Diversity modules for processing radio frequency signals

Abstract

Diversity modules for processing radio frequency (RF) signals are provided herein. In certain implementations a diversity module includes a first terminal, a second terminal, a low band processing circuit that generates a low band signal based on one or more diversity signals, a mid band processing circuit that generates a mid band signal based on the one or more diversity signals and that provides the mid band signal to the second terminal, a high band processing circuit that generates a high band signal based on the one or more diversity signals, and a multi-throw switch that provides the low band signal to the first terminal in a first state and that provides the high band signal to the first terminal in a second state.

1 . (canceled) 
     
     
         2 . A diversity module for a mobile device, the diversity module comprising:
 a diplexer configured to generate a combined signal based on combining a first radio frequency signal received at a first input and a second radio frequency signal received at a second input;   a multi-throw switch configured to output a low band signal to a first diversity output terminal in a first state, to output a high band signal to the first diversity output terminal in a second state, and to output the combined signal to the first diversity output terminal in a third state, the high band signal having a frequency content that is greater than a frequency content of the low band signal;   a first single-throw switch configured to selectively provide the high band signal to the first input of the diplexer; and   a second single-throw switch configured to selectively provide the low band signal to the second input of the diplexer.   
     
     
         3 . The diversity module of  claim 2  wherein the first single-throw switch is configured to close when the multi-throw switch operates in the third state, to open when the multi-throw switch operates in the first state, and to open when the multi-throw switch operates in the second state. 
     
     
         4 . The diversity module of  claim 2  wherein the second single-throw switch is configured to close when the multi-throw switch operates in the third state, to open when the multi-throw switch operates in the first state, and to open when the multi-throw switch operates in the second state. 
     
     
         5 . The diversity module of  claim 2  further comprising a first low noise amplifier configured to provide the high band signal to the multi-throw switch and the first single-throw switch, and a second low noise amplifier configured to provide the low band signal to the multi-throw switch and the second single-throw switch. 
     
     
         6 . The diversity module of  claim 2  wherein the frequency content of the low band signal is less than 1 gigahertz, and the frequency content of the high band signal is greater than 2.3 gigahertz. 
     
     
         7 . The diversity module of  claim 2  further comprising a low band processing circuit configured to generate the low band signal based on processing a first diversity signal received from a first antenna terminal, and a high band processing circuit configured to generate the high band signal based on processing a second diversity signal received from a second antenna terminal. 
     
     
         8 . The diversity module of  claim 7  further comprising a mid band processing circuit configured to generate a mid band signal based on processing the second diversity signal. 
     
     
         9 . The diversity module of  claim 8  further comprising a band selection switch configured to provide the second diversity signal to the mid band processing circuit but not to the high band processing circuit in a first state, to provide the second diversity signal to the high band processing circuit but not to the mid band processing circuit in a second state, and to provide the second diversity signal to both the mid band processing circuit and to the high band processing circuit in a third state. 
     
     
         10 . The diversity module of  claim 8  wherein the frequency content of the low band signal is less than 1 gigahertz, the frequency content of the mid band signal is between 1 gigahertz and 2.3 gigahertz, and the frequency content of the high band signal is greater than 2.3 gigahertz. 
     
     
         11 . The diversity module of  claim 8  wherein the mid band processing circuit is configured to provide the mid band signal to a second diversity output terminal. 
     
     
         12 . A mobile device comprising:
 an antenna switch module; and   a diversity module coupled to the antenna switch module by way of a first diversity output terminal, the diversity module including a diplexer configured to generate a combined signal based on combining a first radio frequency signal received at a first input and a second radio frequency signal received at a second input, a multi-throw switch configured to output a low band signal to the first diversity output terminal in a first state, to output a high band signal to the first diversity output terminal in a second state, and to output the combined signal to the first diversity output terminal in a third state, the high band signal having a frequency content that is greater than a frequency content of the low band signal, the diversity module further including a first single-throw switch configured to selectively provide the high band signal to the first input of the diplexer, and a second single-throw switch configured to selectively provide the low band signal to the second input of the diplexer.   
     
     
         13 . The mobile device of  claim 12  wherein the first single-throw switch is configured to close when the multi-throw switch operates in the third state, to open when the multi-throw switch operates in the first state, and to open when the multi-throw switch operates in the second state. 
     
     
         14 . The mobile device of  claim 12  wherein the second single-throw switch is configured to close when the multi-throw switch operates in the third state, to open when the multi-throw switch operates in the first state, and to open when the multi-throw switch operates in the second state. 
     
     
         15 . The mobile device of  claim 12  wherein the diversity module further includes a first low noise amplifier configured to provide the high band signal to the multi-throw switch and the first single-throw switch, and a second low noise amplifier configured to provide the low band signal to the multi-throw switch and the second single-throw switch. 
     
     
         16 . The mobile device of  claim 12  wherein the diversity module further includes a low band processing circuit configured to generate the low band signal based on processing a first diversity signal received from a first antenna terminal, and a high band processing circuit configured to generate the high band signal based on processing a second diversity signal received from a second antenna terminal. 
     
     
         17 . The mobile device of  claim 16  further comprising a mid band processing circuit configured to generate a mid band signal based on processing the second diversity signal. 
     
     
         18 . The mobile device of  claim 17  wherein the diversity module further includes a band selection switch configured to provide the second diversity signal to the mid band processing circuit but not to the high band processing circuit in a first state, to provide the second diversity signal to the high band processing circuit but not to the mid band processing circuit in a second state, and to provide the second diversity signal to both the mid band processing circuit and to the high band processing circuit in a third state. 
     
     
         19 . The mobile device of  claim 17  wherein the mid band processing circuit is configured to provide the mid band signal to a second diversity output terminal, the diversity module further coupled to the antenna switch module by way of the second diversity output terminal. 
     
     
         20 . A method of diversity signal processing in a mobile device, the method comprising:
 generating a combined signal based on combining a first radio frequency signal received at a first input of a diplexer and a second radio frequency signal received at a second input of the diplexer;   outputting a diversity output signal to a first diversity output terminal using a multi-throw switch, including outputting a low band signal to the first diversity output terminal in a first state, outputting a high band signal to the first diversity output terminal in a second state, and outputting the combined signal to the first diversity output terminal in a third state, the high band signal having a frequency content that is greater than a frequency content of the low band signal;   selectively providing the high band signal to the first input of the diplexer using a first single-throw switch; and   selectively providing the low band signal to the second input of the diplexer using a second single-throw switch.   
     
     
         21 . The method of  claim 20  further comprising closing the first single-throw switch and the second single-throw switch when the multi-throw switch operates in the third state, opening the first single-throw switch and the second single-throw switch when the multi-throw switch operates in the first state, and opening the first single-throw switch and the second single-throw switch when the multi-throw switch operates in the second state.