US 11,700,028 B2
Transmit receive radio frequency switch
Sergey Anderson, Netanya (IL); and Nadav Snir, Tel Aviv (IL)
Assigned to DSP Group Ltd., Herzliya (IL)
Filed by DSP Group Ltd., Herzliya (IL)
Filed on Jan. 4, 2021, as Appl. No. 17/140,301.
Claims priority of provisional application 62/981,562, filed on Feb. 26, 2020.
Prior Publication US 2021/0266032 A1, Aug. 26, 2021
Int. Cl. H03K 17/693 (2006.01); H04B 1/44 (2006.01)
CPC H04B 1/44 (2013.01) [H03K 17/693 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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.