CN102055535A - Filter device and working method thereof - Google Patents
Filter device and working method thereof Download PDFInfo
- Publication number
- CN102055535A CN102055535A CN200910223118XA CN200910223118A CN102055535A CN 102055535 A CN102055535 A CN 102055535A CN 200910223118X A CN200910223118X A CN 200910223118XA CN 200910223118 A CN200910223118 A CN 200910223118A CN 102055535 A CN102055535 A CN 102055535A
- Authority
- CN
- China
- Prior art keywords
- filter
- frequency
- chip microcomputer
- signal
- power meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a filter device. The filter device comprises an input port and an output port, and further comprises a singlechip, a multi-way switch and a plurality of filters with different filtering characteristics, wherein the singlechip is connected with an input and output component; the multi-way switch is connected with the singlechip by a control line, and an input pin of the multi-way switch is connected with the input port; and the input ends of the plurality of filters are connected with output pins of the multi-way switch respectively, and the output ends of the plurality of filters are all connected with the output port. The invention also discloses a working method of the filter device. In the invention, the plurality of filters with the different filtering characteristics are integrated, so that equipment to be tested can be conveniently tested in various frequency ranges and various modes by switching the filters; in addition, the filter device also can provide a self-testing function; moreover, the filter device also can detect tapped wave values of each filter at frequency points of main frequency and loss values of each filter at the frequency points of second harmonics.
Description
Technical field
The present invention relates to a kind of filter, particularly relate to a kind of filter and method of work thereof.
Background technology
Along with day by day popularizing of the fast development of wireless communication technique and wireless product, wireless device is well-known for the significant leap of the convenient and swift and quality of life that people's life brings.But the emitted energy of wireless product is big, and human body and biological radiation hazradial bundle be can not be ignored.The spuious test of wireless product has been used as the important radio-frequency (RF) index of weighing mobile phone or other communication product emitted energies, and the filter that its test process uses just becomes the important step of guaranteeing spuious accurate testing degree.
When usually carrying out the spuious checking of wireless product in the laboratory, because the frequency range network that wireless product relates to is extensive, comprise GSM (Global System for Mobile Communications, global system for mobile communications) network, WCDMA (Wideband Code Division Multiple Access (WCDMA)) network, the WLAN of TD-SCDMA (code division multiple access that the time-division is synchronous) network and 2.4G (Wireless Local Area Network, WLAN (wireless local area network)), bluetooth, Zigbee (a kind of short distance, the low rate radio network technique) or the like, in addition the test pattern of wireless product is also very various, in generally all will being with, test outside the band and comprise and conduct or two kinds of verification methods of radiation.
The filter that now uses in test is more by specification frequency range division kind, and calibration inconvenience, make test process increase the weight of tester's work load greatly, and use also can make its accurate testing degree lose guarantee for a long time.For example, carrying out a common GSM four frequencies (900,1800,850,1900 frequency ranges) during the spuious test of wireless module, need use six filters (each four filter of four frequency ranges of the outer test of band, band build-in test 900,850 low frequencies use a filter altogether, 1800,1900 high frequencies use a filter altogether), and the service time of filter is long or the wearing and tearing of device itself, lost efficacy, the capital make the engineer can't confirm fast to test in the filtering of employed filter and the requirement whether the trap state meets spuious test, cause test result may lose reference value, bring great inconvenience for the follow-up work of Radio Frequency Engineer.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the defective of the more and calibration inconvenience of the required filter specification of test in the prior art, the different filter of a kind of integrated a plurality of filtering characteristics is provided and can realizes the filter and the method for work thereof of self check.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of filter, it comprises an input port and an output port, its characteristics are that this filter also comprises: a single-chip microcomputer, this single-chip microcomputer links to each other with an in-out box; One variable connector, this variable connector links to each other with this single-chip microcomputer by a control line, and the input pin of this variable connector links to each other with this input port; The filter that a plurality of filtering characteristics are different, the input of these a plurality of filters link to each other with each output pin of this variable connector respectively, and the output of these a plurality of filters all links to each other with this output port.
Preferably, this filter also comprises a power meter, and this power meter all links to each other with this input port, this output port and this single-chip microcomputer.
Preferably, this filter also comprises a power supply, and this power supply all links to each other with this single-chip microcomputer, this in-out box, this variable connector and this power meter.
Preferably, this in-out box is the LCM (LCD Module, LCD module) of a band touch-screen.
Preferably, this variable connector is a radio frequency analog switch.
Preferably, these a plurality of filters are the filter of microstrip line circuit structure.
Preferably, the filtering characteristic of these a plurality of filters is applicable to the interior and band external schema of band of GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range respectively.
Another technical scheme of the present invention is: a kind of method of work of above-mentioned filter, its characteristics are that it may further comprise the steps: S
1, a Devices to test is inserted this input port; S
2, select required filtering characteristic by this in-out box, this in-out box should selection information input to this single-chip microcomputer, possess a filter of required filtering characteristic in these a plurality of filters of this variable connector gating of this Single-chip Controlling; S
3, an analytical equipment is inserted this output port, by this analytical equipment to analyzing from this Devices to test through the signal of filtering.
Preferably, this filter also comprises a power meter, and this power meter all links to each other with this input port, this output port and this single-chip microcomputer, and step S
2With step S
3Between also comprise a self check process, this self check process may further comprise the steps: S
21, this single-chip microcomputer access in advance storage this by the standard filtering characteristic of the filter of gating; S
22, this power meter collection is directly from the signal of this Devices to test, and from the signal through filtering of this Devices to test; S
23, this single-chip microcomputer reads this two signals from this power meter, and calculates the strength difference of these two signals; S
24, judge that whether this difference is in this standard filtering characteristic is in the permissible range at center, if be in this permissible range then execution in step S
3, then report an error if exceed this permissible range.
Preferably, the filtering characteristic of these a plurality of filters is applicable to the interior and band external schema of the band of GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range, step S respectively
21In this single-chip microcomputer access this by the filter of gating at its frequency range that is suitable for and the standard trap value at a plurality of standard frequency point place under the pattern, step S
23In this single-chip microcomputer only read the intensity of these two signals in the mode of frequency sweep in these a plurality of standard frequency point from this power meter, and calculate the strength difference of these two signals at each this standard frequency point place, step S
24In this single-chip microcomputer judge that the standard trap value whether those differences all are in corresponding frequency is in the permissible range at center, if all be in this permissible range then execution in step S
3, then report an error if there is difference to exceed this permissible range.
Preferably, step S
1Also comprise a filter detection process, this filter detection process may further comprise the steps: S before
11, a signal generator is inserted this input port; S
12, select required filtering characteristic by this in-out box, this in-out box should selection information input to this single-chip microcomputer, possess a filter of required filtering characteristic in these a plurality of filters of this variable connector gating of this Single-chip Controlling; S
13, at this frequency range that is suitable for by the filter of gating and the dominant frequency frequency under the pattern, set the signal that this signal generator sends this dominant frequency frequency place, this power meter collection is directly from the signal of this signal generator and from the signal through filtering of this signal generator, this single-chip microcomputer reads this two signals from this power meter, and the strength difference that calculates these two signals with as this by the trap value of the filter of gating at this dominant frequency frequency place; S
14, at this frequency range that is suitable for by the filter of gating and the second harmonic frequency under the pattern, set the signal that this signal generator sends this second harmonic frequency place, this power meter collection is directly from the signal of this signal generator and from the signal through filtering of this signal generator, this single-chip microcomputer reads this two signals from this power meter, and the strength difference that calculates these two signals with as this by the loss value of the filter of gating at this second harmonic frequency place.S
15, disconnect being connected of this signal generator and this input port.
Positive progressive effect of the present invention is: the present invention is by integrated a plurality of filters with different filtering characteristics, particularly a plurality of interior and outer filters of testing of band of band that are applicable to GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range respectively, and correspondingly set up the variable connector that is used to switch each filter, make that the test under each frequency range and each pattern can be finished easily by the switching to each filter to Devices to test.In addition, by the design of power meter, this filter can also provide self-checking function, makes the engineer can momentarily verify the filtering and the trap state of each filter fast, has improved testing precision.In addition, this filter can also link to each other with signal generator, detecting each filter in the trap value at dominant frequency frequency place and at the loss value at second harmonic frequency place, thereby the measured value that shows on the spectrum analyzer can be reduced to actual value comparatively accurately.
Description of drawings
Fig. 1 is the structural representation of filter of the present invention.
Fig. 2 is the flow chart of the method for work of filter of the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Filter of the present invention is a kind of multi-functional filter, because of it is integrated with a plurality of filters that possess different filtering characteristics, so can provide required various filtering performances by the switching to each filter.In adopting a plurality of bands that are applicable to GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range respectively and during the outer filter of testing of band, this filter will be particularly useful for the spuious and harmonic problem of the end product of field of wireless communication is carried out validation test.
As shown in Figure 1, this filter has one and is used for the input port 1 that signal inserts, and this input port 1 links to each other with a Devices to test or a signal generator in use; This filter also has one and is used for the output port 2 that signal is exported, and this output port 2 links to each other with a spectrum analyzer or other testing equipments in use.In addition, this filter also comprises: a single-chip microcomputer 3, this single-chip microcomputer 3 links to each other with an in-out box 4, in the present embodiment, that this in-out box 4 adopts is the LCM of a band touch-screen, but this in-out box 4 is not limited thereto, also can adopt other in-out boxs that can realize man-machine interaction to realize, this single-chip microcomputer 3 and these in-out box 4 mutual communications, the control information of this single-chip microcomputer 3 is shown to the user by this in-out box 4, and the operation information that the user imports by this in-out box 4 then can be input to this single-chip microcomputer 3 and handle; One variable connector 5, this variable connector 5 links to each other with this single-chip microcomputer 3 by a control line, disconnection and gating by each path of 3 pairs of these variable connectors 5 of this single-chip microcomputer are controlled, the input pin of this variable connector 5 links to each other with this input port 1, in the present embodiment, what this variable connector 5 adopted is a radio frequency analog switch, but this variable connector 5 is not limited thereto, and also can adopt for example mechanical switch or the like; Filter 6a, 6b, 6c... that a plurality of filtering characteristics are different, in the present embodiment, because this filter is to be used for the spuious and harmonic problem of wireless telecommunications system is verified, therefore, what these a plurality of filters adopted is the interior and outer filter of testing of band of band that is applicable to GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range respectively, the input of these a plurality of filters links to each other with each output pin of this variable connector 5 respectively, and the output of these a plurality of filters all links to each other with this output port 2.
In the present embodiment,, also need cooperate and carry out certain software design, with the operation interface of man-machine interaction that this selection information of realization is provided in order to make the user can on this LCM, carry out the selection of functions such as necessary frequency range, pattern, self check, detection.Because this software can be realized by existing programming mode, so do not repeat them here.
3 pairs of these in-out boxs 4 of this single-chip microcomputer are provided with, make the user under corresponding operation interface only each path to this variable connector 5 carry out Dan Xuan, thereby only understand the some filters of gating and carry out test job, in present embodiment, promptly this single-chip microcomputer 3 these LCM of control are in the radio box state all the time under the interface of selecting frequency range and pattern, switch with the mistake that prevents this radio frequency analog switch.For example: when Frequency Band Selection, the user can not choose 900MHz and these two frequency ranges of 850MHz simultaneously, or chooses band outer and be with interior two kinds of patterns simultaneously, but can only select certain frequency range and certain pattern of certain network.
When adopting existing mode that the spuious and harmonic problem of radio communication product is verified, be used for carrying out and be with the filter of external schema test to be generally cavity body filter, be used for carrying out and be with the filter of internal schema test then to be generally trapper with frequency adjustment knob, and, in the test process of reality, only can analyze at several specific frequencies commonly used.Because these above-mentioned filter bodies are bigger, not easy to use, therefore the present invention can select needed filter state is realized by the circuit board with special frequency channel filtering characteristic that adopts the microstrip line mode to make when design, significantly reduced the shared volume of filter like this, strengthened filter capacity again targetedly, and after integrated a plurality of filters, also can switch easily.An example of the filter that the present invention adopts can for: when the used band stop filter of the outer test of design band,, therefore can suitably increase filtering progression, and the use Surface Acoustic Wave Filter owing to need higher squareness factor.
Further, in order to guarantee the accuracy of each filter, to guarantee the measuring accuracy of this filter, need provide to the self-checking function of each filter in this filter and to the measuring ability of its trap value and Insertion Loss value, at these two purposes, this filter also comprises a power meter 7, and this power meter 7 all links to each other with this input port 1, this output port 2 and this single-chip microcomputer 3, and concrete self check and detection method will be described below.In addition, when using this power meter 7 to gather power, should be noted that ceiling capacity that its input can bear and the dynamic range of gathering power.
Preferably, this filter also comprises a power supply 8, and this power supply 8 all links to each other with this single-chip microcomputer 3, this in-out box 4, this variable connector 5 and this power meter 7, has adopted the DC source (for example alkaline battery) of 9V to power in the present embodiment.
In addition, owing to the filter ratio is easier to be interfered, so locate all to shield at single-chip microcomputer, radio frequency analog switch and LCM etc. in the present embodiment, to prevent the coupling of interference signal.
Figure 2 shows that the flow chart of the method for work of this filter of the present invention.At first, the 9V battery of packing at the position of source place of this filter is opened the mains switch of this filter then, then carries out following steps:
Step 101, the user selects required filtering characteristic by this in-out box, in the present embodiment, be in the option of the frequency range of screen displaying and pattern, select concrete frequency range and pattern under certain required network, for example outside the band under needing testing GSM network 900MHz frequency range during spuious situation, " 900MHz " frequency range in " GSM " type and " band is outer " pattern are chosen and got final product.This in-out box can will should selection information input in this single-chip microcomputer, identify a current filter that possesses required filtering characteristic that needs use for this single-chip microcomputer, then by the switching of each path of this this variable connector of Single-chip Controlling, with this filter of gating, for example be applicable to a filter of the outer test of band under the GSM network 900MHz frequency range.
Step 102, with an analytical equipment, promptly a spectrum analyzer or other testing equipments insert this output port, by this analytical equipment to from the analyzing of this Devices to test through the signal of filtering, thereby finish checking to the spuious and harmonic problem of this Devices to test.
Further, when this filter was provided with above-mentioned power meter, it can also provide to the self-checking function of each filter in this filter and to the measuring ability of its trap value and Insertion Loss value.
The self check process was generally carried out before the test beginning, promptly between step 101 and step 102, carry out, when the performance state that detects filter is undesirable, the tester needs this filter is changed or keeped in repair, to guarantee can not cause the data of test result invalid owing to the uncertainty of filter state.
Particularly, this self check process may further comprise the steps:
Step 2000, this single-chip microcomputer is according to the selection information of user to filtering characteristic, at current this filter that needs use, access the standard filtering characteristic of this filter under perfect condition of storage in advance, for example: when this filter is in normal filter state following time, the standard trap value at its several standard frequency point place under selected frequency range, institute's lectotype.
Step 2001, this power meter collection be directly from the signal (passage 1) of this Devices to test, and from the signal (passage 2) through filtering of this Devices to test.
Step 2002, this single-chip microcomputer are in for example mode of frequency sweep from low to high, and order reads the intensity of these two signals in those standard frequency point from this power meter, and calculates the strength difference of these two signals at each standard frequency point place respectively.
Step 2003, those differences and above-mentioned standard trap value are compared, if the standard trap value that those differences all are in corresponding frequency place is in the permissible range at center, then self check is passed through, continue execution in step 102, if there is certain difference to exceed this permissible range, then report an error, corresponding filter is changed or processing such as maintenance by the tester.
For example, in the band of test 900MHz frequency range when spuious, but the trap state of the corresponding filter of self check at standard frequency point places such as 896.4MHz, 900.6MHz, 904.2MHz, 908.4MHz whether meet the demands, for early-stage preparations are carried out in test.
When hope understand current need this filter of using its filtering characteristic at frequency range and during the loss value at the trap value at the dominant frequency frequency place under the pattern and second harmonic frequency place, can also carry out a filter detection process before the step 100, this filter detection process may further comprise the steps:
Step 1000 inserts this input port with a signal generator.
Step 1001, the user selects required filtering characteristic by this in-out box, this in-out box should selection information input in this single-chip microcomputer, this single-chip microcomputer identifies a current filter that possesses required filtering characteristic that needs use, then by the switching of each path of this this variable connector of Single-chip Controlling, with this filter of gating.
Step 1002, at this frequency range that is suitable for by the filter of gating and the dominant frequency frequency under the pattern, set the signal that this signal generator sends this dominant frequency frequency place, this power meter collection is directly from the signal (passage 1) of this signal generator and from the signal (passage 2) through filtering of this signal generator, this single-chip microcomputer reads these two signals of this dominant frequency frequency from this power meter, and calculate the strength difference of these two signals, with as this by the trap value of the filter of gating at this dominant frequency frequency place.
Step 1003, at this frequency range that is suitable for by the filter of gating and the second harmonic frequency under the pattern, set the signal that this signal generator sends this second harmonic frequency place, this power meter collection is directly from the signal (passage 1) of this signal generator and from the signal (passage 2) through filtering of this signal generator, this single-chip microcomputer reads these two signals of this second harmonic frequency from this power meter, and calculate the strength difference of these two signals, with as this by the loss value of the filter of gating at this second harmonic frequency place.
Step 1004 disconnects being connected of this signal generator and this input port, to carry out follow-up testing process.
For example, when testing GSM network 900MHz frequency range 62 channels, but the setting signal generator is at the dominant frequency frequency 902.4MHz emission-10dBm of place energy, two channel energy collections by this filter internal power meter, and in single-chip microcomputer, carry out strength difference and calculate, finally can on touch-screen, demonstrate the size of trap amount, for example: LOSS 30dB.In like manner, input 1804.8MHz can draw the loss value of this filter at second harmonic frequency place, for example: LOSS 3dB.So just, the measured value that shows on the spectrum analyzer can be reduced to actual value comparatively accurately, for example: the measured value of second harmonic on spectrum analyzer is-45dBm, if being reduced to actual value then need add the cable loss of 2dB and the filter loss of 3dB, the just convenient thus actual value that has drawn the second harmonic emission exactly is-40dBm.
In sum, the present invention makes that by integrated a plurality of filters with different filtering characteristics the test under each frequency range and each pattern can be finished easily by the switching to each filter to Devices to test; In addition, this filter can also provide self-checking function; In addition, this filter can also detect each filter in the trap value at dominant frequency frequency place and at the loss value at second harmonic frequency place.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (11)
1. filter, it comprises an input port and an output port, it is characterized in that, this filter also comprises:
One single-chip microcomputer, this single-chip microcomputer links to each other with an in-out box;
One variable connector, this variable connector links to each other with this single-chip microcomputer by a control line, and the input pin of this variable connector links to each other with this input port;
The filter that a plurality of filtering characteristics are different, the input of these a plurality of filters link to each other with each output pin of this variable connector respectively, and the output of these a plurality of filters all links to each other with this output port.
2. filter as claimed in claim 1 is characterized in that this filter also comprises a power meter, and this power meter all links to each other with this input port, this output port and this single-chip microcomputer.
3. filter as claimed in claim 1 is characterized in that this filter also comprises a power supply, and this power supply all links to each other with this single-chip microcomputer, this in-out box, this variable connector and this power meter.
4. filter as claimed in claim 1 is characterized in that, this in-out box is the LCM of a band touch-screen.
5. filter as claimed in claim 1 is characterized in that, this variable connector is a radio frequency analog switch.
6. filter as claimed in claim 1 or 2 is characterized in that these a plurality of filters are the filter of microstrip line circuit structure.
7. filter as claimed in claim 1 or 2 is characterized in that, the filtering characteristic of these a plurality of filters is applicable to the interior and band external schema of the band of GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range respectively.
8. the method for work of a filter as claimed in claim 1 is characterized in that, it may further comprise the steps:
S
1, a Devices to test is inserted this input port;
S
2, select required filtering characteristic by this in-out box, this in-out box should selection information input to this single-chip microcomputer, possess a filter of required filtering characteristic in these a plurality of filters of this variable connector gating of this Single-chip Controlling;
S
3, an analytical equipment is inserted this output port, by this analytical equipment to analyzing from this Devices to test through the signal of filtering.
9. method of work as claimed in claim 8 is characterized in that this filter also comprises a power meter, and this power meter all links to each other with this input port, this output port and this single-chip microcomputer, and step S
2With step S
3Between also comprise a self check process, this self check process may further comprise the steps:
S
21, this single-chip microcomputer access in advance storage this by the standard filtering characteristic of the filter of gating;
S
22, this power meter collection is directly from the signal of this Devices to test, and from the signal through filtering of this Devices to test;
S
23, this single-chip microcomputer reads this two signals from this power meter, and calculates the strength difference of these two signals;
S
24, this single-chip microcomputer judges that whether this difference is in this standard filtering characteristic is in the permissible range at center, if be in this permissible range then execution in step S
3, then report an error if exceed this permissible range.
10. method of work as claimed in claim 9 is characterized in that, the filtering characteristic of these a plurality of filters is applicable to the interior and band external schema of the band of GSM, WCDMA, TD-SCDMA and WLAN/BT network frequency range, step S respectively
21In this single-chip microcomputer access this by the filter of gating at its frequency range that is suitable for and the standard trap value at a plurality of standard frequency point place under the pattern, step S
23In this single-chip microcomputer only read the signal strength signal intensity of these two signals in the mode of frequency sweep in these a plurality of standard frequency point from this power meter, and calculate the strength difference of these two signals at each this standard frequency point place, step S respectively
24In this single-chip microcomputer judge that the standard trap value whether those differences all are in corresponding frequency is in the permissible range at center, if all be in this permissible range then execution in step S
3, then report an error if there is difference to exceed this permissible range.
11. method of work as claimed in claim 10 is characterized in that, step S
1Also comprise a filter detection process, this filter detection process may further comprise the steps before:
S
11, a signal generator is inserted this input port;
S
12, select required filtering characteristic by this in-out box, this in-out box should selection information input to this single-chip microcomputer, possess a filter of required filtering characteristic in these a plurality of filters of this variable connector gating of this Single-chip Controlling;
S
13, at this frequency range that is suitable for by the filter of gating and the dominant frequency frequency under the pattern, set the signal that this signal generator sends this dominant frequency frequency place, this power meter collection is directly from the signal of this signal generator and from the signal through filtering of this signal generator, this single-chip microcomputer reads this two signals from this power meter, and the strength difference that calculates these two signals with as this by the trap value of the filter of gating at this dominant frequency frequency place;
S
14, at this frequency range that is suitable for by the filter of gating and the second harmonic frequency under the pattern, set the signal that this signal generator sends this second harmonic frequency place, this power meter collection is directly from the signal of this signal generator and from the signal through filtering of this signal generator, this single-chip microcomputer reads this two signals from this power meter, and the strength difference that calculates these two signals with as this by the loss value of the filter of gating at this second harmonic frequency place.
S
15, disconnect being connected of this signal generator and this input port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223118.XA CN102055535B (en) | 2009-11-10 | 2009-11-10 | Filter device and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910223118.XA CN102055535B (en) | 2009-11-10 | 2009-11-10 | Filter device and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102055535A true CN102055535A (en) | 2011-05-11 |
| CN102055535B CN102055535B (en) | 2014-12-31 |
Family
ID=43959507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910223118.XA Expired - Fee Related CN102055535B (en) | 2009-11-10 | 2009-11-10 | Filter device and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102055535B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067097A (en) * | 2012-11-29 | 2013-04-24 | 国家无线电监测中心检测中心 | Method and device of type-approval radiation harassment test for wireless communication terminal |
| CN104037770A (en) * | 2014-07-04 | 2014-09-10 | 西南交通大学 | Power harmonic adaptive filter and adaptive filtering method thereof |
| CN102055535B (en) * | 2009-11-10 | 2014-12-31 | 沈阳新邮通信设备有限公司 | Filter device and working method thereof |
| CN104883150A (en) * | 2014-02-27 | 2015-09-02 | 佳邦科技股份有限公司 | Wideband common-mode filtering apparatus |
| CN109104256A (en) * | 2018-10-29 | 2018-12-28 | 京信通信系统（中国）有限公司 | Test device |
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004023755A (en) * | 2002-06-20 | 2004-01-22 | Anritsu Corp | Calibration method of multipath fading signal level and correction method in sensitivity test of mobile wireless machine and mobile wireless machine test system |
| CN101232117A (en) * | 2007-01-25 | 2008-07-30 | 三菱电机株式会社 | Passive microwave multiplexor and demultiplexer |
| CN101437317A (en) * | 2007-11-15 | 2009-05-20 | 大唐移动通信设备有限公司 | Wireless radio frequency index verification apparatus and method for multi-mode mobile communication terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055535B (en) * | 2009-11-10 | 2014-12-31 | 沈阳新邮通信设备有限公司 | Filter device and working method thereof |
-
2009
- 2009-11-10 CN CN200910223118.XA patent/CN102055535B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004023755A (en) * | 2002-06-20 | 2004-01-22 | Anritsu Corp | Calibration method of multipath fading signal level and correction method in sensitivity test of mobile wireless machine and mobile wireless machine test system |
| CN101232117A (en) * | 2007-01-25 | 2008-07-30 | 三菱电机株式会社 | Passive microwave multiplexor and demultiplexer |
| CN101437317A (en) * | 2007-11-15 | 2009-05-20 | 大唐移动通信设备有限公司 | Wireless radio frequency index verification apparatus and method for multi-mode mobile communication terminal |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055535B (en) * | 2009-11-10 | 2014-12-31 | 沈阳新邮通信设备有限公司 | Filter device and working method thereof |
| CN103067097A (en) * | 2012-11-29 | 2013-04-24 | 国家无线电监测中心检测中心 | Method and device of type-approval radiation harassment test for wireless communication terminal |
| CN103067097B (en) * | 2012-11-29 | 2016-01-20 | 国家无线电监测中心检测中心 | Wireless communication terminal is carried out to the method and apparatus of Type Approval EMC emission test |
| CN104883150A (en) * | 2014-02-27 | 2015-09-02 | 佳邦科技股份有限公司 | Wideband common-mode filtering apparatus |
| CN104037770A (en) * | 2014-07-04 | 2014-09-10 | 西南交通大学 | Power harmonic adaptive filter and adaptive filtering method thereof |
| CN109104256A (en) * | 2018-10-29 | 2018-12-28 | 京信通信系统（中国）有限公司 | Test device |
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102055535B (en) | 2014-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102055535A (en) | Filter device and working method thereof | |
| CN103731219B (en) | A kind of bluetooth end properties method of testing and system | |
| CN101437317B (en) | Wireless radio frequency index verification apparatus and method for multi-mode mobile communication terminal | |
| CN109709474A (en) | A kind of radio frequency mixed signal integrated circuit test system and test method | |
| CN101478353A (en) | Radio frequency unit capable of being used in wireless communication base station radio frequency automatic test | |
| CN104519503A (en) | Radio frequency link switching device for mobile communication terminal testing | |
| CN102946286A (en) | Method, device and system for controlling detection of equipment | |
| CN107294557A (en) | The RF front-end circuit and complete-machine coupling method of testing of mobile terminal | |
| CN101212745A (en) | Method for mutual interference performance test of dual-mode dual-standby mobile terminal | |
| CN110609183A (en) | IVI technology-based identification module and automatic test system of complete machine | |
| CN105703849A (en) | Radio frequency switching box and system for testing radio frequency consistency of terminals | |
| CN107359944B (en) | Bluetooth equipment radio frequency test system | |
| CN206432996U (en) | Radio-frequency performance of wireless terminal test system | |
| CN105873108A (en) | Test system for radio frequency conformance of LTE (long term evolution) terminal | |
| CN105323015B (en) | A kind of device for realizing passive device test | |
| CN110011943A (en) | The adjustment method and device of electronic product commissioning device | |
| CN108075839A (en) | A kind of apparatus and method for supporting a variety of communication standard signal power detections | |
| CN201523362U (en) | Filter device | |
| CN209046652U (en) | Power detection device for mobile communication | |
| CN215529026U (en) | Radio frequency filtering switching device and system | |
| CN211579979U (en) | Wi-Fi wireless test system and device | |
| CN211352199U (en) | Automatic testing arrangement of multichannel signal selector of control | |
| CN113346963A (en) | Vehicle-mounted wireless communication product electromagnetic anti-interference test system and method based on 5G signal | |
| CN113726451A (en) | Radio frequency filtering switching device, system and method | |
| CN108964791A (en) | A kind of 1800M RF consistency automatic test device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170113 Address after: 518000 Futian District, Guangdong, Che Kung Temple Innovation Technology Plaza, B, block, phase 1, 1407-63 Patentee after: Shenzhen Ji Ming Technology Co Ltd Address before: 110136 Shenyang, Shenbei New Area Province Economic Development Zone, justice, Shen North Road, No. 51, No. Patentee before: Shenyang New Postcom Equipment Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A Patentee after: Shenzhen Ji Ming Technology Co Ltd Address before: 518000 Futian District, Guangdong, Che Kung Temple Innovation Technology Plaza, B, block, phase 1, 1407-63 Patentee before: Shenzhen Ji Ming Technology Co Ltd |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20181110 |