CN105577258A - Diversity Receiver Front End System With Switching Network - Google Patents

Abstract

Diversity receiver front end system with a switching network. A receiving system can include a plurality of amplifiers, each one of the plurality of amplifiers disposed along a corresponding one of a plurality of paths between an input of the receiving system and an output of the receiving system and configured to amplify a signal received at the amplifier. The receiving system can further include a switching network including one or more single-pole/single-throw switches, each one of the switches coupling two of the plurality of paths. The receiving system can further include a controller configured to receive a band select signal and, based on the band select signal, enable one of the plurality of amplifiers and control the switching network.

Description

There is the diversity receiver front end system of switching network

The cross reference of related application

The application advocates the U.S. Provisional Application being entitled as " DIVERSITYRECEIVERFRONTENDSYSTEM " the 62/073rd that on October 31st, 2014 submits to, No. 043, the U.S. Provisional Application being entitled as " ADAPTIVEMULTIBANDLNAFORCARRIERAGGREGATION " the 62/073rd that on October 31st, 2014 submits to, No. 041, the U. S. application the 14/727th being entitled as " DIVERSITYRECEIVERFRONTENDSYSTEMWITHVARIABLE-GAINAMPLIFIE RS " submitted to on 06 01st, 2015, No. 739, and the U. S. application being entitled as " DIVERSITYRECEIVERFRONTENDSYSTEMWITHSWITCHINGNETWORK " the 14/734th that on 06 09th, 2015 submits to, the priority of No. 746, its each disclosure hereby by reference and clearly entirety be herein incorporated.

Technical field

The application relates generally to the wireless communication system with one or more diversity reception antennas.

Background technology

In wireless communications application, size, cost and performance are the examples of factor that may be important for given product.Such as, in order to improving performance, such as diversity reception antenna is just becoming more popular with the radio parts of the Circuits System be associated and so on.

In many radio frequencies (RF) application, diversity reception antenna is placed physically away from main antenna (primaryantenna).When two antennas are simultaneously all by use, transceiver can process signal from two antennas to improve data throughout.

Summary of the invention

According to some execution modes, the application relates to a kind of receiving system, and it comprises multiple amplifier.The correspondence of each edge in described multiple amplifier in the multiple paths between the input and the output of described receiving system of described receiving system path is arranged, and is configured to be amplified in the signal that described amplifier place receives.Described receiving system also comprises switching network, and described switching network comprises one or more single-pole single-throw switch (SPST).Each two of coupling in described multiple path in described switch.Described receiving system also comprises controller, and it is configured to frequency acceptance band and selects signal, and carrys out in enable described multiple amplifier based on described band selected signal and control described switching network.

In certain embodiments, described controller can be configured in response to receiving the band selected signal indicating single frequency band, an amplifier corresponding with described single frequency band in enable described multiple amplifier, and it is whole with what disconnect in described one or more switch to control described switching network.

In certain embodiments, described controller can be configured in response to receiving the band selected signal indicating multiple frequency band, an amplifier corresponding with a frequency band in described multiple frequency band in enable described multiple amplifier, and control described switching network to connect at least one switch between the path that described multiple frequency band is corresponding in described one or more switch.

In certain embodiments, described receiving system also can comprise multiple phase-shifting elements, each in described multiple phase-shifting elements can be arranged along the path of the correspondence in described multiple path, and can be configured to and carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.In certain embodiments, each in described multiple phase-shifting elements is arranged between described switching network and described input.In certain embodiments, at least one the comprised tunable phase shift parts in described multiple phase-shifting elements, it is configured to pass through signal phase shift one amount of described tunable phase shift parts, and described amount is controlled by the phase shift harmonic ringing received from controller.In certain embodiments, described controller can be configured to and generates described phase shift harmonic ringing based on described band selected signal.

In certain embodiments, described receiving system also can comprise multiple impedance match part.Each in described multiple impedance match part can be arranged along the path of the correspondence in described multiple path, and can be configured to the noise factor in the described path reduced in described multiple path.In certain embodiments, each in described multiple impedance match part is arranged between described switching network and the corresponding amplifier in described multiple amplifier.In certain embodiments, at least one the comprised adjustable impedance matching block in described multiple impedance match part, it is configured to present the impedance by the impedance-tumed signal controlling received from described controller.In certain embodiments, described controller can be configured to and generates described impedance-tumed signal based on described band selected signal.

In certain embodiments, described receiving system also can comprise multiplexer, and it is configured to the input signal received in described input is separated into the multiple signals at multiple corresponding frequencies band place along described multiple propagated.

In certain embodiments, at least one comprised twin-stage (dual-stage) amplifier in described multiple amplifier.

In certain embodiments, described controller also can be configured to an amplifier in enable described multiple amplifier and forbids other amplifier in described multiple amplifier.

In some embodiments, the application relates to a kind of radio frequency (RF) module, and it comprises the package substrate being configured to hold multiple parts.Described RF module also comprises the receiving system implemented in described package substrate.Described receiving system comprises multiple amplifier.Each amplifier in described multiple amplifier is arranged along the path of the correspondence in the multiple paths between the input and the output of described receiving system of described receiving system, and is configured to be amplified in the signal that described amplifier place receives.Described receiving system also comprises switching network, and described switching network comprises one or more single-pole single-throw switch (SPST).Each two paths coupled in described multiple path in described switch.Described receiving system also comprises controller, and described controller is configured to frequency acceptance band and selects signal and carry out in enable described multiple amplifier based on described band selected signal and control described switching network.

In certain embodiments, described RF module can be diversity receiver front-end module (FEM).

In certain embodiments, described receiving system also can comprise multiple phase-shifting elements.Each in described multiple phase-shifting elements can be arranged along the path of the correspondence in described multiple path, and can be configured to and carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.

According to some instructions, the application relates to a kind of wireless device, and it comprises the first antenna being configured to reception first radio frequency (RF) signal.Described wireless device also comprises the first front-end module (FEM) with described first antenna communication.A described FEM comprises the package substrate being configured to hold multiple parts.A described FEM also comprises the receiving system implemented in described package substrate.Described receiving system comprises multiple amplifier.The correspondence of each edge in described multiple amplifier in the multiple paths between the input and the output of described receiving system of described receiving system path is arranged, and is configured to be amplified in the signal that described amplifier place receives.Described receiving system also comprises switching network, and described switching network comprises one or more single-pole single-throw switch (SPST).Each two paths coupled in described multiple path in described switch.Described receiving system also comprises controller, and described controller is configured to frequency acceptance band and selects signal and carry out in enable described multiple amplifier based on described band selected signal and control described switching network.Described wireless device also comprises transceiver, and it is configured to generate data bit via the process version of cable from the process version of the described RF signal of described output reception and based on a described RF signal.

In some embodiments, described wireless device also can comprise the second antenna of being configured to reception second radio frequency (RF) signal and the 2nd FEM with described second antenna communication.Described transceiver can be configured to the process version of the described 2nd RF signal of output reception from described 2nd FEM and the process version based on described 2nd RF signal generates data bit.

In some embodiments, described receiving system also can comprise multiple phase-shifting elements.Each in described multiple phase-shifting elements can be arranged along the path of the correspondence in described multiple path, and can be configured to and carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.

For the object of general introduction the application, some aspect of the present invention, advantage and novel feature are described herein.Should be appreciated that, according to any specific embodiment of the present invention, not necessarily will realize all these advantages.Thus, can implement according to the mode of the advantage realized or optimize as here instructed or one group of advantage or realize the present invention, and not need to realize other advantage as instructed or advise here.

Accompanying drawing explanation

Fig. 1 illustrates the wireless device with the communication module being couple to main antenna and diversity antenna.

Fig. 2 illustrates the DRx configuration comprising diversity receiver (DRx) front-end module (FEM).

Fig. 3 illustrates in certain embodiments, and diversity receiver (DRx) configuration can comprise the DRx module with the multiple paths corresponding with multiple frequency band.

Fig. 4 illustrates in certain embodiments, and diversity receiver configuration can comprise the diversity RF module than diversity receiver (DRx) module with less amplifier.

Fig. 5 illustrates in certain embodiments, and diversity receiver configuration can comprise the DRx module with single-pole single-throw switch (SPST).

Fig. 6 illustrates in certain embodiments, and diversity receiver configuration can comprise the DRx module with adjustable (tunable) phase-shifting elements.

Fig. 7 illustrates the embodiment that the flow process of the method for processing RF signals represents.

Fig. 8 illustrates the module with one or more feature described herein.

Fig. 9 illustrates the wireless device with one or more feature described herein.

Embodiment

Here the subhead (if any) provided is only conveniently, and not necessarily affects scope or the meaning of claimed invention.

Fig. 1 illustrates the wireless device 100 with the communication module 110 being couple to main antenna 130 and diversity antenna 140.Communication module 110 (and building block) can be controlled by controller 120.Communication module 110 comprises and is configured to carry out at analog radio frequency (RF) transceiver 112 changed between signal and digital data signal.For this reason, transceiver 112 can comprise digital to analog converter, analog to digital converter, for base-band analog signal is modulated to carrier frequency or from the local oscillator of carrier frequency de not modulation base-band analog signal, be used for the baseband processor carrying out changing between digital sample and data bit (such as, the data of speech or other type) or other parts.

Communication module 110 also comprises the RF module 114 be coupled between main antenna 130 and transceiver 112.Because RF module 114 can physically close to main antenna 130 to reduce owing to the decay of cable waste (cableloss), so RF module 114 can be called as front-end module (FEM).RF module 114 can perform process for transceiver 112 to the analog signal received from main antenna 130, or launches for via main antenna 130 the analog signal execution process received from transceiver 112.For this reason, RF module 114 can comprise filter, power amplifier, band selection switches, match circuit and other parts.Similarly, communication module 110 comprises the diversity RF module 116 of the similar process of execution be coupled between diversity antenna 140 and transceiver 112.

When signal is sent to wireless device, this signal can be received at both main antenna 130 and diversity antenna 140 place.Main antenna 130 and diversity antenna 140 can be physically spaced apart, make the signal received at main antenna 130 and diversity antenna 140 place have different characteristics.Such as, in one embodiment, main antenna 130 and diversity antenna 140 can receive the signal with differential declines, noise, frequency response or phase shift.Transceiver 112 can use two signals with different qualities to determine the data bit corresponding with signal.In some embodiments, transceiver 112 is selected between main antenna 130 and diversity antenna 140 based on characteristic, such as, select the antenna with highest signal to noise ratio.In some embodiments, transceiver 112 combines the signal of self-consistent antenna 130 and diversity antenna 140 to improve the signal to noise ratio of composite signal.In some embodiments, transceiver 112 processing signals is to perform multiple input/multiple output (MIMO) communication.

Because diversity antenna 140 is physically spaced apart with main antenna 130, so diversity antenna 140 is couple to communication module 110 by the transmission line 135 of such as cable or printed circuit board (PCB) (PCB) trace (trace) and so on.In some embodiments, transmission line 135 is lossy and made it decay before the signal that diversity antenna 140 place receives arrives communication module 110.Therefore, in some embodiments, as described below, gain is applied to the signal received at diversity antenna 140 place.Gain (and other simulation process, such as filtering) is employed by diversity receiver module.Because such diversity receiver module can be located physically close to diversity antenna 140, so it can be described as diversity receiver front-end module.

Fig. 2 illustrates the DRx configuration 200 comprising diversity receiver (DRx) front-end module (FEM) 210.DRx configuration 200 comprises diversity antenna 140, and it is configured to receive diversity signal and provides this diversity signal to DRxFEM210.The diversity signal that DRxFEM210 is configured to receiving from diversity antenna 140 performs process.Such as, DRxFEM210 can be configured to diversity signal filtering to the one or more activation frequency bands such as indicated by controller 120.As another example, DRxFEM210 can be configured to amplification diversity signal.For this reason, DRxFEM210 can comprise filter, low noise amplifier, band selection switches, match circuit and other parts.

DRxFEM210 via transmission line 135 by process after diversity signal be sent to downstream module, such as diversity RF (D-RF) module 116, its by further process after diversity signal feeding (feed) to transceiver 112.Diversity RF module 116 (and, in some embodiments, transceiver) controlled by controller 120.In some embodiments, controller 120 can be embodied in transceiver 112.

Fig. 3 illustrates in certain embodiments, and diversity receiver (DRx) configures 300 can comprise the DRx module 310 with the multiple paths corresponding with multiple frequency band.DRx configuration 300 comprises the diversity antenna 140 being configured to receive diversity signal.In some embodiments, diversity signal can be the single frequency tone signal comprising the data be modulated on single frequency band.In some embodiments, diversity signal can be the multi-band signal (also referred to as carrier aggregation signal between frequency band) comprising the data be modulated on multiple frequency band.

DRx module 310 has to receive provides the diversity signal after process to the output of transceiver 330 from the input of the diversity signal of diversity antenna 140 and (via transmission line 135 and diversity RF module 320).The input of DRx module 310 is fed in the input of the first multiplexer 311.First multiplexer (MUX) 311 comprises multiple multiplexer and exports, the path between its each input and output corresponding to DRx module 310.Each path may correspond in corresponding frequency band.The output of DRx module 310 is provided by the output of the second multiplexer 312.Second multiplexer 312 comprises the input of multiple multiplexer, one of path between its each input and output corresponding to DRx module 310.

Frequency band can be the honeycomb frequency band of such as UMTS (universal mobile telecommunications system) frequency band and so on.Such as, first frequency band can be UMTS down link between 1930 megahertzes (MHz) and 1990MHz or " Rx " frequency band 2, and second frequency band can be UMTS down link between 869MHz and 894MHz or " Rx " frequency band 5.Other down-link frequencies band can be used, those or other the non-UMTS frequency band such as described in Table 1 below.

In some embodiments, DRx module 310 comprises DRx controller 302, and it receives the signal of self-controller 120 (also referred to as communication controler) and one or more in optionally activating between input and output multiple paths based on the signal received.In some embodiments, DRx module 310 does not comprise DRx controller 302, and one or more directly in the multiple path of selective activation of controller 120.

As mentioned above, in some embodiments, diversity signal is single frequency tone signal.Therefore, in some embodiments, first multiplexer 311 is that (SPMT) switch thrown by hilted broadsword more, and diversity signal to be routed to the path corresponding with the frequency band of single frequency tone signal in multiple path by it based on the signal received from DRx controller 302.The band selected signal that DRx controller 302 can receive from communication controler 120 based on DRx controller 302 generates signal.Similarly, in some embodiments, the second multiplexer 312 is SPMT switches, its based on the signal incoming road received from DRx controller 302 by the signal from the path corresponding with the frequency band of single frequency tone signal in multiple path.

As mentioned above, in some embodiments, diversity signal is multi-band signal.Therefore, in some embodiments, first multiplexer 311 is demultiplexers, and diversity signal to be routed to two or more paths corresponding with two or more frequency bands of multi-band signal in multiple path by it based on the separator control signal received from DRx controller 302.The function of demultiplexer can be embodied as certain combination of SPMT switch, duplexer (diplexer) filter or these devices.Similarly, in some embodiments, second multiplexer 312 is signal combiners, and it is based on the signal of the combiner control signal combination received from DRx controller 302 from two or more paths corresponding with two or more frequency bands of multi-band signal in multiple path.The function of signal combiner can be embodied as certain combination of SPMT switch, diplexer filter or these devices.DRx controller 302 can generate separator control signal and combiner control signal based on DRx controller 302 from the band selected signal that communication controler 120 receives.

Therefore, in some embodiments, the band selected signal that DRx controller 302 is configured to receive based on DRx controller 302 (such as, from communication controler 120) optionally activates the one or more paths multiple path.In some embodiments, DRx controller 302 is configured to pass and sends separator control signal to demultiplexer with send one or more paths that combiner control signal to come to signal combiner in the multiple path of selective activation.

DRx module 310 comprises multiple band pass filter 313a-313d.Each in band pass filter 313a-313d is arranged along the path of the correspondence in multiple path, and is configured to the signal filtering that receives at the band pass filter place corresponding frequencies band to the described path in multiple path.In some embodiments, band pass filter 313a-313d is also configured to the signal filtering that receives at the band pass filter place down-link frequencies subband to the corresponding frequencies band in the described path in multiple path.DRx module 310 comprises multiple amplifier 314a-314d.Each in amplifier 314a-314d is arranged along the path of the correspondence in multiple path, and is configured to be amplified in the signal that amplifier place receives.

In some embodiments, amplifier 314a-314d is the narrow-band amplifier of the signal being configured to amplify in the corresponding frequencies band in the path wherein arranging described amplifier.In some embodiments, amplifier 314a-314d can be controlled by DRx controller 302.Such as, in some embodiments, each enable/disable that comprises in amplifier 314a-314d inputs and is enabled (or forbidding) based on the amplifier enable signal received in enable/disable input.Amplifier enable signal can be sent by DRx controller 302.Therefore, in some embodiments, DRx controller 302 be configured to pass transmit amplifier enable signal in the amplifier 314a-314d arranged along the one or more paths in multiple path respectively one or more come described one or more in the multiple path of selective activation.In such execution mode, not controlled by DRx controller 302, the first multiplexer 311 can be demultiplexer, each in multiple path of its route diversity signal; And the second multiplexer 312 can be signal combiner, its combination is from the signal in each path in multiple path.But DRx controller 302 controls in the execution mode of the first multiplexer 311 and the second multiplexer 312 wherein, DRx controller 302 also can enable (or forbidding) specific amplifier 314a-314d, such as to save battery.

In some embodiments, amplifier 314a-314d is variable gain amplifier (VGA).Therefore, in some embodiments, DRx module 310 comprises multiple variable gain amplifier (VGA), and each VGA arranges along the path of the correspondence in multiple path and is configured to the signal that receives to be amplified in VGA with the gain controlled by the amplifier control signal received from DRx controller 302.

The gain of VGA can be can bypass, can stepped change, can continually varying.In some embodiments, at least one by-pass switch comprising fixed gain amplifier and can be controlled by amplifier control signal in each VGA.By-pass switch can (in primary importance) connect fixed gain amplifier the output being input to fixed gain amplifier between circuit, make signal bypass cross fixed gain amplifier.By-pass switch (in the second place) can disconnect circuit between described input and output, makes signal transmission pass through fixed gain amplifier.In some embodiments, when by-pass switch is in primary importance, fixed gain amplifier is prohibited or otherwise reconfigures to adapt to described bypass mode.

In some embodiments, at least one in each VGA comprises gain can the amplifier (step-variablegainamplifier) of stepped change, and it is configured to the signal received to be amplified in VGA place with the gain of one of multiple configuration amount of amplifier control signal instruction.In some embodiments, at least one in each VGA comprises gain can continually varying amplifier (continuously-variablegainamplifier), and it is configured to the signal received to be amplified in VGA place with the gain proportional with amplifier control signal.

In some embodiments, amplifier 314a-314d is current-variable amplifier (VCA).The electric current that VCA draws (draw) can be can bypass, can stepped change, can continually varying.In some embodiments, at least one by-pass switch comprising fixed current amplifier and can be controlled by amplifier control signal in each VCA.By-pass switch can (in primary importance) connect fixed current amplifier the output being input to fixed current amplifier between circuit, make signal bypass cross fixed current amplifier.By-pass switch (in the second place) can disconnect circuit between described input and output, makes signal transmission by fixed current amplifier.In some embodiments, when by-pass switch is in primary importance, fixed current amplifier is prohibited or otherwise reconfigures to adapt to described bypass mode.

In some embodiments, at least one in each VCA comprises electric current can the amplifier (step-variablecurrentamplifier) of stepped change, and it is configured to pass the signal that the electric current that draws one of multiple configuration amount of being indicated by amplifier control signal receives to be amplified in VCA.In some embodiments, at least one in each VCA comprises electric current can continually varying amplifier (continuously-variablecurrentamplifier), and it is configured to pass the signal drawing the electric current proportional with amplifier control signal and receive to be amplified in VCA place.

In some embodiments, amplifier 314a-314d is fixed gain, fixed current amplifier.In some embodiments, amplifier 314a-314d is fixed gain, variable current amplifier.In some embodiments, amplifier 314a-314d is variable gain, fixed current amplifier.In some embodiments, amplifier 314a-314d is variable gain, variable current amplifier.

In some embodiments, DRx controller 302 generates amplifier control signal based on the quality of service measures (metric) of the input signal received in input.In some embodiments, DRx controller 302 generates amplifier control signal based on the signal received from communication controler 120, and the signal that should receive from communication controler 120 can be measured based on the service quality of this Received signal strength (QoS) again then.The QoS metric of Received signal strength can at least in part based on the diversity signal that diversity antenna 140 receives (input signal such as, received in input).The QoS metric of Received signal strength also can based on the signal received on main antenna.In some embodiments, DRx controller 302 generates amplifier control signal based on the QoS metric of diversity signal, and not from communication controler 120 Received signal strength.

In some embodiments, QoS metric comprises signal strength signal intensity.As another example, QoS metric can comprise the error rate, data throughout, transmission delay or other QoS metric any.

As mentioned above, DRx module 310 has to receive provides the diversity signal after process to the output of transceiver 330 from the input of the diversity signal of diversity antenna 140 and (via transmission line 135 and diversity RF module 320).Diversity RF module 320 receives the diversity signal after process via transmission line 135 and performs further process.Especially, the diversity signal after process is separated or is routed to one or more path by diversity RF multiplexer 321, and the signal of separation or route amplifies by the band pass filter 323a-323d filtering of correspondence and by the amplifier 324a-324d of correspondence thereon.The output of each amplifier 324a-324d is provided to transceiver 330.

Diversity RF multiplexer 321 can be controlled by controller 120 (directly or via (on-chip) diversity RF controller on sheet) with the one or more path of selective activation.Similarly, amplifier 324a-324d can be controlled by controller 120.Such as, in some embodiments, each enable/disable that comprises in amplifier 324a-324d inputs and is enabled based on amplifier enable signal (or forbidding).In some embodiments, amplifier 324a-324d is variable gain amplifier (VGA), the signal that its gain controlled with the amplifier control signal received from controller 120 (or on the sheet controlled by controller 120 diversity RF controller) receives to be amplified in VGA.In some embodiments, amplifier 324a-324d is variable current amplifier (VCA).

Because the DRx module 310 of adding receiver chain to has comprised diversity RF module 320, so DRx configures the doubles of the band pass filter in 300.Therefore, in some embodiments, band pass filter 323a-323d is not included in diversity RF module 320.But the band pass filter 313a-313d of DRx module 310 is used to reduce (out-of-band) outside band and blocks the intensity of signal (blocker).In addition, automatic growth control (AGC) table of diversity RF module 320 can be shifted the amount of gain that (shift) reduces with the amount of gain provided by the amplifier 324a-324d of diversity RF module 320 to be provided by the amplifier 314a-314d of DRx module 310.

Such as, if the gain of DRx module is 15dB and receiver sensitivity is-100dBm, so diversity RF module 320 will see the sensitivity of-85dBm.If the closed loop AGC of diversity RF module 320 activates, so its gain will decline 15dB automatically.But signal component and band outer retardance component are all received and amplify 15dB.Therefore, the 15dB gain decline of diversity RF module 320 also can be attended by the 15dB raising of its linearity.Especially, the amplifier 324a-324d of diversity RF module 320 can be designed so that the linearity of amplifier reduces (or electric current increase) along with gain and increases.

In some embodiments, the gain (and/or electric current) of the amplifier 314a-314d of controller 120 control DRx module 310 and the amplifier 324a-324d of diversity RF module 320.As in the examples described above, the amount of gain that the amount of gain that controller 120 can provide in response to the amplifier 314a-314d increasing DRx module 310 and reducing is provided by the amplifier 324a-324d of diversity RF module 320.Therefore, in some embodiments, controller 120 is configured to generate (the amplifier 324a-324d for diversity RF module 320) downstream amplifier control signal, controlling the gain of the one or more downstream amplifier 324a-324d being couple to (DRx module 310) output via transmission line 135 based on (the amplifier 314a-314d for DRx module 310) amplifier control signal.In some embodiments, controller 120 also controls the gain of other parts (amplifier such as, in front-end module (FEM)) of wireless device based on amplifier control signal.

As mentioned above, in some embodiments, band pass filter 323a-323d is not comprised.Therefore, in some embodiments, at least one in downstream amplifier 324a-324d is couple to (DRx module 310) output via transmission line 135, and not through downstream belt bandpass filter.

Fig. 4 illustrates in certain embodiments, and diversity receiver configures 400 comparable diversity receiver (DRx) modules 310 and comprises the diversity RF module 420 with less amplifier.Diversity receiver configuration 400 comprises diversity antenna 140 and DRx module 310, as described in Figure 3.The output of DRx module 310 is delivered to diversity RF module 420 via transmission line 135, and its diversity RF module 420 be in Fig. 4 with the difference of the diversity RF module 320 in Fig. 3 comprises less amplifier than DRx module 310.

As mentioned above, in some embodiments, diversity RF module 420 does not comprise band pass filter.Therefore, in some embodiments, one or more amplifiers 424 of diversity RF module 420 need not be (band-specific) for special frequency band.Especially, diversity RF module 420 can comprise one or more path, and each path comprises amplifier 424, and described path is not map 1 with the path 1 of DRx module 310.The mapping in such path (or amplifier of correspondence) can be stored in controller 120.

Therefore, although DRx module 310 comprises multiple path, each path corresponds to a frequency band, and diversity RF module 420 can comprise the one or more paths not corresponding to single frequency band.

In some execution modes (as shown in Figure 4), diversity RF module 420 comprises single wide-band amplifier 424, and it amplifies the signal that receives from transmission line 135 and exports amplifying signal to multiplexer 421.Multiplexer 421 comprises multiple multiplexer and exports, each corresponding to corresponding frequency band.In some embodiments, diversity RF module 420 does not comprise any amplifier.

In some embodiments, diversity signal is single frequency tone signal.Therefore, in some embodiments, multiplexer 421 is SPMT switches, and its corresponding with the frequency band of single frequency tone signal one of to be routed to by diversity signal in multiple output based on the signal received from controller 120 exports.In some embodiments, diversity signal is multi-band signal.Therefore, in some embodiments, multiplexer 421 is demultiplexers, and based on the separator control signal received from controller 120, by diversity signal, two or more corresponding with two or more frequency bands of multi-band signal be routed in multiple output export for it.In some embodiments, diversity RF module 420 can be combined as individual module with transceiver 330.

In some embodiments, diversity RF module 420 comprises multiple amplifier, and each amplifier corresponds to a class frequency band.Signal from transmission line 135 can be fed in band separator, and this band separator exports high frequency to high-frequency amplifier and along the second path output low frequency to low frequency amplifier along the first path.The output of each amplifier can be provided to multiplexer 421, and multiplexer 421 is configured to correspondence input signal being routed to transceiver 330.

Fig. 5 illustrates in certain embodiments, and diversity receiver configuration 500 can comprise the DRx module 510 with single-pole single-throw switch (SPST) 519.DRx module 510 comprises two paths of the output (it is couple to transmission line 135) from the input (it is couple to antenna 140) of DRx module 510 to DRx module 510.DRx module 510 comprises multiple amplifier 514a-514b, and each in multiple amplifier 514a-514b arranges along the path of the correspondence in multiple path and be configured to be amplified in the signal that amplifier place receives.In some embodiments, as shown in Figure 5, at least one in multiple amplifier comprises two-stage amplifier.

In the DRx module 510 of Fig. 5, demultiplexer and band pass filter are embodied as duplexer 511.Duplexer 511 comprises the input being couple to antenna 140, the first output being couple to the phase-shifting elements 527a arranged along the first path and is couple to second output of the second phase-shifting elements 527b along the second path setting.In the first output, duplexer 511 export receive input (such as, from antenna 140), filtering is to the signal of first frequency band.In the second output, duplexer 511 export receive in input, filtering is to the signal of second frequency band.In some embodiments, duplexer 511 or can be configured to other multiplexer any being in multiple signals of corresponding multiple frequency band be separated into by the input signal that the input in DRx module 510 receives along multiple propagated and substitutes with triplexer, four multiplexers.

In some embodiments, being arranged on output multiplexer or other signal combiner of the output of DRx module, such as Fig. 3 second multiplexer 312, the performance of DRx module may be reduced when receiving single frequency tone signal.Such as, output multiplexer may decay single frequency tone signal or introduce noise to single frequency tone signal.In some embodiments, when multiple amplifiers of the amplifier 314a-314d and so on of such as Fig. 3 are enabled to support multi-band signal simultaneously, each amplifier not only may introduce in-band noise, and introduces out-of-band noise for each frequency band in other multiple frequency band.

Some during the DRx module 510 of Fig. 5 solves these problems.DRx module 510 comprises and couples single-pole single-throw(SPST (SPST) switch 519 of the first path to the second path.In order to operate with single band pattern for first frequency band, switch 519 is placed in open position, and the first amplifier 514a is enabled, and the second amplifier 514b is prohibited.Therefore, the single frequency tone signal at first frequency band place propagates into transmission line 135 along the first path from antenna 140, and does not have switching loss.Similarly, in order to operate with single band pattern for second frequency band, switch 519 is placed in open position, and the first amplifier 514a is prohibited, and the second amplifier 514b is enabled.Therefore, the single frequency tone signal at second frequency band place propagates into transmission line 135 along the second path from antenna 140, and does not have switching loss.

In order to operate with multiband pattern for first frequency band and second frequency band, switch 519 is placed in on-position, and the first amplifier 514a is enabled, and the second amplifier 514b is prohibited.Therefore, the first frequency band portion of multi-band signal is propagated along the first path by the first phase-shifting elements 527a, the first impedance match part 526a and the first amplifier 514a.First frequency band portion is prevented from crossing (traverse) switch 519 and passes through the second phase-shifting elements 527b backpropagation along the second path.Especially, the second phase-shifting elements 527b is configured to carry out phase shift to maximize the impedance at (or at least increasing) first frequency band place to the first frequency band portion of the signal passing through the second phase-shifting elements 527b.

The second frequency band portion of multi-band signal along the second propagated, crosses switch 519 by the second phase-shifting elements 527b, and by the first impedance match part 526a and the first amplifier 514a along the first propagated.Second frequency band portion is prevented from by the first phase-shifting elements 527a along the first path backpropagation.Especially, the first phase-shifting elements 527a is configured to carry out phase shift to maximize the impedance at (or at least increasing) second frequency band place to the second frequency band portion of the signal passing through the first phase-shifting elements 527a.

Each path can be characterized by noise factor and gain.The noise factor in each path is the expression reduced the signal to noise ratio (SNR) caused by the amplifier arranged along path and impedance match part 526a-526b.Especially, the noise factor in each path is that the SNR in the input of impedance match part 526a-526b and the decibel (dB) between the SNR of the output of amplifier 314a-314b are poor.Therefore, noise factor is that the noise of amplifier exports estimating of the difference exported with the noise of " ideal " amplifier (it does not produce noise) with identical gain.

The noise factor in each path can be different for different frequency band.Such as, the first path can have the first noise factor for first frequency band and the second noise factor for second frequency band.The noise factor in (at each frequency band place) each path and gain can depend on (at each frequency band place) impedance of impedance match part 526a-526b at least in part.Therefore, will will be advantageous that, the impedance of impedance match part 526a-526b makes the noise factor in each path minimize (or reduction).

In some embodiments, the second impedance match part 526b presents the impedance of the noise factor minimizing (or reduction) second frequency band.In some embodiments, the first impedance match part 526a minimizes the noise factor of (or reduction) first frequency band.In some embodiments, because the second frequency band portion of multi-band signal can partly be propagated along Part I, so the first impedance match part 526a minimizes the tolerance that (or reduction) comprises the noise factor of the first frequency band and the noise factor of the second frequency band.

Impedance match part 526a-526b can be embodied as passive circuit.Especially, impedance match part 526a-526b may be embodied as rlc circuit and comprises one or more passive component, such as resistor, inductor and/or capacitor.Passive component can be in parallel and/or be connected in series and can be connected between the output of phase-shifting elements 527a-527b and the input of amplifier 514a-514b or between the output that can be connected to phase-shifting elements 527a-527b and ground voltage.

Similarly, phase-shifting elements 527a-527b may be embodied as passive circuit.Especially, phase-shifting elements 527a-527b may be embodied as lc circuit and comprises one or more passive component, such as inductor and/or capacitor.Passive component can be in parallel and/or be connected in series, and can be connected between the output of duplexer 511 and the input of impedance match part 526a-526b or between the output that can be connected to duplexer 511 and ground voltage.

Fig. 6 illustrates in certain embodiments, and diversity receiver configuration 600 can comprise the DRx module 610 with tunable phase shift parts 627a-627d.Each can be configured in tunable phase shift parts 627a-627d will pass through signal phase shift one amount of tunable phase shift parts, and this amount is controlled by the phase shift harmonic ringing received from controller.

Diversity reception configuration 600 comprises DRx module 610, DRx module 610 and has the input being couple to antenna 140 and the output being couple to transmission line 135.DRx module 610 is included in the multiple paths between the input and output of DRx module 610.Each path comprises multiplexer 311, band pass filter 313a-313d, tunable phase shift parts 627a-627d, switching network 612, adjustable impedance matching block 626a-626d and amplifier 314a-314d.As mentioned above, amplifier 314a-314d can be variable gain amplifier and/or variable current amplifier.

Tunable phase shift parts 627a-627d can comprise one or more units of variance, such as inductor and capacitor.Units of variance can be in parallel and/or be connected in series, and can be connected between the output of multiplexer 311 and the input of switching network 612, or can be connected between the output of multiplexer and ground voltage.

Adjustable impedance matching block 626a-626d can be adjustable T circuit, adjustable PI circuit or other adjustable match circuit any.Adjustable impedance matching block 626a-626d can comprise one or more units of variance, such as resistor, inductor and capacitor.Units of variance can be in parallel and/or be connected in series, and can be connected between the output of switching network 612 and the input of amplifier 314a-314d, or between the output that can be connected to switching network 612 and ground voltage.

It is one or more that DRx controller 602 is configured in the multiple paths between selective activation input and output.In some embodiments, the band selected signal that DRx controller 602 is configured to receive based on DRx controller 602 (such as, from communication controler) comes the one or more paths the multiple path of selective activation.DRx controller 602 by such as enable or forbid amplifier 314a-314d, can control multiplexer 311 and/or switching network 612, or by other mechanism (mechanism), comes selective activation path.

In some embodiments, DRx controller 602 carrys out control switch network 612 based on band selected signal.Switching network comprises multiple spst switch, and each switch couples two paths in multiple path.DRx controller 602 can transmit button signal (or multiple switching signal) to switching network with disconnect or connect described multiple spst switch.Such as, if band selected signal indicative input signal comprises first frequency band and second frequency band, so DRx controller 602 can connect the switch between the first path and the second path.If band selected signal indicative input signal comprises second frequency band and the 4th frequency band, so DRx controller 602 can connect the switch between the second path and the 4th path.If band selected signal indicative input signal comprises first frequency band, second frequency band and the 4th frequency band, so DRx controller 602 can connect described both switches (and/or the switch connected between the first path and the second path and the switch between the first path and the 4th).If band selected signal indicative input signal comprises second frequency band, the 3rd frequency band and the 4th frequency band, so DRx controller 602 can connect the switch between the second path and the 3rd path and the switch between the 3rd path and the 4th path (and/or the switch connected between the second path and the 3rd path and the switch between the second path and the 4th path).

In some embodiments, DRx controller 602 is configured to tuning tunable phase shift parts 627a-627d.In some embodiments, DRx controller 602 carrys out tuning tunable phase shift parts 627a-627d based on band selected signal.Such as, DRx controller 602 can carry out tuning tunable phase shift parts 627a-627d based on the look-up table be associated with tuner parameters by the frequency band (or frequency band group) indicated by band selected signal.Therefore, in response to band selected signal, DRx controller 602 can send phase shift harmonic ringing to the tunable phase shift parts 627a-627d in each activated path, to carry out tuning tunable phase shift parts (or its units of variance) according to tuner parameters.

DRx controller 602 can be configured to tunable phase shift parts 627a-627d in tuning each activated path to maximize the impedance at (or at least increasing) the frequency band place corresponding with other activated path.Therefore, if the first path and the 3rd path activate, so the tunable first phase-shifting elements 627a of DRx controller 602 is to maximize the impedance at (or at least increasing) the 3rd frequency band place, if and the first path and the 4th path activate, so the tunable first phase-shifting elements 627a of DRx controller 602 is to maximize the impedance at (or at least increasing) the 4th frequency band place.

In some embodiments, DRx controller 602 is configured to tuning adjustable impedance matching block 626a-626d.In some embodiments, DRx controller 602 carrys out tuning adjustable impedance matching block 626a-626d based on band selected signal.Such as, DRx controller 602 can carry out tuning adjustable impedance matching block 626a-626d based on the look-up table be associated with tuner parameters by the frequency band (or frequency band group) indicated by band selected signal.Therefore, in response to band selected signal, DRx controller 602 can send impedance-tumed signal to the adjustable impedance matching block 626a-626d had in the path activating amplifier according to tuner parameters.

In some embodiments, the adjustable impedance matching block 626a-626d in the tuning path with activation amplifier of DRx controller 602 is to minimize the tolerance that (or reduction) comprises the noise factor of the respective frequencies band of each activated path.

In various embodiments, one or more in tunable phase shift parts 627a-627d or adjustable impedance matching block 626a-626d can be can't help the fixed part that DRx controller 602 controls and be substituted.

Fig. 7 illustrates the embodiment that the flow process of the method 700 of processing RF signals represents.In some embodiments (and as below as an example describe in detail), described method 700 is performed by the controller of the Drx controller 602 and so on of such as Fig. 6.In some embodiments, method 700 is performed by processing logic, and this processing logic comprises hardware, firmware, software or their combination.In some embodiments, method 700 is performed by the processor operation code be stored in non-transitory computer-readable medium (such as, memory).In brief, method 700 comprises frequency acceptance band and selects signal and carry out RF signal that route receives along one or more path to process the RF signal received.

Method 700 starts from selects signal at frame 710 place controller frequency acceptance band.Controller can select signal from another controller frequency acceptance band, or can select signal from cellular basestation or other external source frequency acceptance band.Band selected signal can indicate wireless device to transmit and receive one or more frequency bands of RF signal.In some embodiments, band selected signal instruction is used for a class frequency band of carrier aggregation communication.

At frame 720 place, controller carrys out the amplifier of transmit amplifier enable signal to DRx module based on band selected signal.In some embodiments, band selected signal indicates single frequency band, and the amplifier that controller transmit amplifier enable signal is arranged with the path that enable edge is corresponding with described single frequency band.Controller can transmit amplifier enable signal to forbid other amplifier arranged along other path corresponding with other frequency band.In some embodiments, band selected signal indicates multiple frequency band, and controller transmit amplifier enable signal is with the enable amplifier arranged along the path corresponding with a frequency band in described multiple frequency band in multiple path.Controller can transmit amplifier enable signal to forbid other amplifier.In some embodiments, the amplifier that the path that the enable edge of controller is corresponding with low-limit frequency band is arranged.

At frame 730 place, controller carrys out transmit button signal to control the switching network of single-pole single-throw(SPST (SPST) switch based on band selected signal.Switching network comprises the multiple spst switches coupling the multiple paths corresponding with multiple frequency band.In some embodiments, band selected signal indicates single frequency band, and controller sends the switching signal disconnecting whole spst switch.In some embodiments, band selected signal indicates multiple frequency band, and controller transmit button signal is to connect one or more spst switch, thus couples the path corresponding with described multiple frequency band.

At frame 740 place, controller sends harmonic ringing to one or more tunable component based on band selected signal.It is one or more that tunable component can comprise in multiple tunable phase shift parts or multiple adjustable impedance matching block.Controller can carry out tuning tunable component based on the look-up table be associated with tuner parameters by the frequency band (or frequency band group) indicated by band selected signal.Therefore, in response to band selected signal, DRx controller can send harmonic ringing to (activated path) tunable component with according to tuner parameters this tunable component tuning (or its units of variance).

Fig. 8 illustrates in certain embodiments, the configuration of some or all diversity receivers (such as, Fig. 3,4, those shown in 5 and 6) can implement in the module whole or in part.Such module can be such as front-end module (FEM).Such module can be such as diversity receiver (DRx) FEM.In the example of fig. 8, module 800 can comprise package substrate 802, and multiple parts can be arranged in such package substrate 802.Such as, controller 804 (it can comprise front-end power management integrated circuit (FE-PIMC)), low noise amplifier assembly (assembly) 806 (it can comprise one or more variable gain amplifier), matching block 808 (it can comprise one or more fixing or tunable phase shift parts 831 and one or more fixing or adjustable impedance matching block 832), multiplexer elements 810 (it can comprise the switching network 833 of spst switch), and bank of filters 812 (it can comprise one or more band pass filter) can install and/or implement in package substrate 802 and/or in.Such as other parts of multiple SMT device 814 and so on also can be arranged in package substrate 802.Although the whole layouts that are depicted as in various parts are in package substrate 802, will be appreciated that certain (some) parts may be implemented in above other certain (some) parts.

In some embodiments, device and/or the circuit with one or more feature described herein can be included in the RF electronic installation of such as wireless device and so on.Such device and/or circuit can be embodied directly in wireless device, implement with modular form described herein, or implement with their certain combination.In certain embodiments, such wireless device can comprise such as cell phone, smart phone, tool are with or without telephony feature handheld wire-less apparatus, wireless flat etc.

Fig. 9 illustrates the example wireless device 900 with one or more favorable characteristics described herein.In the context of one or more modules with one or more feature described herein, such module can usually be represented by dotted line frame 901 (it can be embodied as such as front-end module), diversity RF module 911 (it can be embodied as such as downstream module) and diversity receiver (DRx) module 800 (it can be embodied as such as front-end module).

With reference to Fig. 9, power amplifier (PA) 920 can receive its corresponding RF signal from transceiver 910, and transceiver 910 can configure in a known way and operate to generate the RF signal that will amplify and launch, and processes the signal received.Transceiver 910 is depicted as with baseband subsystems 908 mutual, and baseband subsystems 908 is configured to provide the conversion between data and/or voice signal and the RF signal being suitable for transceiver 910 being suitable for user.Transceiver 910 also can communicate with power management components 906, and power management components 906 is configured to manage the power for the operation of wireless device 900.Such power management also can control the operation of baseband subsystems 908 and module 901,911 and 800.

Baseband subsystems 908 is depicted as and is connected to user interface 902 so that be provided to and be received from the speech of user and/or the various input and output of data.Baseband subsystems 908 also can be connected to memory 904, and memory 904 is configured to storage data and/or instruction so that the operation of wireless device, and/or provides the storage to user profile.

In the wireless device 900 of example, the output of PA920 is depicted as to be mated by (via corresponding match circuit 922) and to be routed to its corresponding duplexer 924.Such amplification and filtered signal are routed to main antenna 916 for transmitting by duplexer 914.In certain embodiments, duplexer 924 can allow to use community antenna (such as, main antenna 916) to perform transmitting and receiving operation simultaneously.In fig .9, Received signal strength is depicted as and is routed to " Rx " path, and it can comprise such as low noise amplifier (LNA).

The diversity receiver module 800 that wireless device also comprises diversity antenna 926 and receives from the signal of diversity antenna 926.Diversity receiver module 800 processes the signal that receives and via cable 935, the signal after process is sent to diversity RF module 911, diversity RF module 911 and feeding signals to this signal of process that takes a step forward of transceiver 910.

One or more features of the application can be implemented together with various honeycomb frequency band described herein.The example of such frequency band is listed in table 1.To understand, at least some frequency band can be divided into sub-band.Also will understand, one or more features of the application can be implemented together with the frequency range of specifying of the example without such as table 1 and so on.

Table 1

Unless context clearly separately has requirement, otherwise run through specification and claims, will according to the meaning of adversative the comprising property with exclusiveness or exhaustive, that is, " comprise (comprise) " to explain term according to the meaning of " including but not limited to ", " comprising (comprising) " etc.The word used as here " couples " and refers to that two or more elements directly can connect or connect by means of one or more intermediary element.Similarly, the term " connection " used as here refers to that two or more elements directly can connect or connect by means of one or more intermediary element.In addition, when used in this application, term " here ", " above ", " below " and the term of similar implication should refer to the application as a whole, instead of any concrete part of the application.When context allows, use the term in the above detailed description of odd number or plural number also can comprise plural number or odd number respectively.Mention the term "or" during list of two or more projects, it is whole that this term is contained in the following explanation of this term: any combination of project in any project in list, all items in list and list.

In addition, unless otherwise expressly specified, or another Rational Solutions in used context, otherwise the conditional statement here used, inter alia such as "available", " can ", " energy ", " meeting ", " possibility ", " such as ", " such as ", " such as " etc., be generally intended to show that some embodiment comprises and other embodiments do not comprise some feature, element and/or state.Thus, it is that one or more embodiment is necessary by any way that such conditional statement is generally not intended to imply that feature, element and/or state are, or implies one or more embodiment necessarily comprises for judging whether comprise the logic that maybe will perform these features, element and/or feature in any specific embodiment when being with or without designer's input or prompting.

The above detailed description of the embodiment of the present invention is not intended to be exhaustive, or precise forms disclosed above limiting the invention to.Although describe specific embodiments of the invention above for purposes of illustration and for example of the present invention, as the skilled person will recognize, various equivalent modifications are within the scope of the present invention possible.Such as, although according to presenting process or block to definite sequence, but the embodiment of replacing can perform the process of the step with different order, or adopt the system with the block of different order, and some process or block can deleted, mobile, add, deduct, combine and/or revise.Can according to various different mode realize these process or block in each.Similarly, perform serially although sometimes process or block are depicted as, on the contrary, these process or block also can perform concurrently, or can perform at different time.

The instruction of the present invention provided can be applied to other system here, and need not to be above-mentioned system.Can combine the element of each above-mentioned embodiment and action, to provide further embodiment.

Although described some embodiment of the present invention, only present these embodiments by means of example, and described embodiment is not intended to limit the scope of the present disclosure.In fact, novel method described here and system can be implemented according to other form multiple; In addition, the pro forma various omission of method and system described herein, replacement and change can be made at, and not depart from the spirit of the application.Accompanying drawing and their equivalent are intended to contain this form as fallen in the scope and spirit of the application or amendment.

Claims (20)

1. a receiving system, comprising:

Multiple amplifier, the correspondence of each edge in described multiple amplifier in the multiple paths between the input and the output of described receiving system of described receiving system path is arranged, and is configured to be amplified in the signal that described amplifier place receives;

Switching network, comprises one or more single-pole single-throw switch (SPST), each two of coupling in described multiple path in described switch; And

Controller, it is configured to frequency acceptance band and selects signal, and carrys out in enable described multiple amplifier based on described band selected signal and control described switching network.

2. the receiving system of claim 1, wherein, described controller is configured in response to receiving the band selected signal indicating single frequency band, an amplifier corresponding with described single frequency band in enable described multiple amplifier, and it is whole with what disconnect in described one or more switch to control described switching network.

3. the receiving system of claim 1, wherein, described controller is configured in response to receiving the band selected signal indicating multiple frequency band, an amplifier corresponding with a frequency band in described multiple frequency band in enable described multiple amplifier, and control described switching network to connect at least one switch between the path that described multiple frequency band is corresponding in described one or more switch.

4. the receiving system of claim 1, also comprise multiple phase-shifting elements, each in described multiple phase-shifting elements is arranged along the path of the correspondence in described multiple path, and is configured to carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.

5. the receiving system of claim 4, wherein, each in described multiple phase-shifting elements is arranged between described switching network and described input.

6. the receiving system of claim 4, wherein, at least one in described multiple phase-shifting elements comprises tunable phase shift parts, and it is configured to pass through signal phase shift one amount of described tunable phase shift parts, and described amount is controlled by the phase shift harmonic ringing received from controller.

7. the receiving system of claim 6, wherein, described controller is configured to generate described phase shift harmonic ringing based on described band selected signal.

8. the receiving system of claim 1, also comprise: multiple impedance match part, each in described multiple impedance match part is arranged along the path of the correspondence in described multiple path, and is configured to the noise factor in the described path reduced in described multiple path.

9. the receiving system of claim 7, wherein, each in described multiple impedance match part is arranged between described switching network and the corresponding amplifier in described multiple amplifier.

10. the receiving system of claim 7, wherein, at least one in described multiple impedance match part comprises adjustable impedance matching block, and it is configured to present the impedance by the impedance-tumed signal controlling received from described controller.

The receiving system of 11. claims 7, wherein, described controller is configured to generate described impedance-tumed signal based on described band selected signal.

The receiving system of 12. claims 1, also comprises: multiplexer, and it is configured to the input signal received in described input is separated into the multiple signals at multiple corresponding frequencies band place along described multiple propagated.

The receiving system of 13. claims 1, wherein, at least one in described multiple amplifier comprises two-stage amplifier.

The receiving system of 14. claims 1, wherein, described controller is also configured to forbid other amplifier in described multiple amplifier.

15. 1 kinds of radio frequency modules, comprising:

Package substrate, is configured to hold multiple parts; And

Receiving system, implement in described package substrate, described receiving system comprises multiple amplifier, switching network, and controller, the correspondence of each edge in described multiple amplifier in the multiple paths between the input and the output of described receiving system of described receiving system path is arranged, and be configured to be amplified in the signal that described amplifier place receives, described switching network comprises one or more single-pole single-throw switch (SPST), each two paths coupled in described multiple path in described switch, described controller is configured to frequency acceptance band and selects signal and carry out in enable described multiple amplifier based on described band selected signal and control described switching network.

The RF module of 16. claims 15, wherein, described RF module is diversity receiver front-end module FEM.

The RF module of 17. claims 15, wherein, described receiving system also comprises multiple phase-shifting elements, each in described multiple phase-shifting elements is arranged along the path of the correspondence in described multiple path, and is configured to carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.

18. 1 kinds of wireless devices, comprising:

First antenna, is configured to reception first radio frequency rf signal;

First front-end module FEM, with described first antenna communication, a described FEM comprises the package substrate being configured to hold multiple parts, a described FEM also comprises the receiving system implemented in described package substrate, described receiving system comprises multiple amplifier, switching network, and controller, the correspondence of each edge in described multiple amplifier in the multiple paths between the input and the output of described receiving system of described receiving system path is arranged, and be configured to be amplified in the signal that described amplifier place receives, described switching network comprises one or more single-pole single-throw switch (SPST), each two paths coupled in described multiple path in described switch, described controller is configured to frequency acceptance band and selects signal and carry out in enable described multiple amplifier based on described band selected signal and control described switching network, and

Transceiver, is configured to generate data bit via the process version of cable from the process version of the described RF signal of described output reception and based on a described RF signal.

The wireless device of 19. claims 18, also comprise: be configured to the second antenna of reception second radio frequency rf signal and the 2nd FEM with described second antenna communication, described transceiver arrangement is receive the process version of described 2nd RF signal and the process version based on described 2nd RF signal generates data bit from the output of described 2nd FEM.

The wireless device of 20. claims 18, wherein, described receiving system also comprises multiple phase-shifting elements, each in described multiple phase-shifting elements is arranged along the path of the correspondence in described multiple path, and is configured to carry out phase shift to increase the impedance of the frequency band corresponding with another path in described multiple path to the signal passing through described phase-shifting elements.