TWI611663B - Diversity receiver front end system with flexible band routing - Google Patents

Abstract

The present invention relates to a diversity receiver front-end system with flexible band routing. A receiving system may include a plurality of amplifiers, each of the plurality of amplifiers is 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 is configured To amplify a radio frequency (RF) signal received at the amplifier. The receiving system may further include an input multiplexer configured to receive one or more RF signals at one or more input multiplexer inputs, and inputting the one or more RF signals to the input multiplexer. Each is output to one or more of the plurality of input multiplexer outputs to propagate along a respective one or more of the plurality of paths. The receiving system may further include an output multiplexer configured to receive propagation at one or more of the respective output multiplexer inputs along the respective one or more of the plurality of paths. One or more amplified RF signals, and each of the one or more amplified RF signals is output to a selected one of a plurality of output multiplexer outputs. The receiving system may further include a controller configured to receive a frequency band selection signal and control the input multiplexer and the output multiplexer based on the frequency band selection signal.

Description

Diversity receiver front-end system with flexible band routing Cross-reference to related applications

This application claims the priority of the following applications: US Provisional Application No. 62 / 073,043, entitled DIVERSITY RECEIVER FRONT END SYSTEM, filed on October 31, 2014, and FLEXIBLE MULTI- BAND MULTI-ANTENNA RECEIVER MODULE U.S. Provisional Application No. 62 / 073,042, U.S. Application No. 14 / 727,739, entitled DIVERSITY FRONT END SYSTEM WITH VARIABLE-GAIN AMPLIFIERS, filed June 1, 2015, and August 2015 U.S. Application No. 14 / 836,575, entitled DIVERSITY RECEIVER FRONT END SYSTEM WITH FLEXIBLE ROUTING, filed on the 26th, the disclosure of each of these applications is hereby expressly incorporated herein by reference in its entirety.

The present invention relates generally to wireless communication systems having one or more diversity receiving antennas.

In wireless communication applications, size, cost, and performance are examples of factors that may be critical to a given product. For example, to improve performance, wireless components such as diversity receive antennas and associated circuits are becoming more popular.

In several radio frequency (RF) applications, the diversity receiving antenna is placed physically away from the main antenna. When using two antennas at the same time, the transceiver can process signals from both antennas to increase data throughput.

According to some implementations, the present invention relates to a receiving system including a plurality of amplifiers. Each of the plurality of amplifiers is 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 is configured to amplify a radio frequency (RF) signal received at the amplifier. The receiving system further includes an input multiplexer configured to receive one or more RF signals at one or more input multiplexer inputs and each of the one or more RF signals. The output to one or more of the plurality of input multiplexer outputs is propagated along one or more of each of the plurality of paths. The receiving system further includes an output multiplexer configured to receive one or more propagating along one or more of the plurality of paths at one or more respective output multiplexer inputs. A plurality of amplified RF signals, and each of the one or more amplified RF signals is output to a selected one of a plurality of output multiplexer outputs. The receiving system further includes a controller configured to receive a frequency band selection signal and control the input multiplexer and the output multiplexer based on the frequency band selection signal.

In some embodiments, in response to a band selection signal indicating that the one or more RF signals include a single frequency band, the controller may be configured to control the output multiplexer to input the output multiplexer corresponding to the single frequency band. The amplified RF signal received there is routed to a preset output multiplexer output. In some embodiments, the preset output multiplexer output is different for different single frequency bands.

In some embodiments, in response to a frequency band selection signal indicating that the one or more RF signals include a first frequency band and a second frequency band, the controller may be configured to control the output multiplexer so that the The amplified RF signal received at the input of the output multiplexer is routed to the output of the first output multiplexer and the amplified RF signal received at the input of the output multiplexer corresponding to the second frequency band is routed to the second output multiplexer. Output. In some embodiments, the Both the first frequency band and the second frequency band may be a high frequency band or a low frequency band.

In some embodiments, in response to indicating that the one or more RF signals include a first frequency band, a second frequency band, and a third frequency band selection signal, the controller may be configured to control the output multiplexer to The amplified RF signal received at the input of the output multiplexer of one band and the amplified RF signal received at the input of the output multiplexer corresponding to the second band to generate a combined signal to route the combined signal to the first output multi And output the amplified RF signal received at the input of the output multiplexer corresponding to the third frequency band to the output of the second output multiplexer. In some embodiments, the first frequency band and the second frequency band may be the closest of the first frequency band, the second frequency band, and the third frequency band. In some embodiments, the first frequency band and the second frequency band may be the furthest of the first frequency band, the second frequency band, and the third frequency band.

In some embodiments, the controller may be configured to control the output multiplexer combination in response to a band selection signal indicating that the one or more RF signals include multiple frequency bands and a controller signal indicating that the transmission line is unavailable A plurality of amplified RF signals received at a plurality of output multiplexer inputs corresponding to a plurality of frequency bands to generate a combined signal and route the combined signal to an output multiplexer output.

In some embodiments, the controller may be configured to control the output multiplexer in response to the first frequency band selection signal to route the amplified RF signal received at the input of the output multiplexer to the output of the first output multiplexer, In response to the second frequency band selection signal, the output multiplexer is controlled to route the amplified RF signal received at the input of the output multiplexer to the output of the second output multiplexer.

In some embodiments, the output multiplexer may include a first combiner coupled to the output of the first output multiplexer and a second combiner coupled to the output of the second output multiplexer. In some embodiments, the output multiplexer input may be coupled to the first combiner and the second combiner via one or more switches. In some embodiments, the controller may control the output multiplexer by controlling the one or more switches. In some embodiments, the one or more switches may include two unipolar / Single throw (SPST) switch. In some embodiments, the one or more switches may include a single single-pole / multi-throw (SPMT) switch. In some embodiments, the receiving system further includes a plurality of transmission lines respectively coupled to the outputs of the plurality of output multiplexers.

In some implementations, the invention relates to a radio frequency (RF) module that includes a package substrate configured to receive a plurality of components. The RF module further includes a receiving system implemented on the package substrate. The receiving system includes a plurality of amplifiers. Each of the plurality of amplifiers is 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 is configured to amplify a radio frequency (RF) signal received at the amplifier. The receiving system includes an input multiplexer configured to receive one or more RF signals at one or more input multiplexer inputs and output each of the one or more RF signals. The selected one or more of the plurality of input multiplexer outputs are propagated along each of the plurality of paths. The receiving system includes an output multiplexer configured to receive, at one or more respective output multiplexer inputs, one or more channels that propagate along each one or more of a plurality of paths. Amplify the RF signal and output each of the one or more amplified RF signals to a selected one of a plurality of output multiplexer outputs. The receiving system includes a controller configured to receive a frequency band selection signal and control an input multiplexer and an output multiplexer based on the frequency band selection signal.

In some embodiments, the RF module may be a diversity receiver front-end module (FEM).

According to some teachings, the present invention relates to a wireless device including a first antenna configured to receive a first radio frequency (RF) signal. The wireless device further includes a first front-end module (FEM) in communication with the first antenna. The first FEM includes a package substrate configured to receive a plurality of components. The first FEM further includes a receiving system implemented on the package substrate. The receiving system includes a plurality of amplifiers. Each of the plurality of amplifiers is 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 is configured to amplify a radio frequency (RF) signal received at the amplifier. The receiving system includes an input multiplexer configured to receive one or more RF signals at one or more input multiplexer inputs and Each of the one or more RF signals is output to a selected one or more of a plurality of input multiplexer outputs to propagate along a respective one or more of the plurality of paths. The receiving system includes an output multiplexer configured to receive one or more propagated along each one or more of the plurality of paths at one or more respective output multiplexer inputs. The amplified RF signal is output to each of the one or more amplified RF signals to a selected one of a plurality of output multiplexer outputs. The receiving system includes a controller configured to receive a frequency band selection signal and control an input multiplexer and an output multiplexer based on the frequency band selection signal. The wireless device further includes a communication module configured to receive a processed version of the first RF signal from the output via a plurality of transmission lines respectively coupled to the outputs of the plurality of output multiplexers and based on the first RF signal. The processed version generates data bits.

In some embodiments, the wireless device further includes a second antenna configured to receive a second radio frequency (RF) signal and a second FEM in communication with the second antenna. The communication module may be configured to receive a processed version of the second RF signal from the output of the second FEM and generate data bits based on the processed version of the second RF signal.

For the purpose of summarizing the invention, certain aspects, advantages, and novel features of the invention have been described herein. It should be understood that not all of these advantages may be achieved according to any particular embodiment of the invention. Thus, the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein.

100‧‧‧Wireless devices

110‧‧‧communication module

112‧‧‧Transceiver

114‧‧‧RF Module

116‧‧‧Diversity RF Module

120‧‧‧ Controller

130‧‧‧main antenna

135‧‧‧Transmission line

140‧‧‧Diversity antenna

200‧‧‧Diversity receiver configuration

210‧‧‧Diversity receiver front-end module

300‧‧‧Diversity receiver configuration

302‧‧‧Diversity receiver controller

310‧‧‧Diversity Receiver Module

311‧‧‧The first multiplexer

312‧‧‧Second Multiplexer

313a‧‧‧Band Pass Filter

313b‧‧‧Band Pass Filter

313c‧‧‧ Bandpass Filter

313d‧‧‧ Bandpass Filter

314a‧‧‧amplifier

314b‧‧‧amplifier

314c‧‧‧amplifier

314d‧‧‧amplifier

320‧‧‧Diversity RF Module

321‧‧‧Diversity RF Multiplexer

323a‧‧‧Band Pass Filter

323b‧‧‧ Bandpass Filter

323c‧‧‧Band Pass Filter

323d‧‧‧ Bandpass Filter

324a‧‧‧amplifier

324b‧‧‧amplifier

324c‧‧‧amplifier

324d‧‧‧amplifier

330‧‧‧ Transceiver

400‧‧‧Diversity receiver configuration

420‧‧‧Diversity RF Module

421‧‧‧Multiplexer

424‧‧‧wideband amplifier

500‧‧‧Diversity receiver configuration

501‧‧‧package substrate

502‧‧‧Diversity receiver controller

510‧‧‧Diversity receiver module

511‧‧‧The first multiplexer

512‧‧‧Second Multiplexer

513‧‧‧ Turn off the module filter / bandpass filter

514‧‧‧amplifier

519‧‧‧bypass switch

600‧‧‧Diversity receiver configuration

602‧‧‧Diversity receiver controller

610‧‧‧Diversity receiver module

616‧‧‧ matching circuit

617‧‧‧ adjustable output matching circuit

700‧‧‧Diversity receiver configuration

702‧‧‧Diversity receiver controller

710‧‧‧Diversity receiver module

712‧‧‧Output Multiplexer

735a‧‧‧ transmission line

735b‧‧‧ transmission line

801a‧‧‧input

801b‧‧‧input

801c‧‧‧input

801d‧‧‧input

802a‧‧‧ output

802b‧‧‧ output

803‧‧‧Control bus

812‧‧‧output multiplexer

820a‧‧‧Combiner

820b‧‧‧Combiner

830‧‧‧Single-pole / Single-throw switch

901a‧‧‧input

901b‧‧‧input

901c‧‧‧Enter

901d‧‧‧Enter

902a‧‧‧ output

902b‧‧‧ output

903‧‧‧Control bus

912‧‧‧Output Multiplexer

920a‧‧‧Combiner

920b‧‧‧Combiner

930a‧‧‧The first single-pole / multi-throw switch

930b‧‧‧Second Single-pole / Multi-throw Switch

1000‧‧‧Diversity receiver configuration

1002‧‧‧ Diversity Receiver Controller

1010‧‧‧Input Multiplexer

1011‧‧‧Input Multiplexer

1040a‧‧‧First antenna

1040b‧‧‧Second antenna

1101a‧‧‧Enter

1101b‧‧‧input

1102a‧‧‧Output

1102b‧‧‧ Output

1102c‧‧‧Output

1102d‧‧‧Output

1103‧‧‧Control bus

1111‧‧‧Output Multiplexer

1130‧‧‧Single-pole / single-throw switch

1201a‧‧‧Input

1201b‧‧‧Input

1202a‧‧‧Output

1202b‧‧‧ Output

1202c‧‧‧ Output

1202d‧‧‧Output

1203‧‧‧Control bus

1211‧‧‧Input Multiplexer

1230a‧‧‧The first multi-pole / single-throw switch

1230b‧‧‧Second multi-pole / single-throw switch

1310‧‧‧Diversity receiver module

1311‧‧‧High and low duplexer

1312‧‧‧Bipolar / Eight-throw Switch

1320‧‧‧Diversity receiver module

1321‧‧‧High and low duplexer

1322‧‧‧Bipolar / Eight-throw Switch

1323‧‧‧High and Low Combiner

1330‧‧‧Diversity receiver module

1331‧‧‧High and low duplexer

1332‧‧‧Three-pole / eight-throw switch

1340‧‧‧Diversity receiver module

1341‧‧‧High and Low Duplexer

1342‧‧‧Three-pole / eight-throw switch

1343‧‧‧High and Low Combiner

1350‧‧‧Diversity receiver module

1351‧‧‧High and Low Duplexer

1352‧‧‧Three-pole / eight-throw switch

1360‧‧‧Diversity Receiver Module

1361‧‧‧input selector

1362‧‧‧multi-pole / multi-throw switch / four-pole / ten-throw switch

1363‧‧‧Output selector

1400‧‧‧Method

1410‧‧‧block

1420‧‧‧block

1430‧‧‧block

1500‧‧‧Module

1502‧‧‧ package substrate

1504‧‧‧ Controller

1506‧‧‧Low Noise Amplifier Assembly

1508‧‧‧ matching components

1510‧‧‧Multiplexer Assembly

1512‧‧‧Filter Bank

1514‧‧‧SMT device

1600‧‧‧Wireless device

1601‧‧‧dotted frame / module

1602‧‧‧user interface

1604‧‧‧Memory

1606‧‧‧Power Management Components

1608‧‧‧fundamental frequency subsystem

1610‧‧‧ Transceiver

1611‧‧‧Diversity RF Module

1614‧‧‧Antenna switch

1616‧‧‧Main Antenna

1620‧‧‧ Power Amplifier

1622‧‧‧ Matching Circuit

1624‧‧‧Duplexer

1626‧‧‧Diversity antenna

1635‧‧‧Cable

FIG. 1 shows a wireless device having a communication module coupled to a main antenna and a diversity antenna.

Figure 2 shows a DRx configuration including a diversity receiver (DRx) front-end module (FEM).

FIG. 3 shows that in some embodiments, a diversity receiver (DRx) configuration may include a DRx module having multiple paths corresponding to multiple frequency bands.

Figure 4 shows that in some embodiments, a diversity receiver configuration may include Diversity RF module of amplifier with few receiver (DRx) modules.

FIG. 5 shows that in some embodiments, the diversity receiver configuration may include a DRx module coupled to a shutdown module filter.

FIG. 6 shows that in some embodiments, a diversity receiver configuration may include a DRx module with an adjustable matching circuit.

FIG. 7 shows that in some embodiments, a diversity receiver configuration may include multiple transmission lines.

FIG. 8 shows an embodiment of an output multiplexer that can be used for dynamic routing.

Figure 9 shows another embodiment of an output multiplexer that can be used for dynamic routing.

FIG. 10 shows that in some embodiments, a diversity receiver configuration may include multiple antennas.

FIG. 11 shows an embodiment of an input multiplexer that can be used for dynamic routing.

Figure 12 shows another embodiment of an input multiplexer that can be used for dynamic routing.

13A to 13F show various implementations of a DRx module with dynamic input routing and / or output routing.

FIG. 14 shows a flowchart representation of an embodiment of a method of processing RF signals.

FIG. 15 depicts a module having one or more features as described herein.

FIG. 16 depicts a wireless device having one or more of the features described herein.

The headings, if any, provided herein are for convenience only and do not necessarily affect the scope or meaning of the claimed invention.

FIG. 1 shows a wireless device 100 having a communication module 110 coupled to a main antenna 130 and a diversity antenna 140. The communication module 110 (and its constituent components) can be controlled by the controller 120. The communication module 110 includes a transceiver 112 configured to convert between analog radio frequency (RF) signals and digital data signals. To this end, the transceiver 112 may include a digital analog converter, an analog digital converter, a local oscillator for modulating or demodulating a fundamental frequency analog signal to a carrier frequency, or modulating or demodulating a fundamental frequency analog signal from a carrier frequency. , A baseband processor that converts between digital samples and data bits (for example, speech or other types of data), or other groups Pieces.

The communication module 110 further includes an RF module 114 coupled between the main antenna 130 and the transceiver 112. Since the RF module 114 may be physically close to the main antenna 130 to reduce attenuation due to cable loss, the RF module 114 may be referred to as a front-end module (FEM). The RF module 114 may process analog signals received from the main antenna 130 for the transceiver 112 or received from the transceiver 112 for transmission via the main antenna 130. To this end, the RF module 114 may include a filter, a power amplifier, a band selection switch, a matching circuit, and other components. Similarly, the communication module 110 includes a diversity RF module 116 coupled between the diversity antenna 140 and the transceiver 112 for similar processing.

When a signal is transmitted to a wireless device, the signal can be received at both the main antenna 130 and the diversity antenna 140. The main antenna 130 and the diversity antenna 140 may be physically separated so as to receive signals having different characteristics at the main antenna 130 and the diversity antenna 140. For example, in one embodiment, the main antenna 130 and the diversity antenna 140 can receive signals with different attenuation, noise, frequency response, or phase shift. The transceiver 112 may use two signals having different characteristics to determine a data bit corresponding to the signal. In some implementations, the transceiver 112 selects between the main antenna 130 and the diversity antenna 140 based on these characteristics, such as selecting the antenna with the highest signal-to-noise ratio. In some implementations, the transceiver 112 combines the signals from the main antenna 130 and the diversity antenna 140 to increase the signal-to-noise ratio of the combined signal. In some implementations, the transceiver 112 processes signals for multiple-input / multiple-output (MIMO) communication.

Since the diversity antenna 140 is physically separated from the main antenna 130, the diversity antenna 140 is coupled to the communication module 110 through a transmission line 135 such as a cable or a printed circuit board (PCB) trace. In some implementations, the transmission line 135 is lossy and attenuates the signal received at the diversity antenna 140 before it reaches the communication module 110. Therefore, in some implementations, as described below, a gain is applied to a signal received at the diversity antenna 140. Gain (and other analog processing, such as filtering) can be applied through the diversity receiver module. Since this diversity receiver module can be positioned physically close to the diversity antenna 140, it can be referred to as a diversity receiver front End module.

FIG. 2 shows a DRx configuration 200 including a diversity receiver (DRx) front-end module (FEM) 210. The DRx configuration 200 includes a diversity antenna 140 configured to receive a diversity signal and provide it to the DRx FEM 210. The DRx FEM 210 is configured to process the diversity signals received from the diversity antenna 140. For example, the DRx FEM 210 may be configured to filter the diversity signal to one or more active intermediate frequency bands, for example, as indicated by the controller 120. As another example, the DRx FEM 210 may be configured to amplify a diversity signal. To this end, the DRx FEM 210 may include filters, low noise amplifiers, band select switches, matching circuits, and other components.

The DRx FEM 210 transmits the processed diversity signal to a downstream module, such as a diversity RF (D-RF) module 116, via a transmission line 135, which feeds another processed diversity signal to the transceiver 112. The diversity RF module 116 (and, in some implementations, the transceiver) is controlled by the controller 120. In some implementations, the controller 120 may be implemented within the transceiver 112.

FIG. 3 shows that in some embodiments, a diversity receiver (DRx) configuration 300 may include a DRx module 310 having multiple paths corresponding to multiple frequency bands. The DRx configuration 300 includes a diversity antenna 140 configured to receive a diversity signal. In some implementations, the diversity signal may be a single-band signal including data modulated onto a single frequency band. In some implementations, the diversity signal may be a multi-band signal (also referred to as an inter-band carrier set signal) including data modulated onto multiple frequency bands.

The DRx module 310 has an input for receiving a diversity signal from the diversity antenna 140 and an output for providing the processed diversity signal to the transceiver 330 (via the transmission line 135 and the diversity RF module 320). The input of the DRx module 310 is fed into the input of the first multiplexer 311. The first multiplexer (MUX) 311 includes a plurality of multiplexer outputs, each corresponding to a path between an input and an output of the DRx module 310. Each of these paths may correspond to a respective frequency band. The output of the DRx module 310 is provided by the output of the second multiplexer 312. The second multiplexer 312 includes a plurality of multiplexer inputs, each of which corresponds to the path between the input and output of the DRx module 310 One of the trails.

The frequency band may be a honeycomb frequency band, such as a UMTS (Universal Mobile Telecommunications System) frequency band. For example, the first frequency band may be a UMTS downlink or "Rx" band 2 between 1930 megahertz (MHZ) and 1990 MHz, and the second frequency band may be a UMTS downlink between 869 MHz and 894 MHz or "Rx" band 5. Other downlink frequency bands may be used, such as those described in Table 1 below or other non-UMTS frequency bands.

In some implementations, the DRx module 310 includes a DRx controller 302 that receives signals from the controller 120 (also referred to as a communication controller) and selectively activates signals between input and output based on the received signals. One or more of the plurality of paths. In some implementations, the DRx module 310 does not include the DRx controller 302, and the controller 120 directly and selectively activates one or more of the plurality of paths.

As mentioned above, in some implementations, the diversity signal is a single-band signal. Therefore, in some implementations, the first multiplexer 311 is a single-pole / multi-throw (SPMT) switch that routes a diversity signal to a frequency band corresponding to a single-band signal in a plurality of paths based on a signal received from the DRx controller 302 One of them. The DRx controller 302 may generate a signal based on a band selection signal received by the DRx controller 302 from the communication controller 120. Similarly, in some implementations, the second multiplexer 312 is an SPMT switch that routes signals from one of a plurality of paths corresponding to a frequency band of a single-band signal based on a signal received from the DRx controller 302.

As mentioned above, in some implementations, the diversity signal is a multi-band signal. Therefore, in some implementations, the first multiplexer 311 is a signal splitter that routes a diversity signal to two or two of a plurality of paths corresponding to a multi-band signal based on a splitter control signal received from the DRx controller 302. Two or more of more than one frequency band. The function of the demultiplexer can be implemented as a SPMT switch, a duplexer filter, or some combination of these components. Similarly, in some implementations, the second multiplexer 312 is a signal combiner, which is based on a combiner control signal received from the DRx controller 302 to combine two or more of the multiple paths corresponding to the multi-band signal Signals in two or more bands. Signal combiner The function can be implemented as a SPMT switch, a duplexer filter, or some combination of these components. The DRx controller 302 may generate a splitter control signal and a combiner control signal based on a frequency band selection signal received by the DRx controller 302 from the communication controller 120.

Accordingly, in some implementations, the DRx controller 302 is configured to selectively activate one or more of the plurality of paths based on a band selection signal received by the DRx controller 302 (eg, from the communication controller 120). In some implementations, the DRx controller 302 is configured to selectively activate one or more of the plurality of paths by transmitting a splitter control signal to the demultiplexer and a combiner control signal to the signal combiner. .

The DRx module 310 includes a plurality of band-pass filters 313a to 313d. Each of the band-pass filters 313a to 313d is disposed along a corresponding one of the plurality of paths, and is configured to filter a signal received at the band-pass filter to a respective one of the plurality of paths. frequency band. In some implementations, the band-pass filters 313a-313d are further configured to filter the signals received at the band-pass filters to the downlink sub-bands of the respective frequency bands of one of the plurality of paths. The DRx module 310 includes a plurality of amplifiers 314a to 314d. Each of the amplifiers 314a to 314d is disposed along a corresponding one of the plurality of paths, and is configured to amplify a signal received at the amplifier.

In some implementations, the amplifiers 314a to 314d are narrow-band amplifiers configured to amplify signals in respective frequency bands of a path in which the amplifier is disposed. In some implementations, the amplifiers 314a-314d may be controlled by the DRx controller 302. For example, in some implementations, each of the amplifiers 314a-314d includes an enable / disable input and is enabled (or disabled) based on the received amplifier enable signal and the enable / disable input. The amplifier enable signal may be transmitted by the DRx controller 302. Thus, in some implementations, the DRx controller 302 is configured to be selective by transmitting an amplifier enable signal to one or more of the amplifiers 314a to 314d, respectively, disposed along one or more of a plurality of paths. Ground one or more of the plurality of paths. In such implementations, instead of being controlled by the DRx controller 302, the first multiplexer 311 may be for routing diversity signals to each of a plurality of paths. The signal splitter, and the second multiplexer 312 may be a signal combiner that combines signals from each of the plurality of paths. However, in the implementation where the DRx controller 302 controls the first multiplexer 311 and the second multiplexer 312, the DRx controller 302 can also enable (or disable) specific amplifiers 314a to 314d (for example) to save battery.

In some implementations, the amplifiers 314a to 314d are variable gain amplifiers (VGA). Therefore, in some implementations, the DRx module 310 includes a plurality of variable gain amplifiers (VGAs), each of which is disposed along a corresponding one of the plurality of paths, and is configured to be amplified at the VGA In the received signal, the VGA has a gain controlled by an amplifier control signal received from the DRx controller 302.

The gain of VGA can be bypassable, variable step size, continuously variable. In some implementations, at least one of the VGAs includes a fixed gain amplifier and a bypass switch controllable by an amplifier control signal. The bypass switch (in the first position) closes the line from the input of the fixed gain amplifier to the output of the fixed gain amplifier, allowing the signal to bypass the fixed gain amplifier. The bypass switch (in the second position) opens the line between the input and output, allowing the signal to pass through the fixed gain amplifier. In some implementations, when the bypass switch is in the first position, the fixed gain amplifier is disabled or otherwise reconfigured to accommodate the bypass mode.

In some implementations, at least one of the VGAs includes a variable step gain amplifier configured to amplify a signal received at the VGA, the VGA having one of a plurality of configured quantities indicated by an amplifier control signal Gain. In some implementations, at least one of the VGAs includes a continuously variable gain amplifier configured to amplify a signal received at the VGA having a gain proportional to the amplifier control signal.

In some implementations, the amplifiers 314a to 314d are variable current amplifiers (VCAs). The current drawn by the VCA can be bypassable, variable step size, and continuously variable. In some implementations, at least one of the VCAs includes a fixed current amplifier and a bypass switch controllable by an amplifier control signal. The bypass switch (in the first position) turns off the fixed current amplifier. The line between the input and the output of the fixed current amplifier, allowing the signal to bypass the fixed current amplifier. The bypass switch (in the second position) opens the line between the input and output, allowing the signal to pass through the fixed current amplifier. In some implementations, when the bypass switch is in the first position, the fixed current amplifier is disabled or otherwise reconfigured to accommodate the bypass mode.

In some implementations, at least one of the VCAs includes a variable step current amplifier that is configured to draw from one of a plurality of configured quantities indicated by an amplifier control signal. Current to amplify the signal received at the VCA. In some implementations, at least one of the VCAs includes a continuously variable current amplifier configured to amplify a signal received at the VCA by drawing a current proportional to the amplifier control signal.

In some implementations, the amplifiers 314a to 314d are fixed gain, fixed current amplifiers. In some implementations, the amplifiers 314a to 314d are fixed gain, variable current amplifiers. In some implementations, the amplifiers 314a to 314d are variable gain, fixed current amplifiers. In some implementations, the amplifiers 314a to 314d are variable gain, variable current amplifiers.

In some implementations, the DRx controller 302 generates an amplifier control signal based on a quality of service metric of an input signal received at an input. In some implementations, the DRx controller 302 generates an amplifier control signal based on a signal received from the communication controller 120, which in turn may be based on a quality of service (Qos) measurement of the received signal. The QoS metric of the received signal may be based at least in part on a diversity signal received on the diversity antenna 140 (eg, an input signal received at an input). The QoS metric of the received signal may be further based on the signal received on the primary antenna. In some implementations, the DRx controller 302 generates amplifier control signals based on the QoS metrics of the diversity signals without receiving signals from the communication controller 120.

In some implementations, the QoS metric includes signal strength. As another example, a QoS metric may include a bit error rate, data throughput, transmission delay, or any other QoS metric.

As mentioned above, the DRx module 310 has an input for receiving diversity signals from the diversity antenna 140 And provide the processed diversity signal to the output of the transceiver 330 (via the transmission line 135 and the diversity RF module 320). The diversity RF module 320 receives the processed diversity signal via the transmission line 135 and performs further processing. In detail, the processed diversity signals are separated or routed to one or more paths by the diversity RF multiplexer 321, and the separated or routed signals are filtered by the corresponding band-pass filters 323a to 323d on these paths and The amplifiers 324a to 324d are amplified. The output of each of the amplifiers 324a to 324d is provided to the transceiver 330.

The diversity RF multiplexer 321 can be controlled by the controller 120 (directly or via an on-chip diversity RF controller) to selectively activate one or more of the paths. Similarly, the amplifiers 324a to 324d may be controlled by the controller 120. For example, in some implementations, each of the amplifiers 324a-324d includes an enable / disable input and is enabled (or disabled) based on the amplifier enable signal. In some implementations, the amplifiers 324a to 324d are variable gain amplifiers (VGAs) that amplify signals received at the VGAs that have a diversity RF controller on the chip controlled by the controller 120 (or a chip controlled by the controller 120). ) The gain controlled by the received amplifier control signal. In some implementations, the amplifiers 324a to 324d are variable current amplifiers (VCAs).

Where the DRx module 310 added to the receiver chain already includes the diversity RF module 320, the number of bandpass filters in the DRx configuration 300 is doubled. Therefore, in some implementations, the band-pass filters 323a to 323d are not included in the diversity RF module 320. In fact, the band-pass filters 313a to 313d of the DRx module 310 are used to reduce the strength of the out-of-band blocker. In addition, the automatic gain control (AGC) table of the diversity RF module 320 may be shifted to reduce the amount of gain provided by the amplifiers 324a to 324d of the diversity RF module 320 to the gain provided by the amplifiers 314a to 314d of the DRx module 310. the amount.

For example, if the DRx module gain is 15dB and the receiver sensitivity is -100dBm, the diversity RF module 320 will reach a sensitivity of -85dBm. If the closed-loop AGC of the diversity RF module 320 is active, its gain will automatically drop by 15dB. However, both the signal component and the out-of-band blocker are amplified by 15 dB on reception. Therefore, 15dB of diversity RF module 320 The decrease in gain can be accompanied by a 15dB increase in its linearity. In detail, the amplifiers 324a to 324d of the diversity RF module 320 may be designed so that the linearity of the amplifier increases with decreasing gain (or increasing current).

In some implementations, the controller 120 controls the gain (and / or current) of the amplifiers 314a to 314d of the DRx module 310 and the amplifiers 324a to 324d of the diversity RF module 320. As in the above example, in response to increasing the amount of gain provided by the amplifiers 314a to 314d of the DRx module 310, the controller 120 may reduce the amount of gain provided by the amplifiers 324a to 324d of the diversity RF module 320. Therefore, in some implementations, the controller 120 is configured to generate downstream amplifier control signals (amplifiers 324a to 324d for the diversity RF module 320) based on the amplifier control signals (the amplifiers 314a to 314d for the DRx module 310) To control the gain of one or more downstream amplifiers 324a to 324d coupled to the output (of the DRx module 310) via the transmission line 135. In some implementations, the controller 120 also controls the gain of other components of the wireless device, such as amplifiers in a front-end module (FEM), based on the amplifier control signals.

As mentioned above, in some implementations, the band-pass filters 323a to 323d are not included. Therefore, in some implementations, at least one of the downstream amplifiers 324a to 324d is coupled to the output (of the DRx module 310) via the transmission line 135 without passing through a downstream band-pass filter.

FIG. 4 shows that in some embodiments, a diversity receiver configuration 400 may include a diversity RF module 420 having fewer amplifiers than a diversity receiver (DRx) module 310. The diversity receiver configuration 400 includes a diversity antenna 140 and a DRx module 310 as described above with respect to FIG. 3. The output of the DRx module 310 is transmitted to the diversity RF module 420 via the transmission line 135. The diversity RF module is different from the diversity RF module 320 of FIG. 3 because the diversity RF module 420 of FIG. 4 includes less than the DRx module 310 Amplifier.

As mentioned above, in some implementations, the diversity RF module 420 does not include a band-pass filter. Therefore, in some implementations, one or more of the amplifiers 424 of the diversity RF module 420 need not be band-specific. In detail, the diversity RF module 420 may include one or more paths that are not mapped one-to-one with the paths of the DRx module 310, and each path includes an amplifier 424. this The mapping of the paths (or corresponding amplifiers) may be stored in the controller 120.

Therefore, although the DRx module 310 includes several paths each corresponding to a frequency band, the diversity RF module 420 may include one or more paths that do not correspond to a single frequency band.

In some implementations (as shown in FIG. 4), the diversity RF module 420 includes a single wideband amplifier 424 that amplifies a signal received from the transmission line 135 and outputs the amplified signal to a multiplexer 421. The multiplexer 421 includes a plurality of multiplexer outputs, each corresponding to a respective frequency band. In some implementations, the diversity RF module 420 does not include any amplifiers.

In some implementations, the diversity signal is a single-band signal. Therefore, in some implementations, the multiplexer 421 is an SPMT switch that routes a diversity signal to one of a plurality of outputs corresponding to a frequency band of a single-band signal based on a signal received from the controller 120. In some implementations, the diversity signal is a multi-band signal. Therefore, in some implementations, the multiplexer 421 is a signal splitter that routes the diversity signal to two or more of the plurality of outputs corresponding to the multi-band signal based on the splitter control signal received from the controller 120. Two or more of the frequency bands. In some implementations, the diversity RF module 420 may be combined with the transceiver 330 as a single module.

In some implementations, the diversity RF module 420 includes multiple amplifiers, each corresponding to a set of frequency bands. The signal from the transmission line 135 may be fed into a band splitter that outputs a high frequency to a high frequency amplifier along a first path and a low frequency to a low frequency amplifier along a second path. The output of each of the amplifiers may be provided to a multiplexer 421 configured to route a signal to a corresponding input of the transceiver 330.

FIG. 5 shows that in some embodiments, the diversity receiver configuration 500 may include a DRx module 510 coupled to a shutdown module filter 513. The DRx module 510 may include a package substrate 501 configured to receive a plurality of components and a receiving system implemented on the package substrate 501. The DRx module 510 may include one or more signal paths that are routed away from the DRx module 510 and may be used by a system integrator, designer, or manufacturer to support filters for any desired frequency band.

The DRx module 510 includes several paths between the input and output of the DRx module 510. The DRx module 510 includes a bypass path between the input and output that is activated by a bypass switch 519 controlled by the DRx controller 502. Although FIG. 5 illustrates a single bypass switch 519, in some implementations, the bypass switch 519 may include multiple switches (e.g., a first switch disposed as physically close to an input and a second switch disposed as physically close to an output ). As shown in Figure 5, the bypass path does not include a filter or amplifier.

The DRx module 510 includes a plurality of multiplexer paths, and the multiplexer paths include a first multiplexer 511 and a second multiplexer 512. The multiplexer path includes several turn-on module paths. The turn-on module paths include a first multiplexer 511, band-pass filters 313a to 313d implemented on the package substrate 501, and amplifiers 314a to 314a to 314d and the second multiplexer 512. The multiplexer path includes one or more closed module paths. The closed module paths include a first multiplexer 511, a band-pass filter 513 implemented away from the package substrate 501, an amplifier 514, and a second multiplexer 512. The amplifier 514 may be a broadband amplifier implemented on the packaging substrate 501 or may be implemented remotely from the packaging substrate 501. As described above, the amplifiers 314a to 314d and the amplifier 514 may be variable gain amplifiers and / or variable current amplifiers.

The DRx controller 502 is configured to selectively activate one or more of a plurality of paths between input and output. In some implementations, the DRx controller 502 is configured to selectively activate one or more of the plurality of paths based on a band selection signal received by the DRx controller 502 (eg, from a communication controller). The DRx controller 502 may selectively activate a path by, for example, turning on or off the bypass switch 519, enabling or disabling amplifiers 314a to 314d, amplifier 514, controlling multiplexers 511, 512, or via other mechanisms. For example, the DRx controller 502 may follow a path (e.g., the path between filters 313a to 313d, filter 513 and amplifiers 314a to 314d, amplifier 514) or by setting the gain of amplifiers 314a to 314d, amplifier 514 Is essentially 0 to turn the switch on or off.

FIG. 6 shows that in some embodiments, a diversity receiver configuration 600 may include a DRx module 610 with an adjustable matching circuit. In detail, the DRx module 610 may include One or more adjustable matching circuits at one or more of the inputs and outputs of the group 610.

It is unlikely that multiple frequency bands received on the same diversity antenna 140 will achieve ideal impedance matching. To match each frequency band using a compact matching circuit, an adjustable input matching circuit 616 may be implemented at the input of the DRx module 610 and controlled by the DRx controller 602 (eg, based on a band selection signal from a communication controller). The DRx controller 602 may tune the adjustable input matching circuit 616 based on a lookup table that associates a frequency band (or a set of frequency bands) with a tuning parameter. The adjustable input matching circuit 616 may be an adjustable T circuit, an adjustable PI circuit, or any other adjustable matching circuit. In detail, the adjustable input matching circuit 616 may include one or more variable components such as resistors, inductors, and capacitors. The variable components may be connected in parallel and / or in series, and may be connected between the input of the DRx module 610 and the input of the first multiplexer 311 or may be connected between the input of the DRx module 610 and a ground voltage.

Similarly, in the case where only one transmission line 135 (or at least few cables) carries signals of many frequency bands, it is impossible to achieve ideal impedance matching for multiple frequency bands. To match each frequency band using a compact matching circuit, an adjustable output matching circuit 617 may be implemented at the output of the DRx module 610 and controlled by the DRx controller 602 (eg, based on a band selection signal from a communication controller). The DRx controller 602 may tune the adjustable output matching circuit 617 based on a lookup table that associates a frequency band (or a set of frequency bands) with a tuning parameter. The adjustable output matching circuit 617 may be an adjustable T circuit, an adjustable PI circuit, or any other adjustable matching circuit. In detail, the adjustable output matching circuit 617 may include one or more variable components such as a resistor, an inductor, and a capacitor. The variable components may be connected in parallel and / or in series and may be connected between the output of the DRx module 610 and the output of the second multiplexer 312 or may be connected between the output of the DRx module 610 and the ground voltage.

FIG. 7 shows that in some embodiments, a diversity receiver configuration 700 may include multiple transmission lines. Although FIG. 7 illustrates an embodiment having two transmission lines 735a to 735b and one antenna 140, the aspects described herein may be implemented with two or more transmission lines and / or (as described further below) two or more antennas. Implemented in the examples.

The diversity receiver configuration 700 includes a DRx module 710 coupled to the antenna 140. The DRx module 710 includes an input of the DRx module 710 (for example, an input coupled to the antenna 140a) and an output of the DRx module (for example, a first output coupled to the first transmission line 735a or a second transmission line 735b (The second output). In some implementations, the DRx module 710 includes one or more bypass paths (not shown) between the input and output that are activated by one or more bypass switches controlled by the DRx controller 702.

The DRx module 710 includes a plurality of multiplexer paths. The multiplexer paths include an input multiplexer 311 and an output multiplexer 712. The multiplexer path includes several enabled module paths (shown), which include an input multiplexer 311, band-pass filters 313a to 313d, amplifiers 314a to 314d, and an output multiplexer 712. The multiplexer path may include one or more closed module paths (not shown) as described above. As also described above, the amplifiers 314a to 314d may be variable gain amplifiers and / or variable current amplifiers.

The DRx controller 702 is configured to selectively activate one or more of the plurality of paths. In some implementations, the DRx controller 702 is configured to selectively activate one or more of the plurality of paths based on a band selection signal received by the DRx controller 702 (eg, from a communication controller). The DRx controller 702 can selectively initiate paths, for example, by enabling or disabling amplifiers 314a to 314d, controlling multiplexers 311, 712, or via other mechanisms described above.

To make better use of the plurality of transmission lines 735a to 735b, the DRx controller 702 may control the output multiplexer 712 based on the band selection signal to route each of the signals propagating along the path to the selected one of the transmission lines 735a to 735b ( Or output multiplexer outputs corresponding to the transmission lines 735a to 735b).

In some implementations, if the band selection signal indicates that the received signal includes a single frequency band, the DRx controller 702 may control the output multiplexer 712 to route a signal propagating on a corresponding path to a preset transmission line. The preset transmission line may be the same for all paths (and corresponding frequency bands), such as when one of transmission lines 735a to 735b is shorter, introduces less noise, or His way is better. The preset transmission line may be different for different paths. For example, a path corresponding to a low frequency band may be routed to a first transmission line 735b, and a path corresponding to a high frequency band may be routed to a second transmission line 735b.

Thus, in response to indicating that the one or more RF signals received at the input multiplexer 311 include a frequency band selection signal of a single frequency band, the DRx controller 702 may be configured to control the second multiplexer 712 to respond to the The amplified RF signal received at the output multiplexer input of the frequency band is routed to the preset output multiplexer output. As mentioned above, the preset output multiplexer output can be different for different single frequency bands or the same for all frequency bands.

In some implementations, if the band selection signal indicates that the received signal includes two frequency bands, the DRx controller 702 may control the output multiplexer 712 to route a signal traveling along a path corresponding to the first frequency band to the first transmission line 735a and A signal propagating along a path corresponding to the second frequency band is routed to the second transmission line 735b. Therefore, even if both frequency bands are high frequency bands (or low frequency bands), signals propagating along corresponding paths can still be routed to different transmission lines. Similarly, in the case of three or more transmission lines, each of the three or more frequency bands may be routed to a different transmission line.

Therefore, in response to indicating that the one or more RF signals received at the input multiplexer 311 include a frequency band selection signal of the first frequency band and the second frequency band, the DRX controller 702 may be configured to control the second multiplexer 712 to The amplified RF signal received at the output multiplexer input corresponding to the first frequency band is routed to the first output multiplexer output and the amplified RF signal received at the output multiplexer input corresponding to the second frequency band is routed To the second output multiplexer output. As described above, both the first frequency band and the second frequency band may be a high frequency band or a low frequency band.

In some implementations, if the frequency band selection signal indicates that the received signal includes three frequency bands, the DRx controller 702 may control the output multiplexer 712 to combine two of the signals that propagate along two paths corresponding to both of the frequency bands And route the combined signal along one of the transmission lines and route the signal along a path corresponding to the third frequency band along the other of the transmission lines. In some implementations, the DRx controller 702 controls the output multiplexer 712 to combine three frequencies The closest two of the bands (for example, two low frequency bands or two high frequency bands). Such implementations can simplify impedance matching at the output of the DRx module 710 or at the input of a downstream module. In some implementations, the DRx controller 702 controls the output multiplexer 712 to combine the two farthest of the three frequency bands. Such implementations can simplify the separation of frequency bands at downstream modules.

Therefore, in response to indicating that the one or more RF signals received at the input multiplexer 311 include a frequency band selection signal of the first frequency band, the second frequency band, and the third frequency band, the DRx controller 702 may be configured to control the second frequency band. The multiplexer 712 (a) combines the amplified RF signal received at the input of the output multiplexer corresponding to the first frequency band and the amplified RF signal received at the input of the output multiplexer corresponding to the second frequency band to generate a combined signal. , (B) routes the combined signal to the output of the first output multiplexer, and (c) routes the amplified RF signal received at the input of the output multiplexer corresponding to the third frequency band to the output of the second output multiplexer . As described above, the first frequency band and the second frequency band may be the closest or the farthest of the three frequency bands.

In some implementations, if the frequency band selection signal indicates that the received signal includes four frequency bands, the DRx controller 702 may control the output multiplexer 712 to combine two of the signals that travel along two paths corresponding to both of the frequency bands And route the first combined signal along one of the transmission lines, and route both of the signals that travel along two paths corresponding to the other two in the frequency band, and route the second combined signal along the other of the transmission lines. In some implementations, the DRx controller 702 may control the output multiplexer 712 to combine three of the signals propagating along three paths corresponding to three of the frequency bands, and route the combined signal along one of the transmission lines, and Others in the transmission line route signals that travel along a path corresponding to the fourth frequency band. This implementation may be beneficial when three of the frequency bands are close to each other (e.g., all low frequency bands) and the fourth frequency band is far apart (e.g., high frequency bands).

In general, if the band selection signal indicates that the received signal includes more frequency bands than the existing transmission line, the DRx controller 702 can control the output multiplexer 712 to combine two corresponding to two or more of the frequency bands. Or two or more of the signals propagating through two or more paths, and the combined signal is routed to one of the transmission lines. DRx controller 702 The output multiplexer 712 can be controlled to combine the closest or farthest frequency band.

Therefore, signals propagating along one of the paths may be routed by the output multiplexer 712 to different ones of the transmission lines depending on other signals propagating along the other paths. As an example, a signal propagating along a third path through the third amplifier 314c may be routed to the second transmission line 735b when the third path is the only active path, and may be on the fourth path (through the fourth amplifier 314d) It is also routed to the first transmission line 735a (and to the second transmission line 735b) when active.

Therefore, the DRx controller 702 may be configured to control the output multiplexer 712 to route the amplified RF signal received at the input of the output multiplexer to the output of the first output multiplexer in response to the first frequency band selection signal, and In response to the second frequency band selection signal, the control output multiplexer routes the amplified RF signal received at the input of the output multiplexer to the output of the second output multiplexer.

Therefore, the DRx module 710 constitutes a receiving system including a plurality of amplifiers 314a to 314d, and each of the plurality of amplifiers 314a to 314d is along the input of the receiving system (for example, the DRx module 710 is coupled to the antenna 140 Inputs, and / or additional inputs of DRx module 710 coupled to other antennas, and outputs of the receiving system (eg, outputs of DRx module 710 coupled to transmission lines 735a to 735b, and / or DRx modules Correspondence in a plurality of paths between 710 (extra output coupled to other transmission lines). Each of the amplifiers 314a to 314d is configured to amplify an RF signal received at the amplifiers 314a to 314d.

The DRx module 710 further includes an input multiplexer 311 configured to receive one or more RF signals at one or more input multiplexer inputs, and to combine one of the one or more RF signals. Each is output to one or more of the plurality of input multiplexer outputs to propagate along a respective one or more of the plurality of paths. In some implementations, the DRx module 710 receives a single RF signal at a single-input multiplexer input, and is controlled by the DRx controller 702 to output a single RF signal to the input multiplexer output corresponding to a band selection signal One or more of each frequency band indicated in. In some implementations, the DRx module 710 receives multiple RF signals (each corresponding to a different set of one or more frequency bands indicated in the band selection signal) at multiple input multiplexer inputs, and is controlled by DRx The processor 702 controls to output each of the plurality of RF signals to one or more of the set of one or more frequency bands in the input multiplexer output corresponding to the respective RF signals. Therefore, in general, the input multiplexer 311 receives one or more RF signals, each corresponding to one or more frequency bands, and is controlled by the DRx controller to follow one of the one or more frequency bands corresponding to the RF signal. Or multiple paths route each RF signal.

The DRx module 710 further includes an output multiplexer 712 configured to receive one propagated along one or more of a plurality of paths at one or more respective output multiplexer inputs. Or more amplified RF signals and outputting each of the one or more amplified RF signals to a plurality of output multiplexer outputs (each of which is respectively coupled to one of a plurality of output transmission lines 735a to 735b ).

The DRx module 710 further includes a DRx controller 702 configured to receive a band selection signal and control an input multiplexer and an output multiplexer based on the band selection signal. As described above, the DRx controller 702 controls the input multiplexer to route each of the one or more RF signals corresponding to one or more frequency bands along one or more paths corresponding to one or more frequency bands of the RF signal. . As also described above, the DRx controller 702 controls the output multiplexer to route each of the one or more amplified RF signals traveling along one or more paths to a selected one of the plurality of output multiplexer outputs. This makes better use of the transmission lines 735a to 735b coupled to the DRx module 710.

In some implementations, if the frequency band selection signal indicates that the received signal includes multiple frequency bands, the DRx controller 702 may control the output multiplexer 712 to combine all signals propagating along a path corresponding to the multiple frequency bands and route the combined signal to One of the transmission lines. Such implementations can be used when other transmission lines are unavailable (e.g., damaged or not present in a particular wireless communication configuration), and in response to being received by the DRx controller 702 (e.g., from a communication controller) A controller signal (ie, one of the transmission lines is not available) may implement such implementation.

Therefore, in response to an instruction to receive one or more RF signals at the input multiplexer 311 including a frequency band selection signal of multiple frequency bands and to a controller signal indicating that a transmission line is unavailable, the DRx controller 702 may be configured to control The output multiplexer 712 combines a plurality of amplified RF signals received at a plurality of output multiplexer inputs corresponding to a plurality of frequency bands to generate a combined signal and routes the combined signal to an output multiplexer output.

FIG. 8 shows an embodiment of an output multiplexer 812 that can be used for dynamic routing. The output multiplexer 812 includes a plurality of inputs 801a to 801d, which can be respectively coupled to amplifiers arranged along a plurality of paths corresponding to a plurality of frequency bands. The output multiplexer 812 includes a plurality of outputs 802a to 802b, and the outputs can be respectively coupled to a plurality of transmission lines. Each of the outputs 802a to 802b is coupled to the output of a respective combiner 820a to 820b. Each of the inputs 801a-801d is coupled to the input of each of the combiners 820a-820b via one of a set of single-pole / single-throw (SPST) switches 830. The switch 830 can be controlled via a control bus 803 which can be coupled to a DRx controller.

FIG. 9 shows another embodiment of an output multiplexer 912 that can be used for dynamic routing. The output multiplexer 912 includes a plurality of inputs 901a to 901d, which can be respectively coupled to amplifiers disposed along a plurality of paths corresponding to a plurality of frequency bands. The output multiplexer 912 includes a plurality of outputs 902a to 902b, and the outputs can be respectively coupled to a plurality of transmission lines. Each of the outputs 902a-902b is coupled to the output of a respective combiner 920a-920b. The first input 901a is coupled to the input of the first combiner 920a, and the fourth input 901d is coupled to the input of the second combiner 920d. The second input 901b is coupled to a first unipolar / multiple-throw (SPMT) switch 930a having an output coupled to each of the combiners 920a to 920b. Similarly, the third input 901c is coupled to a second SPMT switch 930b having an output coupled to each of the combiners 920a to 920b. The switches 930a to 930b can be controlled via a control bus 903 which can be coupled to a DRx controller.

Unlike the output multiplexer 812 of FIG. 8, the output multiplexer 912 of FIG. 9 does not allow Each input 901a to 901d is routed to any one of the outputs 902a to 902b. The truth is that the first input 901a is fixedly routed to the first output 902a, and the fourth input 902d is fixedly routed to the second output 902b. This implementation can reduce the size of the control bus 903 or simplify the control logic of the DRx controller attached to the control bus 903.

The output multiplexer 812 of FIG. 8 and the output multiplexer 912 of FIG. 9 both include first combiners 820a and 920a coupled to the first output multiplexer outputs 802a and 902a and coupled to the second output multiplexer. The second combiner 820b, 920b outputs 802b, 902b. In addition, the output multiplexer 812 of FIG. 8 and the output multiplexer 912 of FIG. 9 both include one or more switches (controlled by a DRx controller) coupled to the first combiner 820a, 920a and the second combiner The output multiplexer inputs of 820b and 920b are 801b and 901b. In the output multiplexer 812 of FIG. 8, the output multiplexer input 801 b is coupled to the first combiner 820 a and the second combiner 820 b via two SPST switches. In the output multiplexer 912 of FIG. 9, the output multiplexer input 901b is coupled to the first combiner 920a and the second combiner 820b via a single SPMT switch.

FIG. 10 shows that in some embodiments, a diversity receiver configuration 1000 may include multiple antennas 1040a to 1040b. Although FIG. 10 illustrates an embodiment having one transmission line 135 and two antennas 1040a to 1040b, the aspects described herein may be implemented in an embodiment having two or more transmission lines and / or more than two antennas.

The diversity receiver configuration 1000 includes a DRx module 1010 coupled to a first antenna 1040a and a second antenna 1040b. The DRx module 1010 includes an input of the DRx module 1010 (for example, a first input coupled to the first antenna 1040a or a second input of a second antenna 1040b) and an output of the DRx module (for example, a coupling To the transmission line 135). In some implementations, the DRx module 1010 includes one or more bypass paths (not shown) between inputs and outputs that are activated by one or more bypass switches controlled by the DRx controller 1002.

The DRx module 1010 includes a plurality of multiplexer paths. The multiplexer paths include an input multiplexer 1011 and an output multiplexer 312. The multiplexer path includes several enabled module paths (shown). These enabled module paths include the input multiplexer 1011, the band-pass filter 313a to 313d, amplifiers 314a to 314d, and output multiplexer 312. The multiplexer path may include one or more closed module paths (not shown) as described above. As also described above, the amplifiers 314a to 314d may be variable gain amplifiers and / or variable current amplifiers.

The DRx controller 1002 is configured to selectively activate one or more of the plurality of paths. In some implementations, the DRx controller 1002 is configured to selectively activate one or more of the plurality of paths based on a band selection signal received by the DRx controller 1002 (eg, from a communication controller). The DRx controller 1002 can selectively activate paths, for example, by enabling or disabling amplifiers 314a to 314d, controlling multiplexers 1011, 312, or via other mechanisms as described above.

In various diversity receiver configurations, antennas 1040a to 1040b can support various frequency bands. For example, in one implementation, the diversity receiver configuration may include a first antenna 1040a that supports low and medium frequency bands and a second antenna 1040b that supports high frequency bands. Another diversity receiver configuration may include a first antenna 1040a supporting low frequency bands and a second antenna 1040b supporting mid frequency and high frequency bands. Another diversity receiver configuration may include only a first wideband antenna 1040a that supports low-band, mid-band, and high-band and may lack a second antenna 1040b.

Controlled by DRx based on antenna configuration signals (e.g. configuration signals received from a communication controller or stored in permanent memory or other fixed-line configuration and read from permanent memory or other fixed-line configuration) The controller 1002 controls the input multiplexer 1011, and the same DRx module 1010 can be used for all such diversity receiver configurations.

In some implementations, when the antenna configuration signal indicates that the diversity receiver configuration 1000 includes only a single antenna 1040a, the DRx controller 1002 may control the input multiplexer to route signals received at a single antenna 1040a to all paths (or (All active paths as indicated by the band selection signal).

Therefore, in response to an antenna configuration signal indicating that the diversity receiver configuration includes a single antenna, the DRx controller 1002 can be configured to control the input multiplexer to operate at a single input multiplexer. The RF signal received at the input of the multiplexer is routed to all of the plurality of input multiplexer outputs or to all of the plurality of input multiplexer outputs associated with one or more frequency bands of the RF signal.

In some implementations, when the antenna configuration signal indicates that the diversity receiver configuration 1000 includes a first antenna 1040a that supports low frequency bands and a second antenna 1040b that supports middle and high frequency bands, the DRx controller 1002 may control the input multiplier. The worker 1011 routes the signal received at the first antenna 1040a to the first path (including the first amplifier 314a) and routes the signal received at the second antenna 1040b to the second path (including the second amplifier 314b ), The third path (including the third amplifier 314c) and the fourth path (including the fourth amplifier 314d), or at least those paths that are active as indicated by the band selection signal.

In some implementations, when the antenna configuration signal indicates that the diversity receiver configuration 1000 includes a first antenna 1040a that supports low frequency bands and lower intermediate frequency bands and a second antenna 1040b that supports higher frequency bands and higher frequency bands, DRx control The multiplexer 1002 can control the input multiplexer 1011 to route the signal received at the first antenna 1040a to the first path and the second path and to route the signal received at the second antenna 1040b to the third path and the fourth path. , Or at least their active paths are indicated by a band selection signal.

In some implementations, when the antenna configuration signal indicates that the diversity receiver configuration 1000 includes a first antenna 1040a supporting low-band and mid-band and a second antenna 1040b supporting high-band, the DRx controller 1002 may control the input multiplier. The worker 1011 routes the signal received at the first antenna 1040a to the first path, the second path, and the third path and routes the signal received at the second antenna 1040b to the fourth path, or at least as a frequency band. The selection signal indicates which path is active.

Therefore, depending on the diversity receiver configuration (as indicated by the antenna configuration signal), the input multiplexer 1011 can be routed from a different one of the input multiplexer inputs (coupled to one of the antennas 1040a to 1040b). A signal traveling along a specific path (eg, a third path).

Therefore, the DRx controller 1002 may be configured to control the input multiplexer 1011 in response to the first antenna configuration signal to route the RF signal received at the input of the first input multiplexer to the output. Input multiplexer output, and in response to the second antenna configuration signal controlling the input multiplexer 1011 to route the RF signal received at the input of the second input multiplexer to the input multiplexer output.

In general, the DRx controller 1002 may be configured to control the input multiplexer 1011 to route received signals along a path corresponding to one or more frequency bands (each including one or more frequency bands). In some implementations, the input multiplexer 1011 may further act as a band splitter that outputs each of the one or more frequency bands along a path corresponding to the one or more frequency bands. As an example, the input multiplexer 1011 and the band-pass filters 313a to 313d constitute this band splitter. In other implementations (as described further below), the band-pass filters 313a to 313d and the input multiplexer 1011 may be integrated in other ways to form a band splitter.

FIG. 11 shows an embodiment of an input multiplexer 1111 that can be used for dynamic routing. The input multiplexer 1111 includes a plurality of inputs 1101a to 1101b which can be respectively coupled to one or more antennas. The input multiplexer 1111 includes a plurality of outputs 1102a to 1102d, which may be respectively coupled to amplifiers (eg, via a band-pass filter) disposed along a plurality of paths corresponding to a plurality of frequency bands. Each of the inputs 1101a to 1101b is coupled to each of the outputs 1102a to 1102d via one of a set of single-pole / single-throw (SPST) switches 1130. The switch 1130 can be controlled via a control bus 1103 which can be coupled to a DRx controller.

FIG. 12 shows another embodiment of an input multiplexer 1211 that can be used for dynamic routing. The input multiplexer 1211 includes a plurality of inputs 1201a to 1201b which can be respectively coupled to one or more antennas. The input multiplexer 1211 includes a plurality of outputs 1202a to 1202d, which can be respectively coupled to amplifiers (eg, via a band-pass filter) disposed along a plurality of paths corresponding to a plurality of frequency bands. The first input 1201a is coupled to the first output 1202a, the first multi-pole / single-throw (MPST) switch 1230a, and the second MPST switch 1230b. The second input 1201b is coupled to the first MPST switch 1230a, the second MPST switch 1230b, and the fourth output 1202d. The switches 1230a to 1230b can be controlled via a control bus 1203 which can be coupled to a DRx controller.

Unlike the input multiplexer 1111 of FIG. 11, the input multiplexer 1211 of FIG. 12 is not allowed Each input 1201a to 1201b is routed to any of the outputs 1202a to 1202d. The truth is that the first input 1201a is fixedly routed to the first output 1202a, and the second input 1201b is fixedly routed to the fourth output 1202d. This implementation can reduce the size of the control bus 903 or simplify the control logic of the DRx controller attached to the control bus 903. However, based on the antenna configuration signal, the DRx controller can control the switches 1230a to 1230b to route signals from any of the inputs 1201a to 1201b to the second output 1202b and / or the third output 1202c.

Both the input multiplexer 1111 of FIG. 11 and the input multiplexer 1211 of FIG. 12 operate as a multi-pole / multi-throw (MPMT) switch. In some implementations, the input multiplexers 1111, 1211 include filters or matching components to reduce insertion loss. Such filters or matching components can be co-designed as other components with DRx modules (eg, bandpass filters 313a to 313d of FIG. 10). For example, the input multiplexer and band-pass filter can be integrated into a single part to reduce the number of all components. As another example, an input multiplexer can be designed for a specific output impedance (eg, impedance other than 50 ohms), and a band-pass filter can be designed to match this impedance.

13A to 13F show various implementations of a DRx module with dynamic input routing and / or output routing. FIG. 13A shows that in some embodiments, the DRx module 1310 may include a single input and two outputs. The DRx module 1310 includes a high-low duplexer 1311 that separates an input signal into a low frequency band and a middle-high frequency band as a band splitter 1311, a bipolar / octal-throw switch 1312 (implemented as a first unipolar / three-throw switch and a 2 single-pole / five-throw switches) and various filters and frequency band splitting duplexers. As described above, the high-low duplexer 1311 and various filters and band-separated duplexers can be designed together.

FIG. 13B shows that in some embodiments, the DRx module 1320 may include a single input and a single output. The DRx module 1320 includes a high-low duplexer 1321 that separates the input signal into a low frequency band and a middle-high frequency band as a band splitter 1321, a bipolar / octal-throw switch 1322 (implemented as a first unipolar / three-throw switch and (Two single-pole / five-throw switch) and various filters and frequency band split duplex Device. As described above, the high-low duplexer 1321 and various filters and band-separated duplexers can be designed together. The DRx module 1320 includes a high-low combiner 1323 that functions as a filter of an output multiplexer and combines signals received at two inputs and outputs the combined signal.

FIG. 13C shows that in some embodiments, the DRx module 1330 may include two inputs and three outputs. The DRx module 1330 includes a high-low duplexer 1331, a three-pole / octal-throw switch 1332 (implemented as a first single-pole / three-throw switch, and a first Two single-pole / double-throw switches and third single-pole / three-throw switches) and various filters and band-separating duplexers. As described above, the high-low duplexer 1331 and various filters and band-separated duplexers can be designed together.

FIG. 13D shows that in some embodiments, the DRx module 1340 may include two inputs and two outputs. The DRx module 1340 includes a band splitter that separates the input signal into low-band and mid-high band high-low duplexers 1341, three-pole / octal-throw switch 1342 (implemented as a first single-pole / three-throw switch and second Single-pole / double-throw switch and third single-pole / three-throw switch) and various filters and band-splitting duplexers. As described above, the high-low duplexer 1341 and various filters and band-separated duplexers can be designed together. The DRx module 1340 includes a high and low combiner 1343 that is a part of an output multiplexer that filters and combines signals received at two inputs and outputs the combined signal.

FIG. 13E shows that in some embodiments, the DRx module 1350 may include a multi-pole / multi-throw switch 1352. The DRx module 1340 includes a high-low duplexer 1351, a three-pole / octal-throw switch 1352, which separates an input signal into a low-frequency band and a middle-high-frequency band as a band splitter, and various filters and band-splitting duplexers. As described above, the high-low duplexer 1351 and various filters and band-separated duplexers can be designed together. The three pole / eight throw switch 1352 is implemented as a first single pole / three throw switch and a second double pole / five throw switch for routing the signal received on the first pole to one of the five throw points And for routing the signal received on the second pole to one of the three throw points.

FIG. 13F shows that in some embodiments, the DRx module 1360 may include an input selector 1361 and multi-pole / multi-throw switch 1362. The DRx module 1360 includes an input selector 1361 as a band splitter (which operates as a bipolar / four-throw switch and can be implemented as shown in Figures 11 and 12), a four-pole / ten-throw switch 1362, and various filters Filters, matching components, and band-separating duplexers. As described above, the input selector 1361, the switch 1362, and various filters, matching components, and a frequency band splitting duplexer can be designed together. The input selector 1361 and the switch 1362 operate together as a bipolar / ten-throw switch. The DRx module 1360 includes an output selector 1363 as an output multiplexer that can route an input to a selected one of the outputs (which can include a combined signal). The output selector 1363 can be implemented using the patterns shown in FIGS. 8 and 9.

FIG. 14 shows a flowchart representation of an embodiment of a method of processing RF signals. In some implementations (and detailed below as an example), the method 1400 is performed by a controller, such as the DRx controller 702 of FIG. 7 or the communication controller 120 of FIG. 3. In some implementations, the method 1400 is performed by processing logic including hardware, firmware, software, or a combination thereof. In some implementations, the method 1400 is performed by a processor executing code stored in a non-transitory computer-readable medium (eg, memory). In short, the method 1400 includes receiving a band selection signal and routing the received RF signal to a selected output along one or more paths to process the received RF signal.

Method 1400 begins at block 1410 with a controller receiving a band selection signal. The controller may receive a band selection signal from another controller or may receive a band selection signal from a cellular base station or other external source. The band selection signal may indicate one or more frequency bands on which the wireless device will transmit and receive RF signals. In some implementations, the band selection signal indicates a set of frequency bands used for carrier set communication.

At block 1420, the controller determines an output terminal for each frequency band indicated by the frequency band selection signal. In some implementations, the band selection signal indicates a single frequency band, and the controller determines a preset output terminal of the single frequency band. In some implementations, the band selection signal indicates two frequency bands, and the controller determines a different output terminal for each of the two frequency bands. In some implementations, the band selection signal indicates more frequency bands than there are available output terminals, and the control The controller determines two or more of the combined frequency bands (and therefore, determines the same output terminal of two or more frequency bands). The controller can determine the closest frequency bands or their farthest frequency bands.

At block 1430, the controller controls the output multiplexer to route each frequency band signal to the determined output terminal. The controller can control the output multiplexer by turning on or off one or more SPST switches, determining the status of one or more SPMT switches, by sending an output multiplexer control signal, or by other mechanisms.

FIG. 15 shows some or all of the diversity receiver configurations (FIGS. 3, 4, 5, 6, 7, 7, 10, and 13A to 13F) in some embodiments. ) Can be implemented in whole or in part in the module. This module can be, for example, a front-end module (FEM). This module can be, for example, a diversity receiver (DRx) FEM. In the example of FIG. 15, the module 1500 may include a package substrate 1502, and several components may be mounted on the package substrate 1502. For example, a controller 1504 (which may include a front-end power management integrated circuit [FE-PIMC]), a low noise amplifier assembly 1506 (which may include one or more variable gain amplifiers), a matching component 1508 (which May include one or more adjustable matching circuits), a multiplexer assembly 1510 (which may include a dynamic routing input multiplexer and / or a dynamic routing output multiplexer), and a filter bank 1512 (which may include one or more Band-pass filters) may be mounted and / or implemented on and / or within the package substrate 1502. Other components, such as several SMT devices 1514, can also be mounted on the package substrate 1502. Although all of the various components are depicted as being arranged on a package substrate 1502, it will be understood that some components may be implemented on other components.

In some implementations, devices and / or circuits having one or more of the features described herein can be included in RF electronics such as wireless devices. This device and / or circuit can be implemented directly in a wireless device in the form of a module as described herein or in some combination thereof. In some embodiments, this wireless device may include, for example, a cellular phone, a smart phone, a handheld wireless device with or without phone functionality, a wireless tablet, and the like.

FIG. 16 depicts an example wireless device 1600 having one or more of the advantageous features described herein. In the context of one or more modules having one or more features as described herein, such modules may typically be represented by a dashed frame 1601 (which may be implemented as, for example, a front-end module), a diversity RF module 1611 (Which may be implemented as, for example, a downstream module) and a diversity receiver (DRx) module 900 (which may be implemented as, for example, a front-end module) is depicted.

Referring to FIG. 16, a power amplifier (PA) 1620 may receive its respective RF signals from a transceiver 1610 that may be configured and operated in a known manner to generate RF signals to be amplified and transmitted, and process the received signals. The transceiver 1610 is shown as interacting with a baseband subsystem 1608, which is configured to provide conversion between user-friendly data and / or voice signals and RF signals suitable for the transceiver 1610. The transceiver 1610 may also communicate with a power management component 1606, which is configured to manage power for operation of the wireless device 1600. This power management can also control the operation of the baseband subsystem 1608 and the modules 1601, 1611, and 900.

The baseband subsystem 1608 is shown connected to the user interface 1602 to facilitate various inputs and outputs of voice and / or data provided to and received from the user. The baseband subsystem 1608 may also be connected to a memory 1604, which is configured to store data and / or instructions that facilitate the operation of the wireless device, and / or provide storage for information for the user.

In the example wireless device 1600, the output of the PA 1620 is shown as matched (via the respective matching circuit 1622) and routed to its respective duplexer 1624. Such amplified and filtered signals may be routed to the main antenna 1616 via an antenna switch 1614 for transmission. In some embodiments, the duplexer 1624 may allow a common antenna (eg, the main antenna 1616) to perform transmission and reception operations simultaneously. In FIG. 16, the received signal is shown as being routed to an "Rx" path that may include, for example, a low noise amplifier (LNA).

The wireless device also includes a diversity antenna 1626 and a diversity receiver module 900 for receiving signals from the diversity antenna 1626. The diversity receiver module 900 processes the received signals and transmits the processed signals to a diversity RF module 1611 via a cable 1635. The diversity RF module 1611 is The signal is further processed before being fed to the transceiver 1610.

One or more features of the present invention may be implemented by various cellular bands as described herein. Examples of such frequency bands are listed in Table 1. It will be understood that at least some of these frequency bands may be divided into sub-bands. It will also be understood that one or more features of the invention may be implemented with a frequency range that does not have a name such as the example of Table 1.

Unless the context clearly requires otherwise, throughout the specification and patent application, the words "including" and similar should be interpreted in an inclusive sense, not in an exclusive or exhaustive sense; in other words, in the meaning of "including (but not limited to) To explain. The term "coupled" as used herein refers to two or more elements that can be directly connected or connected by means of one or more intermediate elements. In addition, when used in this application, the words "herein", "above", "below" and words of similar meaning shall refer to the entirety of the application and not to any particular part of the application. Where the context permits, words using the singular or plural number in the above [Embodiment] may also include the plural or singular number respectively. Reference is made to the word "or" in a list of two or more items, which encompasses all of the following interpretations of the word: any one of the items in the list, all items in the list, and any combination of items in the list.

The above implementations of the embodiments of the invention are not intended to be exhaustive or to limit the invention to the precise form disclosed above. Those skilled in the relevant art will recognize that although specific embodiments and examples of the invention have been described above for illustrative purposes, various equivalent modifications are possible within the scope of the invention. For example, although programs or blocks are presented in a given order, alternative embodiments may perform routines with steps in a different order, or use a system with blocks, and may delete, move, add, subdivide, combine, and / Or modify some programs or blocks. Each of these programs or blocks can be implemented in a number of different ways. Also, although programs or blocks are sometimes shown as being executed continuously, such programs or blocks may alternatively be executed in parallel or may be executed at different times.

The teachings of the present invention provided herein can be applied to other systems, not necessarily the systems described above. The elements and behaviors of the various embodiments described above may be combined to provide other embodiments.

Although some embodiments of the invention have been described, these embodiments are by way of example only It is presented and is not intended to limit the scope of the invention. In fact, the novel methods and systems described herein may be embodied in many other forms; furthermore, various omissions, substitutions and changes may be made to the forms of the methods and systems described herein without departing from the spirit of the invention. The scope of the accompanying patent application and equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the invention.

140‧‧‧Diversity antenna

311‧‧‧The first multiplexer

313a‧‧‧Band Pass Filter

313b‧‧‧Band Pass Filter

313c‧‧‧ Bandpass Filter

313d‧‧‧ Bandpass Filter

314a‧‧‧amplifier

314b‧‧‧amplifier

314c‧‧‧amplifier

314d‧‧‧amplifier

700‧‧‧Diversity receiver configuration

702‧‧‧Diversity receiver controller

710‧‧‧Diversity receiver module

712‧‧‧Output Multiplexer

735a‧‧‧ transmission line

735b‧‧‧ transmission line

Claims (20)

A receiving system comprising: a plurality of amplifiers, each of the plurality of amplifiers being 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 radio frequency signal received at the amplifier; an input multiplexer configured to receive one or more radio frequency signals at one or more input multiplexer inputs, and the one or more Each of the plurality of radio frequency signals is output to one or more of a plurality of input multiplexer outputs to propagate along one or more of the plurality of paths; an output multiplexer, State to receive one or more amplified radio frequency signals propagating along the respective one or more of the plurality of paths at one or more respective output multiplexer inputs, and the one or more amplified RF signals Each of the radio frequency signals is output to a selected one of a plurality of output multiplexer outputs; and a controller configured to receive a frequency band selection signal and control the input frequency based on the frequency band selection signal And the output multiplexer. If the receiving system of claim 1, wherein in response to indicating that the one or more radio frequency signals include a frequency band selection signal of a single frequency band, the controller is configured to control the output multiplexer to correspond to the single frequency band. An amplified RF signal received at an input of an output multiplexer is routed to a preset output multiplexer output. For example, the receiving system of claim 2, wherein the preset output multiplexer output is different for different single frequency bands. If the receiving system of claim 1, wherein in response to indicating that the one or more radio frequency signals include a frequency band selection signal of a first frequency band and a second frequency band, the controller is configured to control the output multiplexer to convert An amplified RF signal received at an input of an output multiplexer corresponding to the first frequency band is routed to a first output multiplexer output And an amplified RF signal received at an input of an output multiplexer corresponding to the second frequency band is routed to a second output multiplexer output. The receiving system according to claim 4, wherein the first frequency band and the second frequency band are both a high frequency band or a low frequency band. If the receiving system of claim 1, wherein the controller is configured to control the output in response to indicating that the one or more radio frequency signals include a first frequency band, a second frequency band, and a third frequency band selection signal The multiplexer combines an amplified RF signal received at an output multiplexer input corresponding to the first frequency band and an amplified RF signal received at an output multiplexer input corresponding to the second frequency band to generate a Combine the signals to route the combined signal to a first output multiplexer output and route an amplified RF signal received at an output multiplexer input corresponding to the third frequency band to a second output multiplexer Device output. The receiving system of claim 6, wherein the first frequency band and the second frequency band are the closest ones among the first frequency band, the second frequency band, and the third frequency band. The receiving system of claim 6, wherein the first frequency band and the second frequency band are the furthest of the first frequency band, the second frequency band, and the third frequency band. If the receiving system of claim 1, wherein in response to indicating that the one or more radio frequency signals include a frequency band selection signal of a plurality of frequency bands and in response to a controller signal indicating that a transmission line is unavailable, the controller is configured to control The output multiplexer combines multiple amplified radio frequency signals received at the inputs of the multiple output multiplexers corresponding to the multiple frequency bands to generate a combined signal and route the combined signal to an output multiplexer output. The receiving system of claim 1, wherein the controller is configured to control the output multiplexer in response to a first frequency band selection signal to route an amplified RF signal received at an input of the output multiplexer to a The first output multiplexer outputs and controls the output multiplexer to respond to a second frequency band selection signal at the output multiplexer An amplified RF signal received at the input is routed to a second output multiplexer output. The receiving system of claim 1, wherein the output multiplexer includes a first combiner coupled to a first output multiplexer output and a second combiner coupled to a second output multiplexer output Combiner. As in the receiving system of claim 11, wherein an input of the output multiplexer is coupled to the first combiner and the second combiner via one or more switches. The receiving system of claim 12, wherein the controller controls the output multiplexer by controlling the one or more switches. The receiving system of claim 12, wherein the one or more switches include two single-pole / single-throw switches. The receiving system of claim 12, wherein the one or more switches include a single unipolar / multi-throw switch. The receiving system according to claim 1, further comprising a plurality of transmission lines respectively coupled to the outputs of the plurality of output multiplexers. A radio frequency module includes: a packaging substrate configured to receive a plurality of components; and a receiving system implemented on the packaging substrate. The receiving system includes: a plurality of amplifiers, the plurality of amplifiers Each is placed along one of a plurality of paths between an input of the receiving system and an output of the receiving system, and is configured to amplify a radio frequency signal received at the amplifier; an input A multiplexer configured to receive one or more radio frequency signals at one or more input multiplexer inputs and output each of the one or more radio frequency signals to a plurality of input multiplexers The selected one or more of the outputs are propagated along each one or more of the plurality of paths; an output multiplexer is configured to be at one or more of the respective output multiplexer inputs Receiving one or more of the respective ones of the plurality of paths One or more amplified radio frequency signals propagated by the user, and outputting each of the one or more amplified radio frequency signals to a selected one of a plurality of output multiplexer outputs; and a controller that It is configured to receive a band selection signal, and control the input multiplexer and the output multiplexer based on the band selection signal. The RF module of claim 17, wherein the RF module is a diversity receiver front-end module. A wireless device includes: a first antenna configured to receive a first radio frequency signal; a first front-end module that communicates with the first antenna; the first front-end module includes a warp group The first front-end module further includes a receiving system implemented on the packaging substrate, the receiving system includes: a plurality of amplifiers, each of the plurality of amplifiers is Placed along 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 radio frequency signal received at the amplifier; an input multiplexer, which Configured to receive one or more radio frequency signals at one or more input multiplexer inputs and output each of the one or more radio frequency signals to a selected one of a plurality of input multiplexer outputs One or more to propagate along each one or more of the plurality of paths; an output multiplexer configured to receive the plurality of ones along the one or more respective output multiplexer inputs The one or more of the respective ones in the path One or more amplified radio frequency signals and outputting each of the one or more amplified radio frequency signals to a selected one of a plurality of output multiplexer outputs; and a controller configured to To receive a frequency band selection signal and control the input multiplexer and the output multiplexer based on the frequency band selection signal; and a communication module configured to be coupled to the plurality of output multiplexers respectively through The plurality of transmission lines output from the transmitter receive a processed version of the first radio frequency signal from the first front-end module, and based on the processed version of the first radio frequency signal Generate data bits. If the wireless device of claim 19, further comprising a second antenna configured to receive a second radio frequency signal, and a second front-end module in communication with the second antenna, the communication module is configured The data bit is generated based on receiving a processed version of the second radio frequency signal from an output of one of the second front-end modules, and based on the processed version of the second radio frequency signal.