US 11,689,189 B2
Digital phase shifter
Steven Edward Heuttner, Tucson, AZ (US)
Assigned to Cubic Corporation, San Diego, CA (US)
Filed by Cubic Corporation, San Diego, CA (US)
Filed on Apr. 7, 2021, as Appl. No. 17/224,961.
Claims priority of provisional application 63/006,254, filed on Apr. 7, 2020.
Prior Publication US 2021/0313968 A1, Oct. 7, 2021
Int. Cl. H03H 17/08 (2006.01); H01P 3/08 (2006.01); H03H 11/16 (2006.01)
CPC H03H 17/08 (2013.01) [H01P 3/08 (2013.01); H03H 11/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A digital phase shifter, comprising:
an input port configured to receive signals;
an output port configured to transmit phase shifted signals; and
a plurality of transmission lines disposed between the input port and the output port, wherein:
the transmission lines disposed in a ring with a first pair of the transmission lines disposed in series in a first path and a second pair of the transmission lines disposed in series in a second path, and
a selected one of the transmission lines of the first and second pairs comprising a quarter-wave hybrid coupled line.