Multiband simultaneous transmission and reception front end architecture

A user equipment (UE) adapted for multiband simultaneous transmission and reception of voice and data, the UE comprising:

• a first antenna;
• a second antenna;
• and
• a UE front end (FE) comprising:
• a first power amplifier (PA) for transmitting signals of a first radio access technology type;
• a second PA for transmitting signals of at least a second radio access technology type;
• a first multi-filter device having a transmit (TX) band-pass filter adapted to pass a first TX signal band associated with the first radio access technology type and a receive (RX) band-pass filter adapted to pass a second RX signal band associated with the second radio access technology type, wherein the first multi-filter device has an input coupled to the first PA and an output coupled to the first antenna;
• at least a second multi-filter device having a TX band-pass filter adapted to pass a second TX signal band associated with the second radio access technology type and an RX band-pass filter adapted to pass a first RX signal band associated with the first radio access technology type, wherein the at least a second multi-filter device has an input coupled to the second PA and an output that is selectively coupled to the second antenna via a first radio frequency (RF) switch;
• and
• a high band/low band diplexer having a first port coupled to the first multi-filter device, a second port coupled to the first antenna, and a third port coupled to a second RF switch for selectively coupling the high band/low band diplexer to a first diversity RX band-pass filter and a second diversity RX band-pass filter.

A user equipment (UE) adapted for multiband simultaneous transmission and reception of voice and data, the UE comprising:

• a first antenna;
• a second antenna;
• and
• a UE front end (FE) comprising:
• a first power amplifier (PA) for transmitting signals of a first radio access technology type;
• a second PA for transmitting signals of at least a second radio access technology type;
• a first multi-filter device having a transmit (TX) band-pass filter adapted to pass a first TX signal band associated with the first radio access technology type and a receive (RX) band-pass filter adapted to pass a second RX signal band associated with the second radio access technology type, wherein the first multi-filter device has an input coupled to the first PA and an output that is selectively coupled to the first antenna via a first radio frequency (RF) switch;
• at least a second multi-filter device having a TX band-pass filter adapted to pass a second TX signal band associated with the second radio access technology type and an RX band-pass filter adapted to pass a first RX signal band associated with the first radio access technology type, wherein the at least a second multi-filter device has an input coupled to the second PA and an output that is selectively coupled to the second antenna via a second RF switch;
• and
• a high band/low band diplexer having a first port coupled to the first multi-filter device, a second port coupled to the first antenna, and a third port coupled to a third RF switch for selectively coupling the high band/low band diplexer to a first diversity RX band-pass filter and a second diversity RX band-pass filter.