CN101442838A - System for implementing multi-mode standby terminal by duplexer - Google Patents
System for implementing multi-mode standby terminal by duplexer Download PDFInfo
- Publication number
- CN101442838A CN101442838A CNA2007101936786A CN200710193678A CN101442838A CN 101442838 A CN101442838 A CN 101442838A CN A2007101936786 A CNA2007101936786 A CN A2007101936786A CN 200710193678 A CN200710193678 A CN 200710193678A CN 101442838 A CN101442838 A CN 101442838A
- Authority
- CN
- China
- Prior art keywords
- duplexer
- module
- frequency band
- signal
- band
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a multi-mode terminal device used for starting a simultaneous communication based on multiple wireless networks. The terminal device comprises: a first duplexer connected with a first transceiver which is relative to the first wireless network among multiple wireless networks; and a second duplexer connected with a second transceiver which is relative to the second wireless network among multiple wireless networks. A first antenna is connected with the first duplexer, and a second antenna is connected with the second duplexer; the second antenna is used for receiving a second signal from and sending a second signal to the second transceiver. The first duplexer reduces the interference caused by the receiving and sending of the second signal; while the first duplexer reduces the interference caused by the receiving and sending of the first signal.
Description
The cross reference of related application
The application is relevant with the document No.868955 of the Xuejun Zhang that submits simultaneously " System forImplementing Multi-Modular Standby Terminal using Filters, " by name, and its purport is specifically merged as a reference at this.
Background technology
Along with the growth of requirement for radio communication, the client orders various service more continually, comprises and different overlay areas and the dissimilar corresponding services of wireless network.The client can use the zone of wireless service to be determined by the service provider, and usually based on the geographical position.For example, therefore the client who works in the overlay area and live in another zone may expect to be suitable for the different schemes of each position, will cause when especially all not covering two positions in the ownership overlay area when this commercial service under the situation of " roaming " expense.Similarly, the people who frequently carries out the international tourism may expect that a service satisfies their domestic demands and another service international needs of satisfying them, thereby avoids higher international roaming expense.In addition, do not consider overlay area and roaming charges, even many clients also have a plurality of telephone numbers in same overlay area, one is used for commercial use and another is used for personal use.
Simple solution is to operate two different mobile phones that have different numbers and have the ownership overlay area of separation on needed degree.Yet it is inconvenient and expensive buying a plurality of phones.In addition, keeping two telephone directories and other communication information (for example Short Message Service (SMS) and communication of text messages support) is difficulty and time-consuming.
Therefore, provide the cellular device that is called as two standby terminals, this cellular device can provide the communication of serving and/or can handling based on polytype wireless network for a plurality of telephone numbers.For example, can visit multiple cellular network, for example global system for mobile communications (GSM) and Wideband Code Division Multiple Access (WCDMA) (W-CDMA) communication system such as the mobile radio terminal of cell phone, PDA or laptop computer.For example, this mobile radio terminal can comprise dual user information module (SIM) card and can provide service for two telephone numbers.Therefore two standby terminals make single terminal more effectively to communicate based on a plurality of networks.
Can realize two standby terminals in two ways.At first, can use single chipset to bear two communication tasks, but this is difficult to realize at present available equipment.Secondly, can use two different chipsets (or module) to bear two different communication tasks.Because the GSM chipset is relatively cheap, and because these two modules can be shared public I/O assembly, so this pair chipset solution does not obviously increase the integrated cost of two standby terminals.
Yet this pair chipset solution has many shortcomings.For example, be difficult to coordinate the operation of two standalone modules with Millisecond.Therefore, two standby terminals of operating in time division multiple access (TDMA) environment must be launched at a module and receive at another module simultaneously, and this has caused the significant radio frequency (RF) between the module to disturb.
Fig. 1 has described the bimodulus piece terminal 100 in traditional two standby terminals.Bimodulus piece terminal 100 comprises first module with a RF front end 104 and has second module of the 2nd RF front end 108, each module wherein all comprise can (for example Kuo Zhan GSM (EGSM) frequency band, digital communication system (DCS) frequency band, personal communication service (PCS) frequency band etc.) receive and launch on a plurality of frequency bands traditional GSM transceiver 120,160.In order to illustrate, in two modules, first frequency band to be shown the EGSM frequency band, and second frequency band is shown the DCS frequency band.
Particularly, the receiving filter 120,122 that the first module front end 104 comprises double frequency-band power amplifier 122 and is used for the received signal of two different frequency bands is carried out filtering, double frequency-band power amplifier 122 have and are used for power amplifier 123,124 that transmitting of two different frequency bands amplified.Usually, the interference that prevents from out of band signal of receiving filter 120,122.Whether just at transmitt or receive signal, duplexer 140 optionally links to each other a GSM transceiver 120 by one of emission power amplifier 123,124 or receiving filter 120,122 with antenna 145 according to frequency band and antenna 145.Duplexer 140 can be that hilted broadsword four is thrown (SP4T), and this duplexer arrives individual antenna 145 with combinations of bands, and as emission/reception (T/R) switch at each frequency band.
The use of T/R switch 140 has been guaranteed that the emission on any frequency band occurs in and receive different time places.In other words, the first module front end 104 can not transmit and receive simultaneously, has avoided " sensitivity reduces (desensing) " and " having a mind to disturb (jamming) " of this inside modules thus.Yet T/R switch 140 does not prevent " the sensitivity reduction " that interference caused and " having a mind to disturb " that operation takes place that transmit and receive owing to the second module front end 108.In addition, T/R switch 140 has low the grade to medium isolation requirement, therefore at T/R switch 140 two ends noise leakage may take place, thus caused receiving and transmit between interference.
Similarly, the receiving filter 160,162 that the second module front end 108 comprises double frequency-band power amplifier 160 and is used for the received signal of two different frequency bands is carried out filtering, double frequency-band power amplifier 160 have and are used for power amplifier 163,164 that transmitting of two different frequency bands amplified.Receiving filter 160,162 is used for each frequency band and prevents disturbing intentionally from out of band signal.Duplexer 180 optionally links to each other a GSM transceiver 160 by one of emission amplifier 163,164 or receiving filter 160,162 with antenna 185.Duplexer 180 can be that hilted broadsword four is thrown (SP4T), and this duplexer arrives individual antenna 185 with combinations of bands, and as the T/R switch at each frequency band.As mentioned above, the use of T/R switch 180 has guaranteed that the emission of the second module front end 108 on any frequency band occurs in and receive different time places.
Yet as mentioned above, T/R switch 140 or T/R switch 180 have prevented first module in the two standby terminals 100 and the interference between second module.For example, when the signal of being launched by transmitter (for example the GSM transceiver 120) arrives the receiver of operating simultaneously (for example the GSM transceiver 160) with sufficiently high level in same mobile phone, this signal can be so that this saturation of receiver or have a mind to disturb this receiver, thereby stop this receiver to receive useful information.In addition, receiver produces noise, promptly occurs in the low level signal at random outside the predetermined emission band.When the noise that is produced by handset transmitter (for example the GSM transceiver 120) arrived the receiver of operating simultaneously (for example the GSM transceiver 160) with sufficiently high level in same mobile phone, this noise can reduce the signal to noise ratio of this receiver or make this receiver " sensitivity reduction ".This has reduced the ability that this receiver accurately receives information equally.
Therefore, when comprising a plurality of module in the same mobile phone, for example the emission of second module may with the reception crossover (vice versa) of first module.In this case, signal can be through the necessary assembly of the emission in second module, and arrives the receiver of first module, has caused aforesaid " having a mind to disturb " or " sensitivity reduction " to the receiver of first module thus.
Summary of the invention
According to exemplary embodiment, communication when a kind of multimode terminal equipment has been enabled based on a plurality of wireless network.Described terminal equipment comprises: first duplexer that links to each other with first transceiver, and this first transceiver is corresponding with first wireless network in a plurality of wireless networks; And second duplexer that links to each other with second transceiver, this second transceiver is corresponding with second wireless network in a plurality of wireless networks.This terminal equipment also comprises: first antenna that links to each other with first duplexer, this first antenna are used for receiving first signal and first signal being sent to first transceiver from first transceiver; And second antenna that links to each other with second duplexer, this second antenna is used for receiving binary signal and secondary signal being sent to second transceiver from second transceiver.First duplexer has reduced the interference that reception and transmission caused by secondary signal, and second duplexer has reduced the interference that reception and transmission caused by first signal.
This terminal equipment can also comprise first and second power amplifiers.First power amplifier can be connected between first duplexer and first transceiver, this first power amplifier amplifies first signal that sends from first transceiver, so that transmit on first network.Second power amplifier can be connected between second duplexer and second transceiver, this second power amplifier amplifies the signal that sends from second transceiver, so that transmit on second network.
First duplexer can comprise and be used for first signal that is received from first power amplifier is carried out the emission filter of filtering and is used for receiving filter that first signal that is received from first antenna is carried out filtering.Second duplexer can comprise and is used for receiving filter that the secondary signal that is received from second power amplifier is carried out the emission filter of filtering and is used for the secondary signal that is received from second antenna is carried out filtering.
In first transceiver and second transceiver each can comprise double frequency-band GSM transceiver.First frequency band of each double frequency-band GSM transceiver can be GSM (EGSM) frequency band of expansion, and second frequency band of each double frequency-band GSM transceiver can be digital communication system (DCS) frequency band.First duplexer and each duplexer in second duplexer can comprise respectively and the corresponding a plurality of duplexers that separate of EGSM frequency band and DCS frequency band.
This terminal equipment can comprise first duplexer between a plurality of duplexers that separate that are connected first antenna and first duplexer.This first duplexer is carried out frequency separation so that first antenna can receive and send first signal in EGSM frequency band and the DCS frequency band.This terminal equipment can also comprise a plurality of second duplexers that separate between the duplexer that are connected second antenna and second duplexer.This second duplexer is carried out frequency separation so that second antenna can receive and send the secondary signal in EGSM frequency band and the DCS frequency band.
In addition, this terminal equipment can comprise: be connected the first double frequency-band power amplifier between first duplexer and first transceiver, and be connected the second double frequency-band power amplifier between second duplexer and second transceiver.This first double frequency-band power amplifier amplifies the signal that sends in the EGSM of first transceiver frequency band and DSC frequency band, so that transmit on first network.This second power amplifier amplifies the signal that sends in the EGSM of second transceiver frequency band and DCS frequency band, so that transmit on second network.In the first and second double frequency-band power amplifiers each can comprise first amplifier of the signal that is used for amplifying the EGSM frequency band and be used for amplifying second amplifier of the signal of DCS frequency band.
According to another exemplary embodiment, a kind of pair of standby terminal communicates based at least one time division multiple access (TDMA) wireless network.This terminal comprises first module, and this first module has: first double frequency band transceiver, be used for signal to first frequency band of first module and carry out first duplexer that duplex handles, be used for first antenna of signal that signal to second frequency band of first module carries out second duplexer that duplex handles and is used for launching and receives first and second frequency bands of first module.This terminal also comprises second module, and this second module has: second double frequency band transceiver, be used for signal to first frequency band of second module and carry out the 3rd duplexer that duplex handles, be used for second antenna of signal that signal to second frequency band of second module carries out the 4th duplexer that duplex handles and is used for launching and receives first and second frequency bands of second module.First and second duplexers in first module have reduced by the interference that transmits and receives signal to first module that signal caused from second module.Third and fourth duplexer in second module has reduced by the interference that transmits and receives signal to second module that signal caused from first module.
Each duplexer in first and second duplexers of first module can comprise emission filter and receiving filter.This emission filter is decayed to the noise that is produced in the frequency acceptance band of second module at least, and this receiving filter is decayed to the noise that is produced in the emission band of second module at least.Similarly, each duplexer in third and fourth duplexer of second module all comprises emission filter and receiving filter.This emission filter is decayed to the noise that is produced in the frequency acceptance band of first module at least, and this receiving filter is decayed to the noise that is produced in the emission band of first module at least.
This first module can comprise first homodromy (diplexer) that is used for first and second duplexers and first antenna are carried out interface.In addition, this second module can comprise second homodromy that is used for third and fourth duplexer and second antenna are carried out interface.This first module can also comprise and being used for first frequency band of first module and the first double frequency-band power amplifier that transmits and amplify of second frequency band, and this second module can also comprise and being used for first frequency band of second module and the second double frequency-band power amplifier that transmits and amplify in second frequency band.First frequency band in each module in first and second modules can be the EGSM frequency band, and second frequency band in each module in first and second modules can be the DCS frequency band.
At least one TDMA wireless network can comprise and corresponding first network of first module and second network corresponding with second module, that be independent of first network.In addition, at least one TDMA wireless network can comprise the GSM network, and first module is corresponding with first telephone number of GSM network, and second module is corresponding with second telephone number of GSM network.
According to another exemplary embodiment, a kind of pair of standby terminal communicates based on a plurality of time division multiple accesses (TDMA) wireless network.This terminal comprises first module, and this first module comprises: double frequency band transceiver, be used for the reception of first frequency band and transmit carrying out first duplexer that duplex handles, being used for first antenna of signal that the received signal of second frequency band is carried out filter filtering, is used for the double frequency-band power amplifier that transmitting of first frequency band and second frequency band amplified and is used for transmitting first and second frequency bands of first module.The transmit/receive switch of first module is optionally with the reception in first frequency band with transmit and be connected to first duplexer, the received signal in second frequency band is connected to filter and transmitting in second frequency band is connected to the double frequency-band power amplifier.This terminal also comprises second module, and this second module comprises: transceiver, be used for the reception of first frequency band and transmit carrying out second duplexer that duplex handles, second antenna that is used for the power amplifier that transmitting of first frequency band amplified and is used for only transmitting the signal of first frequency band.The intermodule that first and second duplexers have reduced in first frequency band disturbs.
First frequency band can be the EGSM frequency band, and second frequency band can be the DCS frequency band.In addition, first duplexer can comprise and be used for the receiving filter and the emission filter of decaying to from the noise of first frequency band of second module, and second duplexer can comprise and is used for the receiving filter and the emission filter of decaying to from the noise of first frequency band of first module.
Description of drawings
From the following detailed description of understanding in conjunction with the accompanying drawings, will understand exemplary embodiments best.Be stressed that and describe each feature in proportion.In fact, for discuss clear for the purpose of, can increase and reduce size arbitrarily.Any applicable and can realize part, similar Reference numeral is represented similar element.
Fig. 1 shows the block diagram of the traditional two standby terminals with two double frequency-band gsm modules;
Fig. 2 shows the block diagram according to the two standby terminals with two multiband modules of exemplary embodiments;
Fig. 3 shows the block diagram according to two standby terminals of another exemplary embodiments;
Fig. 4 shows the block diagram according to two standby terminals of another exemplary embodiments;
Fig. 5 shows the block diagram according to two standby terminals of another exemplary embodiments.
Embodiment
In following detailed description, for explanation non-limiting, specific detail has been proposed to provide to complete understanding according to the exemplary embodiment of this benefit gained from others' wisdom.Yet, for those skilled in the art of known rights and interests of the present disclosure and, speech it is evident that, with specific detail disclosed herein deviate from mutually according to other embodiment of this benefit gained from others' wisdom still within the scope of appended claim.In addition, can omit description, in order to avoid make description ambiguous to exemplary embodiment to device known to those skilled in the art, equipment, material and method.This device, equipment, material and method are clearly within the scope of this benefit gained from others' wisdom.
Fig. 2 shows the block diagram according to the two standby terminals 200 with a plurality of transceiver modules of exemplary embodiments.For example, this pair standby terminal 200 can be the TDMA Wireless Telecom Equipment of operating in gsm communication system.
This pair standby terminal 200 comprises two modules: modules A and module B, each module wherein all operates in a plurality of frequency bands, for example in the multiband gsm system.For example, modules A has base band 202 and the RF front end 204 that transmits the IQ symbol by corresponding I and Q channel.Though can merge according to the different-format of modulation scheme the information that will launch/receive, the IQ symbolic representation from/to the digital speech and/or the data of the application program of operation on terminal 200.For example, module B has base band 206 and the RF front end 208 that similarly transmits the IQ symbol by corresponding I and Q channel.The base band 202 of modules A and the base band 206 of module B can co-operations, and can be respectively by AT order each application program interfaces with RF front end 204,208 and Wireless Telecom Equipment.
The RF front end 204 of modules A comprises multiband transceiver 220, and the RF front end 208 of module B comprises multiband transceiver 260, and for example, modules A can be operated and two corresponding GSM transceivers of different services simultaneously with module B.Alternatively, modules A and module B can be associated with same wireless network and/or network service, but realize that discretely modules A provides service with module B so that for different telephone numbers.In addition, in order to illustrate, each that shows in multiband transceiver 220 and 260 all comprises EGSM first frequency band and DCS second frequency band.Yet should be appreciated that can be under the prerequisite of the spirit and scope that do not deviate from each embodiment, and the frequency band of varying number and type is merged.
Similarly, the RF front end 208 of module B comprises antenna 285, homodromy 280, duplexer 265 and double frequency-band power amplifier 262.Duplexer 265 comprises and corresponding EGSM duplexer 266 of a plurality of frequency bands of module B and DCS duplexer 270.Similarly, double frequency-band power amplifier 262 comprises and is used for transmit first amplifier 263 that amplifies and be used for second amplifier 264 that DCS is transmitted and amplifies to EGSM.EGSM duplexer 266 comprises receiving filter 267 and emission filter 268, and the DCS duplexer comprises receiving filter 277 and emission filter 278.Usually, duplexer 265 makes that signal antenna 285 can be as at each reception antenna and the transmitting antenna in a plurality of frequency bands (for example EGSM and DCS signal).280 pairs of signals of homodromy separate so that antenna 285 can be shared more than a frequency band.
The RF front end 204 of referrer module A, according to frequency band, amplify by one of EGSM first amplifier 223 of double frequency-band power amplifier 222 or DCS first amplifier 224 from transmitting of transceiver 220, and through one of EGSM duplexer 226 or DCS duplexer 236.Then, homodromy 234 provides to antenna 245 and transmits in order to emission.According to frequency band, received signal arrives transceiver 220 through antenna 245, homodromy 234 and one of EGSM duplexer 226 or DCS duplexer 236.
The duplexer (for example T/R switch) that uses duplexer 226,236 to replace in the legacy system, for example the T/R switch 140 or 180 among Fig. 1.The RF that duplexer 226,236 has reduced intermodule (for example between the transceiver 260 of the transceiver 220 of modules A and module B) disturbs (for example " having a mind to disturb " and " sensitivity reduction ").As mentioned above, duplexer 226,236 comprises receiving filter 227,237 and emission filter 228,238 respectively.Receiving filter 227,237 lay respectively at antenna 245 and and EGSM and DCS band signal path in each corresponding low noise amplifier (LPA) (not shown) between.EGSM and DCS band signal that receiving filter 227,237 receives with the minimal attenuation transmission respectively, but high decay provided for the signal that in emission band, is produced, for example in order to prevent " having a mind to disturb ".Emission filter 228,238 lay respectively at antenna 245 and and EGSM and the corresponding double frequency-band power amplifier 222 of DCS band signal path in power amplifier 223,224 between.EGSM and DCS band signal that emission filter 228,238 is launched with the minimal attenuation transmission respectively, but high decay provided for the signal that in frequency acceptance band, is produced, for example in order to prevent " sensitivity reduction ".
The function of the module B function with modules A in fact is identical, comprises the configuration and the operation of duplexer 266,276.Therefore, about module B, with the explanation that no longer repeats this function.In addition, should be appreciated that under the prerequisite of the spirit and scope that do not deviate from each embodiment, can comprise attached module in the terminal that each add-on module wherein in fact all comprises configuration and the function identical with modules A and B, disturb to reduce intermodule.
According to exemplary embodiments, module B can transmit and receive signal with modules A and side by side transmit and receive signal on these same frequency bands on EGSM and DCS frequency band, and is not subjected to the negative influence that intermodule disturbs.For example, when modules A is just transmitting in received signal and with the module B in a pair of standby terminal 200, overcome the influence that emission is disturbed, vice versa.In addition, because for the RF that overcomes intermodule disturbs, each module all uses duplexer to replace T/R switch in traditional GSM terminal, and this realization is simple relatively.With duplexer be used to prevent from the transmitter of another module have a mind to disturb and the sensitivity reduction.In addition, be used for the EGSM of each module and the community antenna of DCS frequency band, comprised additional frequency separator (for example homodromy 240,280) in order to share.
Fig. 3 shows the block diagram according to the two standby terminals 300 with a plurality of transceiver modules of another exemplary embodiments.
Two standby terminals 300 among Fig. 3 comprise two modules: modules A and module B.Different with the two standby terminals 200 among Fig. 2, the module B among Fig. 3 is not the dual-band module such as the multiband gsm system.In this configuration, only modules A comprises the DCS frequency band, therefore will reduce the interference that is associated with the DCS frequency band.In addition, because modules A or module B do not comprise DCS frequency band duplexer, therefore can avoid handling the realization difficult point that broadband DCS (for example 75MHz) is associated with duplexer usually.In addition, owing to the duplexer that needs still less, the configuration of two standby terminals 300 is simpler and cost is lower.
Particularly, because modules A and module B only transmit and receive the EGSM band signal (promptly, module B is not transmitting and receiving the DCS band signal), the RF front end 304 of modules A only needs a duplexer (duplexer 326) that is used for the EGSM band signal, and the RF front end 308 of module B equally only needs a duplexer (duplexer 366) that is used for the EGSM band signal.In addition, in described embodiment, because modules A is by T/R switch 339 and antenna 345 interfaces, and module B only carries out interface by 366 pairs of EGSM band signals of duplexer and antenna 385, so RF front end 304 or RF front end 308 do not need homodromy.
With reference to the RF front end 304 of modules A,, come amplifying from transmitting of transceiver 320 by one of EGSM first amplifier 323 of double frequency-band power amplifier 322 or DCS second amplifier 324 according to frequency band.Then, the EGSM band signal is through 326 (comprising emission filter 328) of EGSM duplexer, and arrival can be the duplexer 339 of T/R switch.Yet, under the situation of duplexer, the DCS band signal is being sent to switch 339.Switch 339 optionally is connected to antenna 345 with one of EGSM band signal or DCS band signal, so that transmit on wireless network.
The signal that antenna 345 is received is passed to switch 339.When received signal was the EGSM band signal, switch 339 linked to each other with EGSM duplexer 326.The EGSM band signal is through EGSM duplexer arrival 326 (comprising receiving filter 327) transceiver 320 then.When this signal was the DCS band signal, switch 339 linked to each other with the filter that separates (filter 382), and under the situation of duplexer this DCS band signal is being passed to transceiver 320 by filter 382.
On the contrary,, amplify, and arrive antenna 385 366 (comprising emission filter 368) through the EGSM duplexer from the EGSM band transmission signal of transceiver 360 EGSM amplifier 363 by power amplifier 362 with reference to the RF front end 308 of module B.The EGSM frequency band received signal that antenna 345 is received is through EGSM duplexer arrival 366 (comprising receiving filter 367) transceiver 360.As mentioned above, RF front end 308 does not receive or launches the DCS signal.Therefore, need be such as the duplexer the T/R switch.Transmit and receive function by 366 execution of EGSM duplexer, so that module B is effective as the single band module.
Fig. 4 shows the block diagram according to the two standby terminals 400 with a plurality of transceiver modules of another exemplary embodiments.
Two standby terminals 400 among Fig. 4 comprise two modules: modules A and module B.Similar to two standby terminal 300, the module B among Fig. 4 does not comprise the DCS frequency band, complicated about at the duplexer of the wide bandwidth of DCS band signal that has therefore avoided occurring.Only modules A comprises the DCS frequency band, will reduce the interference that is associated with the DCS frequency band thus.
Yet the RF front end 404 in the modules A comprises the additional antenna (antenna 446) of the DCS frequency band that is exclusively used in modules A.The merging of antenna 446 has reduced the insertion loss of the EGSM band signal in the modules A.Antenna 445 receives and launches the EGSM band signal of modules A via the receiving filter 427 and the emission filter 428 of duplexer 426 respectively.Discuss about duplexer 326 and 366 as above-mentioned, the intermodule that has reduced between the EGSM band signal of modules A and module B disturbs.
Fig. 5 shows the block diagram according to the two standby terminals 500 with a plurality of transceiver modules of another exemplary embodiments.For example, this pair standby terminal 500 can be the TDMA Wireless Telecom Equipment of operating in gsm communication system.
Discuss as above-mentioned, two standby terminals 500 comprise two modules: modules A and module B, each module wherein all operates in a plurality of frequency bands, for example in the multiband gsm system.For example, modules A has base band 202 and the RF front end 504 that transmits the IQ symbol by corresponding I and Q channel, and module B has base band 206 and the RF front end 508 that similarly transmits the IQ symbol by corresponding I and Q channel.The base band 202 of modules A and the base band 206 of module B can co-operations, and can carry out interface by the AT order to each application of RF front end 204,208 and Wireless Telecom Equipment respectively.
The RF front end 504 of modules A comprises multiband transceiver 520, the RF front end 508 of module B comprises multiband transceiver 560, for example, modules A can be operated and two corresponding GSM transceivers of different services simultaneously with module B, perhaps modules A and module B can be associated with same wireless network and/or network service, provide service but implement modules A discretely with module B so that for different telephone numbers.In addition, in order to illustrate, each that shows in multiband transceiver 520 and 560 all comprises EGSM first frequency band and DCS second frequency band.Yet should be appreciated that can be under the prerequisite of the spirit and scope that do not deviate from each embodiment, and the frequency band of varying number and type is merged.
RF front end 504 also comprises antenna 545, duplexer 539 and double frequency-band power amplifier 522.Double frequency-band power amplifier 522 comprises and is used for transmit first amplifier 523 that amplifies and be used for second amplifier 524 that DCS is transmitted and amplifies to EGSM.Duplexer 539 can be the SP4T switch, as the T/R switch at each frequency band.
Switch 539 optionally is connected to antenna 545 with EGSM band signal and DCS band signal, so that communicate on wireless network.For example, the EGSM band transmission signal that switch 539 will be received from first amplifier 523 and EGSM power amplifier emission filter 528 is connected to antenna 545, and the DCS band transmission signal that will be received from second amplifier 524 and DCS power amplifier emission filter 538 is connected to antenna 545.The received signal that antenna 545 is received is passed to switch 539, and switch 539 is connected to EGSM receiving filter 527 with EGSM frequency band received signal, and DCS frequency band received signal is connected to DCS receiving filter 537.
EGSM emission filter 528 and DCS emission filter 538 are the filters that add, and the part of non-traditional systems.Typically, although can comprise embedded LC (inductor/capacitor) filter in the emission path of T/R switch, this filter has reduced Harmonic Interference (for example second and third harmonic).On the contrary, according to described embodiment, the interference signal that emission filter 528,538 has reduced in the corresponding frequency acceptance band, for example shot noise leaks.In other words, EGSM emission filter 528 has reduced the noise leakage in the EGSM frequency acceptance band, and DCS emission filter 538 has reduced the noise leakage in the DCS frequency acceptance band.Although accurate attenuation requirement can change according to physics realization, for example each in the emission filter 528,538 can cause the decay of the 5dB at least in the corresponding frequency acceptance band.
Similarly, EGSM receiving filter 527 and DCS receiving filter 537 can have than the attenuation requirement in the higher emission band of the receiving filter in the legacy system.For example, each receiving filter in the receiving filter 527,537 can cause the decay of the 20dB at least in the corresponding emission band.Yet the accurate attenuation requirement of EGSM receiving filter 527 and DCS receiving filter 537 can change according to physics realization.
Similarly, the RF front end 508 of module B also comprises antenna 585, duplexer 579 and double frequency-band power amplifier 562, and double frequency-band power amplifier 562 comprises and is used for transmit first amplifier 563 that amplifies and be used for second amplifier 564 that DCS is transmitted and amplifies to EGSM.Switch 579 can be the SP45 switch, as the T/R switch at each frequency band.
Switch 579 optionally is connected to antenna 585 with EGSM band signal and DCS band signal, so that communicate in wireless network.For example, the EGSM band transmission signal that switch 579 will be received from first amplifier 563 and EGSM power amplifier emission filter 568 is connected to antenna 545, and the DCS band transmission signal that will be received from second amplifier 564 and DCS power amplifier emission filter 578 is connected to antenna 585.The received signal that antenna 585 is received is passed to switch 579, and switch 579 is connected to EGSM receiving filter 567 with EGSM frequency band received signal, and DCS frequency band received signal is connected to DCS receiving filter 577.
Discuss about EGSM emission filter 528 and DCS emission filter 538 as above-mentioned, EGSM emission filter 568 and DCS emission filter 578 are respectively additional filter, and the part of non-traditional systems.Similarly, discuss about EGSM emission filter 527 and DCS emission filter 537 as above-mentioned, EGSM receiving filter 567 and DCS receiving filter 577 can have respectively than the attenuation requirement in the higher emission band of traditional receiving filter.Therefore, no longer repeat description to these elements.
For example, in an embodiment, can use the emission filter 428 of the duplexer 426 among Fig. 4 to realize EGSM emission filter 528 by receiving filter 427 ground connection with duplexer 426.Similarly, can use the receiving filter 427 of duplexer 426 to realize EGSM receiving filter 527 by with emission filter 428 ground connection.Similarly, in each embodiment, can use the duplexer of its corresponding receiving filter ground connection to realize emission filter 538,568 and 578, can use the duplexer of its corresponding emission filter ground connection to realize receiving filter 537,567 and 577.
In addition, in an embodiment, module B is not the multiband module.For example, as discussed with respect to FIG. 3, RF front end 508 can not comprise the DCS frequency band, does not need to comprise DCS emission filter 538,578 in this case.
RF front end 504 with reference to modules A, according to frequency band, amplify by one of the EGSM amplifier 523 of double frequency-band power amplifier 522 or DCS amplifier 524 from transmitting of transceiver 520, and through one of EGSM emission filter 528 or DCS emission filter 538.Switch 539 links to each other with suitable emission filter 528 or 538 then, and provides to antenna 545 and to transmit in order to emission.According to frequency band, received signal arrives transceiver 520 through antenna 545, switch 539 and one of EGSM receiving filter 527 or DCS receiving filter 537.For example, EGSM and DCS band signal that receiving filter 527,537 is received with the minimal attenuation transmission respectively, but provide high decay for the signal that in emission band, is produced, to prevent " having a mind to disturb ".For example, EGSM and DCS band signal that emission filter 528,538 uses the minimal attenuation transmission to be launched respectively, but provide high decay for the signal that in frequency acceptance band, is produced, to prevent " sensitivity reduction ".
The function of the module B function with modules A in fact is identical, comprises the configuration and the operation of receiving filter 567,577 and emission filter 568,578.Therefore, about module B, no longer repeat explanation to this function.In addition, should be appreciated that in the terminal to comprise add-on module that each module wherein in fact all comprises configuration and the function identical with modules A and B, disturb that this does not deviate from the spirit and scope of each embodiment to reduce intermodule.According to exemplary embodiments, module B can transmit and receive signal with modules A and side by side transmit and receive signal on these same frequency bands on EGSM and DCS frequency band, and is not subjected to the negative influence that intermodule disturbs.
Therefore, have at least one independently antenna by the merging of duplexer in each module and/or filter and at each module, the intermodule that has reduced in the multi-mode standby TDMA terminal disturbs.In each embodiment, duplexer can replace at least one antenna (T/R) switch in the legacy system.
About exemplary embodiment, described and had a plurality of two standby terminals with module of duplexer.It will be understood by those of skill in the art that many variations that may exist, and these change still within the scope of appended claim according to this benefit gained from others' wisdom.After inspection specification, accompanying drawing and claim here, the variation of these and other becomes apparent for a person skilled in the art.Therefore the present invention only is restricted within the spirit and scope of appended claim.
Claims (20)
1. multimode terminal equipment that is used to enable based on a plurality of wireless network time communication, described terminal equipment comprises:
First duplexer that links to each other with first transceiver, described first transceiver is corresponding with first wireless network in a plurality of wireless networks;
Second duplexer that links to each other with second transceiver, described second duplexer is corresponding with second wireless network in a plurality of wireless networks;
First antenna that links to each other with first duplexer, described first antenna are used for receiving first signal and sending first signal to described first transceiver from described first transceiver; And
Second antenna that links to each other with second duplexer, described second antenna are used for receiving secondary signal and sending secondary signal to described second transceiver from described second transceiver,
Wherein, described first duplexer has reduced the interference that reception and transmission caused by described secondary signal, and described second duplexer has reduced the interference that reception and transmission caused by described first signal.
2. terminal equipment according to claim 1 also comprises:
Be connected first power amplifier between described first duplexer and described first transceiver, described first power amplifier amplifies first signal that sends from described first transceiver, so that transmit at described first network; And
Be connected second power amplifier between described second duplexer and described second transceiver, described second power amplifier amplifies from the secondary signal of second transceiver sending, so that transmit at described second network.
3. terminal equipment according to claim 2, wherein, described first duplexer comprises and is used for first signal that is received from first power amplifier is carried out the emission filter of filtering and is used for receiving filter that first signal that is received from described first antenna is carried out filtering, and described second duplexer comprises and is used for receiving filter that the secondary signal that is received from second power amplifier is carried out the emission filter of filtering and is used for the secondary signal that is received from described second antenna is carried out filtering.
4. terminal equipment according to claim 1, wherein, each in described first transceiver and second transceiver all comprises double frequency-band GSM transceiver.
5. terminal equipment according to claim 4, wherein, first frequency band of each double frequency-band GSM transceiver comprises GSM (EGSM) frequency band of expansion, and second frequency band of each double frequency-band GSM transceiver comprises digital communication system (DCS) frequency band.
6. terminal equipment according to claim 5, wherein, described first duplexer and each duplexer in second duplexer all comprise respectively and the corresponding a plurality of duplexers that separate of EGSM frequency band and DCS frequency band.
7. terminal equipment according to claim 6 also comprises:
Be connected a plurality of first duplexers that separate between the duplexer of described first antenna and first duplexer, described first duplexer is carried out frequency separation so that first antenna can receive and send first signal in EGSM frequency band and the DCS frequency band; And
Be connected a plurality of second duplexers that separate between the duplexer of described second antenna and second duplexer, described second duplexer is carried out frequency separation so that second antenna can receive and send the secondary signal in EGSM frequency band and the DCS frequency band.
8. terminal equipment according to claim 6 also comprises:
Be connected the first double frequency-band power amplifier between described first duplexer and first transceiver, the described first double frequency-band power amplifier amplifies the signal that sends in the EGSM of first transceiver frequency band and DSC frequency band, so that transmit at described first network; And
Be connected the second double frequency-band power amplifier between described second duplexer and second transceiver, described second power amplifier amplifies the signal that sends in the EGSM of described second transceiver frequency band and DCS frequency band, so that transmit at described second network.
9. terminal equipment according to claim 8, wherein, each the double frequency-band power amplifier in the described first and second double frequency-band power amplifiers all comprises and is used for first amplifier that the signal to the EGSM frequency band amplifies and is used for second amplifier that the signal to the DCS frequency band amplifies.
10. one kind is used for two standby terminals of communicating based at least one time division multiple access (TDMA) wireless network, and described terminal comprises:
First module comprises: first double frequency band transceiver, be used for the signal in first frequency band of described first module is carried out first duplexer that duplex handles, is used for first antenna that the signal in second frequency band of described first module is carried out second duplexer that duplex handles and is used for launching and receives the signal in first and second frequency bands of described first module; And
Second module, comprise: second double frequency band transceiver, be used for the signal in first frequency band of described second module is carried out the 3rd duplexer that duplex handles, is used for second antenna that the signal in second frequency band of described second module is carried out the 4th duplexer that duplex handles and is used for launching and receives the signal in first and second frequency bands of described second module
Wherein, first and second duplexers in described first module have reduced by the interference that transmits and receives signal to first module that signal caused from second module, and third and fourth duplexer in described second module has reduced by the interference that transmits and receives signal to second module that signal caused from first module.
11. according to claim 10 pair of standby terminal, wherein, each duplexer in first and second duplexers of described first module all comprises emission filter and receiving filter, described emission filter is decayed to the noise that is produced in the frequency acceptance band of second module at least, and described receiving filter is decayed to the noise that is produced in the emission band of second module at least.
12. according to claim 11 pair of standby terminal, wherein, each duplexer in third and fourth duplexer of described second module all comprises emission filter and receiving filter, described emission filter is decayed to the noise that is produced in the frequency acceptance band of first module at least, and described receiving filter is decayed to the noise that is produced in the emission band of first module at least.
13. according to claim 10 pair of standby terminal, wherein said first module also comprises first homodromy that is used for described first and second duplexers and described first antenna are carried out interface, and described second module also comprises second homodromy that is used for described third and fourth duplexer and described second antenna are carried out interface.
14. according to claim 13 pair of standby terminal, wherein said first module also comprises and being used for first frequency band of first module and the first double frequency-band power amplifier that transmits and amplify in second frequency band, and described second module also comprises and being used for first frequency band of second module and the second double frequency-band power amplifier that transmits and amplify in second frequency band.
15. according to claim 14 pair of standby terminal, wherein, first frequency band in each module in described first and second modules comprises GSM (EGSM) frequency band of expansion, and second frequency band in each module in described first and second modules comprises digital communication system (DCS) frequency band.
16. according to claim 10 pair of standby terminal, wherein, described at least one TDMA wireless network comprises and corresponding first network of described first module and corresponding, that be independent of described first network second network with described second module.
17. according to claim 10 pair of standby terminal, wherein, described at least one TDMA wireless network comprises the GSM network, and described first module is corresponding with first telephone number of described GSM network, and described second module is corresponding with second telephone number of described GSM network.
18. one kind is used for two standby terminals of communicating based on a plurality of time division multiple accesses (TDMA) wireless network, described terminal comprises:
First module comprises: double frequency band transceiver, be used for the reception of first frequency band and transmit carrying out first duplexer that duplex is handled, be used for the received signal of second frequency band is carried out filter filtering, be used for double frequency-band power amplifier that transmitting of first frequency band and second frequency band amplified, be used for transmitting first antenna of signal of first and second frequency bands of described first module, and be used for optionally the reception of first frequency band and transmit being connected to first duplexer, the transmit/receive switch that received signal in second frequency band is connected to filter and transmitting in second frequency band is connected to the double frequency-band power amplifier; And
Second module, comprise: transceiver, be used for the reception of first frequency band and transmit carrying out second duplexer that duplex handles, second antenna that is used for the power amplifier that transmitting of first frequency band amplified and is used for only transmitting the signal of first frequency band
Wherein, described first and second duplexers have reduced the intermodule interference in first frequency band.
19. according to claim 18 pair of standby terminal, wherein, described first frequency band comprises GSM (EGSM) frequency band of expansion, and described second frequency band comprises digital communication system (DCS) frequency band.
20. according to claim 18 pair of standby terminal, wherein, described first duplexer comprises and is used for the receiving filter and the emission filter of decaying to from the noise of first frequency band of second module, and described second duplexer comprises and is used for the receiving filter and the emission filter of decaying to from the noise of first frequency band of first module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101936786A CN101442838A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by duplexer |
| PCT/IB2008/054683 WO2009066199A2 (en) | 2007-11-23 | 2008-11-08 | System for implementing multi-modular standby terminal using duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101936786A CN101442838A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by duplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101442838A true CN101442838A (en) | 2009-05-27 |
Family
ID=40589630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101936786A Pending CN101442838A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by duplexer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101442838A (en) |
| WO (1) | WO2009066199A2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904624A (en) * | 2011-07-28 | 2013-01-30 | Lg电子株式会社 | Mobile terminal |
| CN105098356A (en) * | 2015-09-09 | 2015-11-25 | 天津七一二通信广播有限公司 | Ultraviolet (UV) frequency band and S frequency band dual-mode integrated antenna system applied to communication terminal |
| CN105163390A (en) * | 2008-09-12 | 2015-12-16 | 高通股份有限公司 | Interference management for different wireless communication technologies |
| CN105376040A (en) * | 2014-08-13 | 2016-03-02 | 天工方案公司 | Radio-frequency front-end architecture for carrier aggregation of cellular bands |
| CN105827252A (en) * | 2015-01-28 | 2016-08-03 | 三星电子株式会社 | Method for reducing interference and electronic device thereof |
| CN106067828A (en) * | 2016-05-23 | 2016-11-02 | 广东欧珀移动通信有限公司 | Anti-harmonic wave countermeasure set, antenna assembly and the mobile terminal of a kind of carrier aggregation |
| CN106452471A (en) * | 2016-09-29 | 2017-02-22 | 宇龙计算机通信科技(深圳)有限公司 | GSM radio frequency circuit and terminal comprising circuit |
| CN107231167A (en) * | 2016-03-24 | 2017-10-03 | 北京小米移动软件有限公司 | The electronic equipment of radio circuit |
| CN107251444A (en) * | 2015-02-23 | 2017-10-13 | 高通股份有限公司 | Transceiver arrangement for millimeter wave radio communication |
| CN107534451A (en) * | 2015-05-11 | 2018-01-02 | 追踪有限公司 | Radio circuit and the front-end circuit with radio circuit |
| CN108390679A (en) * | 2018-02-26 | 2018-08-10 | 广东小天才科技有限公司 | Communication means based on multiple antennas radio-frequency front-end and multiple antennas RF front-end circuit |
| CN109831223A (en) * | 2019-03-21 | 2019-05-31 | Oppo广东移动通信有限公司 | Antenna multiplexed radio-frequency unit and terminal |
| CN112954745A (en) * | 2019-12-10 | 2021-06-11 | 成都鼎桥通信技术有限公司 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425850B2 (en) * | 2010-10-27 | 2016-08-23 | Sai C. Kwok | Simultaneous voice and data communication |
| CN103516379A (en) * | 2012-06-28 | 2014-01-15 | 国基电子（上海）有限公司 | Wireless communication module |
| US9312888B2 (en) | 2012-06-29 | 2016-04-12 | Qualcomm Incorporated | Antenna interface circuits for carrier aggregation on multiple antennas |
| US20160380681A1 (en) * | 2015-06-25 | 2016-12-29 | Qualcomm Incorporated | Simplified multi-band/carrier carrier aggregation radio frequency front-end based on frequency-shifted antennas |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002362091A1 (en) * | 2001-12-06 | 2003-06-23 | Protura Wireless, Inc. | Communication device with front-end antenna integration |
| DE10200048B4 (en) * | 2002-01-02 | 2014-04-24 | Qualcomm Incorporated | Connecting the transceivers of multiband / multimode radios to one or more antennas |
| US7162266B2 (en) * | 2004-12-17 | 2007-01-09 | Avago Technologies Wireless Ip (Singapore) Pte.Ltd. | Multiple band handset architecture |
| WO2006085139A2 (en) * | 2004-12-22 | 2006-08-17 | Nokia Corporation | Interoperability improvement between receivers and transmitters in a mobile station |
-
2007
- 2007-11-23 CN CNA2007101936786A patent/CN101442838A/en active Pending
-
2008
- 2008-11-08 WO PCT/IB2008/054683 patent/WO2009066199A2/en active Application Filing
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163390A (en) * | 2008-09-12 | 2015-12-16 | 高通股份有限公司 | Interference management for different wireless communication technologies |
| US8958351B2 (en) | 2011-07-28 | 2015-02-17 | Lg Electronics Inc. | Mobile terminal |
| CN102904624B (en) * | 2011-07-28 | 2015-06-17 | Lg电子株式会社 | Mobile terminal |
| CN102904624A (en) * | 2011-07-28 | 2013-01-30 | Lg电子株式会社 | Mobile terminal |
| CN105376040B (en) * | 2014-08-13 | 2020-05-22 | 天工方案公司 | Radio frequency front end architecture for carrier aggregation for cellular bands |
| US11664963B2 (en) | 2014-08-13 | 2023-05-30 | Skyworks Solutions, Inc. | Devices and methods related to radio-frequency front-end architecture for carrier aggregation of cellular bands |
| CN105376040A (en) * | 2014-08-13 | 2016-03-02 | 天工方案公司 | Radio-frequency front-end architecture for carrier aggregation of cellular bands |
| US11070347B2 (en) | 2014-08-13 | 2021-07-20 | Skyworks Solutions, Inc. | Radio-frequency front-end architecture for carrier aggregation of cellular bands |
| CN105827252A (en) * | 2015-01-28 | 2016-08-03 | 三星电子株式会社 | Method for reducing interference and electronic device thereof |
| US10784904B2 (en) | 2015-02-23 | 2020-09-22 | Qualcomm Incorporated | Transceiver configuration for millimeter wave wireless communications |
| US11190224B2 (en) | 2015-02-23 | 2021-11-30 | Qualcomm Incorporated | Transceiver configuration for millimeter wave wireless communications |
| CN107251444A (en) * | 2015-02-23 | 2017-10-13 | 高通股份有限公司 | Transceiver arrangement for millimeter wave radio communication |
| CN107251444B (en) * | 2015-02-23 | 2020-04-17 | 高通股份有限公司 | Transceiver configuration for millimeter wave wireless communication |
| CN107534451A (en) * | 2015-05-11 | 2018-01-02 | 追踪有限公司 | Radio circuit and the front-end circuit with radio circuit |
| US10530415B2 (en) | 2015-05-11 | 2020-01-07 | Snaptrack, Inc. | HF circuit and front-end circuit comprising an HF circuit |
| CN105098356A (en) * | 2015-09-09 | 2015-11-25 | 天津七一二通信广播有限公司 | Ultraviolet (UV) frequency band and S frequency band dual-mode integrated antenna system applied to communication terminal |
| CN107231167A (en) * | 2016-03-24 | 2017-10-03 | 北京小米移动软件有限公司 | The electronic equipment of radio circuit |
| CN106067828A (en) * | 2016-05-23 | 2016-11-02 | 广东欧珀移动通信有限公司 | Anti-harmonic wave countermeasure set, antenna assembly and the mobile terminal of a kind of carrier aggregation |
| CN106452471B (en) * | 2016-09-29 | 2019-10-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of GSM radio circuit and the terminal including the circuit |
| CN106452471A (en) * | 2016-09-29 | 2017-02-22 | 宇龙计算机通信科技(深圳)有限公司 | GSM radio frequency circuit and terminal comprising circuit |
| CN108390679A (en) * | 2018-02-26 | 2018-08-10 | 广东小天才科技有限公司 | Communication means based on multiple antennas radio-frequency front-end and multiple antennas RF front-end circuit |
| CN109831223A (en) * | 2019-03-21 | 2019-05-31 | Oppo广东移动通信有限公司 | Antenna multiplexed radio-frequency unit and terminal |
| CN112954745B (en) * | 2019-12-10 | 2023-04-28 | 成都鼎桥通信技术有限公司 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
| CN112954745A (en) * | 2019-12-10 | 2021-06-11 | 成都鼎桥通信技术有限公司 | Wide-narrow dual-mode cluster terminal and mode switching method and device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009066199A2 (en) | 2009-05-28 |
| WO2009066199A3 (en) | 2009-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101442838A (en) | System for implementing multi-mode standby terminal by duplexer | |
| CN101442839A (en) | System for implementing multi-mode standby terminal by filter | |
| US11539498B2 (en) | Channelization for signal boosters | |
| US10225845B2 (en) | Channelization for signal boosters | |
| CN102204110B (en) | Interface for wireless communication devices | |
| US20080240000A1 (en) | System and method for radio operation in umts bands i and iv utilizing a single receiving port | |
| US10873387B2 (en) | Signal booster with spectrally adjacent bands | |
| KR101713930B1 (en) | Apparatus for transmitting of portable terminal and operation method thereof | |
| EP3577796A1 (en) | Signal booster with spectrally adjacent bands | |
| CN102833884A (en) | Dual-mode mobile communication terminal | |
| WO2018093928A1 (en) | Signal booster for boosting signals in contiguous bands | |
| EP1190492B1 (en) | An arrangement in a radio system | |
| CN100579265C (en) | Shared radio frequency front end, base station and rdio frequency front end sharing method | |
| KR20110032229A (en) | Duplexer and rf repeater including the same | |
| KR20020070729A (en) | Signal repeater for radio communication system | |
| EP1919089A2 (en) | Switchable transceiver for relay station | |
| WO2018144944A1 (en) | Signal booster with spectrally adjacent bands | |
| EP3811520B1 (en) | Radio unit for unsynchronized tdd multi-band operation | |
| US11362729B2 (en) | Pre-amplifier for a modem | |
| CN213126494U (en) | 4G macro base station, 4G dual-carrier base station platform and communication terminal | |
| EP1499028A1 (en) | Mobile communication device | |
| KR100784149B1 (en) | Dual type time division duplex transmitting/receiving device | |
| KR20000050621A (en) | Gain control possility amplification circuit in the mobile communication terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090527 |