CN105450250B - Filter, control method and electronic equipment - Google Patents
Filter, control method and electronic equipment Download PDFInfo
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- CN105450250B CN105450250B CN201410495850.3A CN201410495850A CN105450250B CN 105450250 B CN105450250 B CN 105450250B CN 201410495850 A CN201410495850 A CN 201410495850A CN 105450250 B CN105450250 B CN 105450250B
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Abstract
Provide a kind of filter, control method and electronic equipment.Electronic equipment can operate at the first communication pattern using the first signal frequency range and the second communication pattern using second signal frequency range, and the first signal frequency range includes overlapped frequency bands Chong Die with the frequency of second signal frequency range.The filter includes：First filter is in the first communication mode filtered the signal in the first signal frequency range other than specific overlapping frequency range；Second filter is in the second communication mode filtered the signal of the second signal frequency range；The signal of the specific overlapping frequency range is switched to the second filter by switch unit in the first communication mode, to be filtered to the signal of the specific overlapping frequency range using the second filter.In the technical solution according to the embodiment of the present application, can integration land productivity meet different communication requirements with the device in electronic equipment and ensure that communication performance.
Description
Technical field
The present invention relates to electronic technology fields, more particularly, to a kind of filter, control method and including the filtering
The electronic equipment of device.
Background technology
Currently, many electronic equipments can be transmitted and/or receive data, to greatly facilitate the biography of information and data
It is defeated.The electronic equipment is such as including computer, personal digital assistant, mobile communication terminal, audio player.Each frequency range
Frequency resource be all typically canonicalized to carry out the communication of different mode, to meet communication needs in varied situations.
With the increase of communications band number, the number of devices in electronic equipment also gradually increases, and each device
It can require that influencing each other to avoid different communication frequency range is also gradually increased.Moreover, in order to improve the capacity of communication, each communication
The range of frequency range is also gradually increasing, and the design of this all electron equipment brings challenge.It is therefore desirable to be able to be suitably set
Device in electronic equipment ensures the performance of electronic equipment.
Invention content
The embodiment of the present application provides a kind of filter, control method and the electronic equipment including the filter,
Can integration land productivity meet different communication demand with the device in electronic equipment and ensure that communication performance.
In a first aspect, providing a kind of filter, it is applied to an electronic equipment, which can operate at use
First communication pattern of the first signal frequency range and the second communication pattern for using second signal frequency range, the first signal frequency range packet
The overlapped frequency bands Chong Die with the frequency in second signal frequency range are included, the filter may include：First filter, when electronics is set
It is standby when working in the first communication pattern, in the first signal frequency range in addition to as at least part of of the overlapped frequency bands
Signal except specific overlapping frequency range is filtered；Second filter, when electronic device works are in the second communication pattern, to institute
The signal for stating second signal frequency range is filtered；Switch unit, when electronic device works are in the first communication pattern, by the spy
The signal for determining overlapped frequency bands is switched to the second filter, to utilize the second filter to the specific overlapping frequency range
Signal is filtered.
With reference to first aspect, in a kind of realization method of first aspect, the first signal frequency range can be more than predetermined band
It is wide.
With reference to first aspect and its above-mentioned realization method, in another realization method of first aspect, second filtering
Device can be duplexer, the duplexer have for dock collect mail number reception frequency range being filtered and for emit signal into
The transmitting frequency range of row filtering, the reception frequency range and the transmitting frequency range be not be overlapped.
With reference to first aspect and its above-mentioned realization method, in another realization method of first aspect, when electronic equipment work
When making in the first communication pattern, the switch unit can using the reception frequency range and the transmitting frequency range of the duplexer come
Filter the reception signal in the specific overlapping frequency range.
With reference to first aspect and its above-mentioned realization method, in another realization method of first aspect, when electronic equipment work
When making in the first communication pattern, the switch unit can using the reception frequency range and the transmitting frequency range of the duplexer come
Filter the transmission signal in the specific overlapping frequency range.
With reference to first aspect and its above-mentioned realization method, in another realization method of first aspect, the electronic equipment
It may include that antenna and transceiver, the filter can be used for being filtered the signal transmitted between antenna and transceiver.
With reference to first aspect and its above-mentioned realization method, in another realization method of first aspect, first communication
Pattern can be time-division multiplex communication pattern, and the second communication pattern can be frequency division multiplex communication pattern.
Second aspect, provides a kind of control method for electronic equipment, the electronic equipment include first filter and
Second filter, and can operate at the first communication pattern using the first signal frequency range and the using second signal frequency range
Two communication patterns, the first signal frequency range include overlapped frequency bands Chong Die with the frequency in second signal frequency range, the control
Method may include：Determine the electronic device works in the first communication pattern or the second communication pattern；Work as electronic device works
When the first communication pattern, using first filter in the first signal frequency range in addition to as the overlapped frequency bands at least
Signal except the specific overlapping frequency range of a part is filtered, and using the second filter to specific overlapping frequency
The signal of section is filtered；When electronic device works are in the second communication pattern, using second filter to the second signal
The signal of frequency range is filtered.
In conjunction with second aspect, in a kind of realization method of second aspect, the first signal frequency range can be more than predetermined
Bandwidth.
In conjunction with second aspect and its above-mentioned realization method, in another realization method of second aspect, second filtering
Device can be duplexer, the duplexer have for dock collect mail number reception frequency range being filtered and for emit signal into
The transmitting frequency range of row filtering, the reception frequency range and the transmitting frequency range be not be overlapped.
In conjunction with second aspect and its above-mentioned realization method, in another realization method of second aspect, when electronic equipment work
When making in the first communication pattern, it is described using second filter to the signal of the specific overlapping frequency range be filtered including：Profit
With the reception frequency range of the duplexer and the transmitting frequency range come filter reception signal in the specific overlapping frequency range or
Send one of signal.
In conjunction with second aspect and its above-mentioned realization method, in another realization method of second aspect, the electronic equipment
It may also include antenna and transceiver, the first filter and second filter are used for being transmitted between antenna and transceiver
Signal is filtered.
The third aspect provides a kind of electronic equipment, including filter as described above.
In the technology according to the filter of the embodiment of the present application, control method and electronic equipment including the filter
In scheme, by carrying out signal filtering, Neng Goutong using the filter for the second communication pattern in the first communication mode
Land productivity is closed to meet different communication requirements with the device in electronic equipment and ensure that communication performance.
Description of the drawings
It, below will be in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the embodiment of the present application
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the application
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is frequency range distribution of the electronic equipment under different communication modes schematically illustrated in the embodiment of the present application；
Fig. 2 is the block diagram for schematically illustrating the filter according to the embodiment of the present application；
Fig. 3 is the working frequency range of the filter in the filter schematically illustrated in Fig. 2；
Fig. 4 is the application example schematically illustrated according to the filter of the embodiment of the present application；
Fig. 5 schematically illustrates the flow chart of the control method for electronic equipment according to the embodiment of the present application.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation describes, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.
In the present invention, when being described to discrete cell/component between first unit/component and second unit/component
When, may exist intervening elements between the discrete cell/component and first unit/component or second unit/component, it can also
There is no intervening elements；When being described to discrete cell/component and connecting other components, the discrete cell/component can with it is described
Other units/components are directly connected to without intervening elements/component, can not also directly connect with other units/components
It connects and there is intervening elements/component.
Transmitter, receiver and antenna are usually set in electronic equipment to be communicated.Via antenna received signal quilt
It is supplied to receiver, to obtain the communication data carried in aerial signal.Transmitter can export wherein to carry to be sent
The radiofrequency signal of communication data, which is transferred to antenna by the electronic device, and radiate.The electronics
Equipment usually can be communicated using different communication patterns, to meet different communication requirements.For example, electronic equipment is logical
Letter pattern includes but not limited to frequency division duplex (FDD, Frequency Division Duplex) communication pattern, time division duplex
(TDD, Time Division Duplex) communication pattern, CDMA (CDMA, Code Division Multiple
Access) communication pattern etc..In each communication pattern, in order to improve the quality of signal of communication, it may be necessary to filter be arranged
Signal in communications band is filtered, to filter out the interference of the signal except communications band.The electronic equipment is, for example,
Smart mobile phone, tablet computer etc. can also be the communication equipments such as base station, relay station.Here, only with the electronic equipment
To be described for mobile terminal.However, the concrete type of the electronic equipment does not constitute the limitation to the embodiment of the present application.
Fig. 1 is frequency range distribution of the electronic equipment under different communication modes schematically illustrated in the embodiment of the present application.
The electronic equipment can operate at the first communication pattern using the first signal frequency range and second using second signal frequency range and lead to
Letter pattern.
As shown in Figure 1, horizontal axis is the frequency f of signal, which illustrates the frequencies occupied by different communication patterns.Scheming
In 1, electronic equipment uses the first signal frequency range from frequency f2 to f5 under the first communication pattern, such as the twill region in Fig. 1
It is shown；The second signal frequency range of frequency of use f1 to f3 and f4 to f6 under the second communication pattern, such as the net region in Fig. 1
It is shown.According to Fig. 1 as can be seen that the first signal frequency range and second signal frequency range are in the frequency that frequency is f2 to f3 and f4 to f5
It is overlapped in section.That is, the first signal frequency range includes the overlapped frequency bands Chong Die with the frequency in second signal frequency range.Under
Wen Zhong, with FDD communication patterns be the first communication pattern, TDD communication patterns are that the second communication pattern is described, this is only to show
Example.The specific embodiment of the application can be applied to any two communication pattern with overlapped frequency bands of electronic equipment.Institute in Fig. 1
The band limits of the first signal frequency range and second signal frequency range shown is only schematical.Any two signals frequency for having overlapping
Section all can serve as the first above-mentioned signal frequency range and second signal frequency range.For example, second signal frequency range is also possible to be completely in
In the range of first signal frequency range.
In traditional technical solution, dedicated filter is set for the first signal frequency range (for example, frequency f2 to f5)
For the first communication pattern, and it is dedicated for second signal frequency range (for example, frequency f1 to f3 and f4 to f6) setting
Filter is for the second communication pattern.However, as shown in Figure 1, the first signal frequency range is frequency range from f1 to f3, model
It encloses usually very wide.In the case where frequency range is very wide, in order to keep the filter for being exclusively used in the first communication pattern with good performance,
Such as with lower insertion loss, then this may be caused to be exclusively used in the increase of the cost of the filter of the first communication pattern.Even
The case where being likely to occur both the bandwidth that cannot take into account filter and performance, to reduce communication performance.
In the technical solution according to the embodiment of the present application, utilized in the first communication mode for the second communication pattern
Filter carries out signal filtering, can integration land productivity meet different communication requirements and guarantee with the device in electronic equipment
Communication performance.That is, when electronic device works are in the first communication pattern, lead to for second using in electronic equipment
The filter of letter pattern is filtered the part signal in the first signal frequency range under the first communication pattern, so as to drop
The design difficulty of the low filter for being used for the first communication pattern.
Fig. 2 is the block diagram for schematically illustrating the filter 200 according to the embodiment of the present application.The filter 200 can
Applied to an electronic equipment.As shown in Figure 1, the electronic equipment can operate at the first communication pattern using the first signal frequency range
With the second communication pattern for using second signal frequency range, the first signal frequency range includes and the frequency weight in second signal frequency range
Folded overlapped frequency bands.
As shown in Fig. 2, the filter 200 may include：First filter 210, when electronic device works are logical in first
When letter pattern, in the first signal frequency range in addition at least part of specific overlapping frequency range as the overlapped frequency bands it
Outer signal is filtered；Second filter 220, when electronic device works are in the second communication pattern, to the second signal
The signal of frequency range is filtered；Switch unit 230, when electronic device works are in the first communication pattern, by the specific overlapping
The signal of frequency range is switched to the second filter, with using the second filter to the signal of the specific overlapping frequency range into
Row filtering.
Hereinafter, it is that B41 frequency range examples ranging from from 2496MHz to 2690MHz are described with signal frequency range.Fig. 3 is
Schematically illustrate the working frequency range of the filter in the filter in Fig. 2.Horizontal axis in the Fig. 3 is using MHz as unit
Frequency.As shown in figure 3, for the first communication pattern the first signal frequency range be for TDD communication patterns ranging from from
The frequency range (as shown in the hatched example areas and black region of the lower part in Fig. 3) of 2496MHz to 2690MHz, for the second communication mould
The second signal frequency range of formula be for FDD communication patterns ranging from from 2496MHz to 2570MHz and from 2620MHz to
The frequency range of 2690MHz (as shown in the net region in Fig. 3).Overlapped frequency bands between first signal frequency range and second signal frequency range
It is the frequency range from 2496MHz to 2570MHz and from 2620MHz to 2690MHz, i.e. second signal frequency range is completely in the first signal
In the range of frequency range.
When electronic device works are in TDD communication patterns, surface acoustic wave (surface acoustic are typically used
Wave) SAW filter is as the first filter 210.In TDD communication patterns, the transmitting of electronic equipment and reception signal
It is to be carried out in the different time-gap of same frequency channel, is detached, be not required to using the certain guarantee time each other
The frequency of symmetrical frequency band is distributed, and can flexibly be controlled in each channel, change the length ratio for sending and receiving the period.Cause
This can make full use of limited Radio Spectrum Resource when carrying out asymmetric data transmission.The SAW filter can be set
It sets between TDD transceivers and TDD antennas for TDD communication patterns, for travelling to and fro between the TDD transceivers and TDD antennas
Between signal be filtered.
It, may if the SAW filter is designed as to cross over entire first signal frequency range in traditional technical solution
Cause its insertion loss to increase, and its cost of manufacture may be caused to increase, this is big in the first signal frequency range of first filter
It is especially prominent when specific bandwidth.
In the technical solution of the embodiment of the present application, the SAW filter in the first signal frequency range in addition to as institute
The signal except at least part of specific overlapping frequency range of overlapped frequency bands is stated to be filtered.The specific overlapping frequency range is the first letter
Part or all of overlapped frequency bands number between frequency range and second signal frequency range.In figure 3, which refers to
A part for the overlapped frequency bands, the i.e. part from 2496MHz to 2550MHz and from 2655MHz to 2690MHz, in Fig. 3
Shown in hatched example areas.That is, the SAW filter as first filter need not be to entire first signal frequency range (example
Such as, from 2496MHz to 2690MHz) be filtered, but in the entire first signal frequency range in addition to specific overlapping frequency range
Except part (for example, 2550MHz to 2655Mhz) be filtered.Therefore, reduce the bandwidth of the SAW filter, correspondingly
Reduce its cost of manufacture and difficulty.
In figure 3, the bandwidth of SAW filter is shown to the middle section of entire first signal frequency range, but it may be used also
To be the other parts of entire first signal frequency range.For example, the bandwidth of the SAW filter can be entire first signal frequency range
Low frequency part, such as from 2496MHz to 2620MHz, specific overlapping frequency range at this time are the frequency ranges from 2620MHz to 2690MHz；
The bandwidth of the SAW filter can also be the high frequency section of entire first signal frequency range, such as from 2570MHz to 2690MHz, this
When specific overlapping frequency range be frequency range from 2496MHz to 2570MHz.
As described above, when the first signal frequency range under the first communication pattern is higher than bandwidth, first filter is set
Count that facing challenges are especially prominent, so as to by application the embodiment of the present application come reduce first filter design difficulty and at
This.The bandwidth can change according to the technical characteristic of filter, and can change with the manufacturing technology of filter.
In addition, SAW filter is only schematical, the type and performance of first filter do not constitute the limit to the embodiment of the present application
System.
When electronic device works are in FDD communication patterns, typically use duplexer as the second filter 220.
The duplexer has the transmitting frequency for docking the collection of letters number reception frequency range being filtered and for being filtered to transmitting signal
Section, the reception frequency range and the transmitting frequency range be not be overlapped.
In FDD communication patterns, two independent channel frequencies are needed, a channel is used for transmission information downwards, another
A channel is used for being passed up information.There are a protection frequency ranges between two channels, to prevent neighbouring transmitter and reception
It generates and interferes with each other between machine.As shown in figure 3, the 2496MHz to 2570MHz is for transmitting signal from terminal to base station
Uplink band (emits frequency range), and the 2620MHz to 2690MHz is the band downlink for transmitting signal from base station to terminal
(receiving frequency range).The FDD communication patterns mode can make full use of the frequency spectrum of uplink and downlink when supporting symmetrical service.Duplexer is
The transmitting signal of electronic equipment and reception signal are isolated by the typical device in FDD communication patterns, are ensured to receive and be emitted
It can work normally simultaneously.In other words, faint reception signal should be coupled by duplexer comes, again by larger transmitting work(
Rate is fed to antenna up, and the two is required respectively to complete its function without influencing each other.
When electronic device works are in FDD communication patterns, the duplexer as second filter 220 is to the second signal
The signal of frequency range is filtered.Specifically, in the uplink direction, duplexer carries out the signal of the transmitting frequency range in Fig. 3
Filtering；On downlink direction, duplexer is filtered the signal of the reception frequency range in Fig. 3.It should be noted that when the second communication
When pattern is not FDD communication patterns, which can not be duplexer, but other types of be suitable for second
The filter of communication pattern.The type and performance of the second filter 220 do not constitute the limitation to the embodiment of the present application.
As described above, in the first communication mode, first filter 210 be only used for in the first signal frequency range in addition to
Signal except specific overlapping frequency range is filtered.For the specific overlapping frequency range, need to be cut by switch unit 230
It brings and is filtered using second filter.That is, when electronic device works are in the first communication pattern, switch unit 230
The signal of the specific overlapping frequency range is switched to the second filter, to utilize the second filter to described specific heavy
The signal of folded frequency range is filtered.The switch unit 230 can be for example made of RF switch.
In the case of the second filter 220 is duplexer, when electronic device works are in the first communication pattern, institute
Switch unit 230 is stated using the reception frequency range and the transmitting frequency range of the duplexer to filter the specific overlapping frequency range
In reception signal (i.e. down link signal).The specific overlapping frequency range be, for example, 2496MHz to 2550MHz in Fig. 3 and
2655MHz to 2690MHz.The filtering performance of the transmitting frequency range of duplexer is typically due to it and receives the strainability of frequency range, therefore
Signal reception is carried out using the transmitting frequency range of duplexer in the first communication mode, can usually meet the first communication pattern
The demand of signal receiving performance.In addition, when electronic device works are in the first communication pattern, the switch unit 230 also utilizes
The reception frequency range of the duplexer and the transmitting frequency range filter the transmission signal in the specific overlapping frequency range (on i.e.
Downlink signal).
From the above description, it can be seen that different from traditional technology first filter and second filter be respectively dedicated the
The second filter of one communication pattern and the second communication pattern, the embodiment of the present application can be used for the first communication pattern and the second communication
Both modes, and correspondingly reduce the bandwidth of operation of first filter, to reduce first filter design difficulty and
Cost.
In the technical solution according to the filter of the embodiment of the present application, by the first communication mode using being used for
The filter of second communication pattern carries out signal filtering, can integration land productivity met with the device in electronic equipment it is different
Communication requirement and it ensure that communication performance.
Fig. 4 is the application example for schematically illustrating the filter 200 according to the embodiment of the present application.In the diagram of Fig. 4
In, electronic equipment uses identical signal transceiver TRx and antenna ANT under TDD communication patterns and FDD communication patterns.Signal
Transceiver TRx is connected to first filter 210 or second filter 220 via first switch 231.The first switch 231 carries out
Switching control by signal transceiver TRx to be connected to one of first filter 210 or second filter 220.First filter 210
Or second filter 220 is connected to antenna ANT via second switch 232.The first switch 231 switches over control with by antenna
ANT is connected to one of first filter 210 or second filter 220.The first switch 231 and second switch 232 constitute
Switch unit 230 in Fig. 2, and any of which can be 1 × 2 RF switch.
When antenna ANT receives signal of communication, electronic equipment for example selects it to want according to the channel number of signal of communication
It is filtered via first filter 210 or second filter 220, and correspondingly controls first switch 231 and second switch
232 are connected to selected filter.
The work of filter in the second communication mode is described as follows here in conjunction with Fig. 3.When the channel of signal of communication
When number indicating that antenna ANT received signal frequencies are in 2496MHz to 2550MHz, using second switch 232 by antenna ANT
It is switched to the emission port of the duplexer as second filter 220, and duplexer is connected to signal using first switch 231
Transceiver TRx.At this point, the insertion loss of duplexer is, for example, 2.1dB.When the channel number of signal of communication indicates that antenna ANT is connect
When the signal frequency of receipts is in 2550MHz to 2655MHz, antenna ANT is switched to as the second filtering using second switch 232
The receiving port of the duplexer of device 220, and duplexer is connected to signal transceiver TRx using first switch 231.At this point, double
The insertion loss of work device is, for example, 2.0dB.When the channel number of signal of communication indicates that antenna ANT received signal frequencies are in
When 2655MHz to 2690MHz, antenna ANT is switched to as the SAW of first filter 210 filtering using second switch 232
Device, and SAW filter is connected to signal transceiver TRx using first switch 231.At this point, the insertion loss of duplexer is for example
For 2.0dB.When carrying out signal transmission, similar operation can be carried out.
When electronic equipment is in FDD communication patterns, using first switch 231 and second switch 232 by antenna ANT and letter
Number transceiver TRx is connected respectively to the corresponding ports of duplexer, and keeps the connection in entire second communication pattern.
It is described above after the filter according to the embodiment of the present application, any includes above-mentioned transmitting coupling device
Electronic equipment is also in the scope of the disclosure of the present application.
Fig. 5 schematically illustrates the flow chart of the control method for electronic equipment 500 according to the embodiment of the present application.It should
The electronic equipment that control method 500 is applied to may include first filter and second filter, and can operate at use
First communication pattern of the first signal frequency range and the second communication pattern for using second signal frequency range, the first signal frequency range packet
Include the overlapped frequency bands Chong Die with the frequency in second signal frequency range.
As an example, the first communication pattern can be TDD communication patterns, the second communication pattern can be FDD communication patterns,
First filter can be SAW filter, and second filter is duplexer, the first signal frequency range be ranging from from 2496MHz to
The frequency range of 2690MHz, second signal frequency range are the frequencies ranging from from 2496MHz to 2570MHz and from 2620MHz to 2690MHz
Section, as illustrated in figure 3.Overlapped frequency bands between first signal frequency range and second signal frequency range be from 2496MHz to
2570MHz and the frequency range from 2620MHz to 2690MHz.
The SAW filter can be used for being filtered to travelling to and fro between the signal between the TDD transceivers and TDD antennas.?
In traditional technical solution, the bandwidth of the SAW filter must cross over entire first signal frequency range, this may cause it to be inserted into damage
Consumption increases or its cost of manufacture increases, this is especially prominent when the first signal frequency range of first filter is more than specific bandwidth.It should
Bandwidth can change according to the technical characteristic of filter, and can change with the manufacturing technology of filter.At this
Apply embodiment technical solution in, the SAW filter in the first signal frequency range in addition to as the overlapped frequency bands
Signal except at least part of specific overlapping frequency range is filtered.The specific overlapping frequency range is the first signal frequency range and second
Part or all of overlapped frequency bands between signal frequency range.That is, the SAW filter as first filter is not required to
Entire first signal frequency range (for example, from 2496MHz to 2690MHz) is filtered, but to entire first signal
The part (for example, 2550MHz to 2655Mhz) other than specific overlapping frequency range in frequency range is filtered.Therefore, reduce
The bandwidth of the SAW filter correspondingly reduces its cost of manufacture and difficulty.Alternatively, the bandwidth of the SAW filter can be with
The low frequency part (such as from 2496MHz to 2620MHz) of entire first signal frequency range, specific overlapping frequency range at this time be from
The frequency range of 2620MHz to 2690MHz or entire first signal frequency range high frequency section (such as from 2570MHz to
2690MHz) specific overlapping frequency range at this time is the frequency range from 2496MHz to 2570MHz.Here SAW filter is only to show
Meaning property, the type and performance of first filter do not constitute the limitation to the embodiment of the present application.
It is filtered as shown in figure 3, the duplexer as the second filter typically has for docking the collection of letters number
Reception frequency range and for the transmitting frequency range that is filtered of transmitting signal, the receptions frequency range not to have to weigh with the transmitting frequency range
It is folded.The transmitting frequency range and the frequency range (for example, 2570MHz to 2620MHz) received between frequency range are protection frequency ranges, neighbouring to prevent
Transmitter and receiver between generate and interfere with each other.The duplexer is used in FDD communication patterns to second signal frequency range
Signal is filtered.Specifically, in the uplink direction, duplexer is filtered the signal of the transmitting frequency range in Fig. 3；?
On downlink direction, duplexer is filtered the signal of the reception frequency range in Fig. 3.When the second communication pattern is not FDD logical
When letter pattern, which can not be duplexer, but the other types of filter for being suitable for the second communication pattern.
The type and performance of the second filter do not constitute the limitation to the embodiment of the present application.
The electronic equipment can also include antenna and transceiver, the first filter and second filter be used for
The signal transmitted between antenna and transceiver is filtered.
As shown in figure 5, the control method 500 may include：Determine the electronic device works in the first communication pattern still
Second communication pattern (S510)；When electronic device works are in the first communication pattern, using first filter to first letter
Signal in number frequency range other than at least part of specific overlapping frequency range as the overlapped frequency bands is filtered, and
The signal of the specific overlapping frequency range is filtered (S520) using the second filter；When electronic device works are in second
When communication pattern, the signal of the second signal frequency range is filtered (S520) using second filter.
In S510, it is determined that the communication pattern of electronic equipment.Typically, it can determine that it is logical when electronic equipment starts
Letter pattern can also redefine whether its communication pattern changes when the communication environment of the electronic equipment changes.Specifically
Determine that the opportunity of communication pattern does not constitute the limitation to the embodiment of the present application.Furthermore, it is possible in conjunction with the characteristics of communication pattern and electricity
The working environment of sub- equipment determines suitable communication pattern, specific to determine that the mode of communication pattern is not constituted to the application yet
The limitation of embodiment.For example, electronic equipment can determine its communication pattern by being communicated with base station.The communication pattern can
Can also be any other communication pattern to be FDD communication patterns, TDD communication patterns, cdma communication pattern.It is set in electronics
During standby use, operated in a kind of same communication pattern of time generally use.Hereinafter, in the first mode of communication for
FDD communication patterns, the second communication pattern are described for TDD communication patterns.
In S520, when electronic device works are in the first communication pattern, using first filter to first signal
Signal in frequency range other than specific overlapping frequency range is filtered, and using the second filter to the specific overlapping
The signal of frequency range is filtered.In the first communication mode, the bandwidth of first filter is reduced, is only used for described first
Signal in signal frequency range other than specific overlapping frequency range is filtered.For the specific overlapping frequency range, need by cutting
Unit 230 is changed to switch over to be filtered with second filter.In traditional technical solution, second filter is to be exclusively used in
Two communication patterns.Then exist due to having overlapped frequency bands between second signal frequency range and the first signal frequency range in the embodiment of the present application
In first communication pattern also signal filtering is carried out using at least part of the overlapped frequency bands in the bandwidth of second filter.Phase
Reduce first filter bandwidth of operation with answering, to reduce the design difficulty and cost of first filter.
When electronic device works are in the first communication pattern, in the letter using second filter to the specific overlapping frequency range
During number being filtered, the spy can be filtered using the reception frequency range and the transmitting frequency range of the duplexer
Determine the reception signal in overlapped frequency bands, can also be filtered using the reception frequency range and the transmitting frequency range of the duplexer
Transmission signal in the specific overlapping frequency range.The filtering performance of the transmitting frequency range of duplexer is typically due to it and receives the mistake of frequency range
Performance is filtered, therefore carries out signal reception using the transmitting frequency range of duplexer in the first communication mode, can usually meet the
The demand of the signal receiving performance of one communication pattern.
In S530, when electronic device works are when the second communication pattern (for example, FDD communication patterns), the second filter is utilized
Wave device is filtered the signal of the second signal frequency range.When the communication pattern of electronic equipment changes, radio frequency can be utilized
The connection shape of switch control first filter and second filter, and realize corresponding filter operation.About, first filter and
Concrete operations of the second filter in the first communication pattern and the second communication pattern may refer to the description for combining Fig. 4 to carry out.
In the technical solution according to the control method of the embodiment of the present application, by the first communication mode using being used for
The filter of second communication pattern carries out signal filtering, can integration land productivity met with the device in electronic equipment it is different
Communication requirement and it ensure that communication performance.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
The structure for the filter of embodiment controlled can refer to the counter structure in aforementioned device embodiment, no longer superfluous herein
It states.
Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, depends on the specific application and design constraint of technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
Scope of the present application.
In several embodiments provided herein, it should be understood that disclosed unit and method, it can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.
The above, the only specific implementation mode of the application, but the protection domain of the application is not limited thereto, it is any
Those familiar with the art can easily think of the change or the replacement in the technical scope that the application discloses, and should all contain
It covers within the protection domain of the application.Therefore, the protection domain of the application shall be subject to the protection scope of the claim.
Claims (12)
1. a kind of filter, it is applied to an electronic equipment, which can operate at the using the first signal frequency range
One communication pattern and the second communication pattern for using second signal frequency range, the first signal frequency range include and second signal frequency range
In frequency overlapping overlapped frequency bands, the filter includes：
First filter, when electronic device works are in the first communication pattern, in the first signal frequency range in addition to as institute
The signal except at least part of specific overlapping frequency range of overlapped frequency bands is stated to be filtered；
Second filter carried out the signal of the second signal frequency range when electronic device works are in the second communication pattern
Filter；
The signal of the specific overlapping frequency range is switched to institute by switch unit when electronic device works are in the first communication pattern
Second filter is stated, to be filtered to the signal of the specific overlapping frequency range using the second filter；
Wherein, first communication pattern is time-division multiplex communication pattern, and the second communication pattern is frequency division multiplex communication pattern.
2. filter according to claim 1, wherein the first signal frequency range is more than bandwidth.
3. filter according to claim 1, wherein the second filter is duplexer, the duplexer have for pair
Receive the reception frequency range that signal is filtered and the transmitting frequency range for being filtered to transmitting signal, the reception frequency range and institute
Transmitting frequency range is stated not to be overlapped.
4. filter according to claim 3, wherein when electronic device works are in the first communication pattern, the switching is single
Member is believed using the reception frequency range and the transmitting frequency range of the duplexer to filter the reception in the specific overlapping frequency range
Number.
5. filter according to claim 3, wherein when electronic device works are in the first communication pattern, the switching is single
Member is believed using the reception frequency range and the transmitting frequency range of the duplexer to filter the transmission in the specific overlapping frequency range
Number.
6. filter according to claim 1, wherein the electronic equipment includes antenna and transceiver, the filter
For being filtered to the signal transmitted between antenna and transceiver.
7. a kind of control method for electronic equipment, which includes first filter and second filter, and energy
Enough work in the first communication pattern using the first signal frequency range and the second communication pattern using second signal frequency range, described the
One signal frequency range includes overlapped frequency bands Chong Die with the frequency in second signal frequency range, and the control method includes：
Determine the electronic device works in the first communication pattern or the second communication pattern；
When electronic device works are in the first communication pattern, using first filter in the first signal frequency range in addition to as
Signal except at least part of specific overlapping frequency range of the overlapped frequency bands is filtered, and is filtered using described second
Device is filtered the signal of the specific overlapping frequency range；
When electronic device works are in the second communication pattern, the signal of the second signal frequency range is carried out using second filter
Filtering；
Wherein, first communication pattern is time-division multiplex communication pattern, and the second communication pattern is frequency division multiplex communication pattern.
8. control method according to claim 7, wherein the first signal frequency range is more than bandwidth.
9. control method according to claim 7, wherein the second filter is duplexer, the duplexer have for pair
Receive the reception frequency range that signal is filtered and the transmitting frequency range for being filtered to transmitting signal, the reception frequency range and institute
Transmitting frequency range is stated not to be overlapped.
10. control method according to claim 9, wherein described to utilize when electronic device works are in the first communication pattern
Two filters to the signal of the specific overlapping frequency range be filtered including：Utilize the reception frequency range of the duplexer and institute
One of state transmitting frequency range to filter the reception signal in the specific overlapping frequency range or send signal.
11. control method according to claim 7, wherein the electronic equipment further includes antenna and transceiver, first filter
Wave device and second filter are for being filtered the signal transmitted between antenna and transceiver.
12. a kind of electronic equipment includes the filter as described in any one of claim 1-6.
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| CN201410495850.3A CN105450250B (en) | 2014-09-24 | 2014-09-24 | Filter, control method and electronic equipment |
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| CN201410495850.3A CN105450250B (en) | 2014-09-24 | 2014-09-24 | Filter, control method and electronic equipment |
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| CN1795617A (en) * | 2003-05-29 | 2006-06-28 | 索尼爱立信移动通讯股份有限公司 | Quad band antenna interface modules including matching network ports |
| CN103780278A (en) * | 2012-10-23 | 2014-05-07 | 英特尔移动通信有限责任公司 | Switched duplexer front end |
| CN104025530A (en) * | 2011-12-29 | 2014-09-03 | 联发科技股份有限公司 | Communications Apparatuses And Methods For Avoiding Interference In Communications Apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7155252B2 (en) * | 2003-10-17 | 2006-12-26 | Nokia Corporation | Mimo and diversity front-end arrangements for multiband multimode communication engines |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1795617A (en) * | 2003-05-29 | 2006-06-28 | 索尼爱立信移动通讯股份有限公司 | Quad band antenna interface modules including matching network ports |
| CN104025530A (en) * | 2011-12-29 | 2014-09-03 | 联发科技股份有限公司 | Communications Apparatuses And Methods For Avoiding Interference In Communications Apparatus |
| CN103780278A (en) * | 2012-10-23 | 2014-05-07 | 英特尔移动通信有限责任公司 | Switched duplexer front end |
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