TW201701600A - Diversity receiver front end system with amplifier phase compensation - Google Patents

Abstract

Diversity receiver front end system with amplifier phase compensation. A receiving system can include a first amplifier disposed along a first path, corresponding to a first frequency band, between an input of the receiving system and an output of the receiving system. The receiving system can include a second amplifier disposed along a second path, corresponding to a second frequency band, between the input of the receiving system and the output of the receiving system. The receiving system can include a first phase-shift component disposed along the first path and configured to phase-shift the second frequency band of a signal passing through the first phase-shift component based on a phase-shift caused by the first amplifier at the second frequency band.

Description

Diversity Receiver Front End System with Amplifier Phase Compensation Cross-reference to related applications

This application is a continuation of U.S. Application Serial No. 14/734,759, filed on Jun. 9, 2015, entitled <RTI ID=0.0>0> The present application claims the priority of the following application: US Provisional Application No. 62/073,043, filed on October 31, 2014, entitled "DIVERSITY RECEIVER FRONT END SYSTEM, filed on October 31, 2014, entitled CARRIER AGGREGATION USING U.S. Provisional Application No. 62/073,039, filed on Jan. 31, 2014, which is hereby incorporated by reference in its entirety in its entirety in its entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire entire all

The present invention generally relates to wireless communication systems having one or more diversity receive 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 many radio frequency (RF) applications, the diversity receive antenna is placed physically away from the main antenna. When two antennas are used at the same time, the transceiver can process signals from the two antennas to increase the amount of data transport.

According to some implementations, the present invention is directed to a receiving system including a controller configured to selectively activate one or more of a plurality of paths between an input of a receiving system and an output of a receiving system . The receiving system further includes a plurality of amplifiers. Each of the plurality of amplifiers is disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the amplifier. The receiving system further includes a plurality of phase shifting components. Each of the plurality of phase shifting components is disposed along a corresponding one of the plurality of paths and configured to phase shift signals through the phase shifting component.

In some embodiments, a first phase shifting component of the plurality of phase shifting components disposed along a first path of the plurality of paths corresponding to the first frequency band can be configured to cause a signal to pass through the first phase shifting component The second frequency band is phase shifted such that a second initial signal propagating along a second path corresponding to the second frequency band of the plurality of paths is at least partially in phase with a second reflected signal propagating along the first path.

In some embodiments, a second phase shifting component of the plurality of phase shifting components disposed along the second path can be configured to phase shift a first frequency band of the signal passing through the second phase shifting component such that The first initial signal propagated by a path is at least partially in phase with the first reflected signal propagating along the second path.

In some embodiments, the first phase shifting component can be further configured to phase shift a third frequency band of the signal passing through the first phase shifting component such that a third path corresponding to the third frequency band along the plurality of paths The third initial signal propagated is at least partially in phase with the third reflected signal propagating along the first path.

In some embodiments, the first phase shifting component can be configured to phase shift a second frequency band of the signal passing through the first phase shifting component such that the second initial signal and the second reflected signal have an integer of 360 degrees The phase difference of multiples.

In some embodiments, the receiving system can further include a multiplexer configured to separate the input signal received at the input into a plurality of signals propagating along a plurality of paths at respective multiple frequency bands. In an embodiment, the receiving system can further include a signal combiner configured to combine signals propagating along a plurality of paths. In some embodiments, the receiving system can further include a post-combiner amplifier disposed between the signal combiner and the output, the post-combined amplifier configured to amplify reception at the post-combined amplifier signal. In some embodiments, each of the plurality of phase shifting components can be disposed between the signal combiner and each of the plurality of amplifiers. In some embodiments, at least one of the plurality of amplifiers can include a two-stage amplifier.

In some embodiments, at least one of the plurality of phase shifting components can be a passive circuit. In some embodiments, at least one of the plurality of phase shifting components can be an LC circuit.

In some embodiments, at least one of the plurality of phase shifting components can include an adjustable phase shifting component configured to phase shift a signal through the adjustable phase shifting component by a self-controller The amount of phase shift tuning signal control received.

In some embodiments, the receiving system can further include a plurality of impedance matching components, each of the impedance matching components being disposed along a corresponding one of the plurality of paths and configured to reduce a corresponding one of the plurality of paths At least one of an extra-frequency noise index or an extra-frequency gain.

In some implementations, the present invention is directed 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 controller configured to selectively initiate one or more of a plurality of paths between an input of the receiving system and an output of the receiving system. The receiving system further includes a plurality of amplifiers. Each of the plurality of amplifiers is disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the amplifier. The receiving system further includes a plurality of phase shifting components. Each of the plurality of phase shifting components is disposed along a corresponding one of the plurality of paths and configured to shift a signal through the phase shifting component phase.

In some embodiments, the RF module can be a Diversity Receiver Front End Module (FEM).

In some embodiments, a first one of the plurality of phase shifting components disposed along a first path of the plurality of paths corresponding to the first frequency band is configured to cause a signal to pass through the first phase shifting component The two frequency bands are phase shifted such that a second initial signal propagating along a second path corresponding to the second frequency band of the plurality of paths is at least partially in phase with a second reflected signal propagating along the first path.

In accordance with some teachings, the present invention is directed to a wireless device that includes 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 controller configured to selectively initiate one or more of a plurality of paths between an input of the receiving system and an output of the receiving system. The receiving system further includes a plurality of amplifiers. Each of the plurality of amplifiers is disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the amplifier. The receiving system further includes a plurality of phase shifting components. Each of the plurality of phase shifting components is disposed along a corresponding one of the plurality of paths and configured to phase shift a signal passing through the phase shifting component. The wireless device further includes a transceiver configured to receive a processed version of the first RF signal from the output via the transmission line and generate a data bit based on the processed version of the first RF signal.

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

In some embodiments, a first one of the plurality of phase shifting components disposed along a first path of the plurality of paths corresponding to the first frequency band is configured to cause a signal to pass through the first phase shifting component Two-band phase shifting such that the first of the plurality of paths corresponds to the second frequency band The second initial signal propagated by the two paths is at least partially in phase with the second reflected signal propagating along the first path.

For purposes of summarizing the invention, certain aspects, advantages, and novel features of the invention are described herein. It will be appreciated that all such advantages may not be achieved in accordance with any particular embodiment of the invention. The present invention may be embodied or carried out in a manner that achieves or optimizes a group of advantages or advantages as disclosed herein without necessarily achieving other advantages as may be appreciated or suggested herein.

The present invention is related to U.S. Application Serial No. 14/734,775, filed on Jun. 5,,,,,,,,,,,,,,,,,,,,,,,,, Into this article.

100‧‧‧Wired 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‧‧‧DRx front-end module

300‧‧‧ Diversity Receiver Configuration

302‧‧‧DRx controller

310‧‧‧DRx module

311‧‧‧First multiplexer

312‧‧‧Second multiplexer

313a‧‧‧Bandpass filter

313b‧‧‧Bandpass filter

313c‧‧‧Bandpass filter

313d‧‧‧ bandpass filter

314a‧‧Amplifier

314b‧‧Amplifier

314c‧‧Amplifier

314d‧‧‧Amplifier

320‧‧‧Diversity RF Module

321‧‧‧Diversity RF multiplexer

323a‧‧‧Bandpass filter

323b‧‧‧Bandpass filter

323c‧‧‧ bandpass 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‧‧‧Amplifier

500‧‧‧ Diversity Receiver Configuration

501‧‧‧Package substrate

502‧‧‧DRx controller

510‧‧‧DRx module

511‧‧‧First multiplexer

512‧‧‧Second multiplexer

513‧‧‧Out-of-module filter

514‧‧Amplifier

519‧‧‧ Bypass switch

600‧‧‧ Diversity Receiver Module

610‧‧‧DRx module

611‧‧‧Dualizer

612‧‧‧Signal combiner

614a‧‧‧Two-stage amplifier

614b‧‧‧Two-stage amplifier

615‧‧‧ Rear Combination Amplifier

624a‧‧‧ phase matching component / phase shifting component

624b‧‧‧ phase matching component / phase shifting component

640‧‧‧ Diversity Receiver Configuration

641‧‧‧DRx module

680‧‧‧ Diversity Receiver Configuration

681‧‧‧DRx module

700‧‧‧ Diversity Receiver Configuration

702‧‧‧DRx controller

710‧‧‧DRx module

724a‧‧‧Adjustable phase shifting components

724b‧‧‧Adjustable phase shifting components

724c‧‧‧Adjustable phase shifting components

724d‧‧‧Adjustable phase shifting components

800‧‧‧ Diversity Receiver Configuration

810‧‧‧DRx module

834a‧‧‧Impedance matching components

834b‧‧‧Impedance matching components

900‧‧‧ Diversity Receiver Configuration

902‧‧‧DRx controller

910‧‧‧DRx module

934a‧‧‧Adjustable impedance matching component

934b‧‧‧ Adjustable impedance matching component

934c‧‧‧Flexible impedance matching component

934d‧‧‧Adjustable impedance matching component

1000‧‧‧ Diversity Receiver Configuration

1002‧‧‧DRx controller

1010‧‧‧DRx module

1016‧‧‧Input adjustable impedance matching component

1017‧‧‧ Output adjustable impedance matching component

1100‧‧‧ Diversity Receiver Configuration

1102‧‧‧DRx controller

1110‧‧‧DRx module

1200‧‧‧ method

Block 1210‧‧‧

Block 1220‧‧

Block 1230‧‧‧

1300‧‧‧ Diversity Receiver (DRx) Module

1302‧‧‧Package substrate

1304‧‧‧ Controller

1306‧‧‧Low noise amplifier assembly

1308‧‧‧Matching components

1310‧‧‧Multi-tool assembly

1312‧‧‧ filter bank

1314‧‧‧SMT device

1331‧‧‧Fixed or adjustable phase shifting components

1332‧‧‧Fixed or adjustable impedance matching components

1400‧‧‧Wired devices

1401‧‧‧dotted box

1402‧‧‧User interface

1404‧‧‧ memory

1406‧‧‧Power Management Components

1408‧‧‧ fundamental frequency subsystem

1410‧‧‧ transceiver

1411‧‧‧Diversity RF Module

1414‧‧‧Antenna switch

1416‧‧‧ main antenna

1420‧‧‧Power Amplifier

1422‧‧‧matching circuit

1424‧‧‧Duplexer

1426‧‧‧Dividing antenna

1435‧‧‧ transmission line

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

Figure 2 shows the DRx configuration including the Diversity Receiver (DRx) Front End Module (FEM).

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

4 shows that in some embodiments, the diversity receiver configuration can include a diversity RF module having fewer amplifiers than a diversity receiver (DRx) module.

5 shows that in some embodiments, the diversity receiver configuration can include a DRx module coupled to an out-of-module filter.

6A shows that in some embodiments, the diversity receiver configuration can include a DRx module having one or more phase matching components.

6B shows that in some embodiments, the diversity receiver configuration can include a DRx module having one or more phase matching components and a two stage amplifier.

6C shows that in some embodiments, the diversity receiver configuration can include one or more A phase matching component and a DRx module of the post-combination amplifier.

Figure 7 shows that in some embodiments, the diversity receiver configuration can include a DRx module with an adjustable phase shifting component.

8 shows that in some embodiments, a diversity receiver configuration can include a DRx module having one or more impedance matching components.

Figure 9 shows that in some embodiments, the diversity receiver configuration can include a DRx module with a tunable impedance matching component.

Figure 10 shows that in some embodiments, the diversity receiver configuration can include a DRx module having a tunable impedance matching component disposed at the input and output.

Figure 11 shows that in some embodiments, the diversity receiver configuration can include a DRx module having a plurality of adjustable components.

Figure 12 shows an embodiment of a flow chart representation of a method of processing an RF signal.

Figure 13 depicts a module having one or more features as described herein.

Figure 14 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.

1 shows a wireless device 100 having a communication module 110 coupled to a primary antenna 130 and a diversity antenna 140. The communication module 110 (and its constituent components) can be controlled by the controller 120. Communication module 110 includes a transceiver 112 that is configured to convert between analog radio frequency (RF) signals and digital data signals. To this end, the transceiver 112 can include a digital analog converter, an analog digital converter, a local oscillator for modulating or demodulating a base frequency analog signal into a carrier frequency or self-carrier frequency modulation or demodulation of a fundamental frequency analog signal. A baseband processor, or other component, that converts between a digital sample and a data bit (eg, voice or other type of material).

The communication module 110 further includes a coupling between the main antenna 130 and the transceiver 112. RF module 114. Since the RF module 114 can be physically close to the primary antenna 130 to reduce attenuation due to cable loss, the RF module 114 can be referred to as a front end module (FEM). The RF module 114 may perform processing on analog signals received from the primary antenna 130 for use at or from the transceiver 112 for transmission via the primary antenna 130. To this end, the RF module 114 can include filters, power amplifiers, band select switches, matching circuits, and other components. Similarly, the communication module 110 includes a diversity RF module 116 coupled between the diversity antenna 140 and the transceiver 112 that performs similar processing.

When the signal is transmitted to the wireless device, signals can be received at both the primary antenna 130 and the diversity antenna 140. The primary antenna 130 and the diversity antenna 140 may be physically spaced apart such that signals having different characteristics at the primary antenna 130 and the diversity antenna 140 are received. For example, in one embodiment, primary antenna 130 and diversity antenna 140 can receive signals having different attenuation, noise, frequency response, or phase shifting. Transceiver 112 may use two signals having different characteristics to determine the data bits corresponding to the signal. In some implementations, the transceiver 112 selects between the primary antenna 130 and the diversity antenna 140 based on the characteristics, such as selecting an antenna having the highest signal to interference ratio. In some implementations, the transceiver 112 combines the signals from the primary 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 the signals to perform multiple input/multiple output (MIMO) communications.

Since the diversity antenna 140 is physically spaced apart from the primary antenna 130, the diversity antenna 140 is coupled to the communication module 110 by a transmission line 135, such as a cable or printed circuit board (PCB) trace. In some implementations, transmission line 135 is lossy and causes the signal received at diversity antenna 140 to decay before it reaches communication module 110. Thus, in some implementations, a gain is applied to the signal received at diversity antenna 140, as described below. Gain (and other analog processing, such as filtering) can be applied by the diversity receiver module. Since the diversity receiver module can be positioned to be physically close to the diversity antenna 140, it can be referred to as a diversity receiver front end module.

Figure 2 shows the diversity receiver (DRx) configuration including the DRx Front End Module (FEM) 210 200. The DRx configuration 200 includes a diversity antenna 140 that is configured to receive a diversity signal and provide the diversity signal to the DRx FEM 210. The DRx FEM 210 is configured to perform processing on the diversity signals received by the self-diversity antenna 140. For example, DRx FEM 210 can be configured to filter the diversity signal to one or more active frequency bands, for example, as indicated by controller 120. As another example, the DRx FEM 210 can be configured to amplify the diversity signal. To this end, the DRx FEM 210 can 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 that 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 can be implemented within the transceiver 112.

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

The DRx module 310 has an input that receives the diversity signal from the diversity antenna 140 and an output that provides the processed diversity signal to the transceiver 330 (via the transmission line 135 and the diversity RF module 320). The DRx module 310 inputs are fed into the input of the first multiplexer (MUX) 311. The first multiplexer 311 includes a plurality of multiplexer outputs, each of which corresponds to a path between the input and output of the DRx module 310. Each of the paths may correspond to a respective frequency band. The DRx module 310 output 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 one of the paths between the inputs and outputs of the DRx module 310.

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

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

As noted above, in some implementations, the diversity signal is a single frequency signal. Thus, in some implementations, the first multiplexer 311 is a single pole/multiple throw (SPMT) switch that routes the diversity signal to a frequency band corresponding to the single frequency signal in a plurality of paths based on signals received from the DRx controller 302. One of them. The DRx controller 302 can generate a signal based on the 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 frequency signal based on a signal received from the DRx controller 302.

As noted above, in some implementations, the diversity signal is a multi-frequency signal. Thus, in some implementations, the first multiplexer 311 is a signal splitter that routes the diversity signal to two or two of the plurality of paths corresponding to the multi-frequency signal based on the splitter control signal received from the DRx controller 302. Two or more of the above bands. The function of the signal splitter can be implemented as a SPMT switch, a diplexer filter, or some combination of these components. Similarly, in some implementations, the second multiplexer 312 is a signal combiner that combines two or more of the plurality of paths corresponding to the multi-frequency signal based on the combiner control signal received from the DRx controller 302. A signal of two or more of the frequency bands. The function of the signal combiner can be implemented as a SPMT switch, a diplexer filter, or some combination of these components. DRx controller 302 can A splitter control signal and a combiner control signal are generated based on the band select signal received by the DRx controller 302 from the communication controller 120.

Accordingly, in some implementations, the DRx controller 302 is configured to selectively initiate one or more of a 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 initiate one or more of a plurality of paths by transmitting a splitter control signal to the signal splitter and transmitting the combiner control signal to the signal combiner .

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

In some implementations, amplifiers 314a through 314d are narrowband amplifiers that are configured to amplify signals within respective frequencies of the path in which the amplifiers are disposed. In some implementations, amplifiers 314a through 314d can be controlled by DRx controller 302. For example, in some implementations, each of the amplifiers 314a through 314d includes an enable/disable input and is enabled (or disabled) based on the received amplifier enable signal and enable/disable input. The amplifier enable signal can be transmitted by the DRx controller 302. Thus, in some implementations, the DRx controller 302 is configured to selectively transmit an amplifier enable signal to one or more of the amplifiers 314a through 314d respectively disposed along one or more of the plurality of paths. Start one or more of a plurality of paths. In such implementations, unlike being controlled by DRx controller 302, first multiplexer 311 can be a signal splitter that routes the diversity signal to each of a plurality of paths, and second multiplexer 312 can be Combining signals from each of a plurality of paths Signal combiner. However, in implementations where DRx controller 302 controls first multiplexer 311 and second multiplexer 312, DRX controller 302 may also enable (or disable) specific amplifiers 314a through 314d (for example) to conserve battery.

In some implementations, amplifiers 314a through 314d are variable gain amplifiers (VGAs). Thus, 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 a plurality of paths and configured to amplify at the VGA The received signal has a gain controlled by an amplifier control signal received from the DRx controller 302.

The gain of the 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 that can be controlled by the amplifier control signal. The bypass switch can (in the first position) turn off the line between the input of the fixed gain amplifier to the output of the fixed gain amplifier, thereby allowing the signal to bypass the fixed gain amplifier. The bypass switch can (in the second position) open the line between the input and the output to pass the signal through the fixed gain amplifier. In some implementations, the fixed gain amplifier is deactivated or otherwise reconfigured to accommodate the bypass mode when the bypass switch is in the first position.

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 a VGA having a gain proportional to the amplifier control signal.

In some implementations, amplifiers 314a through 314d are variable current amplifiers (VCAs). The current drawn by the VCA can be bypassable, variable step size, continuously variable. In some implementations, at least one of the VCAs includes a fixed current amplifier and a bypass switch that can be controlled by the amplifier control signal. The bypass switch can (in the first position) turn off the line between the input of the fixed current amplifier and the output of the fixed current amplifier, thereby allowing the signal to bypass the fixed current amplifier. The bypass switch can (in the second position) open the line between the input and the output, This allows 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 deactivated or otherwise reconfigured to accommodate the bypass mode.

In some implementations, at least one of the VCAs includes a variable step current amplifier configured to amplify at a VCA by drawing current of one of a plurality of configured quantities indicated by an amplifier control signal Received signal. 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 extracting a current proportional to the amplifier control signal.

In some implementations, amplifiers 314a through 314d are fixed gain, fixed current amplifiers. In some implementations, amplifiers 314a through 314d are fixed gain, variable current amplifiers. In some implementations, amplifiers 314a through 314d are variable gain, fixed current amplifiers. In some implementations, amplifiers 314a through 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 the input signal received at the input. In some implementations, the DRx controller 302 generates an amplifier control signal based on signals received from the communication controller 120, which in turn can be based on a quality of service (Qos) metric of the received signal. The QoS metric of the received signal can be based at least in part on the diversity signal received on the diversity antenna 140 (eg, the input signal received at the input). The QoS metric of the received signal can be further based on the signal received on the primary antenna. In some implementations, the DRx controller 302 generates an amplifier control signal based on the QoS metric of the diversity signal without receiving a signal from the communication controller 120.

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

As described above, the DRx module 310 has an input that receives the diversity signal from the diversity antenna 140 and an output that provides the processed diversity signal to 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 transmission line 135 and performs further processing. In particular, the processed diversity signal is separated or routed to one or more paths by the diversity RF multiplexer 321, and the separated or routed signals are corresponding bands on the paths. The pass filters 323a to 323d are filtered and amplified by the corresponding amplifiers 324a to 324d. The output of each of the amplifiers 324a through 324d is provided to the transceiver 330.

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

In the case 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. Thus, in some implementations, bandpass filters 323a through 323d are not included in diversity RF module 320. Specifically, the band pass filters 313a through 313d of the DRx module 310 are used to reduce the strength of the extra-frequency blocker. In addition, the automatic gain control (AGC) table of the diversity RF module 320 can be shifted to reduce the amount of gain provided by the amplifiers 324a through 324d of the diversity RF module 320 by the gains provided by the amplifiers 314a through 314d of the DRx module 310. the amount.

For example, if the DRx module gain is 15 dB and the receiver sensitivity is -100 dBm, the diversity RF module 320 will achieve a sensitivity of -85 dBm. If the closed loop AGC of the diversity RF module 320 is active, its gain will automatically drop by 15 dB. However, both the signal component and the extra-frequency blocker are amplified by 15 dB. Therefore, the 15 dB gain reduction of the diversity RF module 320 can also be accompanied by an increase of 15 dB in its linearity. In particular, the amplifiers 324a through 324d of the diversity RF module 320 can be designed such that the linearity of the amplifier increases with decreasing gain (or increased current).

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

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

4 shows that in some embodiments, the diversity receiver configuration 400 can include a diversity RF module 420 having fewer amplifiers than the 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. The output of the DRx module 310 is passed via a transmission line 135 to a diversity RF module 420 that is different from the diversity RF module 320 of FIG. 3, except that the diversity RF module 420 of FIG. 4 includes fewer amplifiers than the DRx module 310.

As mentioned above, in some implementations, the diversity RF module 420 does not include a bandpass filter. Thus, in some implementations, one or more of the diversity RF modules 420 424 need not be band specific. In particular, the diversity RF module 420 can include one or more paths that are not mapped one-to-one with the path of the DRx module 310, each path including an amplifier 424. This mapping of paths (or corresponding amplifiers) can be stored in controller 120.

Thus, although the DRx module 310 includes several paths each corresponding to a frequency band, the diversity RF module 420 can 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 or adjustable that amplifies the signal received from the transmission line 135 and outputs the amplified signal to the multiplexer 421. Amplifier 424. The multiplexer 421 includes a plurality of multiplexer outputs, each of which corresponds 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 frequency signal. Thus, in some implementations, multiplexer 421 is an SPMT switch that routes the diversity signal to one of a plurality of output frequency bands corresponding to the single frequency signal based on signals received from controller 120. In some implementations, the diversity signal is a multi-frequency signal. Thus, in some implementations, multiplexer 421 is a signal splitter that routes the diversity signal based on a splitter control signal received from controller 120 to two or more frequency bands corresponding to the multi-frequency signal in the plurality of outputs Both or more. In some implementations, the diversity RF module 420 can be combined with the transceiver 330 into a single module.

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

FIG. 5 shows that in some embodiments, the diversity receiver configuration 500 can include a DRx module 510 coupled to the out-of-module filter 513. The DRx module 510 can 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 can include one or more signal paths that are routed away from the DRx module 510 and can be used by a system integrator, designer, or manufacturer to support filters for any desired frequency band.

The DRx module 510 includes a number of paths between the inputs and outputs of the DRx module 510. The DRx module 510 includes a bypass path between the input and the output that is initiated 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 can include a plurality of switches (eg, a first switch that is proximate to the input via the placement entity and a second switch that is proximate to the output via the placement entity) turn off). 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 including a first multiplexer 511 and a second multiplexer 512. The multiplexer path includes a plurality of on-module paths including a first multiplexer 511, band pass filters 313a to 313d implemented on the package substrate 501, and an amplifier 314a implemented on the package substrate 501. Up to 314d and second multiplexer 512. The multiplexer path includes one or more out-of-module paths, and the one or more external modules include a first multiplexer 511, a band pass filter 513 implemented outside the package substrate 501, an amplifier 514, and a second Worker 512. The amplifier 514 can be a wideband amplifier implemented on the package substrate 501 or can be implemented outside the package substrate 501. As described above, the amplifiers 314a through 314d, 514 can be variable gain amplifiers and/or variable current amplifiers.

The DRx controller 502 is configured to selectively initiate one or more of a plurality of paths between the input and the output. In some implementations, the DRx controller 502 is configured to selectively initiate one or more of the plurality of paths based on a band selection signal received by the DRx controller 502 (eg, from the communication controller). The DRx controller 502 can selectively initiate a path by, for example, opening or closing the bypass switch 519, enabling or disabling the amplifiers 314a through 314d, 514, controlling the multiplexer 511, 512, or via other mechanisms. For example, DRx controller 502 can set the gain along amplifiers (eg, paths between filters 313a through 313d, 513 and amplifiers 314a through 314d, 514) or by substantially amplifying amplifiers 314a through 314d, 514 to substantially 0 to open or close the switch.

FIG. 6A shows that in some embodiments, the diversity receiver configuration 600 can include a DRx module 610 having one or more phase matching components 624a through 624b. The DRx module 610 includes two paths: an input from the DRx module 610, coupled to the antenna 140, and an output from the DRx module 610 coupled to the transmission line 135.

In the DRx module 610 of FIG. 6A, the signal separator and the band pass filter are implemented as a duplexer 611. The dual 611 includes an input coupled to the antenna 140, a first output coupled to the first amplifier 314a, and a second output coupled to the second amplifier 314b. At the first output At this point, the diplexer 611 outputs a signal that is received at the input (eg, from the antenna 140) and filtered to the first frequency band. At the second output, the diplexer 611 outputs a signal that is received at the input and filtered to the second frequency band. In some implementations, the duplexer 611 can be replaced with a triplexer, quadruplexer, or any other multiplexer configured to separate the input signal received at the input of the DRx module 610 into A plurality of signals propagating along a plurality of paths in a plurality of frequency bands.

As described above, each of the amplifiers 314a through 314b is placed along the corresponding one of the paths and configured to amplify the signal received at the amplifier. The outputs of amplifiers 314a through 314b are fed via corresponding phase shifting components 624a through 624b prior to being combined by signal combiner 612.

The signal combiner 612 includes a first input coupled to the first phase shifting component 624a, a second input coupled to the second phase shifting component 624b, and an output coupled to the output of the DRx module 610. The signal at the output of the signal combiner is the sum of the signals at the first input and the second input. Thus, the signal combiner is configured to combine signals propagating along a plurality of paths.

When a signal is received by antenna 140, the signal is filtered by the diplexer 611 to the first frequency band and propagates along a first path through the first amplifier 314a. The filtered and amplified signal is phase shifted by first phase shifting component 624a and fed to a first input of signal combiner 612. In some implementations, signal combiner 612 or second amplifier 314b does not prevent the signal from continuing to pass signal combiner 612 in the reverse direction along the second path. Thus, the signal propagates through the second phase shifting component 624b and through the second amplifier 314b, where the signal is reflected off the diplexer 611. The reflected signal propagates through second amplifier 314b and second phase shifting component 624b to reach a second input of signal combiner 612.

When the initial signal (at the first input of signal combiner 612) and the reflected signal (at the second input of signal combiner 612) are out of phase, the summation performed by signal combiner 612 results in signal combiner 612 The signal at the output is weakened. Similarly, the summation performed by signal combiner 612 results in signal enhancement at the output of signal combiner 612 when the initial signal is in phase with the reflected signal. Thus, in some implementations, the second phase shifting component 624b is configured The signal is shifted (at least in the first frequency band) such that the initial signal is at least partially in phase with the reflected signal. In particular, the second phase shifting component 624b is configured to phase shift the signal (at least in the first frequency band) such that the sum of the sum of the initial signal and the reflected signal is greater than the amplitude of the initial signal.

For example, the second phase shifting component 624b can be configured to phase shift the signal through the second phase shifting component 624b by back propagation through the second amplifier 314b, reflection away from the diplexer 611, and The phase shift introduced by the forward propagation of the second amplifier 314b is -1/2 times. As another example, the second phase shifting component 624b can be configured to phase shift the signal through the second phase shifting component 624b by 360 degrees from the backpropagation through the second amplifier 314b, away from the diplexer 611. The reflection and the difference between the phase shifts introduced by the forward propagation of the second amplifier 314b are one-half. In general, the second phase shifting component 624b can be configured to phase shift the signal through the second phase shifting component 624b such that the initial and reflected signals have a phase difference that is an integer multiple of 360 degrees (including 0). .

As an example, the initial signal can be at 0 degrees (or any other reference phase), and the back propagation through the second amplifier 314b, the reflection away from the diplexer 611, and the forward propagation through the second amplifier 314b can be introduced 140. Degree of phase shift. Thus, in some implementations, the second phase shifting component 624b is configured to phase shift the signal through the second phase shifting component 624b by -70 degrees. Thus, the initial signal is phase shifted to -70 degrees by the second phase shifting component 624b, by the back propagation through the second amplifier 314b, the reflection away from the diplexer 611, and the forward through the second amplifier 314b. The propagation is phase shifted to 70 degrees and phase shifted back to 0 degrees by the second phase shifting component 624b.

In some implementations, the second phase shifting component 624b is configured to phase shift the signal through the second phase shifting component 624b by 110 degrees. Thus, the initial signal is phase shifted to 110 degrees by the second phase shifting component 624b, propagated back through the second amplifier 314b, reflected away from the diplexer 611, and propagated forward through the second amplifier 314b. Phase shifted to 250 degrees and phase shifted to 360 degrees by second phase shifting component 624b.

At the same time, the signal received by antenna 140 is filtered by dual amplifier 611 to the second frequency band and propagates along a second path through second amplifier 314b. The filtered and amplified signal is phase shifted by second phase shifting component 624b and fed to a second input of signal combiner 612. In some implementations, signal combiner 612 or first amplifier 314a does not prevent the signal from continuing to pass signal combiner 612 in the reverse direction along the first path. Thus, the signal propagates through the first phase shifting component 624a and through the second amplifier 314a, where the signal is reflected off the diplexer 611. The reflected signal propagates through first amplifier 314a and first phase shifting component 624a to reach a first input of signal combiner 612.

When the initial signal (at the second input of signal combiner 612) is out of phase with the reflected signal (at the first input of signal combiner 612), the summation performed by signal combiner 612 results in an output at signal combiner 612. The signal at the location is attenuated, and when the initial signal is in phase with the reflected signal, the summation performed by signal combiner 612 results in an enhancement of the signal at the output of signal combiner 612. Thus, in some implementations, the first phase shifting component 624a is configured to phase shift the signal (at least in the second frequency band) such that the initial signal is at least partially in phase with the reflected signal.

For example, the first phase shifting component 624a can be configured to phase shift the signal through the first phase shifting component 624a by the back propagation through the first amplifier 314a, the reflection away from the diplexer 611, and The phase shift introduced by the forward propagation of the first amplifier 314a is -1/2 times. As another example, the first phase shifting component 624a can be configured to phase shift the signal through the first phase shifting component 624a by 360 degrees from the backpropagation through the first amplifier 314a, away from the diplexer 611. The reflection and half of the difference between the phase shifts introduced by the forward propagation of the first amplifier 314a. In general, the first phase shifting component 624a can be configured to phase shift the signal through the first phase shifting component 624a such that the initial signal and the reflected signal have a phase difference of an integer multiple (including 0) of 360 degrees. .

Phase shifting components 624a through 624b can be implemented as passive circuits. In particular, phase shifting components 624a through 624b can be implemented as LC circuits and include one or more passive components, such as inductors and/or Capacitor. The passive components can be connected in parallel and/or in series and can be connected between the outputs of the amplifiers 314a through 314b and the inputs of the signal combiner 612, or can be connected between the outputs of the amplifiers 314a through 314b and the ground voltage. In some implementations, phase shifting components 624a through 624b are integrated into the same die as amplifiers 314a through 314b or integrated on the same package.

In some implementations (eg, as shown in FIG. 6A), phase shifting components 624a through 624b are disposed along the path after amplifiers 314a through 314b. Thus, any signal attenuation produced by phase shifting components 624a through 624b does not affect the performance of module 610, such as the signal to noise ratio of the output signal. However, in some implementations, phase shifting components 624a through 624b are disposed along the path before amplifiers 314a through 314b. For example, phase shifting components 624a through 624b can be integrated into an impedance matching component disposed between diplexer 611 and amplifiers 314a through 314b.

6B shows that in some embodiments, the diversity receiver configuration 640 can include a DRx module 641 having one or more phase matching components 624a through 624b and dual stage amplifiers 614a through 614b. The DRx module 641 of FIG. 6B is substantially similar to the DRx module 610 of FIG. 6A, except that the amplifiers in the DRx module 610 of FIG. 6A are replaced with the two-stage amplifiers 614a through 614b of the DRx module 641 of FIG. 6B. 314a to 314b.

6C shows that in some embodiments, the diversity receiver configuration 680 can include a DRx module 681 having one or more phase matching components 624a through 624b and a post-combining amplifier 615. The DRx module 681 of FIG. 6C is substantially similar to the DRx module 610 of FIG. 6A, except that the DRx module 681 of FIG. 6C includes a post disposed between the output of the signal combiner 612 and the output of the DRx module 681. A combination amplifier 615 is placed. Like amplifiers 314a through 314b, post-combination amplifier 615 can be a variable gain amplifier (VGA) and/or a variable current amplifier controlled by a DRx controller (not shown).

FIG. 7 shows that in some embodiments, the diversity receiver configuration 700 can include a DRx module 710 having adjustable phase shifting components 724a through 724d. Each of the adjustable phase shifting components 724a through 724d can be configured to phase shift signals passing through the adjustable phase shifting component from the DRx controller 702 The amount of phase shift tuning signal control received.

The diversity receiver configuration 700 includes a DRx module 710 having an input coupled to the antenna 140 and an output coupled to the transmission line 135. The DRx module 710 includes a number of paths between the inputs and outputs of the DRx module 710. In some implementations, the DRx module 710 includes one or more bypass paths (not shown) between the inputs and outputs initiated by one or more bypass switches controlled by the DRx controller 702.

The DRx module 710 includes a plurality of multiplexer paths including an input multiplexer 311 and an output multiplexer 312. The multiplexer path includes a number of on-module paths (shown) including input multiplexer 311, bandpass filters 313a through 313d, amplifiers 314a through 314d, and adjustable phase shifting components 724a through 724d The output multiplexer 312 and the post-combination amplifier 615. The multiplexer path can include one or more out-of-module paths (not shown) as described above. As also described above, amplifiers 314a through 314d (including post-gain amplifier 615) can be variable gain amplifiers and/or variable current amplifiers.

Adjustable phase shifting components 724a through 724d can include one or more variable components, such as inductors and capacitors. The variable components can be connected in parallel and/or in series and can be connected between the outputs of the amplifiers 314a through 314d and the input of the output multiplexer 312, or can be connected between the outputs of the amplifiers 314a through 314d and the ground voltage.

The DRx controller 702 is configured to selectively initiate one or more of a plurality of paths between the input and the output. In some implementations, the DRx controller 702 is configured to selectively initiate one or more of a 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 the path, for example, by enabling or disabling the amplifiers 314a through 314d, controlling the multiplexers 311, 312, or via other mechanisms as described above.

In some implementations, the DRx controller 702 is configured to tune the adjustable phase shifting components 724a through 724d. In some implementations, the DRx controller 702 tunes the adjustable phase shifting components 724a through 724d based on the band selection signal. For example, the DRx controller 702 can be based on selection by frequency band The tunable phase shifting components 724a through 724d are tuned by selecting a frequency band (or set of frequency bands) indicative of the signal and a lookup table associated with the tuning parameters. Thus, in response to the band select signal, the DRx controller 702 can transmit the phase shift tuning signal to the adjustable phase shifting components 724a through 724d in each of the active paths to tune the adjustable phase shifting component (or its variable) according to the tuning parameters. Component).

The DRx controller 702 can be configured to tune the adjustable phase shifting components 724a through 724d such that the out-of-frequency reflected signals are in phase with the out-of-band initial signals at the output multiplexer 312. For example, if the enable band selection signal indicates a first path corresponding to the first frequency band (through the first amplifier 314a), a second path corresponding to the second frequency band (through the second amplifier 314b), and the third path (passing through the third amplifier 314c), the DRx controller 702 can tune the first tunable phase shifting component 724a such that: (1) for the signal propagating along the second path (in the second frequency band), the initial signal Reflecting signals that are propagating back along the first path, reflected off the bandpass filter 313a and propagating forward via the first path, and (2) for signals propagating along the third path (in the third frequency band) The initial signal is in phase with the reflected signal propagating back along the first path, reflected off the bandpass filter 313a and propagating forward via the first path.

The DRx controller 702 can tune the first tunable phase shifting component 724a such that the second frequency band is phase shifted by a different amount than the third frequency band. For example, if the signal in the second frequency band is phase shifted by 140 degrees and the third frequency band is propagated through the back of the first amplifier 314a, the reflection from the bandpass filter 313a, and the first amplifier 314b. Propagating forward through the phase shift 130 degrees, the DRx controller 702 can tune the first tunable phase shifting component 724a to phase shift the second frequency band by 70 degrees (or 110 degrees) and phase shift the third frequency band by 65 degrees (or 115 degree).

The DRx controller 702 can similarly tune the second phase shifting component 724b and the third phase shifting component 724c.

As another example, if the enable band select signal indicates the first path, the second path, and the fourth path (through the fourth amplifier 314d), the DRx controller 702 can tune the first adjustable phase shifting component 724a such that: (1) for a signal propagating along the second path (under the second frequency band), the initial signal is back-propagated along the first path, reflected off the bandpass filter 313a and The reflected signal propagating forward through the first path is in phase; and (2) for the signal propagating along the fourth path (in the fourth frequency band), the initial signal is back-propagated along the first path, and the reflection leaves the band pass filter The 313a and the reflected signals propagating forward via the first path are in phase.

The DRx controller 702 can tune the variable components of the tunable phase shifting components 724a through 724d to have different sets of frequency bands having different values.

In some implementations, the adjustable phase shifting components 724a through 724d are replaced with fixed phase shifting components that are not adjustable or controlled by the DRx controller 702. Each of the phase shifting components disposed along a corresponding one of the paths corresponding to one frequency band can be configured to phase shift each of the other frequency bands such that the initial signal along the other corresponding path One of them back-propagates, reflects off the corresponding bandpass filter, and the reflected signals propagating forward through one of the paths are in phase.

For example, the third phase shifting component 724c can be fixed and configured to: (1) phase shift the first frequency band such that the initial signal along the third path (propagating along the first path) Back-propagating, reflecting off the third bandpass filter 313c and transmitting the reflected signal forward through the third path in phase; (2) phase shifting the second frequency band such that at the second frequency (propagating along the second path) The initial signal is in phase with a reflected signal that is backpropagated along the third path, reflected off the third bandpass filter 313c and propagating forward via the third path; and (3) phase shifting the fourth frequency band such that at the fourth The initial signal at frequency (propagating along the fourth path) is in phase with the reflected signal propagating back along the third path, reflected off the third bandpass filter 313c and propagating forward via the third path. Other phase shifting components can be fixed and configured in a similar manner.

Accordingly, DRx module 710 includes a DRx controller 702 that is configured to selectively initiate one or more of a plurality of paths between the input of DRx module 710 and the output of DRx module 710. The DRx module 710 further includes a plurality of amplifiers 314a through 314d, each of the plurality of amplifiers 314a through 314d being disposed along a corresponding one of the plurality of paths and configured to amplify the signal received at the amplifier. The DRx module further includes a plurality of phase shifting components 724a through 724d, each of the plurality of phase shifting components 724a through 724d being along a plurality of The corresponding one of the paths is placed and configured to phase shift the signal through the phase shifting component.

In some implementations, the first phase shifting component 724a is disposed along a first path corresponding to the first frequency band (eg, the frequency band of the first bandpass filter 313a) and configured to pass through the first phase shifting component 724a The second frequency band of the signal (e.g., the frequency band of the second band pass filter 313b) is phase shifted such that the initial signal propagating along the second path corresponding to the second frequency band is at least partially in phase with the reflected signal propagating along the first path.

In some implementations, the first phase shifting component 724a is further configured to phase shift a third frequency band of the signal passing through the first phase shifting component 724a (eg, the frequency band of the third bandpass filter 313c) such that the edge The initial signal propagating along the third path of the third frequency band is at least partially in phase with the reflected signal propagating along the first path.

Similarly, in some implementations, the second phase shifting component 724b disposed along the second path is configured to phase shift the first frequency band of the signal passing through the second phase shifting component 724b such that it propagates along the first path The initial signal is at least partially in phase with the reflected signal propagating along the second path.

FIG. 8 shows that in some embodiments, the diversity receiver configuration 800 can include a DRx module 810 having one or more impedance matching components 834a through 834b. The DRx module 810 includes two paths: an input from the DRx module 810 coupled to the antenna 140; and an output from the DRx module 810 coupled to the transmission line 135.

In the DRx module 810 of FIG. 8 (as in the DRx module 610 of FIG. 6A), the demultiplexer and the band pass filter are implemented as a diplexer 611. The dual 611 includes a first output coupled to the input of the antenna, coupled to the first impedance matching component 834a, and a second output coupled to the second impedance matching component 834b. At the first output, the diplexer 611 outputs a signal that is received at the input (eg, from the antenna 140) and filtered to the first frequency band. At the second output, the diplexer 611 outputs a signal that is received at the input and filtered to the second frequency band.

Each of the impedance matching components 834a through 634d is disposed between the diplexer 611 and the amplifiers 314a through 314b. As described above, each of the amplifiers 314a through 314b is placed along the corresponding one of the paths and is configured to amplify the signal received at the amplifier. put The outputs of the amplifiers 314a through 314b are fed to a signal combiner 612.

The signal combiner 612 includes a first input coupled to the first amplifier 314a, a second input coupled to the second amplifier 314b, and an output coupled to the output of the DRx module 610. The signal at the output of the signal combiner is the sum of the signals at the first input and the second input.

When a signal is received by antenna 140, the signal is filtered by diplexer 611 to a first frequency band and propagates along a first path through first amplifier 314a. Similarly, the signal is filtered by the diplexer 611 to the second frequency band and propagates along a second path through the second amplifier 314b.

Each of the paths can be characterized as a noise index and gain. The noise index for each path is a representation of the degradation in the signal-to-noise ratio (SNR) caused by the amplifier and impedance matching components placed along the path. In particular, the noise index for each path is the decibel (dB) difference between the SNR at the input of impedance matching components 834a through 834b and the SNR at the output of amplifiers 314a through 314b. Thus, the noise index is a measure of the difference between the noise output of the amplifier and the noise output of an "ideal" amplifier (which produces no noise) having the same gain. Similarly, the gain of each path is a representation of the gain caused by the amplifier and impedance matching components placed along the path.

The noise index and gain for each path can be different for different frequency bands. For example, the first path may have an intra-frequency noise index and an intra-frequency gain for the first frequency band, and an extra-frequency noise index and an extra-frequency gain for the second frequency band. Similarly, the second path may have an intra-frequency noise index and an intra-frequency gain for the second frequency band, and an extra-frequency noise index and an extra-frequency gain for the first frequency band.

The DRx module 810 can also be characterized as a different noise index and gain for different frequency bands. In particular, the noise index of the DRx module 810 is the difference in dB between the SNR at the input of the DRx module 810 and the SNR at the output of the DRx module 810.

The noise index and gain for each path (under each frequency band) may depend, at least in part, on the impedance of impedance matching components 834a through 834b (under each frequency band). Therefore, it may be advantageous Yes, the impedance of the impedance matching components 834a through 834b minimizes the intra-frequency noise index for each path and/or maximizes the intra-frequency gain for each path. Thus, in some implementations, each of the impedance matching components 834a through 834b is configured to reduce the intra-frequency noise index of its respective path and/or increase the intra-frequency gain of its respective path (as compared to no A DRx module having the impedance matching components 834a through 834b).

Since the signals propagating along the two paths are combined by the signal combiner 612, the extra-frequency noise generated or amplified by the amplifier can have a negative impact on the combined signal. For example, the extra-frequency noise generated or amplified by the first amplifier 314a may increase the noise index of the DRx module 810 at the second frequency. Thus, it may be advantageous for the impedance of the impedance matching components 834a through 834b to minimize the extra-frequency noise index for each path and/or to minimize the extra-frequency gain for each path. Thus, in some implementations, each of the impedance matching components 834a through 834b is configured to reduce the extra-frequency noise index of its respective path and/or to reduce the extra-frequency gain of its respective path (as compared to no A DRx module having the impedance matching components 834a through 834b).

The impedance matching components 834a through 834b can be implemented as passive circuits. In particular, impedance matching components 834a through 834b can be implemented as RLC circuits and include one or more passive components, such as resistors, inductors, and/or capacitors. The passive components can be connected in parallel and/or in series and can be connected between the output of the diplexer 611 and the input of the impedance matching components 314a through 314b, or can be connected between the output of the diplexer 611 and the ground voltage. In some implementations, impedance matching components 834a through 834b are integrated into the same die as amplifiers 314a through 314b or on the same package.

As noted above, for a particular path, it may be advantageous for the impedance of the impedance matching components 834a through 834b to minimize the intra-frequency noise index, maximize the intra-frequency gain, minimize the extra-frequency noise index, and minimize the extra-frequency gain. . Designed to achieve all four of these goals with only two degrees of freedom (eg, impedance at the first frequency band and impedance at the second frequency band) or other various constraints (eg, component count, cost, die gap) Impedance matching components 834a through 834b can be challenging. Therefore, in some implementations, minimizing the intra-frequency noise index minus the frequency The intra-frequency metric of the inner gain, and minimizes the extra-frequency noise index plus the extra-frequency metric of the extra-frequency gain. It may still be challenging to design impedance matching components 834a through 834b that achieve both of these goals with various constraints. Thus, in some implementations, the intra-frequency metric is minimized by a set of constraints, and the extra-frequency metric is minimized by the set of constraints and additional constraints that do not increase the value of the intra-frequency metric by more than the threshold amount. (eg, 0.1 dB, 0.2 dB, 0.5 dB, or any other value). Thus, the impedance matching component is configured to reduce the intra-frequency noise index minus the intra-frequency gain's intra-frequency metric to within the threshold of the lowest intra-frequency metric, for example, the lowest intra-frequency metric that is subject to any constraints. The impedance matching component is further configured to reduce the out-of-frequency noise index plus the out-of-frequency measure of the out-of-band gain to an intra-frequency limited out-of-frequency minimum, eg, the lowest possible out-of-band metric subject to additional constraints, the additional The constraint is that the intra-frequency metric does not increase by more than the value of the threshold. In some implementations, the composite measure of the intra-frequency metric (by intra-frequency factor weighting) plus the extra-frequency metric (weighted by the out-of-band factor) is minimized by any constraints.

Thus, in some implementations, each of the impedance matching components 834a through 834b is configured to reduce the intra-frequency metric (intra-frequency noise index minus intra-frequency gain) of its respective path (eg, by reducing the frequency) Internal noise index, increased intra-frequency gain, or both). In some implementations, each of the impedance matching components 834a through 834b is further configured to reduce the out-of-frequency metric (extra-frequency noise index plus extra-frequency gain) of its respective path (eg, by reducing the frequency) Noise index, reduced extra-frequency gain, or both).

In some implementations, by reducing the out-of-frequency metric, impedance matching components 834a through 834b reduce the noise index of DRx module 810 in one or more of the frequency bands without substantially increasing the noise index in other frequency bands.

FIG. 9 shows that in some embodiments, the diversity receiver configuration 900 can include a DRx module 910 having adjustable impedance matching components 934a through 934d. Each of the tunable impedance matching components 934a through 934d can be configured to present an impedance controlled by an impedance tuning signal received from the DRx controller 902.

The diversity receiver configuration 900 includes a DRx module 910 having an input coupled to the antenna 140 and an output coupled to the transmission line 135. The DRx module 910 includes multiple paths between the inputs and outputs of the DRx module 910. In some implementations, the DRx module 910 includes one or more bypass paths (not shown) between the inputs and outputs initiated by one or more bypass switches controlled by the DRx controller 902.

The DRx module 910 includes a plurality of multiplexer paths including an input multiplexer 311 and an output multiplexer 312. The multiplexer path includes a number of on-module paths (shown) including input multiplexer 311, bandpass filters 313a through 313d, tunable impedance matching components 934a through 934d, amplifiers 314a through 314d And output multiplexer 312. The multiplexer path can include one or more out-of-module paths (not shown) as described above. As also described above, amplifiers 314a through 314d can be variable gain amplifiers and/or variable current amplifiers.

The tunable impedance matching components 934a through 934b can be adjustable T-shaped circuits, tunable PI circuits, or any other tunable matching circuit. The tunable impedance matching components 934a through 934d can include one or more variable components such as resistors, inductors, and capacitors. The variable components can be connected in parallel and/or in series and can be connected between the output of the input multiplexer 311 and the inputs of the amplifiers 314a through 314d, or can be connected between the output of the input multiplexer 311 and the ground voltage.

The DRx controller 902 is configured to selectively initiate one or more of a plurality of paths between the input and the output. In some implementations, the DRx controller 902 is configured to selectively initiate one or more of a plurality of paths based on a band selection signal received by the DRx controller 902 (eg, from a communication controller). The DRx controller 902 can selectively initiate a path, for example, by enabling or disabling the amplifiers 314a through 314d, controlling the multiplexers 311, 312, or via other mechanisms as described above.

In some implementations, the DRx controller 902 is configured to tune the tunable impedance matching components 934a through 934d. In some implementations, the DRx controller 702 tunes the tunable impedance matching components 934a through 934d based on the band selection signals. For example, the DRx controller 902 can be based on The tunable impedance matching components 934a through 934d are tuned by a frequency band (or sets of frequency bands) indicated by the band select signal and a lookup table associated with the tuning parameters. Thus, in response to the band select signal, the DRx controller 902 can transmit an impedance tuning signal to the tunable impedance matching components 934a through 934d of each active path to tune the tunable impedance matching component (or its variable components) based on the tuning parameters. ).

In some implementations, the DRx controller 902 tunes the tunable impedance matching components 934a through 934d based at least in part on an amplifier control signal that is transmitted to control the gain and/or current of the amplifiers 314a through 314d.

In some implementations, the DRx controller 902 is configured to tune the tunable impedance matching components 934a through 934d of each active path to minimize (or decrease) the intra-frequency noise index and maximize the intra-frequency gain (or Increase), the extra-frequency noise index of each of the other active paths is minimized (or reduced), and/or the extra-frequency gain of each other active path is minimized (or decreased).

In some implementations, the DRx controller 902 is configured to tune the tunable impedance matching components 934a through 934d of each active path to minimize intra-frequency metrics (intra-frequency noise minus intra-frequency gain) (or The out-of-band metric (the extra-frequency noise index plus the out-of-band gain) of each of the other active paths is minimized (or reduced).

In some implementations, the DRx controller 902 is configured to tune the tunable impedance matching components 934a through 934d of each active path such that the intra-frequency metric is minimized (or reduced) by a set of constraints, and other effects The extra-frequency metrics for each of the intermediate paths are minimized (or reduced) by the set of constraints and additional constraints that do not increase the value of the intra-frequency metric by more than the threshold amount (eg, 0.1 dB, 0.2) dB, 0.5dB or any other value).

Thus, in some implementations, the DRx controller 902 is configured to tune the adjustable impedance matching components 934a through 934d of each active path such that the adjustable impedance matching component subtracts the intra-frequency gain from the intra-frequency noise. The intra-frequency metric is reduced to within the threshold of the intra-frequency metric minimum, for example, the smallest intra-frequency metric that is subject to any constraints. DRx controller 902 The tunable impedance matching components 934a through 934d can be further configured to tune each of the active paths such that the adjustable impedance matching component reduces the extra-frequency noise index plus the out-of-frequency metric to the intra-frequency limited The extra-frequency minimum, for example, is subject to a possible minimum outer-frequency metric of the additional constraint that the intra-frequency metric does not increase by more than the threshold amount.

In some implementations, the DRx controller 902 is configured to tune the tunable impedance matching components 934a through 934d of each active path such that the intra-frequency metric (by intra-frequency factor weighting) is added for other active paths. The composite metric of the extra-frequency metrics of each of them (weighted by the out-of-band factors of each of the other active paths) is minimized (or reduced) by any constraints.

The DRx controller 902 can tune the variable components of the tunable impedance matching components 934a through 934d to have different values for different frequency band groups.

In some implementations, the tunable impedance matching components 934a through 934d are replaced with fixed impedance matching components that are not adjustable or controlled by the DRx controller 902. Each of the impedance matching components disposed along a corresponding one of the paths corresponding to one frequency band may be configured to reduce (or minimize) the intra-frequency metric of the one frequency band and reduce (or minimize) other frequency bands An extra-frequency metric of one or more (eg, each of the other frequency bands).

For example, the third impedance matching component 934c can be fixed and configured to: (1) reduce the intra-frequency metric of the third frequency band; (2) reduce the extra-frequency metric of the first frequency band; (3) lower the second frequency band; The out-of-band metric; and/or (4) reducing the out-of-band metric of the fourth frequency band. Other impedance matching components can be fixed and configured in a similar manner.

Accordingly, the DRx module 910 includes a DRx controller 902 that is configured to selectively enable one or more of a plurality of paths between the input of the DRx module 910 and the output of the DRx module 910. The DRx module 910 further includes a plurality of amplifiers 314a through 314d, each of the plurality of amplifiers 314a through 314d being disposed along a corresponding one of the plurality of paths and configured to amplify the signal received at the amplifier. The DRx module further includes a plurality of impedance matching components 934a through 934d, each of the plurality of phase shifting components 934a through 934d along a plurality A corresponding one of the paths is disposed and configured to reduce at least one of an out-of-frequency noise index or an out-of-band gain of the one of the plurality of paths.

In some implementations, the first impedance matching component 934a is disposed along a first path corresponding to the first frequency band (eg, the frequency band of the first band pass filter 313a) and configured to reduce the second corresponding to the second path At least one of an out-of-band noise index or an out-of-band gain of a frequency band (eg, a frequency band of the second band pass filter 313b).

In some implementations, the first impedance matching component 934a is further configured to reduce the out-of-frequency noise index or the out-of-band gain of the third frequency band corresponding to the third path (eg, the frequency band of the third band pass filter 313c) At least one of them.

Similarly, in some implementations, the second impedance matching component 934b disposed along the second path is configured to reduce at least one of an extra-frequency noise index or an extra-frequency gain of the first frequency band.

10 shows that in some embodiments, the diversity receiver configuration 1000 can include a DRx module 1010 having a tunable impedance matching component disposed at the input and output. The DRx module 1010 can include one or more tunable impedance matching components disposed at one or more of the inputs and outputs of the DRx module 1010. In particular, the DRx module 1010 can include an input tunable impedance matching component 1016 disposed at the input of the DRx module 1010, an output tunable impedance matching component 1017 disposed at the output of the DRx module 1010, or both.

It is unlikely that multiple frequency bands received on the same diversity antenna 140 will achieve an ideal impedance match. To match each frequency band using a tight matching circuit, the tunable input impedance matching component 1016 can be implemented at the input of the DRx module 1010 and controlled by the DRx controller 1002 (eg, based on a band selection signal from the communications controller). For example, DRx controller 1002 can tune tunable input impedance matching component 1016 based on a lookup table that associates a frequency band (or sets of frequency bands) indicated by the band selection signal with tuning parameters. Thus, in response to the band select signal, the DRx controller 1002 can transmit the input impedance tuning signal to the adjustable input impedance matching component 1016 to tune the adjustable input impedance matching component (or its variable) according to the tuning parameters. Component).

The adjustable input impedance matching component 1016 can be an adjustable T-shaped circuit, an adjustable PI circuit, or any other adjustable matching circuit. In particular, the adjustable input impedance matching component 1016 can include one or more variable components such as resistors, inductors, and capacitors. The variable components can be connected in parallel and/or in series and can be connected between the input of the DRx module 1010 and the input of the first multiplexer 311, or can be connected between the input of the DRx module 1010 and the ground voltage.

Similarly, where only one transmission line 135 (or at least very few transmission lines) carries signals for many frequency bands, it is unlikely that multiple frequency bands will achieve an ideal impedance match. To match each frequency band using a tight matching circuit, the adjustable output impedance matching component 1017 can be implemented at the output of the DRx module 1010 and controlled by the DRx controller 1002 (eg, based on a band selection signal from the communications controller). For example, DRx controller 1002 can tune tunable output impedance matching component 1017 based on a lookup table that associates a frequency band (or sets of frequency bands) indicated by the band select signal with tuning parameters. Thus, in response to the band select signal, the DRx controller 1002 can transmit an output impedance tuning signal to the adjustable output impedance matching component 1017 to tune the adjustable output impedance matching component (or its variable components) based on the tuning parameters.

The adjustable output impedance matching component 1017 can be an adjustable T-shaped circuit, an adjustable PI circuit, or any other adjustable matching circuit. In particular, the adjustable output impedance matching component 1017 can include one or more variable components such as resistors, inductors, and capacitors. The variable components can be connected in parallel and/or in series and can be connected between the output of the second multiplexer 312 and the output of the DRx module 1010, or can be connected between the output of the second multiplexer 312 and the ground voltage.

11 shows that in some embodiments, the diversity receiver configuration 1100 can include a DRx module 1110 having a plurality of adjustable components. The diversity receiver configuration 1100 includes a DRx module 1110 having an input coupled to the antenna 140 and an output coupled to the transmission line 135. The DRx module 1110 includes a number of paths between the input and output of the DRx module 1110. In some implementations, the DRx module 1110 includes one or more bypass paths (not shown) between the inputs and outputs initiated by one or more bypass switches controlled by the DRx controller 1102.

The DRx module 1110 includes a plurality of multiplexer paths including an input multiplexer 311 and an output multiplexer 312. The multiplexer path includes a number of on-module paths (shown) including: an adjustable input impedance matching component 1016, an input multiplexer 311, bandpass filters 313a through 313d, adjustable impedance matching Components 934a through 934d, amplifiers 314a through 314d, adjustable phase shifting components 724a through 724d, output multiplexer 312, and adjustable output impedance matching component 1017. The multiplexer path can include one or more out-of-module paths (not shown) as described above. As also described above, amplifiers 314a through 314d can be variable gain amplifiers and/or variable current amplifiers.

The DRx controller 1102 is configured to selectively initiate one or more of a plurality of paths between the input and the output. In some implementations, the DRx controller 1102 is configured to selectively initiate one or more of a plurality of paths based on a band selection signal received by the DRx controller 1102 (eg, from a communication controller). The DRx controller 902 can selectively initiate a path, for example, by enabling or disabling the amplifiers 314a through 314d, controlling the multiplexers 311, 312, or via other mechanisms as described above. In some implementations, the DRx controller 1102 is configured to transmit an amplifier control signal to one or more amplifiers 314a through 314d disposed along one or more initiated paths, respectively. The amplifier control signal controls the gain (or current) of the amplifier to which it is sent.

The DRx controller 1102 is configured to tune one or more of the adjustable input impedance matching component 1016, the adjustable impedance matching components 934a through 934d, the adjustable phase shifting components 724a through 724d, and the adjustable output impedance matching component 1017. For example, the DRx controller 1102 can tune the tunable component based on a lookup table that associates the frequency band (or sets of frequency bands) indicated by the band selection signal with the tuning parameters. Thus, in response to the band select signal, the DRx controller 1101 can transmit the tuning signal to the adjustable component (of the active path) to tune the adjustable component (or its variable components) based on the tuning parameters. In some implementations, the DRx controller 1102 tunes the tunable components based at least in part on an amplifier control signal that is transmitted to control the gain and/or current of the amplifiers 314a through 314d. In various implementations, it is possible to fix it without being controlled by the DRx controller 1102. The component replaces one or more of the adjustable components.

It should be appreciated that tuning of one of the adjustable components can affect the tuning of other adjustable components. Thus, the tuning parameters for the first adjustable component in the lookup table can be based on the tuning parameters for the second adjustable component. For example, the tuning parameters for the adjustable phase shifting components 724a through 724d can be based on tuning parameters for the adjustable impedance matching components 934a through 934d. As another example, the tuning parameters for the tunable impedance matching components 934a through 934d may be based on tuning parameters for the tunable input impedance matching component 1016.

Figure 12 shows an embodiment of a flow chart representation of a method of processing an RF signal. In some implementations (and as detailed below as an example), method 1200 is performed by a controller, such as DRx controller 1102 in FIG. In some implementations, method 1200 is performed by processing logic including hardware, firmware, software, or a combination thereof. In some implementations, method 1200 is performed by a processor executing a code stored in a non-transitory computer readable medium (eg, a memory). Briefly, method 1200 includes receiving a band selection signal and routing the received RF signal along one or more tuned paths to process the received RF signal.

Method 1200 begins at block 1210 where the controller receives a band selection signal. The controller may receive the band selection signal from another controller or may receive a band selection signal from a cellular base station or other external source. The band select signal may indicate one or more frequency bands by which the wireless device transmits and receives the RF signal. In some implementations, the band selection signal indicates a group band for carrier aggregation communication.

At block 1220, the controller selectively activates one or more paths of the diversity receiver (DRx) module based on the band selection signal. As described above, the DRx module can include a number of one or more inputs (coupled to one or more antennas) and one or more outputs (coupled to one or more transmission lines) of the DRx module. path. The path can include a bypass path and a multiplexer path. The multiplexer path may include a path on the module and a path outside the module.

The controller can enable or disable the amplifier disposed along the path, via the splitter control signal, and/or by, for example, opening or closing one or more bypass switches, via an amplifier enable signal Or the combiner control signal controls one or more multiplexers or selectively initiates one or more of the plurality of paths via other mechanisms. For example, the controller can open or close the switch disposed along the path or set the gain of the amplifier disposed along the path to substantially zero.

At block 1230, the controller sends a tuning signal to one or more adjustable components disposed along one or more of the initiated paths. The adjustable component can include a tunable impedance matching component disposed at an input of the DRx module, a plurality of tunable impedance matching components disposed along the plurality of paths, and a plurality of tunable phase shifting components disposed along the plurality of paths, respectively One or more of the adjustable output impedance matching components disposed at the output of the DRx module.

The controller can tune the tunable component based on a lookup table that associates the frequency band (or sets of frequency bands) indicated by the band select signal with the tuning parameters. Thus, in response to the band selection signal, the DRx controller can transmit the tuning signal to the adjustable component (of the active path) to tune the adjustable component (or its variable components) based on the tuning parameters. In some implementations, the controller tunes the tunable component based at least in part on an amplifier control signal transmitted to control gain and/or current of one or more amplifiers disposed along one or more initiated paths, respectively.

Figure 13 shows that in some embodiments, some or all of the diversity receiver configurations (e.g., their configurations shown in Figures 3 through 11) may be implemented in whole or in part in a 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. 13, the module 1300 can include a package substrate 1302, and a plurality of components can be mounted on the package substrate 1302. For example, controller 1304 (which may include front end power management integrated circuit [FE-PIMC]), low noise amplifier assembly 1306 (which may include one or more variable gain amplifiers), matching component 1308 (which One or more fixed or adjustable phase shifting components 1331 and one or more fixed or adjustable impedance matching components 1332), multiplexer assembly 1310, and filter bank 1312 (which may include one or more bandpasses) may be included The filter) can be mounted and/or implemented on and/or within the package substrate 1302. Other components, such as a plurality of SMT devices 1314, may also be mounted on package substrate 1302. Although all of the various components are depicted as being disposed on package substrate 1302, it should be understood that some components can 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. The device and/or circuitry 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, the wireless device can include, for example, a cellular telephone, a smart phone, a handheld wireless device with or without telephony functionality, a wireless tablet, and the like.

FIG. 14 depicts an example wireless device 1400 having one or more of the advantageous features described herein. In the context of one or more modules having one or more of the features described herein, generally may be implemented by a dashed box 1401 (which may be implemented, for example, as a front end module), a diversity RF module 1411 ( It can be implemented as, for example, a downstream module) and a diversity receiver (DRx) module 1300 (which can be implemented, for example, as a front end module) to depict such modules.

Referring to Figure 14, a power amplifier (PA) 1420 can be configured from a known manner and operates to generate an RF signal to be amplified and transmitted and the transceiver 1410 processing the received signal receives its respective RF signal. Transceiver 1410 is shown interacting with a baseband subsystem 1408 that is configured to provide conversion between data and/or voice signals suitable for the user and RF signals suitable for transceiver 1410. The transceiver 1410 can also be in communication with a power management component 1406 configured to manage power for operation of the wireless device 1400. The power management component can also control the operation of the baseband subsystem 1408 and the modules 1401, 1411, and 1300.

The baseband subsystem 1408 is shown coupled to the user interface 1402 to facilitate providing various inputs and outputs to the user and voice and/or data received from the user. The baseband subsystem 1408 can also be coupled to a memory 1404 that is configured to store data and/or instructions that facilitate operation of the wireless device and/or to provide storage of information to the user.

In the example wireless device 1400, the output of the PA 1420 is shown as being matched (via the respective matching circuit 1422) and routed to its respective duplexer 1424. These amplified and filtered signals can be routed via antenna switch 1414 to primary antenna 1416 for transmission. In some embodiments, duplexer 1424 may allow for simultaneous transmission and reception operations using a common antenna (eg, primary antenna 1416). In Figure 14, the received signal is shown as being routed to Includes, for example, the "Rx" path of a low noise amplifier (LNA).

The wireless device also includes a diversity antenna 1426 and a diversity receiver module 1300 that receives signals from the diversity antenna 1426. The diversity receiver module 1300 processes the received signals and transmits the processed signals to the diversity RF module 1411 via the transmission line 1435, which further processes the signals prior to feeding the signals to the transceiver 1410.

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

Unless the context clearly requires otherwise, the words "comprising" and the like should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning throughout the specification and claims. In other words, "including but not limited to" Meaning to explain. The word "coupled," as used generally herein, refers to two or more elements that may be directly connected or connected by means of one or more intermediate elements. In addition, when used in the present application, the words "herein," "above," "hereafter," and the like, are intended to refer to the present application as a whole and not to any particular portion of the application. The singular or plural number of words in the above embodiments may also include plural or singular numbers, respectively, as permitted by the context. The word "or", which refers to the list of two or more items, encompasses all of the following explanations of the term: any of the items in the list, all items in the list, and any combination of items in the list .

The above detailed description of the embodiments of the invention is not intended to be It will be appreciated by those skilled in the art that, <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; For example, although a process or block is presented in a given order, alternative embodiments can perform routines with steps in a different order, or employ a system with blocks, and can be deleted, moved, added, sub-, combined And / or modify some handlers or blocks. Each of these handlers or blocks can be implemented in a number of different ways. Also, although sometimes the handler or block is shown as being executed continuously, such processing Programs or blocks may alternatively be executed simultaneously or may be performed at different times.

The teachings of the present invention provided herein are applicable to other systems and need not be the systems described above. The elements and acts of the various embodiments described above can be combined to provide further embodiments.

Although a few embodiments of the invention have been described, these embodiments are presented by way of example only and are not intended to limit the scope of the invention. In fact, the novel methods and systems described herein may be embodied in a variety of other forms. Also, various omissions, substitutions and changes may be made in the form of the methods and systems described herein without departing from the spirit of the invention. The accompanying claims and their equivalents are intended to cover such forms or modifications

135‧‧‧ transmission line

140‧‧‧Diversity Antenna

314a‧‧Amplifier

314b‧‧Amplifier

600‧‧‧ Diversity Receiver Configuration

610‧‧‧DRx module

611‧‧‧Dualizer

612‧‧‧Signal combiner

624a‧‧‧ phase matching component / phase shifting component

624b‧‧‧ phase matching component / phase shifting component

Claims (20)

A receiving system comprising: a first amplifier disposed along a first path corresponding to a first frequency band, one of the input of the receiving system, and one of the outputs of the receiving system; the edge corresponding to a second frequency band a second amplifier disposed in a second path between the input of the receiving system and the output of the receiving system; and a first phase shifting component disposed along the first path and configured to enable The second frequency band phase shifting through a signal of one of the first phase shifting components is based on phase shifting caused by the first amplifier in the second frequency band. The receiving system of claim 1, further comprising a second phase shifting component disposed along the second path and configured to pass the signal of one of the second phase shifting components A frequency band phase shift is based on phase shifting caused by the second amplifier in the first frequency band. The receiving system of claim 1, wherein the first phase shifting component is further configured to phase shift a third frequency band of the signal passing through the first phase shifting component based on the third frequency band, One phase is caused by the first amplifier. The receiving system of claim 1, wherein the first phase shifting component is configured to phase shift the second frequency band of the signal passing through the first phase shifting component based on passing through the first amplifier Phase shifting caused by the inversion propagation and forward propagation through the first amplifier. The receiving system of claim 1, further comprising a multiplexer configured to separate an input signal received at the input of the receiving system into a first frequency band along the first path A first signal and a second signal propagating along a second frequency band along the second path. The receiving system of claim 5, wherein the first phase shifting component is configured to pass through the The second frequency band of the signal of the first phase shifting component is phase shifted, which is further based on phase shifting by one of the multiplexers under the second frequency band. The receiving system of claim 5, wherein the first phase shifting component is integrated into a first impedance matching component disposed between the multiplexer and the first amplifier. The receiving system of claim 7, wherein the first impedance matching component has one impedance selected based on the first frequency band to reduce a noise index for the first path of the first frequency band or for the first frequency band At least one of the gains of one of the first paths. The receiving system of claim 8, wherein the first impedance matching component has an impedance selected based on the second frequency band to reduce a noise index for the first path of the second frequency band or for the second frequency band At least one of the gains of one of the first paths. The receiving system of claim 5, further comprising a signal combiner configured to combine the first signal and the second signal. The receiving system of claim 10, wherein the first phase shifting component is disposed between the signal combiner and the first amplifier. The receiving system of claim 1, wherein the first phase shifting component is configured to phase shift the second frequency band of the signal passing through the first phase shifting component such that one of the initial paths along the second path propagates The signal and one of the reflected signals propagating along the first path are at least partially in-phase. The receiving system of claim 12, wherein the first phase shifting component is configured to phase shift the second frequency band of the signal passing through the first phase shifting component such that the initial signal and one of the reflected signals An amplitude of the sum is greater than an amplitude of the initial signal. The receiving system of claim 12, wherein the first phase shifting component is configured to phase shift the second frequency band of the signal passing through the first phase shifting component such that the initial signal and the reflected signal have A phase difference of an integer multiple of 360 degrees. The receiving system of claim 1, wherein the first phase shifting component is an adjustable phase shifting component configured to phase shift the second frequency band of the signal passing through the first phase shifting component The controller receives an amount of phase shift tuning signal control. The receiving system of claim 1, wherein the first phase shifting component is a passive circuit. A radio frequency (RF) module includes: a package substrate configured to receive a plurality of components; and a receiving system implemented on the package substrate, the receiving system comprising: along a first a first amplifier disposed in a first path between one of the input of the receiving system and one of the outputs of the receiving system, along a second frequency band, the input of the receiving system, and the receiving system a second amplifier disposed between the output and a second phase shifting component disposed along the first path and configured to pass the signal of one of the first phase shifting components The second frequency band is phase shifted based on one of the phase shifts caused by the first amplifier in the second frequency band. The RF module of claim 17, wherein the RF module is a divergent receiver front end module. A wireless device comprising: a first antenna configured to receive a first radio frequency (RF) signal; a first front end module (FEM) in communication with the first antenna, the first The FEM includes a package substrate configured to receive a plurality of components, the first FEM further comprising implementing a receiving system on the package substrate, the receiving system comprising: corresponding to a first frequency band, at the receiving system a first amplifier disposed in a first path between an input and an output of the receiving system, along a portion corresponding to a second frequency band, the input of the receiving system, and the output of the receiving system a second amplifier disposed in the second path, and a first phase shifting component disposed along the first path and configured to pass the second signal of one of the first phase shifting components Frequency band shifting based on one phase shift caused by the first amplifier in the second frequency band; and a transceiver configured to output from one of the first FEM modules via a transmission line A processed version of the first RF signal is received, and a data bit is generated based on the processed version of the first RF signal. The wireless device of claim 19, further comprising a second antenna configured to receive a second radio frequency (RF) signal and a second FEM in communication with the second antenna, the transceiver configured A processed version of the second RF signal is received from an output of the second FEM, and the data bits are generated based on the processed version of the second RF signal.