CN105450250A - Filtering device, control method of electronic device, electronic device - Google Patents
Filtering device, control method of electronic device, electronic device Download PDFInfo
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- CN105450250A CN105450250A CN201410495850.3A CN201410495850A CN105450250A CN 105450250 A CN105450250 A CN 105450250A CN 201410495850 A CN201410495850 A CN 201410495850A CN 105450250 A CN105450250 A CN 105450250A
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Abstract
The present invention provides a filtering device, a control method of an electronic device, an electronic device. The electronic device is able to work in a first communication mode employing a first signal frequency band and a second communication mode employing a second signal frequency band. The first signal frequency band includes an overlapping frequency band overlapped with the frequency of second signal frequency band. The filtering comprises: a first filter configured to filter signals in the first signal frequency band except specific overlapping frequency bands in the first communication mode; a second filter configured to filter signals in the second signal frequency band in the second communication mode; a switching unit configured to switch the signals of the specific overlapping frequency bands to the second filter in the first communication mode to filter the signals of the specific overlapping frequency bands by using the second filter. According to the technical scheme of the embodiment of the present invention, different communication requirements may be satisfied by integrally using the devices in the electronic device, and the communication performances are ensured.
Description
Technical field
The present invention relates to electronic technology field, more specifically, relate to a kind of filter, control method and comprise the electronic equipment of this filter.
Background technology
At present, many electronic equipments can transmit and/or receive data, thus are very easy to the transmission of information and data.Described electronic equipment such as comprises computer, personal digital assistant, mobile communication terminal, audio player etc.The frequency resource of each frequency range is all typically canonicalized the communication carrying out different mode, thus meets communication needs in varied situations.
Along with the increase of communications band number, the number of devices in electronic equipment also increases gradually, and each device performance requirements also improves to avoid influencing each other of different communication frequency range gradually.And in order to improve the capacity of communication, the scope of each communications band is also increasing gradually, and this brings challenge all to the design of electronic equipment.Therefore, device in electronic equipment is expected suitably to arrange to ensure the performance of electronic equipment.
Summary of the invention
The embodiment of the present application provides a kind of filter, control method and comprises the electronic equipment of this filter, and it can meet different communication demand and ensure that communication performance by device in integration land productivity electronic equipment.
First aspect, provide a kind of filter, be applied to an electronic equipment, this electronic equipment can work in the first communication pattern of use first signal frequency range and use the second communication pattern of secondary signal frequency range, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range, described filter can comprise: the first filter, when electronic device works is in the first communication pattern, in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands; Second filter, when electronic device works is in second communication pattern, filters the signal of described secondary signal frequency range; Switch unit, when electronic device works is in the first communication pattern, by the signal switching of described specific overlapping frequency range to described second filter, filters to utilize the signal of described second filter to described specific overlapping frequency range.
In conjunction with first aspect, in a kind of implementation of first aspect, described first signal frequency range can be greater than bandwidth.
In conjunction with first aspect and above-mentioned implementation thereof, in another implementation of first aspect, described second filter can be duplexer, this duplexer has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.
In conjunction with first aspect and above-mentioned implementation thereof, in another implementation of first aspect, when electronic device works is in the first communication pattern, described switch unit can utilize the described reception frequency range of described duplexer and described transmit frequency band to filter the Received signal strength in described specific overlapping frequency range.
In conjunction with first aspect and above-mentioned implementation thereof, in another implementation of first aspect, when electronic device works is in the first communication pattern, described switch unit can utilize the described reception frequency range of described duplexer and described transmit frequency band to filter the transmission signal in described specific overlapping frequency range.
In conjunction with first aspect and above-mentioned implementation thereof, in another implementation of first aspect, described electronic equipment can comprise antenna and transceiver, and the signal that described filter can be used for transmitting between antenna and transceiver filters.
In conjunction with first aspect and above-mentioned implementation thereof, in another implementation of first aspect, described first communication pattern can be time-division multiplex communication pattern, and second communication pattern can be frequency division multiplex communication pattern.
Second aspect, provide a kind of control method for electronic equipment, this electronic equipment comprises the first filter and the second filter, and the first communication pattern of use first signal frequency range can be worked in and use the second communication pattern of secondary signal frequency range, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range, and described control method can comprise: determine that described electronic device works is in the first communication pattern or second communication pattern; When electronic device works is in the first communication pattern, utilize the first filter in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands, and utilize the signal of described second filter to described specific overlapping frequency range to filter; When electronic device works is in second communication pattern, the signal of the second filter to described secondary signal frequency range is utilized to filter.
In conjunction with second aspect, in a kind of implementation of second aspect, described first signal frequency range can be greater than bandwidth.
In conjunction with second aspect and above-mentioned implementation thereof, in another implementation of second aspect, described second filter can be duplexer, this duplexer has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.
In conjunction with second aspect and above-mentioned implementation thereof, in another implementation of second aspect, when electronic device works is in the first communication pattern, describedly utilize the signal of the second filter to described specific overlapping frequency range to carry out filtration to comprise: utilize the described reception frequency range of described duplexer and described transmit frequency band to the Received signal strength filtered in described specific overlapping frequency range or send one of signal.
In conjunction with second aspect and above-mentioned implementation thereof, in another implementation of second aspect, described electronic equipment also can comprise antenna and transceiver, and described first filter and the second filter are used for filtering the signal transmitted between antenna and transceiver.
The third aspect, provides a kind of electronic equipment, comprises filter as above.
In the filter according to the embodiment of the present application, control method with comprise in the technical scheme of electronic equipment of this filter, be used for the filter of second communication pattern carry out signal filtering by utilizing in the first communication mode, different communication requirements can be met and ensure that communication performance by the device in integration land productivity electronic equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present application, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the frequency range distribution of electronic equipment under different communication modes schematically illustrated in the embodiment of the present application;
Fig. 2 is the block diagram of the filter schematically illustrated according to the embodiment of the present application;
Fig. 3 is the working frequency range of the filter schematically illustrated in the filter in Fig. 2;
Fig. 4 is the application example of the filter schematically illustrated according to 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.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is some embodiments of the present application, instead of whole embodiments.
In the present invention, when be described to discrete cell/parts between first module/parts and second unit/parts time, can intervening elements be there is between these discrete cell/parts and first module/parts or second unit/parts, also can not there is intervening elements; When being described to discrete cell/parts and connecting other parts, these discrete cell/parts directly can be connected with other units/components described and not have intervening elements/parts, also directly can not be connected with other units/components described and have intervening elements/parts.
Usually arrange transmitter, receiver and antenna to communicate in electronic equipment.The signal received via antenna is provided to receiver, to obtain the communication data in aerial signal carrying.Transmitter can export the radiofrequency signal wherein carrying the communication data that will send, and this radiofrequency signal is transferred to antenna through described electronic device, and radiate.Described electronic equipment can utilize different communication patterns to communicate usually, to meet different communication requirements.Such as, the communication pattern of electronic equipment includes but not limited to Frequency Division Duplexing (FDD) (FDD, FrequencyDivisionDuplex) communication pattern, time division duplex (TDD, TimeDivisionDuplex) communication pattern, code division multiple access (CDMA, CodeDivisionMultipleAccess) communication pattern etc.In each communication pattern, in order to improve the quality of signal of communication, may needing, filter is set and the signal in communications band is filtered, with the interference of the signal outside filtering communications band.This electronic equipment is such as smart mobile phone, flat computer etc., and it can also be the communication equipment such as base station, relay station.Here, only for described electronic equipment for mobile terminal is described.But the particular type of described electronic equipment does not form the restriction to the embodiment of the present application.
Fig. 1 is the frequency range distribution of electronic equipment under different communication modes schematically illustrated in the embodiment of the present application.This electronic equipment can work in the first communication pattern of use first signal frequency range and use the second communication pattern of secondary signal frequency range.
As shown in Figure 1, transverse axis is the frequency f of signal, which illustrates the frequency occupied by different communication patterns.In FIG, electronic equipment uses the first signal frequency range from frequency f 2 to f5 under the first communication pattern, as shown in the twill region in Fig. 1; The secondary signal frequency range of frequency of utilization f1 to f3 and f4 to f6 under second communication pattern, as shown in the net region in Fig. 1.Can find out according to Fig. 1, described first signal frequency range and secondary signal frequency range are overlapping in the frequency range of f2 to f3 and f4 to f5 in frequency.That is, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range.Hereinafter, with FDD communication pattern be the first communication pattern, TDD communication pattern is described for second communication pattern, this is only example.The specific embodiment of the application can be applicable to any two communication patterns with overlapped frequency bands of electronic equipment.The band limits of the first signal frequency range shown in Fig. 1 and secondary signal frequency range is only schematic.Any have two overlapping signal frequency ranges can as the first above-mentioned signal frequency range and secondary signal frequency range.Such as, secondary signal frequency range also may be in the scope of the first signal frequency range completely.
In traditional technical scheme, for the first signal frequency range (such as, frequency f 2 to f5) special filter is set for the first communication pattern, and for secondary signal frequency range (such as, frequency f 1 to f3 and f4 to f6), special filter is set for second communication pattern.But as shown in Figure 1, described first signal frequency range is the frequency range from f1 to f3, its scope is usually very wide.When frequency range is very wide, in order to make the filter being exclusively used in the first communication pattern have good performance, such as, have lower insertion loss, then the cost that this may be caused to be exclusively used in the filter of the first communication pattern increases.Even the situation of both the bandwidth sum performances can not taking into account filter may be there is, thus reduces communication performance.
According in the technical scheme of the embodiment of the present application, utilize the filter being used for second communication pattern to carry out signal filtering in the first communication mode, different communication requirements can be met and ensure that communication performance by the device in integration land productivity electronic equipment.That is, electronic device works in the first communication pattern time, utilize the filter for second communication pattern in electronic equipment to carry out filtering to the part signal in the first signal frequency range under the first communication pattern, thus the design difficulty of the filter for the first communication pattern can be reduced.
Fig. 2 is the block diagram of the filter 200 schematically illustrated according to the embodiment of the present application.This filter 200 can be applicable to an electronic equipment.As shown in Figure 1, this electronic equipment can work in the first communication pattern of use first signal frequency range and use the second communication pattern of secondary signal frequency range, and described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range.
As shown in Figure 2, described filter 200 can comprise: the first filter 210, when electronic device works is in the first communication pattern, in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands; Second filter 220, when electronic device works is in second communication pattern, filters the signal of described secondary signal frequency range; Switch unit 230, when electronic device works is in the first communication pattern, by the signal switching of described specific overlapping frequency range to described second filter, filters to utilize the signal of described second filter to described specific overlapping frequency range.
Hereinafter, be described with the signal frequency range B41 frequency range example that to be scope be from 2496MHz to 2690MHz.Fig. 3 is the working frequency range of the filter schematically illustrated in the filter in Fig. 2.Transverse axis in this Fig. 3 take MHz as the frequency of unit.As shown in Figure 3, be be the frequency range (as shown in the hatched example areas of the bottom in Fig. 3 and black region) from 2496MHz to 2690MHz for the scope of TDD communication pattern for the first signal frequency range of the first communication pattern, the secondary signal frequency range for second communication pattern is the frequency range (as shown in the net region in Fig. 3) from 2496MHz to 2570MHz and from 2620MHz to 2690MHz for the scope of FDD communication pattern.Overlapped frequency bands between first signal frequency range and secondary signal frequency range is the frequency range from 2496MHz to 2570MHz and from 2620MHz to 2690MHz, and namely secondary signal frequency range is in the scope of the first signal frequency range completely.
When electronic device works is in TDD communication pattern, typically use surface acoustic wave (surfaceacousticwave) SAW filter as described first filter 210.In TDD communication pattern, the transmitting and receiving signal of electronic equipment carries out in the different time-gap of same frequency channels, the certain guarantee time is adopted to be separated each other, it does not need the frequency of distributing symmetrical frequency band, and in each channel, can control, change transmission and receive the length ratio of period flexibly.Therefore, when carrying out asymmetric transfer of data, limited Radio Spectrum Resource can be made full use of.This SAW filter can be arranged between the TDD transceiver of TDD communication pattern and TDD antenna, for filtering the signal travelled to and fro between described TDD transceiver and TDD antenna.
In traditional technical scheme, if this SAW filter is designed to cross over whole first signal frequency range, its insertion loss then may be caused to increase, and its cost of manufacture may be caused to increase, this is especially outstanding when the first signal frequency range of the first filter is greater than specific bandwidth.
In the technical scheme of the embodiment of the present application, this SAW filter in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands.This specific overlapping frequency range is part or all of overlapped frequency bands between the first signal frequency range and secondary signal frequency range.In figure 3, this specific overlapping frequency range refers to a part for described overlapped frequency bands, the part namely from 2496MHz to 2550MHz and from 2655MHz to 2690MHz, as shown in the hatched example areas in Fig. 3.That is, this SAW filter as the first filter does not need to whole first signal frequency range (such as, from 2496MHz to 2690MHz) filter, but the part (such as, 2550MHz to 2655Mhz) except specific overlapping frequency range in described whole first signal frequency range is filtered.Therefore, decrease the bandwidth of this SAW filter, correspondingly reduce its cost of manufacture and difficulty.
In figure 3, the bandwidth of SAW filter is shown the mid portion of whole first signal frequency range, but it can also be the other parts of whole first signal frequency range.Such as, the bandwidth of this SAW filter can be the low frequency part of whole first signal frequency range, and such as, from 2496MHz to 2620MHz, specific overlapping frequency range is now the frequency range from 2620MHz to 2690MHz; The bandwidth of this SAW filter can also be the HFS of whole first signal frequency range, and such as, from 2570MHz to 2690MHz, specific overlapping frequency range is now the frequency range from 2496MHz to 2570MHz.
As mentioned above, when the first signal frequency range under the first communication pattern is higher than bandwidth, the design facing challenges of the first filter is especially outstanding, thus reduces design difficulty and the cost of the first filter by application the embodiment of the present application.This bandwidth can change according to the technical characteristic of filter, and can change along with the manufacturing technology of filter.In addition, SAW filter is only schematic, and the type of the first filter and performance do not form the restriction to the embodiment of the present application.
When electronic device works is in FDD communication pattern, typically use duplexer as described second filter 220.This duplexer has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.
In FDD communication pattern, need two independently channel frequencys, a channel is used for transmitting information downwards, and one other channel is used for upwards transmitting information.A protection frequency range is there is, to prevent from producing interference mutually between contiguous transmitter and receiver between two channels.As shown in Figure 3, described 2496MHz to 2570MHz is for the uplink band (i.e. transmit frequency band) from terminal to base station transmission signal, and described 2620MHz to 2690MHz is for from base station to the band downlink of terminal transmission signal (namely receiving frequency range).This FDD communication pattern mode can make full use of the frequency spectrum of up-downgoing when supporting symmetrical service.Duplexer is the typical device in FDD communication pattern, and it is by isolated with Received signal strength for transmitting of electronic equipment, ensures to receive and launch and can normally work simultaneously.In other words, the coupling of faint Received signal strength should be come in by duplexer, again larger transmitting power is fed to antenna and gets on, and complete its function separately both requiring and do not influence each other.
When electronic device works is in FDD communication pattern, the signal of duplexer to described secondary signal frequency range as the second filter 220 filters.Particularly, in the uplink direction, the signal of duplexer to the transmit frequency band in Fig. 3 filters; At downlink side upwards, the signal of duplexer to the reception frequency range in Fig. 3 filters.It should be noted that when second communication pattern is not FDD communication pattern, this second filter 220 can not be duplexer, but the filter being applicable to second communication pattern of other type.The type of this second filter 220 and performance do not form the restriction to the embodiment of the present application.
As mentioned above, in the first communication mode, the first filter 210 is only for filtering the signal in described first signal frequency range except specific overlapping frequency range.For described specific overlapping frequency range, need to carry out switching to utilize the second filter by switch unit 230 and filter.That is, when electronic device works is in the first communication pattern, the signal switching of described specific overlapping frequency range to described second filter, filters to utilize the signal of described second filter to described specific overlapping frequency range by switch unit 230.This switch unit 230 such as can be made up of radio-frequency (RF) switch.
When described second filter 220 is duplexers, when electronic device works is in the first communication pattern, described switch unit 230 utilizes the described reception frequency range of described duplexer and described transmit frequency band to filter the Received signal strength (i.e. down link signal) in described specific overlapping frequency range.This specific overlapping frequency range is such as 2496MHz to 2550MHz in Fig. 3 and 2655MHz to 2690MHz.The filtering performance of the transmit frequency band of duplexer, usually due to the strainability that it receives frequency range, therefore utilizes the transmit frequency band of duplexer to carry out Signal reception in the first communication mode, usually can meet the demand of the signal receiving performance of the first communication pattern.In addition, when electronic device works is in the first communication pattern, described switch unit 230 also utilizes the described reception frequency range of described duplexer and described transmit frequency band to filter the transmission signal (i.e. uplink signal) in described specific overlapping frequency range.
Known according to above description, be different from the first filter in conventional art and the second filter is exclusively used in the first communication pattern and second communication pattern respectively, second filter of the embodiment of the present application can be used for the first communication pattern and second communication MODE, and correspondingly reduce the bandwidth of operation of the first filter, thus reduce design difficulty and the cost of the first filter.
In the technical scheme of the filter according to the embodiment of the present application, be used for the filter of second communication pattern carry out signal filtering by utilizing in the first communication mode, different communication requirements can be met and ensure that communication performance by the device in integration land productivity electronic equipment.
Fig. 4 is the application example of the filter 200 schematically illustrated according to the embodiment of the present application.In the diagram of Fig. 4, electronic equipment uses identical signal transceiver TRx and antenna ANT under TDD communication pattern and FDD communication pattern.Signal transceiver TRx is connected to the first filter 210 or the second filter 220 via the first switch 231.This first switch 231 carries out switching controls signal transceiver TRx to be connected to one of the first filter 210 or second filter 220.First filter 210 or the second filter 220 are connected to antenna ANT via second switch 232.This first switch 231 carries out switching controls antenna ANT to be connected to one of the first filter 210 or second filter 220.Described first switch 231 and second switch 232 constitute the switch unit 230 in Fig. 2, and wherein any one can be the radio-frequency (RF) switch of 1 × 2.
When antenna ANT receives signal of communication, electronic equipment such as selects according to the channel of signal of communication that it will via the first filter 210 or the second filter 220 filters, and correspondingly controls the first switch 231 and second switch 232 is connected to selected filter.
Here composition graphs 3 describes filter work in the second communication mode as follows.When the channel of signal of communication indicate signal frequency that antenna ANT receives be in 2496MHz to 2550MHz time, utilize second switch 232 antenna ANT to be switched to the emission port of the duplexer as the second filter 220, and utilize the first switch 231 that duplexer is connected to signal transceiver TRx.Now, the insertion loss of duplexer is such as 2.1dB.When the channel of signal of communication indicate signal frequency that antenna ANT receives be in 2550MHz to 2655MHz time, utilize second switch 232 antenna ANT to be switched to the receiving port of the duplexer as the second filter 220, and utilize the first switch 231 that duplexer is connected to signal transceiver TRx.Now, the insertion loss of duplexer is such as 2.0dB.When the channel of signal of communication indicate signal frequency that antenna ANT receives be in 2655MHz to 2690MHz time, utilize second switch 232 antenna ANT to be switched to SAW filter as the first filter 210, and utilize the first switch 231 that SAW filter is connected to signal transceiver TRx.Now, the insertion loss of duplexer is such as 2.0dB.When carrying out signal and sending, similar operation can be carried out.
When electronic equipment is in FDD communication pattern, utilizes the first switch 231 and second switch 232 that antenna ANT and signal transceiver TRx are connected respectively to the corresponding ports of duplexer, and keep this connection in whole second communication pattern.
After being described above the filter according to the embodiment of the present application, any electronic equipment comprising above-mentioned transmitting coupling device is also all in the open scope of the application.
Fig. 5 schematically illustrates the flow chart of the control method 500 for electronic equipment according to the embodiment of the present application.The electronic equipment that this control method 500 is applied to can comprise the first filter and the second filter, and can work in the first communication pattern of use first signal frequency range and use the second communication pattern of secondary signal frequency range, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range.
Exemplarily, first communication pattern can be TDD communication pattern, second communication pattern can be FDD communication pattern, first filter can be SAW filter, second filter is duplexer, the first signal frequency range frequency range that to be scope be from 2496MHz to 2690MHz, the secondary signal frequency range frequency range that to be scope be from 2496MHz to 2570MHz and from 2620MHz to 2690MHz, as illustrated in figure 3.Overlapped frequency bands between first signal frequency range and secondary signal frequency range is the frequency range from 2496MHz to 2570MHz and from 2620MHz to 2690MHz.
The signal that this SAW filter can be used for travelling to and fro between described TDD transceiver and TDD antenna filters.In traditional technical scheme, the bandwidth of this SAW filter must cross over whole first signal frequency range, and this may cause its insertion loss to increase or its cost of manufacture increases, and this is especially outstanding when the first signal frequency range of the first filter is greater than specific bandwidth.This bandwidth can change according to the technical characteristic of filter, and can change along with the manufacturing technology of filter.In the technical scheme of the embodiment of the present application, this SAW filter in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands.This specific overlapping frequency range is part or all of overlapped frequency bands between the first signal frequency range and secondary signal frequency range.That is, this SAW filter as the first filter does not need to whole first signal frequency range (such as, from 2496MHz to 2690MHz) filter, but the part (such as, 2550MHz to 2655Mhz) except specific overlapping frequency range in described whole first signal frequency range is filtered.Therefore, decrease the bandwidth of this SAW filter, correspondingly reduce its cost of manufacture and difficulty.Alternatively, the bandwidth of this SAW filter can also be the low frequency part (such as from 2496MHz to 2620MHz) of whole first signal frequency range, specific overlapping frequency range is now the frequency range from 2620MHz to 2690MHz, or HFS (such as from 2570MHz to 2690MHz) the specific overlapping frequency range now of whole first signal frequency range is the frequency range from 2496MHz to 2570MHz.Here SAW filter is only schematic, and the type of the first filter and performance do not form the restriction to the embodiment of the present application.
As shown in Figure 3, the duplexer as described second filter typically has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.This transmit frequency band and the frequency range (such as, 2570MHz to 2620MHz) received between frequency range are protection frequency ranges, to prevent from producing interference mutually between contiguous transmitter and receiver.This duplexer is used for filtering the signal of secondary signal frequency range in FDD communication pattern.Particularly, in the uplink direction, the signal of duplexer to the transmit frequency band in Fig. 3 filters; At downlink side upwards, the signal of duplexer to the reception frequency range in Fig. 3 filters.When second communication pattern is not FDD communication pattern, this second filter can not be duplexer, but the filter being applicable to second communication pattern of other type.The type of this second filter and performance do not form the restriction to the embodiment of the present application.
Described electronic equipment can also comprise antenna and transceiver, and described first filter and the second filter are used for filtering the signal transmitted between antenna and transceiver.
As shown in Figure 5, this control method 500 can comprise: determine that described electronic device works is in the first communication pattern or second communication pattern (S510); When electronic device works is in the first communication pattern, utilize the first filter in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands, and utilize the signal of described second filter to described specific overlapping frequency range to filter (S520); When electronic device works is in second communication pattern, the signal of the second filter to described secondary signal frequency range is utilized to filter (S520).
In S510, determine the communication pattern of electronic equipment.Typically, its communication pattern can be determined when electronic equipment starts, also can redefine its communication pattern when the communication environment of described electronic equipment changes and whether change.Do not form the restriction to the embodiment of the present application the opportunity of concrete determination communication pattern.In addition, can determine suitable communication pattern in conjunction with the operational environment of the feature of communication pattern and electronic equipment, the mode of concrete determination communication pattern does not form the restriction to the embodiment of the present application yet.Such as, electronic equipment is by carrying out communication to determine its communication pattern with base station.Described communication pattern can be FDD communication pattern, TDD communication pattern, cdma communication pattern, also can be other communication pattern any.In the use procedure of electronic equipment, a kind of communication pattern is usually adopted to operate at one time.Hereinafter, be that example is described for FDD communication pattern, second communication pattern are TDD communication patterns in the first mode of communication.
In S520, when electronic device works is in the first communication pattern, utilize the first filter to filter the signal in described first signal frequency range except specific overlapping frequency range, and utilize the signal of described second filter to described specific overlapping frequency range to filter.In the first communication mode, the bandwidth of the first filter is reduced, and it is only for filtering the signal in described first signal frequency range except specific overlapping frequency range.For described specific overlapping frequency range, need to carry out switching by switch unit 230 and come to filter with the second filter.In traditional technical scheme, the second filter is exclusively used in second communication pattern.In the embodiment of the present application, owing to having overlapped frequency bands between secondary signal frequency range and the first signal frequency range, then what also utilize the overlapped frequency bands in the bandwidth of the second filter in the first communication mode carries out signal filtration at least partially.Correspondingly reduce the bandwidth of operation of the first filter, thus reduce design difficulty and the cost of the first filter.
When electronic device works is in the first communication pattern, in the process that the signal utilizing the second filter to described specific overlapping frequency range filters, the described reception frequency range of described duplexer and described transmit frequency band can be utilized to filter the Received signal strength in described specific overlapping frequency range, the described reception frequency range of described duplexer and described transmit frequency band also can be utilized to filter the transmission signal in described specific overlapping frequency range.The filtering performance of the transmit frequency band of duplexer, usually due to the strainability that it receives frequency range, therefore utilizes the transmit frequency band of duplexer to carry out Signal reception in the first communication mode, usually can meet the demand of the signal receiving performance of the first communication pattern.
In S530, when electronic device works is when second communication pattern (such as, FDD communication pattern), the signal of the second filter to described secondary signal frequency range is utilized to filter.When the communication pattern of electronic equipment changes, radio-frequency (RF) switch can be utilized to control the connection shape of the first filter and the second filter, and realize corresponding filter operation.About, the first filter and the concrete operations of the second filter in the first communication pattern and second communication pattern, the description can carried out see composition graphs 4.
In the technical scheme of the control method according to the embodiment of the present application, be used for the filter of second communication pattern carry out signal filtering by utilizing in the first communication mode, different communication requirements can be met and ensure that communication performance by the device in integration land productivity electronic equipment.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the structure of the filter controlled of the embodiment of the method for foregoing description, with reference to the counter structure in aforementioned means embodiment, can not repeat them here.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not think the scope exceeding the application.
In several embodiments that the application provides, should be understood that disclosed unit and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.
The above; be only the embodiment of the application, but the protection range of the application is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the application discloses; change can be expected easily or replace, within the protection range that all should be encompassed in the application.Therefore, the protection range of the application should described be as the criterion with the protection range of claim.
Claims (13)
1. a filter, be applied to an electronic equipment, this electronic equipment can work in the first communication pattern of use first signal frequency range and use the second communication pattern of secondary signal frequency range, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range, and described filter comprises:
First filter, when electronic device works is in the first communication pattern, in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands;
Second filter, when electronic device works is in second communication pattern, filters the signal of described secondary signal frequency range;
Switch unit, when electronic device works is in the first communication pattern, by the signal switching of described specific overlapping frequency range to described second filter, filters to utilize the signal of described second filter to described specific overlapping frequency range.
2. filter according to claim 1, wherein, described first signal frequency range is greater than bandwidth.
3. filter according to claim 1, wherein, described second filter is duplexer, and this duplexer has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.
4. filter according to claim 3, wherein, when electronic device works is in the first communication pattern, described switch unit utilizes the described reception frequency range of described duplexer and described transmit frequency band to filter the Received signal strength in described specific overlapping frequency range.
5. filter according to claim 3, wherein, when electronic device works is in the first communication pattern, described switch unit utilizes the described reception frequency range of described duplexer and described transmit frequency band to filter the transmission signal in described specific overlapping frequency range.
6. filter according to claim 1, wherein, described electronic equipment comprises antenna and transceiver, and described filter is used for filtering the signal transmitted between antenna and transceiver.
7. filter according to claim 1, wherein, described first communication pattern is time-division multiplex communication pattern, and second communication pattern is frequency division multiplex communication pattern.
8. the control method for electronic equipment, this electronic equipment comprises the first filter and the second filter, and the first communication pattern of use first signal frequency range can be worked in and use the second communication pattern of secondary signal frequency range, described first signal frequency range comprises the overlapped frequency bands with the frequency overlap in secondary signal frequency range, and described control method comprises:
Determine that described electronic device works is in the first communication pattern or second communication pattern;
When electronic device works is in the first communication pattern, utilize the first filter in described first signal frequency range except filtering as the signal except the specific overlapping frequency range at least partially of described overlapped frequency bands, and utilize the signal of described second filter to described specific overlapping frequency range to filter;
When electronic device works is in second communication pattern, the signal of the second filter to described secondary signal frequency range is utilized to filter.
9. control method according to claim 8, wherein, described first signal frequency range is greater than bandwidth.
10. control method according to claim 8, wherein, described second filter is duplexer, and this duplexer has for carrying out the reception frequency range of filtering and the transmit frequency band for filtering transmitting to received signal, and described reception frequency range does not have overlapping with described transmit frequency band.
11. control methods according to claim 10, wherein, when electronic device works is in the first communication pattern, describedly utilize the signal of the second filter to described specific overlapping frequency range to carry out filtration to comprise: utilize the described reception frequency range of described duplexer and described transmit frequency band to the Received signal strength filtered in described specific overlapping frequency range or send one of signal.
12. control methods according to claim 8, wherein, described electronic equipment also comprises antenna and transceiver, and described first filter and the second filter are used for filtering the signal transmitted between antenna and transceiver.
13. 1 kinds of electronic equipments, comprise the filter according to any one of claim 1-7.
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| CN114389638A (en) * | 2020-10-19 | 2022-04-22 | Oppo广东移动通信有限公司 | Power amplifier module, control method, terminal and computer storage medium |
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