CN101442839A - System for implementing multi-mode standby terminal by filter - Google Patents
System for implementing multi-mode standby terminal by filter Download PDFInfo
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- CN101442839A CN101442839A CNA2007101936790A CN200710193679A CN101442839A CN 101442839 A CN101442839 A CN 101442839A CN A2007101936790 A CNA2007101936790 A CN A2007101936790A CN 200710193679 A CN200710193679 A CN 200710193679A CN 101442839 A CN101442839 A CN 101442839A
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- 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
Abstract
Disclosed is multi-mode terminal device capable of realizing simultaneous communication on multiple networks. The terminal device comprises: a first sending filter connected with a first transceiver used for performing filtering to a first sending signal, where the first transceiver is relative to a first wireless network; and a second sending filter connected with a second transceiver used for performing filtering to a second sending signal, where the second transceiver is relative to a second wireless network. A first antenna connected to the first sending filter sends a first sending signal from the first transceiver and receives a first receiving signal; and the second antenna connected to the second sending filter sends a second sending signal from the second transceiver and receives a second receiving signal. The first sending filter performs attenuation to the interfering signals from the first sending signal in the frequency acceptance band in the second receiving signal; and the second sending filter performs attenuation to the interfering signals from the second sending signal in the frequency acceptance band in the first receiving signal.
Description
The case of the application and the Xuejun Zhang that meanwhile submits to number be that the document of " System for Implementing Multi-Modular Standby Terminal usingDuplexers " by name of No.868953 is relevant, and its purport clearly in this merging as a reference.
Background technology
Along with the growth of requirement for radio communication, the consumer orders various service more continually, comprises and different overlay areas and the dissimilar corresponding services of wireless network.The consumer can use the zone of wireless service to be determined by the service provider, and usually based on the geographical position.Therefore, the consumer who for example 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 not covering these 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 has avoided higher international roaming expense.In addition, do not consider overlay area and roaming charges, even many consumers 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 that operation has jack per station and two different mobile phones that have the ownership overlay area of separating 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 text messaging 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 a plurality of cellular networks, 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 two subscriber information module (SIM) cards and can serve two telephone numbers.Therefore two standby terminals make single terminal more effectively to communicate 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 independent chipsets (or module) to bear two different communication tasks respectively.Because the GSM chipset is relatively cheap, and because these two modules can be shared common 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, wherein, double frequency-band power amplifier 122 has and is used for power amplifier 123,124 that transmitting of two different frequency bands amplified.Usually, receiving filter 120,122 prevents the interference (jamming) intentionally from out of band signal.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 guaranteed that the transmission on any frequency band occurs in and receive different time place.In other words, the first module front end 104 can not transmit and receive simultaneously, has avoided " the sensitivity reduction " and " having a mind to disturb " 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, wherein, double frequency-band power amplifier 160 has and is used for power amplifier 163,164 that transmitting of two different frequency bands amplified.Receiving filter 160,162 is used for each frequency band to prevent the interference of having a mind to from out of band signal.Duplexer 180 optionally links to each other GSM transceiver 160 by one of emission amplifier 163,164 or receiving filter 160,162 with antenna 185.Duplexer 180 can be 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 transmission 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 all can't prevent first module in two standby terminals 100 and the interference between second module.For example, when (for example by transmitter, GSM transceiver 120) signal of being launched (for example arrives in same mobile phone simultaneously the receiver of operation with sufficiently high level, GSM transceiver 160) time, this signal can be so that this saturation of receiver or have a mind to disturb this receiver, thereby stoped 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 (for example by handset transmitter, GSM transceiver 120) noise that is produced (for example arrives in same mobile phone simultaneously the receiver of operation with sufficiently high level, GSM transceiver 160) time, this noise can reduce the signal to noise ratio of this receiver or make this receiver " sensitivity reduction ".This has reduced the ability that 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 by the necessary assembly of emission in second module, and arrives the receiver of first module, has caused " having a mind to disturb " or " the sensitivity reduction " of aforesaid receiver to first module thus.
Summary of the invention
According to exemplary embodiment, communication when a kind of multi-mode terminal equipment has enabled on a plurality of wireless networks.This terminal equipment comprises first and second emission filters and first and second antennas.First emission filter links to each other with first transceiver, and first transceiver is corresponding with first wireless network in a plurality of wireless networks, and this first emission filter is used for transmitting to first and carries out filtering.Second emission filter links to each other with second transceiver, and second transceiver is corresponding with second wireless network in a plurality of wireless networks, and this second emission filter is used for transmitting to second and carries out filtering.First antenna links to each other with first emission filter, and first antenna is used to send from first of first transceiver and transmits and be used to receive first received signal.Second antenna links to each other with second emission filter, and second antenna is used to send from second of second transceiver and transmits and be used to receive second received signal.First emission filter is to decaying from first interference signal that transmits in the frequency acceptance band of second received signal, and second emission filter is to decaying from second interference signal that transmits in the frequency acceptance band of first received signal.
For example, each interference signal can comprise that shot noise leaks.In addition, each in first emission filter and second emission filter can provide the decay of 5dB at least respectively on its corresponding frequency acceptance band.
This terminal equipment can also comprise: first receiving filter that links to each other with first transceiver is used for first received signal is carried out filtering; And second receiving filter that links to each other with second transceiver, be used for second received signal is carried out filtering.First receiving filter is decayed to the interference signal in second emission band that transmits, and second receiving filter is decayed to the interference signal in first emission band that transmits.In first receiving filter and second receiving filter each can provide the decay to the 20dB at least of interference signal respectively.
This terminal equipment can also be included in first power amplifier that connects between first emission filter and first transceiver and second power amplifier that connects between second emission filter and second transceiver.First power amplifier amplifies from transmitting of first transceiver sending, so that transmit on first network, and second power amplifier amplifies from transmitting of second transceiver sending, so that transmit on second network.Can use first emission filter of first duplexer partly to realize first emission filter, wherein the first receiving filter partial earthing.In addition, can use second emission filter of second duplexer partly to realize second emission filter, wherein the second receiving filter partial earthing.
In first transceiver and second transceiver each can comprise double frequency-band GSM transceiver, wherein first frequency band of each double frequency-band GSM transceiver is expansion GSM (EGSM) frequency band, and second frequency band of each double frequency-band GSM transceiver is digital communication system (DCS) frequency band.First emission filter can comprise respectively and EGSM frequency band and the corresponding a plurality of first assigned frequency band emission filters of DCS frequency band.In addition, second emission filter can comprise respectively and EGSM frequency band and the corresponding a plurality of second assigned frequency band emission filters of DCS frequency band.
This terminal equipment can also be included in first double frequency-band power amplifier that connects between first emission filter and first transceiver and the second double frequency-band power amplifier that connects between second emission filter and second transceiver.The first double frequency-band power amplifier is to sending first transmitting and amplify in the EGSM of first transceiver frequency band and DCS frequency band, so that on first network, transmit, and second power amplifier to sending second transmitting and amplify in the EGSM of second transceiver frequency band and DCS frequency band, so that on second network, transmit.In the first double frequency-band power amplifier and the second double frequency-band power amplifier each can comprise and be used for first amplifier that the signal to the EGSM frequency band amplifies and be used for second amplifier that the signal to the DCS frequency band amplifies.
According to another exemplary embodiment, a kind of pair of standby terminal configuration is used for communicating at least one time division multiple access (TDMA) wireless network.This terminal comprises first module and second module.First module comprises: first double frequency band transceiver; First emission filter is used for the transmitting of first frequency band of first module carried out filtering; Second emission filter is used for the transmitting of second frequency band of first module carried out filtering; And first antenna, be used for sending the transmitting of first and second frequency bands of first module.Second module comprises: second double frequency band transceiver; The 3rd emission filter is used for the transmitting of first frequency band of second module carried out filtering; The 4th emission filter is used for the transmitting of second frequency band of second module carried out filtering; And second antenna, be used for sending the transmitting of first and second frequency bands of second module.First and second emission filters of first module have reduced by the interference to the received signal of second module that causes from transmitting of first module.In addition, third and fourth emission filter in second module has reduced by the interference from the caused received signal to first module of transmitting of second module.
In first and second emission filters in first module each can decay to the noise that is produced in the corresponding frequency acceptance band of second module at least, and in third and fourth emission filter in second module each decays to the noise that is produced in the corresponding frequency acceptance band of first module at least.In the first, second, third and the 4th emission filter each can provide the decay of 5dB at least respectively.In addition, first frequency band of each in first and second modules can be the EGSM frequency band, and each second frequency band in first and second modules can be the DCS frequency band.
First module can also comprise first switch, is used for first and second emission filters and the first antenna interfaces.In addition, second module can also comprise second switch, is used for third and fourth emission filter and the second antenna interfaces.In first switch and the second switch each can be hilted broadsword four throw switches.
First module can also comprise first and second duplexers, first and second duplexers comprise first and second emission filters respectively, and second module can also comprise third and fourth duplexer, third and fourth duplexer comprises third and fourth emission filter respectively.At least one receiving filter partial earthing of in the first, second, third and the 4th duplexer each.
First module can also comprise: first receiving filter is used for the received signal of first frequency band of first module is carried out filtering; And second receiving filter, be used for the received signal of second frequency band of first module is carried out filtering.Second module can also comprise: the 3rd receiving filter is used for the received signal of first frequency band of second module is carried out filtering; And the 4th receiving filter, be used for the received signal of second frequency band of second module is carried out filtering.First and second receiving filters in first module have reduced by the interference from the caused received signal to first module of transmitting of second module, and third and fourth receiving filter in second module has reduced by the interference from the caused received signal to second module of transmitting of first module.
According to another exemplary embodiment, a kind of pair of standby terminal configuration is used for communicating on a plurality of TDMA wireless networks.This terminal comprises first module, and this first module comprises: first double frequency band transceiver; First and second emission filters are respectively applied for transmitting in first and second frequency bands are carried out filtering; First and second receiving filters are respectively applied for the received signal in first and second frequency bands are carried out filtering; First antenna is used for the signal that transmits and receives of first and second frequency bands of first module is transmitted; And first transmit/receive switch, be used for optionally the signal that transmits and receives of first and second frequency bands is connected to first antenna.This terminal also comprises second module, and this second module comprises: second double frequency band transceiver; Third and fourth emission filter is respectively applied for transmitting in first and second frequency bands is carried out filtering; Third and fourth receiving filter is respectively applied for the received signal in first and second frequency bands is carried out filtering; Second antenna is used for transmitting transmitting and received signal in first and second frequency bands of second module; And second transmit/receive switch, be used for optionally the signal that transmits and receives of first and second frequency bands is connected to second antenna.First and second receiving filters and third and fourth emission filter have reduced the noise jamming of received signal that first double frequency band transceiver is received.Similarly, third and fourth receiving filter and first and second emission filters have reduced the noise jamming of the received signal that second double frequency band transceiver is received.
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 the following detailed description, unrestricted for explanation, specific detail has been proposed so that provide complete understanding to exemplary embodiment according to existing benefit gained from others' wisdom.Yet, for those skilled in the art of known rights and interests of the present disclosure, it is evident that, keep within the scope of the appended claims with other embodiment that specific detail disclosed herein deviates from mutually according to this benefit gained from others' wisdom.In addition, can omit description, in order to avoid make description ambiguous to exemplary embodiment to device well known by persons skilled in the art, equipment, material and method.This device, equipment, method and material are clearly in 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, two standby terminals 200 can be the TDMA Wireless Telecom Equipments that operates in the gsm communication system.
Two standby terminals 200 comprise two modules: modules A and module B, wherein each all operates on 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 path.Although can merge according to the different-format of modulation scheme to 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 path.The base band 202 of modules A and the base band 206 of module B can co-operations, and by the AT order respectively with each application program interfaces of RF front end 204,208 and Wireless Telecom Equipment.
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 is enabled single antenna 285 as reception antenna and transmitting antenna at each frequency band in the multiband (for example EGSM and DCS).Homodromy 280 makes separately that with signal antenna 285 can be by sharing jointly more than a frequency band.
Use duplexer 226,236 replaces the duplexer (for example, the T/R switch) in the legacy system, for example the T/ R switch 140 or 180 among Fig. 1.The intermodule RF that duplexer 226,236 reduces between modules A transceiver 220 and the module B transceiver 260 disturbs, and for example " has 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 is arranged in antenna 245 and respectively and between each corresponding low noise amplifier (LPA) (not shown) in EGSM and DCS band signal path.EGSM and DCS band signal that receiving filter 227,237 receives with minimal attenuation transmission respectively, but provided height decay to the signal that for example on transmission band, produces, to prevent " having a mind to disturb ".Emission filter 228,238 lays respectively at antenna 245 and respectively and between the power amplifier 223,224 of the corresponding double frequency-band power amplifier 222 of EGSM and DCS band signal path, but provided height decay, to prevent " sensitivity reduction " to the signal that for example on frequency acceptance band, is produced.
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 description that no longer repeats this function.In addition, be understandable that, can comprise add-on module in the terminal, each add-on module wherein in fact all comprises configuration and the function identical with modules A and B, and to reduce the interference of intermodule, this does not deviate from the spirit and scope of each embodiment.
According to exemplary embodiments, module B can transmit and receive signal on EGSM and DCS frequency band and on these same frequency bands modules A side by side transmits and receives signal, and is not subjected to the negative influence that intermodule disturbs.For example, when modules A in received signal and with the module B in a pair of standby terminal 200 when transmitting, overcome the influence that emission is disturbed, vice versa.In addition, this realization is simple relatively, disturbs to overcome intermodule RF, and each module all adopts duplexer to replace T/R switch in traditional GSM terminal.Use duplexer to prevent that interference intentionally and sensitivity from reducing the transmitter of another module.In addition, be used for the EGSM of each module and the community antenna of DCS frequency band, comprised additional frequency divider (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.Be different from the two standby terminals 200 among Fig. 2, the module B among Fig. 3 is not the multiband module such as the multiband gsm system.In this configuration, have only modules A to comprise 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, so can avoid common and duplexer processing broadband DCS (the realization difficult point that for example, 75MHz) is associated.In addition, owing to need less duplexer, the configuration of two standby terminals 300 is simple and cost is lower.
Particularly, because modules A and module B all only transmit and receive (be module B do not launch and receive the DCS band signal) to the EGSM band signal, so the RF front end 304 of modules A only needs a duplexer (duplexer 326) to be used for the EGSM band signal, similarly, the RF front end 308 of module B only needs a duplexer (duplexer 366) to be 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 by duplexer 366 with EGSM bandwidth signal and antenna 385 interfaces, 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, according to frequency band, by one of EGSM first amplifier 323 of double frequency-band power amplifier 322 or DCS second amplifier 324 to amplifying from transmitting of transceiver 320.Then, the EGSM band signal arrives duplexer 339 through the EGSM duplexer 326 that comprises emission filter 328, and this duplexer 339 can be the 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 at wireless network.
To be sent to switch 339 by the signal that antenna 345 is received.When received signal was the EGSM band signal, switch 339 was connected to EGSM duplexer 326.Then, the EGSM band signal arrives transceiver 320 through the EGSM duplexer 326 that comprises receiving filter 327.When this signal was the DCS band signal, switch 339 linked to each other with independent filter (filter 382), and the DCS band signal is sent to transceiver 320 through filter 382, and without duplexer.
On the contrary,, amplify, arrive antennas 385 through the EGSM duplexer 366 that comprises emission filter 368 then 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.EGSM frequency band received signal is received by antenna 345, and arrives transceiver 360 through the EGSM duplexer 366 that comprises receiving filter 367.As mentioned above, RF front end 308 does not receive or emission DCS signal.Therefore, need be such as the duplexer the T/R switch.Carry out to transmit and receive function by EGSM duplexer 366, thereby module B operates effectively 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.The same with two standby terminal 300, the module B among Fig. 4 does not comprise the DCS frequency band, thus avoided may be for the duplexer of the wide bandwidth that is used for the DCS band signal and occur complicated.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 of modules A comprises the additional antenna (antenna 446) of the DCS module that is specifically designed to modules A.Reduced the insertion loss of the EGSM band signal in the modules A in conjunction with antenna 446.Receiving filter 427 by duplexer 426 and emission filter 428 receive and launch EGSM band signal in the modules A respectively.Discuss with respect to duplexer 326 and 366 as above-mentioned, the intermodule that has reduced between the EGSM band signal among modules A and the 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, two standby terminals 500 can be the TDMA Wireless Telecom Equipments that operates in the gsm communication system.
As mentioned above, two standby terminals 500 comprise two modules: modules A and module B, each module wherein all operates on the multiband, for example in the multiband gsm system.Modules A has base band 202 and the RF front end 504 that transmits the IQ symbol on corresponding I and Q path, and module B has base band 206 and the RF front end 508 that similarly transmits the IQ symbol on corresponding I and Q path.The base band 202 of modules A and the base band 206 of module B can co-operations, and by the AT order respectively with each application program interfaces of RF front end 204,208 and Wireless Telecom Equipment.
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.To be sent to switch 539 by the received signal that antenna 545 is received, 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.
Similarly, EGSM receiving filter 527 and DCS receiving filter 537 can have the attenuation requirement of the emission band higher than receiving filter included in the legacy system.For example, each in the receiving filter 527,537 can cause the decay of 20dB at least on corresponding emission band.Yet, can change according to physics realization the accurate attenuation requirement of EGSM receiving filter 527 and DCS receiving filter 537.
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 SP4T switch as the T/R switch of each frequency band.
Switch 579 optionally is connected to antenna 585 with EGSM band signal and DCS band signal, so that communicate on 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.To be sent to switch 579 by the received signal that antenna 585 is received, 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 for 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 for 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, with the description that no longer repeats these elements.
In an embodiment, can use the emission filter 428 (for example by receiving filter 427 ground connection) of the duplexer 426 among Fig. 4 to realize EGSM emission filter 528 with duplexer 426.Similarly, can use the receiving filter 427 (for example by with emission filter 428 ground connection) of duplexer 426 to realize EGSM receiving filter 527.Similarly, in each embodiment, can use the duplexer of corresponding receiving filter ground connection to realize emission filter 538,568 and 578, and can use the duplexer of 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 discussing for 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 EGSM first amplifier 523 of double frequency-band power amplifier 522 or DCS second amplifier 524 from transmitting of transceiver 520, and by one of EGSM emission filter 528 or DCS emission filter 538.Switch 539 links to each other with suitable emission filter 528 or 538, and will transmit and offer antenna 545 in order to transmit.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.EGSM and DCS band signal that receiving filter 527,537 receives with minimal attenuation transmission respectively, but provided height decay to the signal that on emission band, produces, for example to prevent " having a mind to disturb ".Emission filter 528,538 transmits EGSM and the DCS band signal of being launched with minimal attenuation respectively, but has provided the height decay to the signal that is produced on frequency acceptance band, for example 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, for module B, with the description that no longer repeats its function.In addition, be understandable that, can comprise add-on module in the terminal, each add-on module wherein in fact all comprises configuration and the function identical with modules A and B, and to reduce the interference of intermodule, this does not deviate from the spirit and scope of each embodiment.According to exemplary embodiments, module B can transmit and receive signal on EGSM and DCS frequency band and on these same frequency bands modules A side by side transmits and receives signal, 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.
In conjunction with exemplary embodiment, two standby terminals of a plurality of modules with duplexer have been described.It will be apparent to one skilled in the art that many changes that may exist, and these change still within the scope of the appended claims according to this benefit gained from others' wisdom.After having inspected the specification here, accompanying drawing and claim, these and other change will become apparent the technology of this area.Therefore, except being positioned at the spirit and scope of claims, the present invention is not limited by other.
Claims (20)
1. multi-mode terminal equipment that is used to enable on a plurality of wireless networks time communication, described terminal equipment comprises:
First emission filter that links to each other with first transceiver is used for transmitting to first and carries out filtering, and described first transceiver is corresponding with first wireless network in described a plurality of wireless networks;
Second emission filter that links to each other with second transceiver is used for transmitting to second and carries out filtering, and described second transceiver is corresponding with second wireless network in described a plurality of wireless networks;
First antenna that links to each other with first emission filter is used to send from first of first transceiver and transmits, and receives first received signal; And
Second antenna that links to each other with second emission filter is used to send from second of second transceiver and transmits, and receives second received signal,
Wherein, described first emission filter is to decaying from first interference signal that transmits in the frequency acceptance band of second received signal, and described second emission filter is to decaying from second interference signal that transmits in the frequency acceptance band of first received signal.
2. terminal equipment according to claim 1, wherein, each interference signal comprises that all shot noise leaks.
3. terminal equipment according to claim 2, wherein, each in described first emission filter and second emission filter all provides the decay of 5dB at least respectively on its corresponding frequency acceptance band.
4. terminal equipment according to claim 1 also comprises:
First receiving filter that links to each other with first transceiver is used for first received signal is carried out filtering, and described first receiving filter is decayed to the interference signal on second emission band that transmits; And
Second receiving filter that links to each other with second transceiver is used for second received signal is carried out filtering, and described second receiving filter is decayed to the interference signal on first emission band that transmits.
5. terminal equipment according to claim 4, wherein, each in described first receiving filter and second receiving filter all provides the decay of 20dB at least to interference signal respectively.
6. terminal equipment according to claim 1 also comprises:
First power amplifier that connects between first emission filter and first transceiver, described first power amplifier transmit from first of first transceiver to transmission and amplify, so that transmit on first network; And
Second power amplifier that connects between second emission filter and second transceiver, described second power amplifier transmit from second of second transceiver to transmission and amplify, so that transmit on second network.
7. terminal equipment according to claim 1 wherein, uses first emission filter in first duplexer partly to realize first emission filter, wherein the first receiving filter partial earthing; And
Use second emission filter in second duplexer partly to realize second emission filter, wherein the second receiving filter partial earthing.
8. terminal equipment according to claim 1, wherein, in first transceiver and second transceiver each all comprises double frequency-band GSM transceiver, wherein, first frequency band in each double frequency-band GSM transceiver all comprises expansion GSM (EGSM) frequency band, and second frequency band in each double frequency-band GSM transceiver all comprises digital communication system (DCS) frequency band.
9. terminal equipment according to claim 8, wherein, described first emission filter comprises respectively and EGSM frequency band and the corresponding a plurality of first assigned frequency band emission filters of DCS frequency band, and
Described second emission filter comprises respectively and EGSM frequency band and the corresponding a plurality of second assigned frequency band emission filters of DCS frequency band.
10. terminal equipment according to claim 8 also comprises:
The first double frequency-band power amplifier that between first emission filter and first transceiver, connects, the described first double frequency-band power amplifier is to sending first transmitting and amplify in the EGSM of first transceiver and DCS frequency band, so that transmit in first network; And
The second double frequency-band power amplifier that connects between second emission filter and second transceiver, described second power amplifier is to sending second transmitting and amplify in the EGSM of second transceiver and DCS frequency band, so that transmit in second network.
11. terminal equipment according to claim 10, wherein, each in the first double frequency-band power amplifier and the second double frequency-band power amplifier 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.
12. one kind is used for two standby terminals of communicating at least one time division multiple access (TDMA) wireless network, described terminal comprises:
First module comprises: first double frequency band transceiver; First emission filter is used for the transmitting of first frequency band of first module carried out filtering; Second emission filter is used for the transmitting of second frequency band of first module carried out filtering; And first antenna, be used for sending the transmitting of first and second frequency bands of first module; And
Second module comprises: second double frequency band transceiver; The 3rd emission filter is used for the transmitting of first frequency band of second module carried out filtering; The 4th emission filter is used for the transmitting of second frequency band of second module carried out filtering; And second antenna, be used for sending the transmitting of first and second frequency bands of second module,
Wherein, first and second emission filters in first module have reduced by the interference from the caused received signal to second module of transmitting of first module, and third and fourth emission filter in second module has reduced by the interference from the caused received signal to first module of transmitting of second module.
13. according to claim 12 pair of standby terminal, wherein, in first and second emission filters in first module each decays to the noise that is produced in the corresponding frequency acceptance band of second module at least, and in third and fourth emission filter in second module each decays to the noise that is produced in the corresponding frequency acceptance band of first module at least.
14. according to claim 13 pair of standby terminal, wherein, each of the first, second, third and the 4th emission filter provides the decay of 5dB at least respectively.
15. according to claim 12 pair of standby terminal, wherein, described first module also comprises first switch that is used for first and second emission filters and the first antenna interfaces, and described second module also comprises the second switch that is used for third and fourth emission filter and the second antenna interfaces.
16. according to claim 15 pair of standby terminal, wherein, each in first switch and the second switch all comprises hilted broadsword four throw switches.
17. according to claim 13 pair of standby terminal, wherein, described first module also comprises first and second duplexers, described first and second duplexers comprise first and second emission filters respectively, and described second module also comprises third and fourth duplexer, described third and fourth duplexer comprises third and fourth emission filter respectively
Wherein, at least one receiving filter partial earthing in each of the first, second, third and the 4th duplexer.
18. according to claim 13 pair of standby terminal, wherein, first frequency band in first and second modules each all comprises expansion GSM (EGSM) frequency band, and second frequency band in first and second modules each all comprises digital communication system (DCS) frequency band.
19. according to claim 12 pair of standby terminal, wherein, described first module also comprises: first receiving filter is used for the received signal of first frequency band of first module is carried out filtering; And second receiving filter, be used for the received signal of second frequency band of first module is carried out filtering, and second module can also comprise: the 3rd receiving filter is used for the received signal of first frequency band of second module is carried out filtering; And the 4th receiving filter, be used for the received signal of second frequency band of second module is carried out filtering,
Wherein, first and second receiving filters in first module have reduced by the interference from the caused received signal to first module of transmitting of second module, and third and fourth receiving filter in second module has reduced by the interference from the caused received signal to second module of transmitting of first module.
20. one kind is used for two standby terminals of communicating on a plurality of time division multiple accesses (TDMA) wireless network, described terminal comprises:
First module comprises: first double frequency band transceiver; First and second emission filters are respectively applied for transmitting of first and second frequency bands are carried out filtering; First and second receiving filters are respectively applied for the received signal in first and second frequency bands are carried out filtering; First antenna is used for the signal that transmits and receives of first and second frequency bands of first module is transmitted; And first transmit/receive switch, be used for optionally the signal that transmits and receives of first and second frequency bands is connected to first antenna; And
Second module comprises: second double frequency band transceiver; Third and fourth emission filter is respectively applied for transmitting of first and second frequency bands is carried out filtering; Third and fourth receiving filter is respectively applied for the received signal of first and second frequency bands is carried out filtering; Second antenna is used for the signal that transmits and receives of first and second frequency bands of second module is transmitted; And second transmit/receive switch, be used for optionally the signal that transmits and receives of first and second frequency bands is connected to second antenna,
Wherein, first and second receiving filters and third and fourth emission filter have reduced the noise jamming of received signal that first double frequency band transceiver is received, and third and fourth receiving filter and first and second emission filters have reduced the noise jamming of received signal that second double frequency band transceiver is received.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101936790A CN101442839A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by filter |
| PCT/IB2008/054684 WO2009066200A2 (en) | 2007-11-23 | 2008-11-08 | System for implementing multi-modular standby terminal using filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101936790A CN101442839A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101442839A true CN101442839A (en) | 2009-05-27 |
Family
ID=40565288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101936790A Pending CN101442839A (en) | 2007-11-23 | 2007-11-23 | System for implementing multi-mode standby terminal by filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101442839A (en) |
| WO (1) | WO2009066200A2 (en) |
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| CN101977388A (en) * | 2010-11-01 | 2011-02-16 | 华为技术有限公司 | Method, device and system for controlling uplink interference signal |
| CN102332929A (en) * | 2011-09-23 | 2012-01-25 | 中兴通讯股份有限公司 | Dual-mode radio frequency module, dual-mode radio frequency sending and receiving method and user terminal |
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| 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 |
| KR100938619B1 (en) * | 2004-12-22 | 2010-01-22 | 노키아 코포레이션 | Interoperability improvement between receivers and transmitters in a mobile station |
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| CN101977388A (en) * | 2010-11-01 | 2011-02-16 | 华为技术有限公司 | Method, device and system for controlling uplink interference signal |
| CN102332929B (en) * | 2011-09-23 | 2016-08-03 | 中兴通讯股份有限公司 | Dual-mode radio frequency module, dual-mode radio frequency sending, receiving method and user terminal |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2009066200A2 (en) | 2009-05-28 |
| WO2009066200A3 (en) | 2009-07-09 |
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Application publication date: 20090527 |