Transmit receive radio frequency switch
AssigneeDSP Group Ltd.
InventorsSergey Anderson, Nadav Snir
Life of this patent
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Abstract
A TX/RX RF switch that may include a reception path; and a transmission path that has an antenna port, a transmission input port, and transmission transistors. The transmission transistors have source-bulk connections. The reception path has an antenna port, a reception output port, and reception transistors. The reception path includes a first reception transistor that is closest to the antenna port, out of the reception transistors, and has a source-bulk connection, and at least one other reception transistor that has a bulk-to-ground connection. The reception transistors and the transmission transistors are CMOS transistors.
Claims19
A transmit receive radio frequency switch, comprising:
- a reception path;
- and
- a transmission path;
- wherein the transmission path comprises an antenna port, a transmission input port, and a plurality of transmission transistors,
- wherein each transmission transistor of the plurality of the transmission transistors has a source-bulk connection,
- wherein the reception path comprises the antenna port, a reception output port, and a plurality of reception transistors,
- wherein the plurality of reception transistors comprises:
- (a) a first reception transistor having a source-bulk connection, and (b) at least two other reception transistors, wherein all reception transistors other than the first reception transistor have a bulk-to-ground connection when the first reception transistor has the source-bulk connection, wherein the first reception transistor is closer to the antenna port than the at least two other reception transistors, and
- wherein the plurality of reception transistors and the plurality of transmission transistors are complementary metal-oxide-semiconductor transistors, and wherein a configuration of the plurality of reception transistors is different than a configuration of the plurality of transmission transistors.
A method for operating a transmit receive radio frequency switch, the method comprising:
- operating the transmit receive radio frequency switch at a reception mode by activating a plurality of reception transistors of a reception path of the transmit receive radio frequency switch, the reception path also comprises an antenna port and a reception output port;
- the plurality of reception transistors comprise (a) a first reception transistor having a source-bulk connection, and (b) at least two other reception transistors, wherein all reception transistors other than the first reception transistor have a bulk-to-ground connection when the first reception transistor has the source-bulk connection, wherein the first reception transistor is closer to the antenna port than the at least two other reception transistors;
- and
- operating the transmit receive radio frequency switch at a transmission mode by activating a plurality of transmission transistors of a transmission path of the transmit receive radio frequency switch, the transmission path also comprises the antenna port and a transmission input port;
- wherein each transmission transistor of the plurality of transmission transistors has a source-bulk connection, wherein a configuration of the plurality of reception transistors is different than a configuration of the plurality of transmission transistors.
Dependencies are inferred from the claim text.