US 12,250,010 B2
Systems and methods for diplexer circuits with leakage cancellation
David Richard Pehlke, Westlake Village, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Mar. 31, 2022, as Appl. No. 17/657,585.
Claims priority of provisional application 63/171,811, filed on Apr. 7, 2021.
Claims priority of provisional application 63/171,803, filed on Apr. 7, 2021.
Claims priority of provisional application 63/171,809, filed on Apr. 7, 2021.
Prior Publication US 2022/0329268 A1, Oct. 13, 2022
Int. Cl. H04B 1/525 (2015.01); H03H 7/46 (2006.01); H04B 1/00 (2006.01); H04B 1/04 (2006.01); H04B 1/10 (2006.01); H04B 1/12 (2006.01); H04B 1/16 (2006.01); H04B 1/18 (2006.01); H04B 1/3805 (2015.01); H04B 1/44 (2006.01)
CPC H04B 1/0057 (2013.01) [H03H 7/463 (2013.01); H04B 1/0483 (2013.01); H04B 1/1081 (2013.01); H04B 1/12 (2013.01); H04B 1/1607 (2013.01); H04B 1/18 (2013.01); H04B 1/3805 (2013.01); H04B 1/44 (2013.01); H04B 1/525 (2013.01); H04B 2001/0408 (2013.01); H04B 2001/3811 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A diplexer circuit comprising:
first and second radio frequency ports and a first antenna port;
first and second parallel communication paths extending between the first radio frequency port and the first antenna port, and third and fourth parallel communication paths extending between the second radio frequency port and the first antenna port; and
a first hybrid splitter configured to apply a first phase shift to a first radio frequency transmit signal between the first radio frequency port and a first diplexer on the first communication path, a second hybrid splitter configured to apply a second phase shift to a second radio frequency transmit signal between the first antenna port and a second diplexer on the second communication path, and a third hybrid splitter configured to apply a third phase shift to the first radio frequency transmit signal between the first diplexer and the second radio frequency port on the third communication path, each of the first and second hybrid splitters having a bandwidth that is wider than a threshold value at which second harmonics of the first and second radio frequency transmit signals are cancelled in both directions.