CN108092846A - A kind of radio frequency switching device and radio frequency switching method - Google Patents
A kind of radio frequency switching device and radio frequency switching method Download PDFInfo
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- CN108092846A CN108092846A CN201711182528.5A CN201711182528A CN108092846A CN 108092846 A CN108092846 A CN 108092846A CN 201711182528 A CN201711182528 A CN 201711182528A CN 108092846 A CN108092846 A CN 108092846A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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Abstract
The present invention provides a kind of radio frequency switching device and radio frequency switching methods, wherein, the equipment includes controller and electrically tunable filter, controller receives the control instruction for carrying target detection band information from external equipment, tuning control signal corresponding with target detection frequency range is generated according to control instruction, by tuning control signal transmission to electrically tunable filter.Electrically tunable filter receives the radiofrequency signal to be measured from terminal to be tested and the tuning control signal from controller, the centre frequency of radiofrequency signal to be measured is tuned in target detection frequency range according to tuning control signal, and the radiofrequency signal to be measured after tuning is sent to test cell and is tested.Thus, when subsequently there is new test frequency range to introduce, cabinet where radio frequency switching device need not be opened increases new wave filter, only need to the tuned frequency of electrically tunable filter be configured to new frequency range, so that radio frequency switching device possesses good test frequency scalability.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of radio frequency switching device and radio frequency switching method.
Background technology
Terminal radio frequency Auto-Test System, which refers to adopt, computerizeds control, and is automatically performed and establishes call, link switching, signal
Measurement, data calculating processing and the automatization test system to output test result are mainly used in the survey of wireless terminal RF index
Examination and integrated test system are built.
Current terminal radio frequency test item is relatively more, this needs during the test, for different test events, to carry
Corresponding radio frequency link is to meet test request.Simultaneously as the frequency range of test is more scattered required for terminal test, this is just needed
A plurality of radio frequency link is built during a radio frequency testing is completed.Traditional mode is that each frequency range of testing places one
The bandpass filter of corresponding band, how many frequency range just need to place how many a bandpass filters, final to be thrown by two hilted broadswords more
Switch gates these wave filters.
Referring to Fig. 1, now radio frequency switching device of the prior art is illustrated with one embodiment, existing radio frequency is cut
Exchange device includes bandpass filter F2~F10 there are one high-pass filter F1 and multiple and different frequency ranges.Each bandpass filter
Both ends connect single pole multiple throw SW3 and SW4 respectively, when which bandpass filter single pole multiple throw connect, which band logical
Wave filter works.The state shown in Fig. 1 is the situation that the high-pass filter F1 in radio frequency switching device is connected.It is single in Fig. 1
Knife multithrow switch SW3 and SW4 connect other two single-pole double-throw switch (SPDT) SW1 and SW2, also, high-pass filter F1 both ends respectively
Also it is connected on single-pole double-throw switch (SPDT) SW1 and SW2.Single-pole double-throw switch (SPDT) SW1 connections coaxial attenuator 30.As a result, from Fig. 1
In as can be seen that using the required wave filter species of existing mode it is more, not only occupied space is difficult to realize greatly portable take
Band.And new wave filter is placed into, can not be passed through, it is necessary to which former radio frequency switching device is dismantled when the new test frequency range of introducing
Upgrade software to reach band spreading, be unfavorable for being widely popularized so that equipment manufacturing cost is high.
In addition, it is important that a problem be when introducing new test frequency range, it is necessary to which former radio frequency testing unit is dismantled, then
New wave filter is put into, band spreading can not be reached by upgrading software.
The content of the invention
In view of the above problems, it is proposed that the present invention overcomes the above problem in order to provide one kind or solves at least partly
State the radio frequency switching device of problem and radio frequency switching method.
According to one aspect of the present invention, a kind of radio frequency switching device is provided, applied to terminal radio frequency Auto-Test System, bag
Controller and electrically tunable filter are included, wherein,
The controller is connected with the electrically tunable filter, is received and is carried target detection frequency range from external equipment
The control instruction of information generates tuning control signal corresponding with target detection frequency range, by the tune according to the control instruction
Humorous control signal transmission is to the electrically tunable filter, to control the radio frequency to be measured that the electrically tunable filter sends terminal to be tested
Signal carries out frequency tuning；
The electrically tunable filter receives radiofrequency signal to be measured from terminal to be tested and from the controller
Control signal is tuned, the centre frequency of the radiofrequency signal to be measured is tuned to target detection frequency according to the tuning control signal
In section, and the radiofrequency signal to be measured after tuning is sent to test cell and is tested.
Optionally, the controller includes：Processor and conversion circuit connected to it, wherein,
The processor is connected with the external equipment, receives the control instruction from the external equipment, according to described in
Control instruction calculates the control electrically tunable filter and the centre frequency of radiofrequency signal to be measured is tuned to target detection frequency range institute
The control voltage needed, and control voltage signal is transmitted to the conversion circuit；
The conversion circuit receives the control voltage signal from the processor, and the control voltage signal is converted
Into control electric current signal, using the control electric current signal as tuning control signal transmission to the electrically tunable filter, institute is controlled
It states electrically tunable filter and frequency tuning is carried out to radiofrequency signal to be measured.
Optionally, the controller further includes power circuit and memory：
The power circuit, is connected to the processor, and is provided for other devices in the processor and controller
Required operating voltage；
The memory, is connected to the processor, and stores the processor is calculated, the control electrically regulated filtering
The centre frequency of radiofrequency signal to be measured is tuned to the control voltage corresponding to different test frequency ranges by device.
Optionally, the external equipment includes following any one：PC terminals, smart mobile phone, tablet computer, notebook electricity
Brain.
Optionally, the external equipment establishes wired connection with the processor by USB data line or serial ports；Or
The external equipment establishes wireless connection with the processor by wifi agreements or Bluetooth protocol.
Optionally, the radio frequency switching device further includes：
Coaxial attenuator is connected with the electrically tunable filter, receives the radiofrequency signal to be measured from the terminal to be tested,
And attenuation processing is carried out to the radiofrequency signal to be measured, the radiofrequency signal to be measured after attenuation processing is sent to the electrically regulated filtering
Device.
Optionally, the radio frequency switching device further includes high-pass filter and two coaxial switches, wherein,
The both ends of the electrically tunable filter are connected to the branch end of two coaxial switches, the coaxial attenuator connection
In the common port of a coaxial switch；
The both ends of the high-pass filter are connected to the branch end that two coaxial switches are not connected with electrically tunable filter；
When the coaxial switch gates the electrically tunable filter, the electrically tunable filter reception is handled through coaxial attenuator
Radiofrequency signal to be measured afterwards, and treated that radiofrequency signal to be measured is handled to attenuator；When the coaxial switch gates institute
When stating high-pass filter, the high-pass filter is received through coaxial attenuator treated radiofrequency signal to be measured, and to attenuator
Treated, and radiofrequency signal to be measured is handled.
According to another aspect of the present invention, a kind of radio frequency switching method is additionally provided, is tested automatically applied to terminal radio frequency
The radio frequency switching device of system, and the radio frequency switching device includes controller, the electrically regulated filtering that it is connected with the controller
Device, this method include：
The electrically tunable filter receives the radiofrequency signal to be measured from terminal to be tested, prepares to the radiofrequency signal to be measured
Centre frequency carry out frequency tuning；
The controller receives the control instruction for carrying target detection band information from external equipment, according to described in
Control instruction generates tuning control signal corresponding with target detection frequency range, and the tuning control signal transmission to the electricity is adjusted
Wave filter；
The electrically tunable filter receives the tuning control signal from the controller, will according to the tuning control signal
The centre frequency of the radiofrequency signal to be measured received is tuned in target detection frequency range, and the radio frequency to be measured after tuning is believed
Number being sent to test cell is tested.
Optionally, the controller includes processor and conversion circuit connected to it, and the controller is received from outer
The control instruction for carrying target detection band information of portion's equipment, according to control instruction generation and target detection frequency range pair
The tuning control signal answered, by the tuning control signal transmission to the electrically tunable filter, including：
Processor in the controller receives the control instruction from the external equipment, according to the control instruction meter
It calculates and controls the electrically tunable filter that the centre frequency of radiofrequency signal to be measured is tuned to the control electricity needed for target detection frequency range
Pressure, and control voltage signal is transmitted to the conversion circuit；
Conversion circuit in the controller receives the control voltage signal from the processor, by the control voltage
Signal is converted into control electric current signal, using the control electric current signal as tuning control signal transmission to the electrically regulated filtering
Device controls the electrically tunable filter to carry out frequency tuning to radiofrequency signal to be measured.
Optionally, the external equipment includes following any one：PC terminals, smart mobile phone, tablet computer, notebook electricity
Brain.
In embodiments of the present invention, controller receives the control for carrying target detection band information from external equipment
Instruction generates tuning control signal corresponding with target detection frequency range according to control instruction, by tuning control signal transmission to electricity
Tunable filter.Electrically tunable filter receives the radiofrequency signal to be measured from terminal to be tested and the tuning control from controller
The centre frequency of radiofrequency signal to be measured is tuned in target detection frequency range by signal according to tuning control signal, and will be after tuning
Radiofrequency signal to be measured be sent to test cell and tested.Due to the tunable frequency of electrically tunable filter in the embodiment of the present invention
It is continuously adjustable, entire communications band can be covered, therefore when subsequently there is new test frequency range to introduce, without opening radio frequency
Cabinet where switching equipment increases new wave filter, only need to the tuned frequency of electrically tunable filter be configured to new frequency range,
So that radio frequency switching device possesses good test frequency scalability.
Further, the embodiment of the present invention substitutes prior art by using the electrically tunable filter of single small volume
In switch filter group, so as to substantially reduce the size of entire radio frequency switching device, improve the portability of equipment.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific embodiment for lifting the present invention.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will be apparent understanding.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 shows that the inside composition structure of the radio frequency switching device of terminal radio frequency Auto-Test System in the prior art is shown
It is intended to；
Fig. 2 shows the inside composition structure diagram of radio frequency switching device according to an embodiment of the invention；
Fig. 3 shows the inside composition structural representation of the controller of radio frequency switching device according to an embodiment of the invention
Figure；And
Fig. 4 shows the flow diagram of radio frequency switching method according to an embodiment of the invention.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
In order to solve the above technical problems, an embodiment of the present invention provides a kind of radio frequency switching device, the radio frequency switching devices
Applied to terminal radio frequency Auto-Test System.Referring to Fig. 2, radio frequency switching device includes electrically tunable filter 10 and control connected to it
Device 20 processed, wherein, controller 20 receives the control for carrying target detection band information from external equipment (not shown in Fig. 2)
System instruction generates tuning control signal corresponding with target detection frequency range according to control instruction, by tuning control signal transmission extremely
Electrically tunable filter 10, electrically tunable filter 10 to be controlled to carry out frequency tuning to the radiofrequency signal to be measured that terminal to be tested is sent.It should
In embodiment, YTF (YIG tuned filter, YIG tune wave filter) may be employed in electrically tunable filter 10, wherein
YIG (yttrium iron garnet, yttrium iron garnet) is a kind of iron oxide synthetic crystal with multinomial magnetic characteristic, is commonly used
To adjust laser.
Electrically tunable filter 10 receives the radiofrequency signal to be measured from terminal to be tested and the tuning control from controller 20
The centre frequency of radiofrequency signal to be measured is tuned in target detection frequency range by signal processed according to tuning control signal, and will tuning
Radiofrequency signal to be measured afterwards is sent to test cell and is tested.In this embodiment, the control signal pair of controller 20 is passed through
The radiofrequency signal to be measured that electrically tunable filter 10 receives carries out frequency tuning, it is made to filter out garbage signal.
In the embodiment of the present invention, since the tunable frequency of electrically tunable filter 10 is continuously adjustable, it can cover entire
Communications band, therefore when subsequently there is new test frequency range to introduce, increase without cabinet where opening radio frequency switching device new
Wave filter, only the tuned frequency of electrically tunable filter 10 need to be configured to new frequency range so that radio frequency switching device have
For good test frequency scalability.
Further, the embodiment of the present invention substitutes prior art side by using the electrically tunable filter 10 of single small volume
Switch filter group in case so as to substantially reduce the size of entire radio frequency switching device, improves the portability of equipment.
In the embodiment of the present invention, radio frequency switching device is referred to as radio frequency link switching equipment, is suitable for GSM
(Global System for Mobile Communication, global system for mobile communications), CDMA (Code Division
Multiple Access, CDMA), CDMA2000, WCDMA (Wideband Code Division Multiple
Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code Division
Multiple Access, TD SDMA), LTE (Long Term Evolution, universal mobile communications technology
Long Term Evolution) etc. standards test application.
In the Shi Lizhong, external equipment (not shown in Fig. 3) can include PC terminals, smart mobile phone, tablet computer, notes
This computer etc..Also, external equipment and processor D1 the modes such as can be connected by USB data line or serial ports and establish wired company
It connects, wherein, uart (universal asynchronous receiving-transmitting transmitter, Universal Asynchronous Receiver/ may be employed in serial ports
Transmitter) etc..The mode that USB data line or serial ports uart are shown in Fig. 3 establishes connection with external equipment.In addition,
External equipment can also establish wireless connection with processor D1 by modes such as wifi agreements or Bluetooth protocols.The embodiment of the present invention
Specific restriction is not done to the connection mode of external equipment and processor D1.
Referring to Fig. 2 and 3, in an embodiment of the present invention, controller 20 can also include processor D1 and connected to it
Conversion circuit D2, wherein, processor D1 receives the control instruction from external equipment, and calculates control electricity according to control instruction
Radiofrequency signal to be measured is tuned to the control voltage needed for target detection frequency range by tunable filter 10, and control voltage signal is transmitted
To conversion circuit D2.In the embodiment, radiofrequency signal to be measured is tuned, what is actually tuned is in radiofrequency signal to be measured
Frequency of heart.
Then, conversion circuit D2 receives the control voltage signal from processor D1, and control voltage signal is converted into
Control electric current signal using control electric current signal as tuning control signal transmission to electrically tunable filter 10, controls electrically tunable filter
10 pairs of radiofrequency signals to be measured carry out frequency tuning.
With continued reference to Fig. 2 and 3, in this embodiment, controller 20 can also include power circuit D3 and memory D4 (such as
Flash memory (Flash Memory), RAM, ROM etc.), wherein, power circuit D3 is connected with processor D1, for for processor D1
And other devices (such as converting electrical storage D4) in controller 20 provide each operating voltage needed for work.Memory
D4 is also connected with processor D1, for calculating control electrically tunable filter 10 by the centre frequency of radiofrequency signal to be measured in processor D1
During being tuned to the control voltage needed for target detection frequency range, by different target test frequency range corresponding to control voltage into
Row storage.
It is stored by the way that different target to be tested to the control voltage corresponding to frequency range, it is same to be measured so as to ought subsequently have
When radiofrequency signal needs to be tuned to target detection frequency range, corresponding control voltage can be directly obtained, without processor again
Secondary calculate controls electrically tunable filter that the centre frequency of radiofrequency signal to be measured is tuned to the control electricity needed for target detection frequency range
Pressure.The work load of processor is not only alleviated, is also effectively improved the treatment effeciency of processor, is got in time corresponding
Control voltage.
With continued reference to Fig. 2, in an embodiment of the present invention, radio frequency switching device can also include coaxial attenuator 30.Its
In, coaxial attenuator 30 can be connected with electrically tunable filter 10, received the radiofrequency signal to be measured from terminal to be tested, and treated
It surveys radiofrequency signal and carries out attenuation processing, the radiofrequency signal to be measured after attenuation processing is sent to electrically tunable filter 10.In the implementation
In example, the attenuation of coaxial attenuator 30 can be 40db.The coaxial attenuator 30 is placed on the input terminal of radio frequency switching device,
RF IN i.e. shown in Fig. 2, it is therefore an objective to for reducing the power of radiofrequency signal to be measured, make to penetrate into the to be measured of electrically tunable filter 10
Frequency signal power is in the range of 10 safety level of electrically tunable filter.Make one end that electrically tunable filter 10 is not connected with coaxial attenuator 30
For the output terminal of radio frequency switching device, i.e., RF OUT shown in Fig. 2.
With continued reference to Fig. 2, in an embodiment of the present invention, radio frequency switching device can also include high-pass filter F1
(HPF, High Pass Filter) and two coaxial switches (SW1 and SW2 i.e. in figure), wherein, the two of electrically tunable filter 10
End is connected to the branch ends of two coaxial switches, and coaxial attenuator 30 is connected to the public of coaxial switch (i.e. SW1)
End.The both ends of high-pass filter are connected to the branch end that two coaxial switches are not connected with electrically tunable filter 10.
When coaxial switch gates electrically tunable filter 10, electrically tunable filter 10 receives that treated treats through coaxial attenuator 30
Radiofrequency signal is surveyed, and treated that radiofrequency signal to be measured is handled to attenuator.When coaxial switch gates high-pass filter,
High-pass filter is received through treated the radiofrequency signal to be measured of coaxial attenuator 30, and treated that radio frequency to be measured is believed to attenuator
It number is handled.In the embodiment depicted in figure 2, the single-pole double-throw switch (SPDT) that coaxial switch uses, there are one common port and two for tool
Branch end.It is of course possible to be other kinds of coaxial switch, it is not specifically limited herein.
In an embodiment of the present invention, in order to make radio frequency switching device easy to carry, radio frequency switching device can also be set
For meter in a Portable machine box, Portable machine box can include the functional link of each test index, and be stayed on panel
There is radio frequency to output and input interface, link indicating area and link parameter illustrate region (coaxial attenuation as shown in Figure 2
Parameters shown on device, high-pass filter etc.).
Below using external equipment as laptop, terminal to be tested is computer, and radiofrequency signal to be measured shares 5 not
Exemplified by the radiofrequency signal to be measured of same frequency, the course of work of radio frequency switching device of the present invention is specifically introduced.
First, it is the preparation stage, before radio frequency switching device works on power, it is preheated ten minutes, so that electric
Tunable filter reaches a stable state.And be attached the use USB of laptop and radio frequency switching device, and make electricity
Tunable filter and coaxial attenuator are in connected state.
Then, after connection is completed, computer sends first radio frequency to be measured to the controller of radio frequency switching device to be believed
Number.After controller receives first radiofrequency signal to be measured from computer, prepare the centre frequency to the radiofrequency signal to be measured
Carry out frequency tuning.
At this point, by laptop first aim is set to test frequency range, and first aim test frequency range is carried
In control instruction, be sent to the controller of radio frequency switching device using USB data line, controller according to control instruction generation with
The corresponding tuning control signal of first aim test frequency range, by tuning control signal transmission to electrically tunable filter.
Electrically tunable filter tunes the centre frequency of first radiofrequency signal to be measured according to the tuning control signal received
To first aim test frequency range, and first radiofrequency signal to be measured after tuning is sent to terminal radio frequency and tested automatically and is
The test cell of system is tested, and test cell starts to test radio frequency testing item all under this frequency range.
Electrically tunable filter can return after first radiofrequency signal to be measured after tuning is sent to test cell to computer
A response message is returned, computer to be notified to send second radiofrequency signal to be measured.According to above-mentioned principle, pass through laptop
Second target is set to test frequency range, and tune corresponding with second target test frequency range is generated according to control instruction by controller
Humorous control signal, so electrically tunable filter according to the tuning control signal that receives by the center of second radiofrequency signal to be measured frequently
Rate is tuned in second target test frequency range.
Similarly, electrically tunable filter can to third and fourth, the centre frequencies of five radiofrequency signals to be measured be tuned to respective correspondence
Target detection frequency range in.And then the radio frequency testing item of all required test frequency ranges is sequentially completed by test cell.
Radio frequency switching device is closed after being completed.
In the embodiment, after subsequently thering is new test frequency range to introduce, increase new wave filter without opening cabinet, only need
Software on laptop is upgraded, and pass through to the controller of radio frequency switching device and send control instruction, it will
The tuned frequency of electrically tunable filter is configured to new frequency range, has good test frequency scalability.In addition, the present invention is real
Apply that the radiofrequency signal to be measured of 5 different frequencies in example is only schematical, and the embodiment of the present invention is not specifically limited this.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of radio frequency switching method, and this method is applied to eventually
Hold the radio frequency switching device of radio frequency automatic test system, the electricity tune that radio frequency switching device includes controller, it is connected with controller
Wave filter, referring to Fig. 4, radio frequency switching method may comprise steps of S402 to step S406.
Step S402, electrically tunable filter receive the radiofrequency signal to be measured from terminal to be tested, prepare to believe radio frequency to be measured
Number centre frequency carry out frequency tuning.
Step S404, controller receive the control instruction for carrying target detection band information from external equipment, according to
Tuning control signal corresponding with target detection frequency range is generated according to control instruction, by tuning control signal transmission to electrically regulated filtering
Device.
In this step, external equipment can include PC terminals, smart mobile phone, tablet computer, laptop etc..
Step S406, electrically tunable filter receive the tuning control signal from controller, will be connect according to tuning control signal
The centre frequency of the radiofrequency signal to be measured received is tuned in target detection frequency range, and the radiofrequency signal to be measured after tuning is sent
It is tested to test cell.
Step S404 is seen above, in an embodiment of the present invention, controller includes processor and conversion connected to it
Circuit, controller generate tuning control signal corresponding with target detection frequency range according to the control instruction received, and will tuning
The process of control signal transmission to electrically tunable filter specifically includes：
Processor receives the control instruction from external equipment, and calculating control electrically tunable filter according to control instruction will treat
The centre frequency of survey radiofrequency signal is tuned to the control voltage needed for target detection frequency range, and control voltage signal is transmitted to and is turned
Change circuit.
Conversion circuit in controller receives the control voltage signal from processor, and control voltage signal is converted into controlling
Current signal processed is treated using control electric current signal as tuning control signal transmission to electrically tunable filter, control electrically tunable filter
It surveys radiofrequency signal and carries out frequency tuning.
In the specification provided in this place, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
Shield the present invention claims the more features of feature than being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Those skilled in the art, which are appreciated that, to carry out adaptively the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.It can be the module or list in embodiment
Member or component be combined into a module or unit or component and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it may be employed any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and attached drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Profit requirement, summary and attached drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than other feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of arbitrary
It mode can use in any combination.
The all parts embodiment of the present invention can be with hardware realization or to be run on one or more processor
Software module realize or realized with combination thereof.It will be understood by those of skill in the art that it can use in practice
Microprocessor or digital signal processor (DSP) come realize in radio frequency switching device according to embodiments of the present invention some or
The some or all functions of person's whole component.The present invention is also implemented as performing one of method as described herein
Divide either whole equipment or program of device (for example, computer program and computer program product).Such this hair of realization
Bright program can may be stored on the computer-readable medium or can have the form of one or more signal.It is such
Signal can be downloaded from internet website to be obtained either providing on carrier signal or providing in the form of any other.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.If in the unit claim for listing equipment for drying, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of radio frequency switching device, applied to terminal radio frequency Auto-Test System, including controller and electrically tunable filter,
In,
The controller is connected with the electrically tunable filter, is received and is carried target detection band information from external equipment
Control instruction, corresponding with target detection frequency range tuning control signal is generated according to the control instruction, by the tuning control
Signal transmission processed is to the electrically tunable filter, to control the radiofrequency signal to be measured that the electrically tunable filter sends terminal to be tested
Carry out frequency tuning；
The electrically tunable filter receives the radiofrequency signal to be measured from terminal to be tested and the tuning from the controller
The centre frequency of the radiofrequency signal to be measured is tuned to target detection frequency range by control signal according to the tuning control signal
It is interior, and the radiofrequency signal to be measured after tuning is sent to test cell and is tested.
2. radio frequency switching device according to claim 1, which is characterized in that the controller includes：Processor and and its
The conversion circuit of connection, wherein,
The processor is connected with the external equipment, receives the control instruction from the external equipment, according to the control
Instruction calculates the control electrically tunable filter and the centre frequency of radiofrequency signal to be measured is tuned to needed for target detection frequency range
Voltage is controlled, and control voltage signal is transmitted to the conversion circuit；
The conversion circuit receives the control voltage signal from the processor, and the control voltage signal is converted into controlling
Current signal processed using the control electric current signal as tuning control signal transmission to the electrically tunable filter, controls the electricity
Tunable filter carries out frequency tuning to radiofrequency signal to be measured.
3. radio frequency switching device according to claim 2, which is characterized in that the controller further includes power circuit and deposits
Reservoir, wherein,
The power circuit, is connected to the processor, and is provided for other devices in the processor and controller required
Operating voltage；
The memory, is connected to the processor, and storing the processor is calculated, the control electrically tunable filter will
The centre frequency of radiofrequency signal to be measured is tuned to the control voltage corresponding to different test frequency ranges.
4. according to claim 1-3 any one of them radio frequency switching devices, which is characterized in that the external equipment includes following
Any one：PC terminals, smart mobile phone, tablet computer, laptop.
5. the radio frequency switching device according to Claims 2 or 3, which is characterized in that
The external equipment establishes wired connection with the processor by USB data line or serial ports；Or
The external equipment establishes wireless connection with the processor by wifi agreements or Bluetooth protocol.
6. according to claim 1-3 any one of them radio frequency switching devices, which is characterized in that further include：
Coaxial attenuator is connected with the electrically tunable filter, receives the radiofrequency signal to be measured from the terminal to be tested, and right
The radiofrequency signal to be measured carries out attenuation processing, and the radiofrequency signal to be measured after attenuation processing is sent to the electrically tunable filter.
7. radio frequency switching device according to claim 6, which is characterized in that further include high-pass filter and two are coaxially opened
It closes, wherein,
The both ends of the electrically tunable filter are connected to the branch end of two coaxial switches, and the coaxial attenuator is connected to one
The common port of a coaxial switch；
The both ends of the high-pass filter are connected to the branch end that two coaxial switches are not connected with electrically tunable filter；
When the coaxial switch gates the electrically tunable filter, through coaxial attenuator, treated for the electrically tunable filter reception
Radiofrequency signal to be measured, and treated that radiofrequency signal to be measured is handled to attenuator；When the coaxial switch gates the height
During bandpass filter, the high-pass filter is received through coaxial attenuator treated radiofrequency signal to be measured, and to attenuator processing
Radiofrequency signal to be measured afterwards is handled.
8. a kind of radio frequency switching method, applied to the radio frequency switching device of terminal radio frequency Auto-Test System, and the radio frequency is cut
Exchange device includes controller, the electrically tunable filter that it is connected with the controller, and this method includes：
The electrically tunable filter receives the radiofrequency signal to be measured from terminal to be tested, prepares in the radiofrequency signal to be measured
Frequency of heart carries out frequency tuning；
The controller receives the control instruction for carrying target detection band information from external equipment, according to the control
Instruction generates tuning control signal corresponding with target detection frequency range, by the tuning control signal transmission to the electrically regulated filtering
Device；
The electrically tunable filter receives the tuning control signal from the controller, will be received according to the tuning control signal
To the centre frequency of the radiofrequency signal to be measured be tuned in target detection frequency range, and the radiofrequency signal to be measured after tuning is sent out
It send to test cell and is tested.
9. according to the method described in claim 8, it is characterized in that, the controller includes processor and conversion connected to it
Circuit, the controller receives the control instruction for carrying target detection band information from external equipment, according to the control
System instruction generates tuning control signal corresponding with target detection frequency range, and the tuning control signal transmission to the electricity is adjusted filter
Ripple device, including：
Processor in the controller receives the control instruction from the external equipment, is calculated according to the control instruction
Control the electrically tunable filter that the centre frequency of radiofrequency signal to be measured is tuned to the control voltage needed for target detection frequency range, and
Control voltage signal is transmitted to the conversion circuit；
Conversion circuit in the controller receives the control voltage signal from the processor, by the control voltage signal
Control electric current signal is converted into, using the control electric current signal as tuning control signal transmission to the electrically tunable filter, control
It makes the electrically tunable filter and frequency tuning is carried out to radiofrequency signal to be measured.
10. radio frequency switching method according to claim 8 or claim 9, which is characterized in that the external equipment includes following arbitrary
One：PC terminals, smart mobile phone, tablet computer, laptop.
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| CN201711182528.5A CN108092846A (en) | 2017-11-23 | 2017-11-23 | A kind of radio frequency switching device and radio frequency switching method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110934558A (en) * | 2019-12-05 | 2020-03-31 | 深圳市资福医疗技术有限公司 | Data communication system and method of capsule endoscope |
| CN111641433A (en) * | 2020-05-28 | 2020-09-08 | 上海鸿晔电子科技股份有限公司 | Data transceiving method of electrically tunable filter and electrically tunable filter |
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| CN202167621U (en) * | 2011-07-05 | 2012-03-14 | 中国航空无线电电子研究所 | Electric tuning filtering active antenna used for DGPS beacon receiver |
| CN103051393A (en) * | 2012-11-29 | 2013-04-17 | 国家无线电监测中心检测中心 | Method and device for radio frequency test of wireless communication terminal of private network |
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| US20100009639A1 (en) * | 2003-10-20 | 2010-01-14 | Broadcom Corporation | Radio frequency unit analog level detector and feedback control system |
| CN202167621U (en) * | 2011-07-05 | 2012-03-14 | 中国航空无线电电子研究所 | Electric tuning filtering active antenna used for DGPS beacon receiver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110934558A (en) * | 2019-12-05 | 2020-03-31 | 深圳市资福医疗技术有限公司 | Data communication system and method of capsule endoscope |
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