious
1) outside the band:
(GSM900MHz：
In the receiving belt:
| 890～915MHz | 100kHz | -81～-98dBm | VBW:100kHz, SWEEP minimum: 75ms is averaged switch: J7:FS 200 times, J1:FS, J9:7J10:7, J6:FS (band is logical) |
GSM1800
In the receiving belt:
| 1710～1785MHz | 100kHz | -86～-98dBm | VBW:100kHz, SWEEP minimum: 75ms is averaged switch: J7:FS 200 times, J1:FS, J9:7J10:7, J6:FS (band is logical) |
(3) WCDMA
1. base station maximum work output
5 switches: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
2. basic Common Pilot Channel (P-CPICH) power accuracy
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
10
3. frequency tolerance
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
15 4. power control step-sizes
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
5. the dynamic range of power control
20 switches: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
6. the dynamic adjusting range of total power
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
25
7. occupied bandwidth
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
30 8. spectral emission templates
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
9. neighboring trace leaks rejection ratio (ACLR)
35 switches: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
10. stray radiation
4011. emission intermodulation
Switch: J7:2, J1:2, J8:3, J5:3
J9, J10, same respectively out-of-band radiation in the position of J6 (comprising frequency spectrum masterplate and neighboring trace) and stray radiation
12. vector error amplitude (EVM)
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
13. Peak Code Domain Error (PCDE)
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
(4) the PHS base station link is selected
1. frequency error
Switch: 940 band resistance path J7:FS, J1:FS, J9:5, J10:5, J6:FS
2. spurious emissions
100kHz～1.7GHz:2140 band resistance J7:FS, J1:FS, J9:4, J10:4, J6:FS
1.7GHzz～2.5GHz： 940 J7：FS，J1：FS，J9：5，J10：5，J6：FS
2.5GHz～3.5GHz： 2140 J7：FS，J1：FS，J9：4，J10：4，J6：FS
3.5GHz～6GHz: high pass J7:FS, J1:FS, J9:3, J10:3, J6:FS
3. occupied bandwidth
Switch: 940 band group path J7:FS, J1:FS, J9:5, J10:5, J6:FS
4. transmitting power
Switch: 940 band group path J7:FS, J1:FS, J9:5, J10:5, J6:FS
5. carrier wave turn-offs leakage power
Use 940 band resistance paths, J7:FS, J1:FS, J9:5, J10:5, J6:FS
6. emission transient response
Switch: 940 band group path J7:FS, J1:FS, J9:5, J10:5, J6:FS
7. modulation accuracy
Switch: 940 band group path J7:FS, J1:FS, J9:5, J10:5, J6:FS
8. adjacent-channel power
This is called in program " face channel leakage power ", change adjacent-channel power into
Use 940 band resistance paths, J7:FS, J1:FS, J9:5, J10:5, J6:FS
(5) CDMA2000 base station
1. frequency tolerance
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
2. pilot tone time tolerance limit
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
3. pilot channel is to Code Channel time tolerance limit
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
4. pilot channel is to the Code Channel phase margin
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
5. waveform quality
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
6. gross power
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
7. pilot power
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
8. code domain power
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS (55dB)
9. conduction stray emission
| Frequency range | The test bandwidth | Limiting value | Switch connects | Remarks |
| 9kHz～150kHz | IkIIz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 150kHz～30MHz | 10kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 30MHz～<806MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 806MHz～821MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS | Use band pass filter |
| >821MHz～<F-4MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| F-4MHz～F-1.98MHz | 30kHz | -60dBc(>＝33dBm) -27dBc (28dBm～33dBm) -55dBc(<28dBm) | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| F-1.98MHz～F-750kHz | 30kHz | -45dBc | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| F+750kHz～F+1.98MHz | 30kHz | -45dBc | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| F+1.98MHz～F+4MHz | 30kHz | -60dBc(>＝33dBm) -27dBc (28dBm～33dBm) -55dBc(<28dBm) | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| F+4MHz～885MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 885MHz～915MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8J6：FS | Use band pass filter |
| 915MHz～930MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 | Use band stop filter |
| J10：10 J6：FS | ||||
| 930MHz～960MHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 960～1000MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1GHz～1.7GHz | 1MHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1.7GHz～1.92GHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 1.92GHz～3.4GHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS | Use band stop filter |
| 3.4GHz～3.53GHz | 100kHz | -47dBm | J7：FS J1：FS J9：3 J10：3 J6：FS | Use high pass filter |
| 3.53GHz～12.75GHz | 1MHz | -36dBm | J7：FS J1：FS J9：3 J10：3 J6：FS | Use high pass filter |
(6) CDMA repeater
1. peak power output
J7：FS J1：FS J9：FSJ10：FS J6：FSJ8：4
2. gain-adjusted scope
J7：FS J1：FS J9：FSJ10：FS J6：FSJ8：4
3. gain-adjusted step-length and error
J7：FS J1：FS J9：FSJ10：FS J6：FSJ8：4
4. passband fluctuation
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
5. noise factor
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:FS
6. standing wave ratio of input voltage
Do not need the selection of switch ways.
7. propagation delay time
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
8. waveform quality factor
J7：FS J1：FS J9：FSJ10：FS J6：FS J8：4
9. spurious emissions
Band is outer spuious
Forward direction:
| Frequency range | The test bandwidth | Limiting value | Switch connects | Remarks |
| 9kHz～150kHz | 1kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 150kHz～30MHz | 10kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 30MHz～<806MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 806MHz～821MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS J8：4 | Use band pass filter |
| >821MHz～<869MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 869～870MHz | 100kHz | -22dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 880～881MHz | 100kHz | -22dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 881～885MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 885MHz～915MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS J8：4 | Use band pass filter |
| 915MHz～930MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 930MHz～960MHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 960～1000MHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 1GHz～1.7GHz | 1MHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 1.7GHz～1.92GHz | 100kHz | -47dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 1.92GHz～3.4GHz | 100kHz | -36dBm | J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use band stop filter |
| 3.4GHz～3.53GHz | 100kHz | -47dBm | J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
| 3.53GHz～12.75GHz | 1MHz | -36dBm | J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
Oppositely:
| Frequency range | The test bandwidth | Limiting value | Switch connects | Remarks |
| 9kHz～150kHz | 1kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 150kHz～30MHz | 10kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 30MHz～<806MHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 806MHz～821MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS J8：4 | Use band pass filter |
| >821MHz～<869MHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 869～870MHz | 100kHz | -22dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 880～881MHz | 100kHz | -22dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 881～885MHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 885MHz～915MHz | 100kHz | -67dBm | J7：FS J1：FS J9：8 J10：8 J6：FS J8：4 | Use band pass filter |
| 915MHz～930MHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 930MHz～960MHz | 100kHz | -47dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 960～1000MHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 1GHz～1.7GHz | 1MHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 1.7GHz～1.92GHz | 100kHz | -47dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 1.92GHz～3.4GHz | 100kHz | -36dBm | J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
| 3.4GHz～3.53GHz | 100kHz | -47dBm | J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
| 3.53GHz～12.75GHz | 1MHz | -36dBm | J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
Spuious in the band
J7：FS J1：FS J9：FS
J10：FS J6：FS，J8：4
10. intermodulation decay
In the work zone:
J7：FS J1：FS J9：FS
J10：FS J6：FS J8：4
Outside the work zone:
Forward direction:
9kHz～1GHz
| J7：FS J1：FS J9：10 J10：10 J6：FS J8：4 | Use 880 band stop filters |
1GHz～3.4GHz
| |J7：FSJ1：FS J9：10 J10：10J6：FS J8：4 | Use 880 band stop filters |
3.4～12.75GHz：
| J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
Oppositely:
9kHz～1GHz
| J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
1GHz～3.4GHz
| J7：FS J1：FS J9：4 J10：4 J6：FS J8：4 | Use 830 band stop filters |
3.4～1275GHz：
| J7：FS J1：FS J9：3 J10：3 J6：FS J8：4 | Use high pass filter |
Suppress 11. band is outer
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
(7) GSM repeater
1. nominal gain
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FSJ8:4
2. gain linearity adjustment
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS J8:4
3.1dB compression point power output
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FS J8:4
4. passband fluctuation
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
5. the outer gain of band
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
6. intermodulation decay
3.5GHz below:
Switch: J7:FS, J1:FS, J9FS, J10:FS, J6:FS (55dB) J8:4
3.5GHz more than:
Switch: J7:FS, J1:FS, J93, J10:3, J6:FS (55dB) J8:4
7. useless (spuious) emission
Use tunable band-stop filter and high pass filter
The input, the output voltage standing-wave ratio
9. noise factor
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:FS
10. propagation delay time
Switch connects J7:FS J1:FS J9:FSJ10:FS J6:2
11. frequency error
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FSJ8:4
12.GMSK modulation accuracy
Switch: J7:FS, J1:FS, J9:FS, J10:FS, J6:FSJ8:4
Claims (15)
1. a radio frequency unit is used for the radio communication base station radio frequency automatic test, it is characterized in that comprising:
At least one radio-frequency (RF) coaxial switch is used for the switching between each test link;
The radio-frequency (RF) coaxial attenuator is used for the high-power signal decay to input;
Filter is used for the spuious signal power that waits in the test filtering emission band;
Circulator is used for intermodulation testing, and the coupling two paths of signals prevents signals reverse entering signal generator;
Isolator is used for intermodulation testing, prevents reverse signal entering signal generator; And
External control interface and control circuit board, described radio frequency unit receives the instruction that is sent by the PC that Control Software is housed by external control interface, control the closure state of inner each the radio-frequency (RF) coaxial switch of radio frequency unit by control circuit board, realize the quick switching between each test link.
2. according to the radio frequency unit of claim 1, use built-in 12V DC power supplier power supply.
3. according to the radio frequency unit of claim 1, connect by the rigidity radio frequency coaxial-cable between each device.
4. according to the radio frequency unit of claim 1, described external control interface is a rs-232 standard industry interface.
5. according to the radio frequency unit of claim 4, described control circuit board is the RS-232 interface control circuit board.
6. according to each radio frequency unit of claim 1-5, be used for the radio frequency automatic test of CDMA2000 base station.
7. according to each radio frequency unit of claim 1-5, be used for the radio frequency automatic test of WCDMA base station.
8. according to each radio frequency unit of claim 1-5, be used for the radio frequency automatic test of cdma base station/repeater.
9. according to each radio frequency unit of claim 1-5, be used for the radio frequency automatic test of GSM base station/repeater.
10. according to each radio frequency unit of claim 1-5, be used for the radio frequency automatic test of PHS base station.
11. a radio frequency automatic test system for wireless communication base station comprises:
The radio frequency testing unit is used for the radio communication base station radio frequency automatic test, comprises at least one radio-frequency (RF) coaxial switch;
RS-232 interface, the communication between charge control circuit and the PC, the instruction character string of reception PC sends to control circuit again; After the state return information of each radio-frequency (RF) coaxial switch, RS-232 interface returns to PC with character string information again in control circuit obtains the radio frequency testing unit;
Power module for each radio-frequency (RF) coaxial switch power supply in control circuit and the radio frequency testing unit, drives the action of described each radio-frequency (RF) coaxial switch; And
Control circuit according to the character string instruction of RS-232 interface, is provided with the Transistor-Transistor Logic level of the winding displacement socket on the circuit board, and these winding displacement socket stitch connect each control pin of each radio-frequency (RF) coaxial switch in the radio frequency testing unit by winding displacement.
12., it is characterized in that described radio frequency testing unit also comprises filter, attenuator, circulator and isolator, constitutes a plurality of test links with described radio-frequency (RF) coaxial switch according to the radio frequency automatic test system for wireless communication base station of claim 11.
13. radio frequency automatic test system for wireless communication base station according to claim 11, wherein said radio frequency testing unit comprises filter, circulator, attenuator and the isolator of radio-frequency (RF) coaxial switch and different size, described radio-frequency (RF) coaxial switch uses Transistor-Transistor Logic level control, discrete each filter, circulator, attenuator and isolator and radio frequency coaxial-cable are combined, and described radio-frequency (RF) switch has just constituted different test links in different positions.
14., it is characterized in that the test link in the described radio frequency testing unit comprises straight-through link, intermodulation testing link, conduction stray test link or noise factor test link according to the radio frequency automatic test system for wireless communication base station of claim 12 or 13.
15., it is characterized in that radio communication base station/repeater being tested by described radio frequency testing unit according to each radio frequency automatic test system for wireless communication base station of claim 11-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100771925A CN101478353A (en) | 2009-01-20 | 2009-01-20 | Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100771925A CN101478353A (en) | 2009-01-20 | 2009-01-20 | Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test |
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| Publication Number | Publication Date |
|---|---|
| CN101478353A true CN101478353A (en) | 2009-07-08 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100771925A Pending CN101478353A (en) | 2009-01-20 | 2009-01-20 | Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test |
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| CN (1) | CN101478353A (en) |
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| CN102025429A (en) * | 2010-10-27 | 2011-04-20 | 北京邮电大学 | Radio frequency switching unit capable of being used for automatic testing of WCDMA (Wideband Code Division Multiple Access) /GSM (Global System for Mobile Communication) terminal radio frequency |
| CN102547803A (en) * | 2012-01-30 | 2012-07-04 | 中兴通讯股份有限公司 | System, method and multiplexer for testing radio frequency for base station |
| CN102571239A (en) * | 2012-01-13 | 2012-07-11 | 中兴通讯股份有限公司 | Test system for radio frequency index |
| CN102781025A (en) * | 2011-05-09 | 2012-11-14 | 上海华为技术有限公司 | Checking method and checking device for base station equipment |
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| CN103051392A (en) * | 2012-11-29 | 2013-04-17 | 国家无线电监测中心检测中心 | Method and device for intermodulation interference test of wireless communication terminal of private network |
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| CN106645831A (en) * | 2016-11-28 | 2017-05-10 | 东莞市华庄电子有限公司 | Wireless static testing device and corresponding wireless static testing method |
| CN112532274A (en) * | 2020-12-03 | 2021-03-19 | Oppo（重庆）智能科技有限公司 | Radio frequency switch assembly and control method thereof, radio frequency test equipment and system thereof |
| CN112532274B (en) * | 2020-12-03 | 2022-05-17 | Oppo（重庆）智能科技有限公司 | Radio frequency switch assembly and control method thereof, radio frequency test equipment and system thereof |
| CN112305307A (en) * | 2020-12-21 | 2021-02-02 | 深圳市鼎阳科技股份有限公司 | Third-order intermodulation measurement method of spectrum analyzer and spectrum analyzer |
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