US 12,334,960 B2
Configurable radio frequency (RF) multiplexing switch for RF front end in 4G/5G applications
Yuan Luo, Los Gatos, CA (US); Yalin Jin, San Jose, CA (US); Shang Wang, Milpitas, CA (US); and Jeesu Kim, San Ramon, CA (US)
Assigned to Avago Technologies International Sales Pte. Limited, Palo Alto, CA (US)
Filed by Avago Technologies International Sales Pte. Limited, Singapore (SG)
Filed on Jul. 25, 2022, as Appl. No. 17/872,912.
Prior Publication US 2024/0030944 A1, Jan. 25, 2024
Int. Cl. H04B 1/00 (2006.01); H04B 1/04 (2006.01); H04B 1/30 (2006.01)
CPC H04B 1/0057 (2013.01) [H04B 1/006 (2013.01); H04B 1/04 (2013.01); H04B 1/30 (2013.01); H04B 2001/0408 (2013.01); H04B 2001/307 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A circuit comprising:
a set of M radio frequency (RF) input ports, wherein M is an integer;
a set of N RF output ports, wherein Nis an integer, the M RF input ports operatively coupled to the N RF output ports by a set of RF signal paths, each RF output port operatively coupled to one or more RF filters;
a set of series switches, each series switch configured to create a conducting signal path based on an RF signal path operatively coupling an RF input port and an RF output port;
a set of M+X shunt switches, wherein X is an integer less than N, the set of shunt switches being connected to at least one RF ground for each RF input port and each RF output port not associated with the conducting signal path;
wherein the set of series switches includes a first series switch adjacent to a first RF output port and configured to create, by closing, a conducting signal path based on an RF signal path operatively coupling a first RF input port and the first RF output port.