GB2527186A

GB2527186A - Apparatus and methods for multi-band radio frequency signal routing

Info

Publication number: GB2527186A
Application number: GB1506073.4A
Authority: GB
Inventors: Stephane Richard Marie Wloczysiak
Original assignee: Skyworks Solutions Inc
Current assignee: Skyworks Solutions Inc
Priority date: 2014-04-22
Filing date: 2015-04-10
Publication date: 2015-12-16
Anticipated expiration: 2035-04-10
Also published as: GB201506073D0; DE102015207219A1; GB2527186B

Abstract

A mobile device includes an antenna switch module, a diversity module and one or more diversity antennas. The diversity module 30 processes diversity signals received on the one or more diversity antennas 31, 32 to generate a high-band signal (e.g. greater than 2.3 GHz), a mid-band signal (e.g. between 1 GHz and 2.3 GHz) and a low-band signal (e.g. less than 1 GHz). The diversity module 30 generates a combined low-band / high-band signal, and provides the mid-band signal and the combined low-band / high-band signal to the antenna switch module. The mobile device may include a diplexer 37 to generate the combined low-band / high-band signal. In one arrangement, the diversity module 30 may include a multi-throw switch (81 fig.4) to provide the low-band signal to a shared low-band / high-band terminal in a first state, the high-band signal to the shared low-band / high-band terminal in a second state, and the combined low-band / high-band signal to the shared low-band / high-band terminal in a third state.

Description

APPARATUS AND METHODS FOR MULTI-BAND RADIO FREQUENCY SIGNAL

ROUTING

BACKGROUND

Field

t000IT Embodiments of the itwention relate to electromc systems, and in particular, to radio frequency (RF) electronics.

Description of the Related Technology

100021 An RI;, system can include antennas for receiving and/or transmitting RF signals. However, there can be several components in an RF system that may need to access to the antennas. For example, an RF system can include different transmit or receive paths associated with diffetent frequency bands, d'fferent communication standards, and/or different power modes, and each path may need access to a particular antenna at certain instances of time, 100031 An antenna switch module can be used to electrically connect a particular antenna to a particular transmit or receive path of the RF system, thereby allowing multiple components to share antennas. In certain configurations, an antenna switch module is in communication with a diversity module, which processes signals that are received and/or transmitted using one or more diversity antennas.

SUMMARY

t0003ai The invention is defined by the independent claims to which reference should be made.

0004 In certain embodiments, the present disclosure relates to a mobile device.

The mobile device includes at least one diversity antenna, a diversity module electrically coupled to the at least one diversity antenna, and an antenna switch module. The diversity module is electrically coupled to the at least one diversity antenna, and is configured to generate a high band (HB) signal a mid band (MB) signal, and a low band (LB) s.gnal based on processing one or more diversity signals received from the at least one diversity antenim.

The HB signal has a frequency content that is greater than a frequency content of the MB I..,-signal and the MB signaL has a frequency content that is greater than a frequency content of the LB signal The diversity module is thrthei configLre to gencrate a combined LB/FIB signal based on combining the LB signal aid the HB signal Tne antenna sw Lch module is configured to receive the MB signal and the combined LB/I-TB signal from the diversity module.

In a number of embodiments, the frequency content of the LB signal is less than I GFIz, the frequency content of the MB signal is between I 0Hz and 23 0Hz, and the frequency content of the HB signal is greater than 2 3 Gb{e [0006J In various embodiments, the mobile device further includes a transceiver and one or more primary antennas, and the transceiver is electrically coupled to the one or more primary antennas via the antenna switch module.

100071 Fn some embodiments, the diversity module includes a diplexer configured to generate the combined LB/HB signal based on the LB signal and the I-LB signal.

100081 Accordingly to certain embodiments, the diversity module includes a LB processing circuit configured to generate the LB signal, a MB processing circuit configured to generate the MB signal, and a HB processing circuit configured to generate the FIB signal.

[0009] In some embodiments, the LB processing circuit includes a first filter and a first LNA arranged in a cascade, the MB processing circuit includes a second filter and a second LNA arranged in a cascade, and the I-LB processing circuit includes a third filter and a third LNA arranged in a cascade.

[0010] In various enibodiments, the mobile device Farther includes a diversity antenna terminal configured to receive a combined MB/nB diversity signal, and a band seLction switLh miuding an input eleLUlcally coupled to the d'versity antenna terrnuial, a first output electrically coLpied to an input of the MB proccssu'g cutuit and a seond output electrically coupled to an input of the 1-TB processing circuit.

100111 In certain embodiments, tile present. disclosure relates to a method of front end signal processing in a mobile device. The method includes receiving one or more diversity signals from at least one diversity antenna and generating a FIB signal, a MB signal, and a LB signal based on processing the one or more diversity signal' using a dneisiw module. The HB signal has a frequency content that is greater than a frequency content of the MB signal, and the MB signal has a frequency content that is greater than a frequency content of the LB signal. The method further includes generating a combined LB/HB signal based on combining the LB signal arid the FIB signal using the diversity module, providing the MB signal to an antenna switch module over a first signal route, and providing the combined LB/I-TB signal to the antenna switch module over a second signal route.

10012] According to a number of embodiments, the frequency content of the LB signal is less than I 0Hz, the frequency content of the MB signal is between i 0Hz and 2.3 0Hz, and the frtqucncy content of die KB signal s gre4tcr tran 2 3 GH7 100131 In vanous embodiments thc method turthei 1nchides teceivmg one or more primary signals from at least one primary antenna, and providing the one or more primary signals to the antenna switch module.

10M41 In some embodiments generating the combined LBIHB signal includes combining the F B signa1 and the HB signal using a diplexe; 100151 In certain embodiments, the present disclosure relates to a diversity module for a mobile device. The diversity module includes a LB processing circuit configured to generate a LB signal based on processing one or more diversity signals, a MB processing circuit configured to gencrate a MB signal based on processing the onc or more diversity signals, and a I-lB processing circuit configured to generate a HR signal based on processing the one or more diversity signals. The MB signal has a frequency content that is greater than a frequency content of the LB signal, and the HB signal has a frequency content that is eater than a frequency content of the MB signal. The diversity module further includes a MB terminal configured to receive the MB signal, a shared LB/RB terminal, and a multi-throw switch electrically coupled to the shared LB/HB ternrrial. I'he multi4hrow switch is configured to provide the LB signal to the shared LB/I-LB terminal in a first state and to provide the HB signal to the shared LB/FIB terminal in a second slate.

[0016] According to various embodiments, the frequency content of the LB signal is less than I 0Hz. the frequency content of the MB signal is between 1 0Hz and 3.3 0Hz, and the frequency content of the HB siunal is greater than 2.3 0Hz.

[9017j In some embodiments, the diversity module further includes a dipiexer configured to combine the LB signal and the HB signal to generate a combined LB/HB signal, and the multi-throw switch is configured to provide the combined LB/KB signal to the shared LB/HB terminal in a third state. In certain embodiments, the diversity module _3.

further includes a first switch electrically coupled between an output of the JIB processing circuit and a first input of the dipiexer, and a second switch electrically coupled between an output of the LB processing circuit and a second input of the diplexer. In various embodiments, the first and second switches are configured to close when the multi-throw switch operates in the third state and to open when the multi-throw switch opcrates in the first or second states.

jOOlSJ in a number of embodiments, the LB processing circuit includes a first filter and a first LNA arranged in a cascade, the MB processing circuit includes a second filter and a second LNA arranged in a cascade, and the i-lB processing circuit includes a third filter and a third LNA arranged in a cascade.

0019J In various embodiments, the diversity module further includes a first diversity antenna teumnal configured to reeive a LB di ersity signal, and the flist uvenity antenna terminal is electrically coupled to an input of the ES processing circuit. In some embodiments, the diversity module further includes a second diversity antenna terminal configured to receive a combined MB/I-LB diversity signal, and a hand selection switch including an input electrically coupled to the second diversity antenna tenninal, a first output electrically coupled to an input of the MB processing-circuit, and a second output electrically coupled to an input of the JIB processing circuit.

(0020] According to sonic en-ubodiments, the LB processing circuit includes a plurality of low band filters having different frequency ranges, the MB processing circuit includes a plurality of mid band filters having different frequency ranges, and the HE processing circuit includes a plurality of high band filters having different frequency ranges.

[00211 In certain embodiments, the present disclosure relates to a diversity module The diversity module includcs a fir5t antcnna-cide multi-throw switch, a second antenna-side multi-throw switch, a first transceiver-side multi-throw switch, a second transceiver-side multi-throw switch, a LB processing circuit configured to generate a LB signal, a MB processing circuit configured to generate a MB signal having a frequency content that is greater than a frequency content of the LB signal. and a JIB processing circuit configured to generate a 1113 signal having a frequency content that is greater than the fiequency content of the MB signat Tre 1 8 pro.csing ircuit lb eletnca1ly coupled in a first signal path between the first antenna-side multi-throw switch and the first transceiver-side multi-throw switch, the MB processing circuit electrically coupled in a second signal path between the second antenna-side multi-throw switch and the second transceiver-side multi-throw switch and Ice HB procesng circuit is electrically coupled n a third sign'il path between the second antenna-side multi-throw switch and the first transceiver-side multi-throw switch.

100221 In a number of embodiments, the frequency content of the LB signal is less than I GHz, the frequency content of the MB signal is between 1 (1Hz and 2.3 (1Hz, and the trequcncy content of the FIB cignal!S greater than 2 3 GHz O023j In various embodiments, the diversity module further includes a first transmit bypass path between the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch, and a second transmit hwass path between the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch.

100241 According to certain embodiments, the diversity module is operable in a plurality of modes including a normal operating mode and a swap mode. Additionally, the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch are configured to select the first transmit bypass path in the swap mode, and the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch are configured to select the second transmit bypass path in the swap mode.

100251 In some embodiments, the diversity module further includes a first diversity antenna terminal electrically coupled to the first antenna-side multi-throw switch, a second diversity antenna terminal electrically coupled to the second antenna-side multi-throw switch, a first bidirectional terminal electrically coupled to the first transceiver-side multi-throw switch, and a second bidirectional terminal electrically coupled to the second transceiver-side multi-throw switch.

100261 In vanois embodiments, the diversity module is opuable in a p]urahty of mocks including a normal operating mode and a swap mode, and the first transceiver-side multi-throw swjtch is configured to provide one of the LB signal or the HB signal to the first bidirectional terminal in the normal operating mode, and the second transceiver-side multi-throw switch is configured to provide MB signal to the second bidirectional terminal in the normal operating mode.

-

[0027 In some embodiments, the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch are configured to electrically couple the first bidv-ectmnal tenmnal to the fist diversity antenna teiminal via the first t!ansmEt bypass path in the swap mode, arid the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch are configured to electrically couple the second bidirectional terminal to the second diversity antenna teiminal via the second transmit bypass path in the swap mode.

[0028J According to a number of embodiments, the LB processing circuit includes a first filter and a first LNA arranged in a cascade, the MB processing circuit includes a second filter and a second LNA arranged in a cascade, and the HB processing circuit includes a third filter and a third LNA arranged in a cascade.

[0029] In certain embodiments, the present disclosure relates to a mobile device.

The mobile device includes a transceiver, an antenna switch module, at least one diversity antenna, and a diversity module that includes a transceiver-side and an antenna-side. The diversity module is electrically coupled to the transceiver via the antenna switch module on the transceiver-side and is electrically coupled to the at least one diversity antenna on the antenna-side. The diversity module includes a first antenna-side multi-throw switch, a second antenna-side multi-throw switch, a first transceiver-side ntulti--tbrow switch, a second transceiver-side multi-throw switch, a LB processing circuit, a MB processing circuit, and a FIB processing circuit. The LB processing circuit is electrically coupled in a first signal path between the first antenna-side multi-throw switch and the first transceiver--side muhi-throw switch, the MB processing circuit is electrically coupled in a second signal path between the sccond antenna-side multi-throw sssitch and thc sccond transceiver-side multi throw switch and the FIB processing circuit is electrically coupled in a third signal path between thc second antenna-side multi-throw switch and the first transceiver-side multi-throw switch.

j0030] In various embodiments, the LB processing circuit is configured to generate a I B signal based on pi occsslnL one or more diversity signals received from the at east one diversity antenna the MB processing circuit is configured to generate a MB signal having a frequency content that is greater than a frequency content of the LB signal based on processing the one or more diversity signals, and the 1-1.3 processing circuit is configured to generate a HR signal having a frequency content that is greater than the frequency content of the MB signal based on processing the one or more diversity signals.

[0031] In certain embochncnts, the frequen> content of the LB signal is less than I GHz, the frequency content of the MB signal is between I Cfl-lz and 2.3 GHz-, and the frequency content of the HR signal is greater than 13 GHz.

[0032] According to some embodiments, the diversity module Itrther includes a first transmit bypass path between the first transceiver-side multi-throw switch and thc first snternia-side muiti-throw switt 11, a-id a second transmit bypass path botwet n the sccond transceiver-side multi-throw switch and the second anteirna-sidc multi--throw switch.

[0033J In various embodiments, the diversity module is operable in a plurality of modes including a normal operatmg node and a s'van mode, the flrct transcciersidc mulL-throw switch and the first antenna-side multi-throw swit h. mfigurcd to select the first transmit bypass path in the swap mode, and the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch configured to select the second transmit bypass path in the swap mode.

[00341 In certain embodiments, the first nansc'cner sdc rn di throw switch is configured to select an output of the FIB processing circuit or an output of the LB processing circuit in the normal operating mode, and the secand transceiver-side multi-throw switch is configured to select an output of the MB processing circuit in the nonnal operating mode.

00351 In vanous embodiments, the [B processing cuetut includes a first filtei and a first LNA arranged in a cascade, the MB processing circuit includes -a second filter and a second LNA arranged in a cascade, and the I-lB processing circuit includes a third filter and a thira LNA arrangcd in a cascath [00361 According to cerlam embodimerts the mobile dc-vice further incL..des ore or more primary antennas, and thc transceiver is electrically coupled to the one or more primary antennas via the antenna switch module.

[00371 In certain cirbodunent&, the present diselosme telates o a method o signal processing in a diversity module. The method includes receiving one or more diversity signas using at least one dnersit antenna, and genetating a LB signal based on processing the one or more diversity signals using a LB processing circuit that is electrically coupled in a first signal path between a first antenna-side multi-throw switch and a first transceiver-side multi-throw switch. The method further includes generating a MB signal based on processing the one or more diversity signals using a MB processing circuit that is electrically coupled in a second signal path between a second antenna-side multi-throw switch and a second transceiver-side multj-throw switch, the MB signal having a frequency content that is greater than a frequency content of the LB signal. The method further includes generating a HB signal based on processing the one or more diversity signals using a 1113 processing circuit that is electrically coupled in a third signal path between the second antenna-side multi-throw switch and the first transceiver-side multi-throw switch, the HB signal having a Irequency content that is greater than the frequercv uontcn of tne MB signa' [0038] In various embodiments, the method further includes operating the diversity module in one of a plurality of operating modes including a normal operating mode and a bypass mode, selecting the LB signal or the FIB signal using the first transceiver-side multi-throw switch when the diversity module is in the normal operating mode, and selecting the MB signal using the second transceiver-side multi-throw switch when the diversity module is in the nonnal operating mode.

[0039] According to some embodiments, the method further includes selecting the first transmit bypass path using the first transceiver-side multi-throw switch arid the first antenna-side multi-throw switch when the diversity module is in the swap mode, and selecting the second tiansmt bypass path using the sccond traxmceuver-sidc nmlti-throw switch and the second antenna-side multi-throw switch when the diversity module is in the swap mode.

100401 In a number of embodiments, the frequency content of the LB signal is Ios than I OH', the trequency content of the MB signal is between 1 OH; and 2 1 GIl,, and the frequency content of the HB signal is greater than 2.3 0Hz.

BRIEF DESCRIPTION OF TIlE DRAWINGS

10040a1 Embodiments of the invention will now be described) by way of example only, and with reference to the accompanying drawings, in which: 100411 Figure 1 is a schematic block diagram of one example of a wireless device. 8..

[0042J Figure 2 is a schematic block diagram of a radio frequency (RF) system according to one embodiment [00431 Figure 3 is a schematic block diagram of an RF ntem according to another embodiment.

[00441 Figure 4 is a schematic block diagram of an 1ff system according to another embodiment.

[00451 Figure 5 is a schematic block diagram of one embodiment of an RE system including a diversity module and an antenna switch module.

[00461 Figuie 6 is a sthcmatic block diagram of an RI system accordug tO another embodiment.

10047 Figure 7 is a schematic block diagram of an RE system according to another embodiment.

I0048 Figure 8 is a schematic block diagram of a diversity module according to another embodiment [0049j Figures 9i\ and 9B are schematic block diagrams of Rb systems.

100501 Figure 10 is a schematic block diagram of another embodiment of an RE system including a diversity module and an anterma switch module.

DE1'AiLED DESCRIPTION OF EMBODIMENTS

100511 The headings provided herein, if any, are for convenience only and do not necessarily affect the scope or meaning of the claimed invention.

100521 Figure 1 is a schematic block diagram of one example of a wireless or mobile device II. The mobile device 11 can include radio frequency RF) modules implementing one or more features of the present disclosure.

[00531 The example mobile device 1 I depicted in Figure 1 can represent a multi-band andior multi-mode device such as a multi-handImu1timode mobile phone. By way of examples, Global System for Mobile (GSM) communication standard is a mode of digital cellular communication that is utilized in many parts of the world. USM mode mobile phones can operate at one or more of four frequency bands: 850 MHz (approximately 824-849 MHz ror Tx, 869-894 MHz for Rx, 900 MHz (approximately 880-915 MHz for Tx.

925-960 MHz for Rx), 1800 Mi-ia (approximately 1710-1785 MHz tbr Tx, 1805-1880 MHz for Rx). and 1900 MHz (approximately 1850-1910 MHz for Tx, 1930-1990 MHz for Rx).

Variations and/or regional/national implementations of the GSM bands are also utilized in different parts of the world.

100541 Code division multiple access (CDMA) is another standard that can be implemented in mobile phone devices. Tn certain implementations, CDMA devices can operate in one or more of 800 MHz, 900 MHz, 1800 MHz and 1900 MHz hands, while certain W-CDMA and Long Term Evolution (LTE) devices can operate over, for example, 22 or more radio frequcnc spectrum bands I0055 RF modules of the present disclosure ean be used within a mobile device implementing the foregoing example modes and/or bands, and in other communication standards. For example, 3G. 4G, LTE, and Advanced EYE are non--limiting examples of such standards.

[00561 In the illustrated embodiment, the mobile device 11 includes an antenna switch module 12, a transceiver 13, one or more primary antennas 14, power amplifiers 17, a control component 18, a computer readable medium 19, a processor 20, a battery 21, one or more diversity antennas 22, and a di%ersity module 23 10057] The transceiver 13 can generate RF signals for transmission via the primary antenna(s) 14 and/or the diversity antenna(s) 2:2, Furthermore, the transceiver 13 can receive incoming RF signals from the primary antenna(s) 14 and/or the diversity antenna(s) 22. it will he understood that various functionalities associated with transmitting and receiving of RF signals can he achieved by one or more components that are collectively represented in Figure 1 as the transceiver 13. For example, a single component can be configured to provide both transmitting and receiving flinutionalities ln anothcr ixample, transmitting and receiving fhnctionahties can be provided by separate components.

100581 Tn Figure 1, one or more output signals from the transceiver 13 are depicted as being provided to the antenna switch module 12 via one or more transmission paths 15. In the example shown, different transmission paths 15 can represent output paths associated with different bands and/or different power outputs. For instance, the two different paths shown can represent paths associated with different power outputs (e.g.. low power output and high pow-cr output), and/or paths associated with different bands. The transmit paths 15 can include one or more power amplIfiers 17 to aid in boosting a RF signal having a relatively low power to a higher power suitable for transmission. Although Figure I illustrates a configuration using two transmission paths 15, the mobile device II can he adapted to include inure ci fewer transmission paths 15 [00591 In Figure 1, one or more receive signals are depicted as being provided from the antenna switch module 12 to the transceiver 13 via one or more receiving paths 16.

In the example showii, different receiving paths 16 can represent paths associated with different hands. For example, the four example paths 16 shown can represent quadband capability that some mobile devices are provided with. Although Figure 1 illustrates a configuration using four receiving paths 16, the mobile device Ii can he adapted to include more or fewer receiving paths 16.

100601 10 facilitate switching oet; ecu reec ye andior transmit paths, the antenna switch module 12 can be used to electrically connect a particular antentia to a selected transmit or receive path. Thus, the atuenna switch module 12 can provide a number of switching finctionalities associated with operation of the mobile device Ii. The antenna switch module 12 can include one or more multi4hrow switches configured to provide functionalities associated with, for example, switching between different bands, switching between different power modes, switching between transmission and receiving modes, or some combination thereof. The antenna switch module 12 can also he configured to provide additional functionality, including filtering andior duplexing of signals.

100611 Fiire I illustrates that in certain embodiments, the control component 18 can be provided thr controlling various control functionalities associated with operations of the antenna switch module 12, the diversity module 23, and/or other operating component(s).

For example, the control component 18 can provide controi signals to the antenna switch module 12 and/or the diversity module 23 to control electrical connectivity to the primary antenna(s) 14 and/or diversity antenna(s) 22, for instance, by setting states of switches.

100621 In certain embodiments, the processor 20 can he configured to facilitate implementation of various ptocets on the mobile devic.z 11 The processor 20 can be a geneial purpose Lomputcr, pceia1 purpose computer, or other programmahie data piocessing apparatus, In certain implementations, the mobile device ii can include a computer-readable memory 19, which can include computer program instructions that may be provided to and executed by the processor 20.

-1. 1- 100631 The battery 21 can be any suitable battery for use in the mobile device 11, including, for example, a lithium-ion battery.

100641 The illustrated mobile device 11 includes the diversity antenna(s) 22, which can help improve the quality and reliability of a wireless link relative to a configuration in which a mobile device only includes primary antenna(s) For example, including the diversity antenna(s) 22 can reduce iine-ofsight losses and/or mitigate the impacts of phase shifts, time delays, and/or distortions associated with signal interference of thc pnmnai', antenna(s) 14 100651 As shown in Figure 1, the diversity module 23 is electrically couplcd to the diversity antenna(s) 22. The diversity module 23 can he used to process signals received and/or signals transmitted using the diversity antenna(s) 22. In certain configurations, the diversity module 23 can be used to provide filtering, amplification, switching, and/or other processing.

Examples of Diversity Modules with Shared Low Rand and High Band Terminal 0066I Using one or more primary antennas and one or more diversity antennas in a mobile device can improve quality of signal reception. For example, the diversity antenna(s) can piovide adduional sampling of radio frequency (1ff) signals in the vcinity of the mobile device. Additionally, a mobile device's transceiver can be implemented to process the signals recened by the pinnary and diversit antennas to obta,n a receive signal of higher energy and/or improved fidelity relative to a configuration using only primary antenna(s).

100671 To reduce the correlation between signals received by the primary and diversity antennas and/or to enhance antenna isolation, the primary and diversity antennas can he separated by a relatively large physical distance in the mobile device. For example, the dweisity antenna(s) can N. posthonc.d ncar the top ot he nmobie device and the pumaly antenna(s) can he positioned near the bottom of the mobile device or vice-versa, 100681 Ihe mobile device's trarsceiver can transmit oi eceive signals using the pnntary anten a(s), which the tiansceiver can communicate with via an antenna switch module. To meet or exceed signal communication specifications, the transceiver, the antenna switch module, andior the primary antenna(s) can he in relatively close physical proximity to one another in the mobik deuce configuring the mobile device in trw, manner can proside rclatively small signal loss, Io' noise, and'or high isolation AddiL.onalv the diversity antenna(s) may be ocated E't a relatnely far physi;a] distance from the atenna sw teli module.

100691 To help send diversity signals received on the diversity antenna(s) to the antenna switch module, the mobile device can include a diversity module for providing amplitKation, Iltenag, anwor other process ng to the dncrsitv signals the piocessed diversity signals can be sent trom Lhc diversity module to the antenna switch module via RF signal routes, which can include phone board trace and/or cables.

[0070J Mobile devices can operate using a large number of bands that are separated over a wide range of frequency. For example, certain m bile devices can operate using one or moie Low bards (tor example, RI signal bands having a frequency of I 0H or less), one or more mid bands (for example, RE signal bands having a frequency between 1 0Hz and 2 1 0Hz) and oie or more high bands (for example, RF signal hands haung a frequency greater than 23 0Hz). To aid in communicating over a wide frequency range that includes high, nid, and low hands certain mobile devices can include multiple primary antennas and/or multiple diversity antennas implemented to provide high performance operation to certain bands. However, other configurations are possible, such as implementations using one primary antenna and/or one diversity antenna. In such configurations, the mobie device can include a diplexer or other suitable circuitry for separating signals associated with difièrent frequency bands.

100711 Provided herein are apparatus and methods for multi-band RE signal routing In certain configurations, a monile device includes an anrenna switch moduk, a dis-ersity module, and one or more diversity anteniLas The diveisity module is electn ally coupled to the one or more diversity antennas, and processes diversity signals received on the one or more diversity antennas to generate a high band (FIB) signal, a mid band (MB) signal, and a low hand (LB) signal. Additionally, the diversity module generates a combined LB/JIB signal based on combining the LB signal and the HB signal, and provides the MB signal and the combined LB/HB signal to the antenna switch module.

[00721 The teachings herein can be used to reduce a number of RF signals that are routed in a mobile device For example, configuring the diversity module to output a combined LB/HB signal can reduce a number of traces on a phone board and/or cables used to mute RE signals Decreasing routing congc$ on and or a numer of RE signa1 routes cni reduce a mobile device's size and/or cost.

j0073J Thus, in contrast to a diversity module the generates separate diversity signals fbr low band, mid band, and high band, the diversity modules herein can generate a combined LB/HIB signal, which, is roited over a shared RF signal path to the antenna switch module.

100741 Additionally, the diversity modules herein can provide enhanced performance relative to a diversity module that generates a single diversity signal that combirns low band mid bad, and high band hequenc content For example, the fi&quenL y content of such a diversity signal may he degraded andlor signal content associated with different frequency hands may mix when sending the diversity signal from the diversity module to the antenna switch module over a relatively long RF signal route that may operate ion..'dcslly In contias a combined L13'I 113 signal includes sepalation tn frequency between the low hand and high hand, and thus the fidelity of the combined LB/FIB signal can be maintained when providing the signal from the diversity module to the antenna switch module. Thus, configuring the diversity module to output a MB signal and a combined LB/HB signal advantageously reduces routing congestion and/or a number of RF signal routes while maintaining robust signal quality for diversity signals.

10071 Figure 2 is a schematic block diagram of an RE system 25 according to one embodiment. The Rb system 25 includes a diversity module 30, a first or low band (LB) diversity an4enna 31, and a second or combined mid hand'high band (MB/FIB) divrsfly antenna 32.

100761 Although not illustrated in Figure 2 for clarity, the RF system 25 can include additional structures, such as additional circuitry, tenninals, andior components. For instance, the RE system 25 can represent a portion of a mobile device, such as the mobile detcc 11 of Figure 1 In ccrtam configurations, the civeisit> module 30 can r'p ate in a adio fiequency front end (RFFE' of thc mob le devtce 100771 The illustrated diversity module 30 includes a band selection switch 33, a LB piocessmg cacuit 34, a MB procesirg ircuit 35, a FIB pro.csing crcurt 36, and a LB/FIB diplexer 37. Additionally, the diversity module 3(1 includes a first diversity antenna I 4 terminal ANTI D electrically coupled to the LB diversity antenna 31, a second diversity antenna terminal ANT2_D electrically coupled to the combined MB/HR diversity antenna 32, a first diversity output terminal OUT! D, and a second diversity output terminal OUT2D. Although not illustrated in Figure 2 for clarity, the RF system 25 can include additional structures, such as additional circuitry, terminals, arid/or components.

100781 Although the diversity module 0 i', described as includmg dnersity output terminals, in certain configurauons the first and/or second output terminals OUT1D, OtJT2 D can operate hidirectionally, For example, as will be described in further detail below, a diversity module can he configured to include a swap mode in which diversity output terminals arc used to receive RE signals from a transceiver.

[0079] RF siais generated at the first and second diversity output terminals OUTI D. OUT2I) can he routed from the diversity module 30 to other circuitry or cemponents for further processing. in one embodiment, the diversity module 30 is lcctncally opled to an antenna swItLh module using the first and seond drvenitv output tenrmnais OUT ill OUT2D.

[00801 Ii can be desirable to reduce a number of RE signals that are routed in an RF system. For example. in a mobile device, it can be desired to reduce a number of traces on a printed circuit board (PCB) and/or cables used to route RE signals. Decreasing routing congestion and/or a number of RF signal routes can reduce a mobile device's size and/or cost.

[0081] In one example, a mobile device includes the diversity module 30, the diversity antennas 31, 32, an antenna switch module, and one or more primary antennas. To improve diversity of signals received by the LB diversity antenna 31 and the combined MB/HR diversity antenna 32 relative to those received by the primary antennas, the diversity module 30, the LB diversity antenna 31, and the combined MB/HB diversity antenna 32 can be located at a relatively large physical distance from the antenna switch module and the primary antennas For mstance, th thvertty antennas and the prirnsry drtennF, may he positioned on opposite sides or ends of the mobile device. To reduce RE signal routing in the mobile device, it can be desirable for the diversity module 30 to have a limited number of output terminals and associated RE signal routes.

[00821 Mohie devices can opera e using a largc rumber of bands For example, flain mobile devices L&fl operate using one or rnoie io bands (fo' cxanpl, RF signal bands haung a frequency of I OH; or less), one ot mote mul bands (fbi examp'c, RF signal bands having a frequency between I (3Hz and 23 GHz, and one or more high hands (for example, RF signal bands having a frequency greater than 2.3 0Hz)> 100831 The illustrated diversity module 30 can be used to process LB RF signals, MB RE signals, RB RE signals, or a combination thereof For example, the LB diversity antenna 31 can be used to receive LB diversity signals, which can be processed using the LB processing circuit 34. Additionally, the combined MB/FIB diversity amenna 32 can be used to receive both MB diversity signals and HB diversity signals. Furthermore, the MB processing circuit 35 can be used to process the received MB diversity signals, and the RB processing circuit 36 can be used to process the received FIB diversity signals.

Certain mobile devices that communicate over a wide frequency range including high, mid, and low bands use multiple primary antennas and/or multiple diversity antennas that individually provide high performance operation across certain hands. For example, a particular antenna may be implemented to provide enhanced performance over certain frequency ranges that include one or more bands. However, other configurations are possible, such as implementations using one primary antenna andior one diversity antenna.

100851 As shown in hgure 2, tie band selection switch 33 includes an tnput electrically coupled to the combined MB/HB diversity antenna 32, a first output electrically coupled to an input of the FIB processing circuit 36, and a second output cleetricafly coupled to an input of the MB processing circuit 35. Additionally, the hand selection switch 33 can be set in one a plurality of states For example, the band s.lection switch 11.an be se' in a first state in which the band selection switch 33 can provide a receive signal from the combined MB/i-TB diversity antenna 32 to the MB processing circuit 35 but not to the I-TB processing circuit 36, Additionally, the band selection switch 33 can he set in a second state in which the band >-eiectton 31 provides the nxetv signal troir the Lombined MBiHB diversity antenna 32 to the HB processing circuit 36 but not to the MB processing circuit 35.

Furthermore, the band selection switch 33 can he set in a third state in which the band selection sench 33 p:oides the recclv signal rom the co uhined MI3HB diversity arterria 12 to noth the MB processng cicnt 3 and the HR proe.sing eircwt 16 [00861 Configuring the band selection switch 33 to include a state in which. the receive signal from the combined M13/HB diversily antenna 32 is provided to both the MB processing circuit 35 and. the RB processing circuit 36 can aid in providing carrier aggrtgatien For example, to operete a rnobil dcv cc with widcr hand'idth, the nobue device may communicate based on signals transmitted or received simultaneously across niuhple frequency bands ncluding for example, RF signals at hot]' MB ard HM frequencies. The RE signals can he aggregated to increase the mobile device's signal bandwidth.

F0087 As shown in Figure 2, the LB processing circuit 34 is used to process a receive signal from the LB diversity antenna 31 to generate a LB signal. Additionally, the RB processing circuit 36 is used to process the first output of the hand selection switcb 33 to generate a HE signal. Furthermore, the LB/MB diplexer 37 is used to generate a combined I B JIB output signal on the first thwrsity output tcmnal OUT i_D by combining the LB signal and the RB signal. Additionally, the MB processing circuit 35 is used to process the second output of the hand selection switch 33 to generate a MB signal on the second.

diversity output tenninal OUT2D.

100881 Accordingly, in the illustrated configuration, the diversity module 30 can be used to process LB signals, MB signals, RB signals, and/or a combination th.ereoC whie having a reduced iumber of output termnais I'm cxamplc, thc ilht'trateci configurtion includes a separate MB output terminal and a shared LB/MB output iermin&, rather than including separate output terminals Ibm each of LB. MB, and RB signals. The reduction in output terrmnal.s can lead to a reduction in a number of RF signals routed from the diversity module 3Oto othet components of a mobile device, such as an antenna swncb module 0089 Accordingly, the diversity module 30 can be user! to enhance the integration of a mobile device by reducing a number of RF signals that are routed, including, lhr example, a number of cables and/or PCB traces. Reducing routing congestion and/or a number of RE signal routes can reduce a mobile device's: size and/or cost.

[9090J Additionally, the diversity module 30 can provide enhanced performance and/or lower cost relative to a configuration in which a diplexer is used to recombine MB and I-LB signals fbr cominunic-ation over a. shared MB/i-lB output terminal. For example, MB and HR signals can be spaced relatively closely in fi-equeney and it can he difficult to recombine two RF signals of close frequency spacing with low loss.

100911 For example, a power combiner used to Lorbinc MR nd HR signals nuy provide 3 dB of loss, which may riot be acceptable for an RF front end specification. For instance, in a receiver 3 dB in loss from a power combiner can correspond 1:0 a 3 dB reduction iii the receiver's sensitivity. Although a cavity filter and/or a surface acoustic wave (SAW) filler may provide sufficient frequency selectivity to recombine MB and F-lB signals, such filters can have a cost and/or size that can be prohibitive, particularly fbr mobile technology. The overhead of filtering can be exacerbated in configurations in which a mobile device operates using multiple high frequency bands and/or multiple mid frequency bands, since each band may utilize a separate filter.

100921 Accordingly, the illustrated diversity module recombines LB and HR signals, while touting MB separately The LB and RB signals generatcd by the LB and HR processing circuits 34, 36 can be recombined using a low loss and low cost diplexer, since a frequency separation between the LB and HB signals can be relatively large.

In one embodiment, die LB/RB diplexer 37 recombines LB signals having frequencies in the range of about 717 MHz to about 960 MHz with FIB signals having frequencies in the range of about 2300 MHz to about 2690 MHz Although one example of frcqucncy ranges of the LBIHB diplexer has been providc& other configurations are possible [0094J Figure 3 is a schematic block diagram of an RF system 45 accordirii to another embodiment. The RF system 45 includes a diversity module 50, a diversity antenna SI, and a diversity diplexer 52. The diversity dipicxer 52 is electrically coupled to the diversity antenna 51, and is used to generate a MB/HB diversity receive signal arid a LB diversity receive signal. As shown in Figure 3, the MB/RB diversity receive signal is provided to a first diversity antenna terminal ANTi D of the diversity module 50 and the LB receive signal is provided to a second diversity antenna terminal ANT2 D of the diversity module 50.

0095f In contrast to the F system 2.5 of Figure 2, the RF system 45 of Figure 3 is electrically coupled to only one diversity antenna, which has an output that is split into multiple diversity receive signals associated with different frequency hands, 100961 In certain configurations, a diversity module can tnclude multiple diversity antenna ta'nir'als, wh r cal receive diverRity cgnals from the san-u. oi different diveisity antennas For example, Figure 7 illustrates a configuration mcluding two di-ersity antenna terminals and two diversity antennas, while Figure 3 illustrates a configuration including two diversity antenna terminals and one diversity antenna. Accordingly, the teachings herein are applicable both. to diversity modules that operate in combination with one diversity antenna and to diversity modules that operate in combination with multiple diversity antennas.

[00971 The diversity module 50 includes the band selection switch 33, the LB/FIB dipiexer 37. th.e first and second diversity antenna terminals, ANT 1D. ANT2 D, and the first and second diversity output terminals OUTI D, OUT2 D. which can be as described earlier. The diversity module 50 further includes a LB processing circuit 54, a MB processing circuit 55, and a 1-113 processing circuit 56.

(0098 The diversity module 50 of Figure 3 is similar to the diversity module 30 of Figure 2, except that the diversity module 50 of Figure 3 illustrates a specific configuration of LB. MB, and FIB processing circuits. For example, the illustrated LB processing circuit 54 includes a cascade of a LI) filter 61 and a first low noise amplifier (LNA) 64, Additionally, the illustrated MB processing circuit 55 includes a cascade of a MB filter 62 and a second LNA 65, and the iliusated HB processing circuit 56 includes a cascade of a JIB tiller 63 and a third LNA 66 Although one specili implementation of the LB, MB, and HI) processing circuits has been shown in Figure 3. other configurations are possible.

[00991 Additional details of the RF system 45 can be similar to those described earlier.

[01001 Figure 4 is a schematic block diaam of an RF system 75 according to another embodiment. The RF system 75 includes a diversity module 80, the LB diversity antenna 31, and the combined MB/HI) diversity antenna 32.

101011 The RE system 75 of Figure 4 is similar t.o the RE system 25 of Figure 2, except that the RE system 75 includes a different configuration of a diversity module. For example. the diversity module 80 of Figure 4 includes the band selection switch 33, the LB processing crcutt 54, the MB piocessln c1rcu 55, the HB pmcessu'g cinuit 56, the LB'9B dlpl3xer 37, first and second dn-eis y antenna terminals AN] ii), ANT2 D, and Iir,t and second diversity output terminals OUTI D, OUT2 0, which can be as described earlier.

The RF system 75 or Fiurt 4 1 urthcr includes singk pole three throw SPi F) swuch SI, a first single poie single throw (SPST) switch 82, and a second SPST switch 83.

[0102j As described earlier, the band selection switch 33 can include a plurality of states, including a first state, a second state, and a third state, When in the first state, the band selcthon wvch csn pro'ide a receive ign& fiom the combined MB/HB diversity antenna 32 to the MB processing circuit 55 hut not to the I-lB processing circuit 56.

Ad4itioriaily, when in the second state, the hand selection switch 33 can provide the receive signal from the combined MB/JIB diversity antenna 32 to the FIB processing circuit 56 but not L the MB processing circuit 5c lurtheimoje when in the tlrnd state, the hand sckchon switch 33 can provide th.e receive signal from the combined MB/HR diversity antenna 32 to both the MB processing circuit 55 and the FIB processing circuit 56.

The SP3T switch 81 operates as a multi-throw switch that provides the LB sgnal to the flrt Jiverity output tem nai OU II 1) in a first state, that pros-ides the F{B signal to the first diversity output terminal OUTI D terminal in a second state, and that provides the combined LB/HR signal to the first diversity output terminal OUTi_D terminal in a third state.

101041 The SP3T switch 81 and the first and second SPST switches 82, 83 can enh&ice the performance of the diversity moaulc 80 of Figuic 4 relative to the configuration shown in Figure 3. For example, when the diversity module 80 is processing both HR and LB signals, the first and second SPST switches 82, 83 can be closed, and the SP3T switch 81 can be set to electrically connect an output of the LB/HR diplexer 37 to the first diversity output teiminal OUTID}Toweer whcn the diversity module 80 is processing HR signaF but not LB signals, the first and second SPST switches 82, 83 can be opened, and the SP3T switch 81 can be set to electrically connect an output of the FIB processing circuit 56 to the first diversity output terminal OUT D. Additionally, when the diversity module 80 is processing LB signals hut not FIB signals, the first and second SPST switches 82, 83 can he opened, and the SP3T switch 8! can be set to electrically connect an output of the LB processing circuit 54 to the first diversity output terminal OUT ID.

101051 Accordingly, the SP3T switch 81 anU the first and s:nnd SPST s;&icI'es 82, 83 can enhance the performance of the diversity module 80 by isolating the HR processing circuit's output from the LB/HB diplexer 37 when LB signals are not being processed, and by isolating the LB processing circuit's output from the LB/I-LB diplexer 37 when JIB sign&s are not being processed.

[0106] Additional details of the ftP system 75 can he similar to those described earlier.

[0107] Figure 5 is a Sc hnuue block diagram o2 one embodiment ot an RF system 100 including a LB primary antenna 101, a combined MB/I-lB primary antenna 102, a LB diversity antenna 31, a combined MB/HB diversity antenna 32, a diversity module 80, and an antenna switch module 103.

[0108] Although the RF system 100 of FigureS is illustrated as including the diversity module 80 of Figure 4, the RF system 1 00 of Figure 5 can be implemented with other configurations of diversity modules, including, for example, the diversity modules shown in Figures 2 and 3. Additionally, the antenna switch module 103 can be implemented ii' otht ways> .ru1 thL R l systun 100 can he adapted to include mow or fewer primary antennas and/or d.iversUy antennas.

[0109] The illustrated antenna switch module 103 includes a first SP3T switch 105, a second SF31 switch 106, a LB/I-TB diplexer 107, a MB/HB diplexer 108, a first SPST switch Ill, a second SPST switch 112, a third SPST switch 113, and a fourth SPST switch 114. The antenna switch module 103 further includes a LB primary terminal LBP, a MB p"nnary tenmnal MB_ P a HB primary termiril HB_P, a LB dn-ersny terminal LBD, a MB diversity terminal MBD, and a HB diversity terminal FIBD, which can be electrically coupled to a transceiver (not illustrated in Figure 5). Additionally, the antenna switch module 103 further includes a first primary antenna terminal ANTI_P electrically coupled to the LB primary antenna 101, a second primary antenna terminal ANT2P electrically cokpled to the combined MB/HB primary anenna 102, a first diversity -iput terminal L 1 D electrically coupled to the first diversity output terminal OUTI D of the diversity module 80, and a second diversity input terminal IN2D electrically coupled to the second diversiy output terminal OUT2 D of the diversity module 80.

[0119] As shown in Figure 5. a shared LB/HB signal route 115 and a separate MB sgnaI route 116 are provided between th di' ersity module 80 and the sntcrna switch irodale 103 Althoagh illustrated in schtmattc orm, Me signal routes can inchate PCB trace and/or cables. Thus, using a shared LB!HB signal route can reduce RF signal routing overhead eiative to a coifiguration in wh!ch separate signal routes an provided foi HR intl LB signals.

101111 As shown n Figure 5, the antenna switch module 10 rccer\es combined LB/HB signal and the separate MB signal 11am the diversity module 80.

Additionally the artenna switch module 103 can provide a LB dnemity signal, a MB diversity signal, and a HB diversity signal to a transceiver using the LB diversity terminal LBD, the MB diversity terminal MBD, and the liB diversity terminal 1-IBD, respectively. Furthermore, the transceiver and the antenna switch module 103 are electrically couplcd to one anethet us ng the LB pnrn&y ternun& I 13P, the \4B primary terminal MBP, axi.d the 1113 primary terminal HB.P. which can be used to transmit or receive signals associated with primary communications using the primary antennas 101. 102.

101121 The first SP3T switch 105 and the first and second SPST switches 111, 112 of th.e antenna switch module 103 can be set to receive desired FIB and LB diversity signals. For example, when a transceiver receives both 1-lB and LB diversity signals, the first and second SPST switches 11, 112 can be closed, and the first SP3T switch 105 can be used to electrically connect the first diversity input terminal INIE) to an input of the diplcxcr LB'lIB diplexer 107 Aduitionally when the transeeivcr re nes the HE diversity signal but not the LB diversity signal. the first and second SPST switches iii, 112 can he opened, and the first SP3T switch 1 05 can be set to electrically connect the first diversity input terminal IINI_D to the HR diversity terminal HB D. Furthermore, when the transceiver receives the LB diversity signal but not the HR diversity signal, the first and second SPST switches iii, 112 can be opened, and the first SP3T switch 105 can be set to elcetrcaily connect the first diversity input terminal INID to the LB diversity terminal LOD.

[0113j The second SP3T switch 106 and the third and friuith SPST switches 113, 114 of the antenna switch module 103 can be set to control primary signal cornmunicalons over the combined MB/RB primary antenna 102.

101141 Additional details of the Rb yteni 100 an he simuar to those described earlier.

10115] Figure 6 is a schematic block diagram clan RF system 120 according to another embodiment. The RF system 120 includes the LB diversity antenna 31, the combined MB/HB diversity antenna 32, and a diversity module 130.

[0116] The diversity module 130 includes a single pole seven throw (SP7T) switch 121, a single pole nine throw (SP9T band selection switch 122, a single pole five tbro (SPU) wihF 173, a smile pole two thiow (SP2F) switch 124, a first impedance 135 a second impedance 126, the LB/HB dipiexer 37, the first and secon.d SPST switches 82, 83.

a. LB processing circuit 13 1,, a MB processing circuit 1.32, and a RB processing circuit 133.

The LB processing circuit 131 includes first to eighth LB filters 61 a-6 lh and first to eighth LB LNAs 64a-64h. The MB processing circuit 132 includes first to sixth MB filters 62a-62f and first to sixth. MB LNAs 65a-65f The HR processing circuit 133 includes first to fowth RB filters 63a-63d arid first to fourth FIB [NM 66a-&d Inc dnersity module 130 fhrthei includes a first bidirectional tenninal BIl, a second bidirectional tenninal B12, a first diversity antenna terminal ANTI 1), and a second diversity antenna terminal ANT2D.

10117] in the itustrated configuration, the diversity module 130 is operable in a swap mode in which the LB diversity antenna 3 1 is used fin transmitting prunary LB signals and in which the combined MB/FIB diversity antenna 32 is used fin transmitting primary MB'HB signals 1rnp1cnentng the dn9ersuy module 130 with a. .v,ap rnoaL can enhance Vie pcrfonnane of a mobile device In arlowing the mobile dcvice to selectivcls LSC dnetsny antenna(s) for primary transmissions when, for instance, the primary antenna(s) are blocked or obstructed. For example, a mobile device may he set by a user on a surface in a manner that blocks or obstructs the primary antenna(s) such that performance can be enhanced by transmitting signals via the diversity antenna(s), [0118J The SPIT switch 121 can be used to connect the LB diversity antenna 31 to the first impedance 125, or to the first bidirectional terminal BIt via a LB bypass path 135 through the SP5T switch 123, or to various LB fillers 61a-61h associated with different low frequency bands. By setting the SP7T switch 121 and the SPST switch 12$ to select the LB hypa's path t35 a pnrnar' I B transmit signal can,;e provided to the I B dnersiti antenna 3 I during the swap mode. When operated in this manner, the first bidirectional terminal BLI recues a pnniary transmit %ignal However, when the diversity module 130 does not operate in the swap mode, the diversity module 130 can use the first bidirectional terminal 311 as a shared LB/RB diversity terminal. Accordingly, in the illustrated configuration, the first bidiretional lcnmral RH can operate with bidneetional signal flow 101191 The SPQT band seltion swvch 172 cm be used to electncally corned the combined MB/RB diversity antenna 32 to the second impedance 126, or to the second bidirectional terminal ff12 via a MB/HB bypass path 136 through the SF21' switch 124.

When the SP9T band selection switch 122 and the SP2T switch 124 are used to select the MB/RB bypass path 136 during the swap mode, a primary MB/HB transmit siiai can be provided to the combined MB/RB diversity antenna 32.

[01201 Additionally, the SP9T band selection switch 122 can be used to electrically conncct the combmed MB/RB diversity antenna 32 to vsrious MB filters 62a-62f associated with different mid frequency hands and/or to various RB filters 63a-63d associated with different high frequency bands. In the illustrated configuration, the SP9T band selection switch 122 can provide a receive signal from the combined JvW/HB diversity antenna 32 to both MB and RB filter% at the same time if desired Conuigunng the SP9I band selection switch 122 to include a state in which the receive signal from the combined MB/I-lB diversity antenna 32 is provided to both MB filters and HB filters can aid in providing carrier aggregation in a manner similar to that described earlier. In the illustrated configuration, the second bidirectional terminal B12 can operate with bidirectional signal flow.

101211 In the illustrated configuration, the first LB filter Ma filters Rand 29, the second LB filter 61b filters Band 27, the third LB filter 61c filters Band 28 Block A, the fourth LB filter 61d filters Band 28 Block B, the fifth LB filter 61e filters Band 5, Band 6, Band 18, Band 19, and Band 26, the sixth LB filter 61f ifiters Band 12, Band 13, and Band 17, the seventh LB filter 61g filters Band 20, and the eighth LB filter 6th filters Band 8.

Additionally, the first MB filter 62a filters Band 3, the second MB filter 62h filters Band 1, the third MB filter 62c filters Band I and Band 4, the fourth MB filter 62d filters Band 25 and Band 2, the fifth MB filter 62e filters Band 39, and the sixth MB filter 62f filters Band 34. Furthermore, the first RB filter 63a filters Band 7, thc sccord RB filter 63b filters Band 30, the third HB filter 63e filters Band 40, and the fourth RB filter 63d filters Band 41.

101221 Alhough one exa'nple of possible LB, MB, and RB filters and hands has been provided, other configurations are possibk.

101231 The diversity module 130 illustrates that in certain configurations, a dersity noduic an be co'ifigured o operate using multiple h'sh freouency bands multiple mid frequency hands, andIor multiple Low freqLency bands Additionally, the LBiHB diplexer 37 can be used to combine a LB signal and a HB signal to generate a combined LB and RB signal that can be routed elsewhere in the RE system.

[0124J Figure 7 is a schematic block diagram of an RF system 200 according to another embodiment. The RF system 200 includes a diversity module 210, the LB diversity antenna 31, and the combined MB/HR diversity antenna 32 101251 The diversity module 210 includes the band selection switch 33, the LB processing ircuit 4, the MB proLessing circuit 35, the FIB processmg circuit 36, the first and second diversity antenna terminals, ANT1 D, ANT2_D, and the first and second demity outpu4 tci annals OL T I D, OUT?_D, which can be as described earlur Additionally, the diversity module 2t0 includes the SP2T switch 207.

RU26 The diversity module 210 of Figure 7 is similar to the diversity module 30 of Figure 2, except that the diversity module 210 of Figure 7 omits the LB/FIB dipiexer 37 of Figure 2 in Favor of including the SP2T switch 207. As shown in Figure 7, the SP2T switch 207 can be used to proude the LB signal gtutrakd by the I B rocessirig circuit 34 or the RB signal generated by the HR processing circuit 36 to the first diversity output tenninal OUTID which operates as a shared LB/HR output terminal \ccordingy, rathet than sending a combined LB/FIB signal on the first diversity output terminal OUTI) as shown for the diversity module 30 of Figure 2, the illustrated configuration selects between LB and HR signals at a given time. For example, the SP2T switch 207 illustrates one example of a multi-throw switch that pro% ides the LB signal to the first divursity outpal terminai OUl II) in a first slate and that provides the MB signal to the first diversity output terminal OUT1D terminal in a second state.

101271 The iflustrated configuration can be used, fbi-example, in configurations iii which a mobile device's transceiver need not receive LB and 1-lB signals from the LB diversity antenna 3 1 and MB/HR diversity antenna 32 at the same time.

101281 Additional details of the diversity module 210 of Figure 7 can be similar to those described earlier.

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Examples of Diversity Modules with Low hifermodulation Distortion 101291 Appantus and methoc for dnersitv moduks are pro Ucu heren In certain onfigurations, a divcrsity n'odule tncbide1⁄4 a firsc antenna side multi throw switch, a second antenna-side multi-throw switch, a first transmitter-side multi-throw switch, a. second transmjtter-sidc multi-throw switch, a low band (LB) processing circuit, a mid hand (MB) procemg cucLit, arid a higri hand HBI pioesng circuit Ihe LB piocesig urcuit is electrically coupled in a first signal path between the first antenna-side multi-throw switch and he fist traiscenei-de rnuii-hrow switch, the MB pioc'cssing i,ucuit s ekrcally copied in a second signal path between thc second u-ans-ceiver-side multi-throw switch and the second transceiver-side multi-throw switch. and the HB processing circuit is electric-ally coupled in a third signal atli between the second antenna-side multi-throw switch and the first transmitter-side multi-throw switch.

101301 the diversity module can further include a first transmit bypass path, such as a LB transmit bypass path, that is selectable using the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch. Additionally. the diversity module can thither include a second transmit bypass path, such as a MB and/or FIB transmit bypass path, that is selectable using the second transceiver-side multi--throw switch and the second -antenna-side multi-throw switch. The first and/or second transmit bypass paths can be used dunrg a swap mode in which drs-crity antenna(s) eleemcally eoupkd to hc artenna-side multi-throw switches are used fi,r primary signal transmissions.

[01311 Electrically coupling the HB processing circuit between the second antenna-side multi-throw switch and the first transmitter-side multi-throw switch can enhance the performance of the diversity module. For example, as will be described in detail farther below, electrically coupling the HB processing circuit between the second antenna-side multi-throw switch and the first transmitter-side multi-throw-switch can reduce or eliminate inter-modulation at the output of the HB processing circuit associated with a MB and'o-fIB p-imary transmit signal AcLorduigly, the dwersity moduks herein can exhibit enhanced performance, including smaller intermodulation distortion and/or greater isolation.

0132I Figure 8 is a schematic block diagram of a diversity module.500 according to another embodiment The drversity module 500 inc udLs r first in enna-side inuhi-throw switch 501, a second antenna-side multi-throw switch 5O2, a first transceiver-side multi--throw switch 503, a second transceiver-side multi-throw switch 504, a LB processing circuit 14, a MB process ng circuit 35, and a I-lB processing urcwt 36 Ihe diversity module 500 thither includes a first diversity antenna terminal ANTI D, a second diversity antenna terminal ANT2 D, a first bidirectional terminal Bil, and a second bidirectional terminal 812.

101331 The diversity module 500 can be electrically coupled to one or more diversity antennas via the first and second diversity antenna terminals ANTI D, ANT2D, which operate on an antenna-side of the diversity module 500. Additionally, the diversity module 500 can he electrically coupled to a transceiver (for example, by way of an antenna switch module) via the first and second bidirectional terminals Bli, B12, which operate on a transceiver-side of the diversity module 500.

101341 As shown in Figure 8, the first antenna-side multi-throw switch 501 is electrically coupled to thc first diversity antenna tennirial ANTI D, the second antenna-side multi-throw switch 502 is electrically coupled to the second diversity antenna terminal ANT2 D, the first transceiver-side multi-throw switch 503 is electrically coupled to the first bidirectional terminal 811, and the second transceiver-side multi-throw switch 504 is electrically coupled to the second bidirectional terminal 812.

101351 The L.B processing circuit 34 is electrically coupled in a first signal path between the first antenna-side multi-throw switch 501 and the first transceiver-side multi-throw switch 503 When the states of the first antcnna--%ide multi-thiow switch 501 and the first transceiver-side multi-throw switch 503 are setS Lo select the LB processing circuit 34 the LB processing circuit 34 can process a divcrsity signal received on the first diversity antenna tern-unal ANTID to generate a LB signal on the first htdirectional terimnal RH 101361 The MB processing circuit 3 is elcctncafly coupled m a second signal path between the second antenna-side multi--throw switch 502 and the second transceiver-side multi-throw switch 504. When the states of the second antenna-side multi-throw switch 502 and the second timsceivet side multi-throw switch 504 are set to sciect the MB processing circuit 35, the MB processing circuit 35 can process a diversity signal received on the second diversity antenna terminal ANT2 H to generate a MB signal on the second bidirect onal terminal B12 101371 The KB processing circuit 36 is electricafly coupled in a third signal path between the second antenna-side multi-throw switch 502 and the first transceiver-side multi-tnww switch 503 When,ht states of the second aiitcmna-sde niuIti-thio sw tch 502 and the first transceiver-side muiti-thmw switch 503 are set to select the FIB processing circuit 36. the 1-13 processing circuit 36 can process a diversity signal received on the second diversity antenna terminal ANT2_D to generate a HB sigrEal on the first bidirectional temiina! 811, jUl38] Tie LLstrated diversity nounle ¶00 rnrther includes a first transmit bypass path 511 between the first antenna-side multi-throw switch 501 and the first transceiver-side multi-throw switch 503. When the states of the first antenna-side multi-throw switch 5Q1 and the fr-st trrsceicr-sidc multi-throw svatc't 503 arc sS to select the first transmit bypass path 511, a transmit sigral received on he fi'st hidirect onal terminal 811 can he provided to the first diversity antenna terminal ANTI 0. The iLlustrated diversity module 500 further includes a second transmit bypass path 512 between the second atenna-suje, mLji-throw switch 502 and the seconci transce1%er-clde multi throw switci 504 Wher the sties of the second antenna-side multi-throw switch 502 and the second transceiver-side multi-throw switch 504 are set to select the second transmit hypass path 512, a transmit signal received on the second bidirectional tenninal B12 can he provided to the second diversity antenna terminal ANT2D.

[0139 The first and second transmit bypass paths 511, 512 can be used during a swap mode of the diversity module 500 to allow a transceiver to transmit primary signals using di ers t antenna(s) For example in one embodiment, the first transmit bypass path 511 can be used by the u-ansceiver to transmit a LB primary transmit signal during the swap mode, and the second transmit hypass path 512 can be used by the transceiver to transmit a MB andior RB primary transmit signal durng the swap mode. Implementing a diversity module with a swap mode can enhance the performance of' a mobile device by allowing a transeeivei to tiansnut vii dneisit> antenna(s) when commumeation via pnmary anterma() is compromised, such as when the primary antenna(s) are blocked or obstructed.

101401 Although Figure $ illustrates certain signal paths between the multi-throw switches, the multi-throw switches can he adapted to provide selection of additional paths.

F-or cxarnph, with reerercc back to I igure 6 multi-thro v switches can be used for selection of multiple low bands, multiple mid bands, and/or multiple high bands. Furthermore, the dftersity module can be adapted to include additional structures, such as additional circuitry or tenninals.

014iJ In the illustrated configuration, the HR processing circuit 36 is electrically coupled in a signal path between the second antenna-side multi-throw switch 502 and the first ransceiver-sidc multi-throw switch 503 As will be decnbed in detail further belov, configimng thc HB processing circuit 36 in this mannel can enhance pcrfonnance of the diversity todule 500 by inhibiting ugh frequetcy tratmimt leakage from rcaching the ou,ut of the HB ptcessing entail 16 arid genexatmg ircennod&aUon [01421 Additional details of tue diveisaty module 500 can he u ilar to those described earlier.

101431 Figure 9A is a schematic block diagram of one example of an RF sybten' 20 The RF system 220 includes a diversity modulc 230, an antenna switch modulc 240, the 1B diversity antenna 31, the cornbincd MB/JIB dwei sity antenna 32, and a combined MR/JIB primary antenna 102.

[0144J The diversity module 230 includes an antenna-side SP2T switch 211, an antenna--side SP3T switch 212. a transceiver-side SP2T' switch 213, and a transceiver-side SF31' switch 214. The diversity module 230 further includes a LB processing circuit including a LB filter 231 and a LB LNA 234, The diversity module 230 further includes a MB processing circuit including a MB fllter 232 and a MB LNA 235. The diversity module 230 further includes a [113 filter 233 and a JIB LNA 236. The diversity module 230 further includes a first bidirectional terminal BIl. a second bidirectional tenninal 1312, a first diversity antenna terminal ANT ID electrically coupled to the LB diversity antenna 3 1, and a second diversity antenna tenninal ANT2 electrically coupled to the combined MB/MB diveisty antenna 32 [0145J As shown in Figure 9A, the LB processing circuit is electrically coupled in a first signal path between the antenna-side SP2T switch 211 and the transceiver-side SP2I' switch 213. Additionally, the MB processing circuit is electrically coupled in a second signal path between the antenna-s de SF3 F switci 212 and thc tansccner-stde SPT switch 214 Furtheimote the MB proces'nng circuit is electmaly coupled m a third igrai path between the antenna-side SP3T switch 212 and the transceiver-side SP3T switch 214. The illustrated diversity module 230 further includes a LB transmit bypass path 251 between the antenna-side SP2 [ switch 211 and lie transceiver-side SP2'I swiLh 713 and a MB/HE trsnsmit bypass path 252 between the antenna-side SP3T switch 212 and the transceiver-side SP3T switch 2.14.

0146J The antenna switch module 240 includes a first SP2T switch 241 and a second SP2I swith 742 The antenna switch module 240 turther includes a pnrnary antenra term n! electrically couped to the combined MB1EiB primary antenna 102, a rst bidirectional terminal BI I electrically coupled to the first bidirectional terminal 811 of the diversity module 230, and a second bidirectional terminal B12 electncaIl coupled to tLe second bidirectional ternunal B12 of the divcrsity module 230 Ihe antenna switch module 240 further includes a primary MB and HE terminal MB/F[BJ, a diversity MB and HR terminal h4B/HBD, and a LB terminal LB.

[01471 In certain configurations, it can be desirable for a mobile device to transmit signals using one or n'oie dtveisity antennas lot example, certam nobie de%tecs can be configurcd such that the mobile device may include a swap mode in which a primary [B signal a pnmarv MB signal, an&oi a purnary fIB s gr%al i, ii ansmittcd using o ic or more diversity antennas.

[DI4RJ For example, when in the swap mode, the second SP2T switch 242, the tuanseciver side SP3T swch 214 and the antenna-side SP3T switch 212 can be used to select the MB/HB transmit bypass path 252 and to electrically connect the MB/HE_P tenntral to the combined MB'IIB d-iversry antenna 32 Additiona1ly when tn Pie swap mode, thc transceiver-side SP2T switch 213 and the antenna-side SP2T switch 211 can he used to select the LB trancmit bypass path 251 and to eleetneally connect the LB terminal 0 the LB diversity antenna 3 1.

[01491 Although configuring an RF system to include a swap mode can provide flexibility in transmission and reccption of primary and diversity signals, such an implementation may also degrade performance.

101501 For instance, when the RF system 220 is in a normal operating mode (not in the swap mode), the RF system 220 may receive a HB diversity signal on the combined MB/HE dtvemit antenna 32 and transmit a HE pnrrar ugnal on the comb ncd MB/JIB primary antenna 102. In such a configuration, the multi-throw switches of the antenna switch.

module 240 and the diversity module 230 can be set such that primary MB arid HB tenninal \ITI/HBP r, elcctnally coi pled to the conbned MTVIIB pnmary antenna 102, nd such that the divr'aty MB and JIB terminal MB'HB D trnmnal is e ctncaIly coupkd to the output of the HR LNA 236.

101511 When the multi-throw switches of the antenna switch module 240 and. the diversity module 230 are set in this manner, finite switch isolation can lead to transmit leakage 249 through the second SP2T switch 242, which c-an result in a portion of the iransinit signal on the primary MR and HB terminal MB/RB' reaching an output of the HB LNA 236. Since the transmil signal on the primary MB arid RB terminal MB/RB P can be generated b\ a powt.r amplifier (cc, mi example, Figure 1), the tiansmit signal can have a relatively large power, and the power associated with the transmit leakage 249 can be relatively large.

101521 The transmit leakage 249 can lead to intermodulation at the output of the FIB LNA 236 The intermedu aflon can asbouated with thc transmit frequency of the transmit signal on the primary MB and FIB ten. .rii.nal MB/RB P and with a blocker orjarnmer frequency associated with the combined MB/RB diversity antenna 32.

101 3i To enhanced isolation and reduce the intermodulation caused by the transmit leakage 249. a filter can be inchided at the output of the RB LNA 236. However, such a filter may increase size andior co4 of the RE system 101.541 Figure 9B is a schematic block diagram of one embodiment of an RE system 250. The RF system 250 includes a diversity module 260, an antenna switch module 270, the diversity LB diversity antenna 3 1. the combined MB/HR diversity antenna 32, and the combined MB/Fm primary antenna 102.

(0155] The diversity module 260 includes an antenna-side SP2T switch 271, an antenna-side SP3T switch 272, a transceiver-side SP3T switch 273, and a transceiver--side SP2T switch 274. The diversity module 260 fbrther includes the LB processing circuit 54, the MB proc'sing cueuit 55 and the HR proces'ing circuit 56, winch can be w. &cnned earlier. The diversity module 260 further includes a first diversity antenn.a terminal ANT 1 1) electrically coupled to the LB diversity antenna 31, a second diversity antenn.a tcnnmai ANI2 D cleetrcaliy coupled to the combined MB/HB diversity antenna Il, a first bidirectional terminal BR. and a second bidirectional terminal B12.

[0156J As shown in Figure 9B, the LB processing circuit 54 i-s electrically coupled in a First signal path between the antenna-side SP2T switch 271 and the transceiver-side SP3T switch 273. Additionally, the MB processing circuit 55 is electrically coupled in a second signal path between the antenna-side SP3T switch 272 and the transceiver-side SP2T switch 274. Furthermore, the HB processing circuit 56 is electrically coupled in a third signal path between the antennd-sidc SPU switch 22 arid the iansccicr-side SP3T switch 273. The illustrated diversity module 260 further includes a LB transmit bypass path 281. between the antenna-side SP2T switch 271 and the transceiver-side SP3T switch 273, and a MB/HB transmit bypass path 282 between the antenna-side SP3T ,w,tch 272 and the tta'mceivu-side 8P2 I swtch 274 [0157J in the illustrated configuratftm, the antenna-side SP3T switch 272. can be used to provide a diversity signal received on the combined MB/fiB diversity antenna 32 to an input of the MB processing circuit 55 or to an input of tile I-TB processing circuit 56.

When the diversity module 260 is operating in a swap mode, the airenna-side SP3T switch 272 can also be used to provide a MBJHB primary transmit signal to the combined MB/F1.B diversity antenna 32 via the MB/I-ER transmit bypass path 282. The transceiver-side SP2T switch 274 can be used to provide the MB signal generated by the MB processing circuit 55 to the diversity module's second bidirectional terminal B12. Additionally, when the diversity module 260 is operating in the swap mode, the transceiver--side SP2T switch 274 can he used to electrically connect the second bidirectional terminal B12 to the MB/HB transmit bypass path 282.

15! The antenna-side SP2T switch 27! can be used to provide a diversity signal received on the LB diversity antenna 31 to an input of the LB processing circuit 54.

When the diversity module 260 is operating in the swap mode, the antenna-side SP2T switch 271 can also be used to provide a LB primary transmit signal to the LB diversity antenna 31. via the LB transmit bypass path 281. The transceiver-side SP3T switch 273 can he used to provide the fiB signal gercrated by the fiB pxocessmg cucuit 56 to the first bidirectional terminal 811 or to provide the LB signal generated by the LB processing circuit 54 to the first bidirectional terminal BI 1.. Additionally, when the diversity module 260 is operating in the swap moic, the transceivr-side 8P3 F switch 773 can be used to electrically connect the first bidirectional terminal B! I to the LB transmit bypass pat-li 281.

I01S9 The antenna switch module 270 includes a first SP2T switch 261 and a second SP2T switch 262 2 he antenna switch module 270 further mJude a prina y antenna tenrma' electrically coupled to the t.orrb tied MB/MB primary antenna 102 a fist bidirectional terminal Rh electrically coupled to the first bidirectional terminal Eli of the diversity module 250, and a second bithreetionat terminal B12 electrically coupled to the second bidirectional terminal B12 of the diversity module 260. The antenna switch module 270 further includes a primary MB and HE terminal MB/HR P, a diversity LB and HR terminal LB/HR 0, and a diversity MB terminal MB_D.

101601 During a normal operating mode of the RE system 250 (not in the swap mode, the RF system 250 may receive a FIB diversity signal on the combined MB/HR diversity antenna 32 and transmit a MB primary signal on the combined MB/MB primary antenna 102 When the switc1-ies of the antenna stutci module 270 anti the divercit moduLe 260 are set in this manner, finite switch isolation can lead to transmit leakage 259 through the second SP2T switch 262.

1016U Howevei in contrast to the RE system 230 of Figure 9A the RE system 250 of Figure 9B can avoid interniodulation associated with the transmit leakage 259 reaching an output of a MB LNA. For example, the diversity module 260 of Hgure 9B provides the HR signal generated by the 1-LB processing circuit 56 to the second SF31 switch 273 wtiieh in turn is electrically couped to the drvenity LB and KB terminal LB/HBD of the antenna switch module 260. Configuring the RF system in this manner can prevent the transmit leakage 259 from reaching the output of HR LNA 66, Although the transmit leakage 259 can reach the output of the MB LNA 65, intennodulation can he cxaccrbated at high band frequencies idanve to mid hand frequencies Acordmgly the performance impact associated with the transmit leakage 259 reaJimg the output of the MB LNA 65 is significantly less than the performance impact associated with the transmit leakage 259 reaching the output of the HR INA 66.

10162 Additional details of the RF system 250 can be similar to those described earlier.

10i63 Figure 10 is a schematic block diagram of another embodiment of an RF system 300. The RF system 300 includes a diversity module 310, an anemia switch -j module 320, the LB diversity antenna 3!, the combined MB/H13 diversity ante-a 32, the LB pnmary antcnna 1 01, and the combined MB FIB primary anrerma 102 101641 Thc dirs t module 310 of Figure 10 is sumlai to the thvt arty module 360 of Figure 9B, except that the diversity module 260 includes a different implementation of LB, MB, and FIB processing circuits. In particular, the diversity modiie l0 ot Figuie 10 includes the LB procesmg circuit 34, the MB pioccssing cieuit 35 and the HB processing circuit 36. respectively..

L01651 The illustrated airtenna switch module 320 includes a SP2T switch 330, a first SP3T switch 331, a second SP3T switch 332, a third SP3T switch 333. The antenna swttch module 320 further includes a first primary antenna terminal ANT i_P electrically coupled to the LB primary antenna 101, a second pthnary antenna terminal ANT2P electrically coupled to the combined MB/HB primary antenna 102, a first bidirectional terminal 3.11 electrically coupled to the first bidirectional terminal 1311 of the diversity module 310, a second bidirectional terminal B12 electrically coupled to the sccond bidirectional terminal B12 of the diversity module 310, a primary MB terminal HB_P, a primary MB terminal MI3P, a primary LB terminal LBP. a diversity FIB terminal PHD, a shared diversity MB/HB terminal MB/MB D, and a diversity LB terminal LB_Ji 101661 As shown in Figure 10, the first SP3T switch 331 can he used to el&mczlly connect the firsF rndncctiona! terminal Bli to the pnmary LB terminal I B P. to the diversity LB terminal LB_D, or to the diversity HB tenninal HBD, Additionally, the second SP3T switch 332 can be used to electrically connect the combined MB/MB primary antenna 102 to the primary PB terminal MBP, to the primary MB terminal MBP, or to the shared nrsry MB/HB terminal MB/TIBD Furthennore, the thud SP3T s';itch 333 can be used to electrically connect the second bidirectional terminal BI2 to the primary MB terminal MI3P. to the primary MB terminal I-lB P, or to the shared diversity MB/PB terminal MB/lARD. Furthermore, the SP2T switch 330 can be used to electrically connect the LB primary antenna 101 to the primary LB terminal LBP or to the diversity LB tenninal LBD, j8167j Additional details of the RF system 300 of Figure 10 can he similar to those described earlier. -.34-

101681 Although the diversity module 260 of Figure 911 and the diversity module 310 of Figure 10 Lu. rot ilhist'ated as nehiding the LB/I-LB dip exer 37 sho*n in Figwe 2-b the disersity modute 260 of Figure 9B and'oi the dneisity module 310 of Figure 10 can be adapted to include a LB/lB diptexer. For instance, in one embodiment, the second SP3T switch 273 of Figure 10 is omitted in favor of including a SP2T switch, and a LBl1B thplexer r minded for recombining an output of the LB processing irt ufi 34 and n output of the HR processing circuit 36 to generate a combined LB/JIB signal that is provided to the 8P2 I' swi cli Furthermore n certam config rations an antenna-side multithrow switch can he implemented as a hand selection switch that can select two or more bands at a time.

[0169] Although the RIP modules described in Figures 2-10 are illustrated as including certain terminas and components, the teachings herein are applicable to other configurations. For example, the modules herein can include additional terminals and/or comporents h ch have been omitted font the Figures for danty For nstanee in eertam embodiments, circuitry and terminals of the module used in a receive direction are illustrated, while the module can he adapted to includc additional circuitry associated with a transmit direction.

Applications [9170] Some of the embodiments described above have provided examples in connection with mobile devices. However, the principles and advantages of the embodiments can be used ibr any other systems or apparatus that have needs for RF modules.

101711 Such RF modules cat be iniplemented m various chctroni devices Examples of the electronic devices can include, but are not limited to, consumer electronic products, parts of the consumer electronic products, electronic test equipment, etc. Examples of the electronic devices can also include, but are not limited to. memory chips, memory modules cucu-;s ot optical netvorks ci other conlirunkatton netwoiks, and dhk di is er circuits. The consumer electronic products can include, hut are not limited to, a mobile phone, a telephone, a telex sion, computer monitor, a computer a hana-held computci a personal digttal assistant (PD A) a microwave, a refrigerator at' automobile, a stereo system a cassette recorder or player, a DVI) player, a CD player, a VCR, an MP3 player, a radio, a -35.-camcorder, a camera, a digital camera, a portable memory chip, a washer, a dryer, a washer/dryer, a copier, a facsimile machine, a scanner, a multi-functional peripheral device, a wrist watch, a clock, etc. Further, the electronic devices can include unfinished products.

Conclusion

[0172J 1 n1es thc context deafly nquire' otherwis, ihro ighout the dt..'criptton and th.e claims, the words "comprise," "comprising," and the like are to he construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but riot limited to." The word "coupled", as generally used herein, refers to two or more elements that may he either directly connected, or connected by way of on.e or more intennediate elements, Likewise, the word "connected", as generally used herein, refers to two or more elements that may be either directly comnected, or connected by way of one or more intermediate e[ements, Additionally. the words "herein." "above," "below," arid words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. Where the context permits, words in the abwe Deafled Decnption umg the singular or plural number may also include the plural or singular number respectively. The word "or" in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of tl'c itcms in die list, and an combination of the items in thc list [0173] Moreover, conditional language used herein, such as. among others, can." could,' might," "can," "e.g." "for example," "such as" and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodimems include, while other embodiments do not include, certain features, elements and/or states. Thus, such conditional language is not generally intended to imply that features, elements and/or sttes are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or states are included or are to be performed in any particular embodiment.

j0174j The above detailed description of embodiments of the invention is not intended to be exhaustive or to limit the invention to the precise form disclosed above.

While specific embodiments of and examples for, the invention are described above for illugirative purposes, various equivalent modifications are possible within the scope of the mvention, as those skilled in the relevant art wil' recogmze loi exampe, whilr. prcx esses or blodcs ar presentLd m a given order, altezuatne embodiments may perform ioutines ravmg steps, or employ systems having blocks, in a different order, and sonic processes or blocks may be deleted, moved, added, subdivided, combined, and/or modified. Each of these processes or blocks may be implemented in a variety of different ways. Also, while processes or blocks are at times shown as being performed in series, these processes or biocka way mste id DC pcrforrncd n parallel or may be performed at diuercnt I mes [01751 The teachings of the invention provided herein can be applied to other systems, not necessarily the system described above. The elements and acts of the various embodiments described above can be combined to provide further embodiments.

0176 While certain embodimerts of the rinenUons have been described, thrse embodiments have been presented by wa.y of example only, and are not intended to limit the scope of the disclosure Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes n the form of the 1ncthods ann sstems descnbcd herein may he made without departing from the spirit of the disclosure. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of

the disclosure

Claims

I A mobile device comprising: at least one diversity antenna; a diversity module electrically coupled to the at least one diversity antemla, the diversity module configured to generate a high band (FIB) signal, a mid band (MB) signal, and a low band ([JB) signal based on processing one or more diversity signals received from the at least one diversity antenna, the I-lB signal having a frequency content that is greater than a frequency conten.t of the MB signal and the MB s gnai having a frequency contcnt that i' grcatLr thai a frequency cont:nt of t i LB signal, the diversity module further configured to generate a combined LB/FIB signal based on combining the LB signal and the HB signal; and an antenna switch module configured to receive the MB signal and the combirnd I BulB signal from the thvusity module
2. The mobile device of claim 1 wherein the frequency content of the LB signal is less than 1 6Hz, the frequency content of the MB signal i between 1 (rI-k and 3 GH7, and. the frequency conten.t of the FIB signal is greater titan 23 6Hz.
3, The mobile device of claim 1 or 2 further comprising a transceiver and one or moie primary antcnnac the transceivel electrically coupled o the one or more primary antennas via the antenna switch module.
4. The mobile device of claim 1, 2 or 3 wherein the diversity module includes a duplexer LonIigwtd to genetate the combined LBI-IB signal baMed on thc LB signal and the 1-lB signal.
5. The mobile device of claim 1, 2 or 3 wherein the diversity module includes a LB proeessing circuit configured to generate the LB signal, a MB processing circuit confIgured to generate the MB signal, and a FIB processing circuit configured to generate the MB signal.
6. The mobile device of claim 5 wherein the LB processing circuit includes a first filter and a first LNA arranged rn a easede, th& MB proc essmg circuit i icUdes a second fi]ter and a second LNA arranged in a cascade, and the HB processing circuit includes a third filter and a third LNA arranged in a cascade.
7. The mobile device of claim S or 6 further comprising a diversity antenna terrmna coafigLred to receive a corn3med MB/IIB dis-ersity s gnai aria a band selection switch including an input electrically coupled to the diversity antenna terminal, a first output electrically coupled to an input of the MB processing circuit, and a second output electrically coupled to an input of the HB processing circuit.
8, A method of front end signa! processing in a mobile device, the method comprising: receiving one or more diversity signals from at least one diversity antenna; generating aft wi band (HB; signal, a mid hauc (MB) signal and a low band (LB signal based on processing the one or more diversity signals using a diversity module, the RB sigiial having a frequency content that is greater than a frequency content of the MB signal and the MB signal having a frequency content that is greater than a frequency content of the LB signal; generating a combined LB/MB siai based on combining the LB signal and the HB signal using the diversity module; providing the MB signal to an antenna switch module over a first signal route; and providing the combined LB/MB signal to the antenna switch module over a second signal route.
9. The method of claim 8 wherein the frequency content of the LB signal is less itn I GUi the frequency content of the MB signal is hctwcen Gui and 2 3 GE-It and the frequency content of the HB agnal is greater than 2 3 GFIz
10. The method of claim S or 9 fwther comprising receiving one or more primary signals from at least one primary antenna, and providing the one or more primary signals to the antenna switch module.
11. The method of claim 8, 9 or 10 wherein generating the combined LB/H B signal iciudcs ombtning th I B Mgnal and the [LB signal usirg a diplexci
12. A diversity module for a mobile device, the diversity module comprising: a low band (1 B proesng ciruit configured to generate a I B signal based on processing one or more diversity signals; a mid band (MB) processing circuit configured to generate a MB signal based on processing the one or more diversity signals, the MB signal having a frequency content that is greater than a frequency content of the LB signal; a high hand (JIB) processing circuit configured to generate a HE signal based on processing the one or more diversity signals, the RB signal having a frequency content that is greater than a frequency content of the MB signal; a MB terminal configured to receive the MB signal; a shared LB/HB terminal; and a muiti-4hrnw switch electrically coupkd to the shared LB/HR terminal, the multi-throw switch configured to provide the LB signal to the shared LB/FIB terminal in a. first state and to provide the MB signal to the shared LB/I-lB terminal in a second state.
13. The diversity module of claim 12 wherein the frequency content of the LB signal is less than 1 0Hz, the frequency conten.t of the MB signal is between I GHz and 2.3 0Hz, and the frequency content of the HE signal is greater than 2.3 0Hz.
14. The diversity module of claim 12 or 13 fnrthcr comprising a dipiexer configured to combine fix. LB signal and the HB signal to geneiate a combined LB/HB signal the mu1ti-throw swith configured Lo provide the combined LBIHB signal to the shared LB/I-lB terminal in a third state.
15, The diversity module of claim 14 further comprising a first switch electrically coupled between an output of the HB processing circuit and a first input of the diplexer, and a second switch electrically coupled between an output of the LB processing circuit and a second input of the diplexer.
16. The diversity module of claim 15 wherein the first and second switches are configured to close when the muitithrow switch operates in the third state and to open when the multi-throw switch operates in the first or second states.
17, The diversity module of any of claims 12 to 16 wherein the LB processing circuit includes a first filter and a first LNA arranged in a cascade, the MB processing circuit includes a second filter and a second LNA arranged in a cascade, and the HB processing circuit includes a third filter and a third LNA arranged in a cascade.
18. The diversity module of any of claims 12 to 17 further comprising a first diversity antenna terminal configured to receive a LB diversity signal, the first diversity antenna terminal electrically coupled to an input of the LB processing circuit.
19. The diversity module of clam 18 further comprising a second diversity antenna terminal configured to receive a combined MB/RB diversity signal, artd a band selection switch including an input electrically coupled to the second diversity antenna tenninal, a first output electrically coupled to an input of the MB processing circuit, arid a second output electrically coupled to an input of the MB processing circuit
20. The diversity module of claim 12 wherein the LB processing circuit includes a phiraLty of lo' band filters hasing different frequuicy ranges, the MB proesing circuit includes a plurality of mid band filters having different frequency ranges, and the FIB processmg ir:ui1 includes a plurality ol high band filters ha'?Ing dittezent Irequency ranges
21. A diversity module lhr a mobile device. the diversity module comprising: a that anlinna side mu'ti-throw swttch a second antenna--side multi-throw switch; a first transceiver-side multi-throw switch; a second transceiver--side multi-throw switch; a lo ha vi T B) proccsstng circuit configured to geet ate a LB signal the LB processing circuit electrically coupled in a first signal path between the first antenna-side multi-throw switch and the first transceiver-side multi-throw switch; a rrud band (MB) processm& ci..cuit configuied o gcneiate a MB igna1 having a frequency content that v gi eater tha a frcqi. ency content of the I B signal, the MB processing circuit electrically coupled in a second signal path between the second antenna-side multi-throw switbh and the second transceiver-side multi-throw switch; and a high hand (FIB) processing circuit configured to generate a i-lB signal having a frequency content that is greater than the frequency content of the MB signal, the HB processing circuit electrically coupled in a third signal path between the second antenna-side multi-throw switch and the first transceiver-side multi--throw switch.22 rhe diversry module of claim 21 wherein the trequency content of thc I H signal is less than I (3Hz, the frequency content of the MB signal is between I GHz and 23 GHz, and the frequency content of the HB signal is greater than 23 (3Hz.23. The diversity module of claim 21 or 22 wherein the diversity module further includes a first transmit bypass path between the first transceiver-side multi-throw switch and the first antenna--side multi-throw switch, and a second transmit bypass path between the second transceiver-side mthti-tko swueh and the second antenna-side mulu-luow sitch 24. The diversity module of claim 23 wherein the diversity module is operaile in a plurality of modes including a nomtal operating mode and a swap mode, the first tiansceive-side nulu throw swikh and t1e first artenna-side mtlti thro sutch wnhgui cd to select the first transmit bypass path in the swap mode, and the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch configured to select the second transmit bypass path in the swap mode-.25. The diversity module of any of claims 21 to 2$ further comprising a first diversity antenna terminal electrically coupled to the first antenna-side multi--throw switch, a second diveisity antenna termmal eLctrtcaliy coupled to the seeind antenna-side ntdti-tkow switch, a first bidirectional terminal electrically coupled to the first transceiver-side multi-throw switch, and a second bidirectional terminal electrically coupled to the second transceiver-side multi-throw switch.26. The diversity module of claim 25 wherein the diversity module is operable in a plurality of modes including a normal operating mode and a swap mode, the first transccjver-side multi-throw switch configured to provide one of the LB siial or the 1-113 sig-nal to the tiNt biduectional tetnunal ai tie normal operating iiode and tb se-cord transceiver-side multi-throw switch configured to provide MB signal to the second bidirectional terminal in the normal operating mode.27. The diversity module of claim 26 wherein the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch are configured to electrically couple the first bidirectional teniiinal to the first diversity antenna terminal via the first transmit bypass path in the swap mode, and the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch are configured to electrically couple the second bidirectional teiminal to the second diversity antenna terminal a the second trarsmit bypass path in the swap mode 28 11w dieisny modtile ot claim 21 udiercin the LB proccssmg circuit includes a fl-st filter and a first LNA arranged in a cascade, the MB processrng cucuit ncades a sceo"d filter and a second LNA arranged in a cascade, and the FIB processing circuit includes a third filter and a third LNA arranged in a cascade.-29. A mobile device comprising: a transceiver; an antenna switch module; at least one diversity antenna; and a diversity module including a transceiver-side and an antenna-side, the diversity module electrically coupled to the transceiver via the antenna switch module on the transceiver-side and electrically coupled to thc at least one diversity antenna on the antenna-side, the diversity module including a first antenna-side multi-throw switch, a second antenna-side multi-throw switch, a first transceiver-side multi-throw switch, a seorid tranceiver-,ide multi-throw switch a lox; band (I B) procesing circuit, a mid band (MB) processing circuit, and a high band (FIB) processing circuit, the LB piocessin.g circuit electrically coupled in a first signal path between the first antenna-side multi-throw switch and the first transceiver-side multi-throw switch, the MB proces'mg utcuit electucally coupled in a scond signal path between thc second antenna-side multi-throw switch and the second transceiver-side multi-throw switch, and the HE processing circuit electrically coupled in a third signal path between the second antenna-side multi-throw switch and the first transceiver-side multi-throw switch.30. The mobile device of claim 29 wherein the LB processing circuit is configured to generate a LB signal based on processing one or more diversity signals received from die at least one diversity antenna, the MB processing circuit is configured to gene-ate a MB signal having a frequency content that is greater than a frequency content ot the LB signal based on processing the one or more diversity signals, and the HE processing circuit is configured to generate a 1-lB signal having a frequency content that is &eater than the frequency content of the MB siial based on processing the one or more divershy signals.31. The mobile device of claim 30 wherein the frequency content of the LB signal is less than 1 GH-z. the frequency content of the MB signal is between I (1Hz arid 2.3 GHz, and the frequency content of the HE signal is greater than 23 (1Hz.32. The mobile device of claim 2,3O or 31 wherein the diversity module further includes a first transmit bpass patti between the first trarisceivei-side multi-thiow switch ard the first antenna-side multi-throw switci, and a second transmit bypass path between the scond transLever-side inulti-tluow switdi ant' the second a itenna-side ru1ti-thio; switch 33 1 he mobile acvicc of chum 32 w'mrem the diversity mn&!e is operable in a plurality of modes including a nonnal operating mode and a swap mode, the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch configured to sciect the first transmit bypass path in the swap mode, and the second transceiver-side multi-throw switch and the second antenna-side mum-throw switch configuied to s'eJ the second transmit bypass path in the swap mode.34. The mobile device of claim 33 wherein the first transceiver-side multi-throw switch is configured to select an output of the 1-TB processing circuit or an output of the IB prncesing circuit in the normal opLating mode, and the second ttansceier Mdc multi-throw switch is configured to select an output of the MB processing circuit in the normal operating mode.35. The mobile device of claim 33 wherein the LB processing circuit includes a first filter and a first LNA ananged in a cascade, the MB processing circuit includes a second filter and a second LNA arranged in a cascade, and the 1-TB processing circuit includes a third filter and a third LNA arranged in a cascade.36. The mobile device of any of claims 29 to 35 further comprising one or more primary antennas, the transceiver electrically couplen to the one or more primary antennas via the antenna switch module.37. A method of signal processing in a diversity module, the method comprising receiving one or more diversity signals using at least one diversity antenna.; generating a low band (L signs] based on processing the one or more dinrsuy signals usng a TB processing circu t, the LB prcicessmg circui. e1etnaiy coupled in a first signal path between a first antenna-side multi-throw switch and a first transcuver-sidc muhi-throw wit cli, generating a nud band (1MB) signal based on processing the one or more &tveis!ty ignaIs using a MB processing irLit the MB pwcessrng encmt clectricaily coupled in a second signal path between a second antenna-side multi-throw switch and a second transceiver-side multi-throw switch, the MB signal having a frequency content that is greater than a frequency content of the LB signal; and generating a high hand (RB) signal based on processing the one or more dierst.w signal usng a FIB proLessing Lncult, the HB piocessing cucui elcericahy coupled iii a third signal path between the second antenna-side multi-throw switch and th.e first transceiver-side multi-throw switch, the RB signal having a frequency content that is greater than the frequency content of the NIB signal.38. The method of claim 37 further comprising operadng the diversity module in one of a plurality of operating modes including a normal operating mode and a bypass mode, selecting the LB signal or the H.B signal using the first transceiver-side multi-throw switch whtn tht divLrsnv module is in the normal operating mode, and selecting the MB s'gnal using the second transceiver-side multi-throw switch when the diversity module is in the normal operating mode.3Q The method of claim 38 further uimp'ming eleeting he first transmit bypass path using the first transceiver-side multi-throw switch and the first antenna-side multi-throw switch when the diversity module is in the swap mode, and selecting the second transmit bypass path using the second transceiver-side multi-throw switch and the second antenna-side multi-throw switch when the diversity module is in the swap mode.40. The method of claim 37, 38 or 39 wherein the frequency content of the LB signal is less man 1 GHz the frequency content of the MB.ignal lb between 1 0hz and 2 3 (3Hz, and the frequency content of the FIB signal is greater than 2.3 GI-lz.41. A mobile device substantially as herein described with reference to any of' the accompanying drawings.42. A method of front end sial processing in a mobile device substantially as herein described with reference to any of the accompanying drawings.43. A diversity module for a mobile device substantially as herein described with reference In any of the accompanying drawings.