US 2014/0112213 A1 · Switched Duplexer Front End

Abstract

The disclosed invention relates to a transceiver system having a bypass signal path that enables low power consumption. The transceiver system has a plurality of signal paths respectively having a filtering element with a stop band and with a pass band. An antenna switching module (ASM) has a plurality of RF ports and a plurality of switching elements. Respective RF ports are connected to a separate one of the plurality of switching elements that selectively connect the RF port to an antenna port of the ASM. A control unit generates control signals that operate the plurality of switching elements to selectively connect the plurality of signal paths to the antenna port. A filtering response at the antenna port is equal to a combination of the filtering responses of filtering elements within the connected signal paths.

Claims20

Dependent claims

A transceiver system, comprising:

a plurality of signal paths respectively comprising a filtering element;
an antenna switching module (ASM) having a plurality of RF ports and a plurality of switching elements, wherein respective RF ports are connected to a separate switching element that is configured to selectively connect the RF port to an antenna port of the ASM;
and
a control unit configured to generate a plurality of control signals that operate the plurality of switching elements to selectively connect the plurality of signal paths to the antenna port, wherein a filtering response at the antenna port is equal to a combination of filtering responses of filtering elements within the connected signal paths.

1 more element

A transceiver system, comprising:

an antenna switch module (ASM) comprising a plurality of switching elements configured to respectively connect a plurality of RF ports to an antenna port;
a transmission chain configured to provide a first signal having a first frequency to a first RF port of the plurality of RF ports;
a first filter located within the transmission chain and configured to have a first pass band at a first frequency range comprising the first frequency and a first stop band at a second frequency range;
a reception chain configured to receive a second signal having a second frequency from a second RF port of the plurality of RF ports;
a second filter located within the reception chain and configured to have a second pass band at the second frequency range comprising the second frequency and a second stop band at the first frequency range;
and
a control unit configured to generate one or more control signals that operate the plurality of switching elements to connect the transmission chain and the reception chain to the antenna port to combine filtering responses of filters within the connected transmission chain or reception chain to generate a collective filtering response.

4 more elements

Dependencies are inferred from the claim text.

Switched Duplexer Front End

Life of this patent

Switched Duplexer Front End

Life of this patent

Abstract

Claims20