US 12,381,305 B2
Switchable directional coupler with intermediate termination state
Joseph Slaton, San Diego, CA (US); and Peter Bacon, Derry, NH (US)
Assigned to PSEMI CORPORATION, San Diego, CA (US)
Filed by pSemi Corporation, San Diego, CA (US)
Filed on Mar. 7, 2023, as Appl. No. 18/179,974.
Application 18/179,974 is a continuation in part of application No. 18/160,602, filed on Jan. 27, 2023, abandoned.
Prior Publication US 2024/0258676 A1, Aug. 1, 2024
Int. Cl. H01P 5/18 (2006.01); H03H 7/38 (2006.01)
CPC H01P 5/18 (2013.01) [H03H 7/38 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A quarter-wavelength switchable directional coupler having a forward mode of operation and a reverse mode of operation, the quarter-wavelength switchable directional coupler including:
(a) a primary transmission line having a first port and a second port;
(b) a secondary transmission line having a third port and a fourth port;
(c) a first independent termination circuit selectively couplable to the third port; and
(d) a second independent termination circuit selectively couplable to the fourth port;
wherein during transitions of the quarter-wavelength switchable directional coupler between the forward mode of operation and the reverse mode of operation, the third port and the fourth port are concurrently terminated by at least one of the first independent termination circuit or the second independent termination circuit.