US 12,424,996 B2
Phase shifters with switched transmission line loads
Mostafa Azizi, Stittsville (CA); and Hassan Sarbishaei, Ottawa (CA)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on May 21, 2024, as Appl. No. 18/669,833.
Application 18/669,833 is a continuation of application No. 17/455,098, filed on Nov. 16, 2021, granted, now 12,028,038.
Claims priority of provisional application 63/199,397, filed on Dec. 23, 2020.
Prior Publication US 2024/0305262 A1, Sep. 12, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H03H 7/20 (2006.01); H01P 1/18 (2006.01)
CPC H03H 7/20 (2013.01) [H01P 1/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A phase shifter comprising:
a coupler including an input terminal, a thru terminal, a first coupled line connected between the input terminal and the thru terminal, an isolation terminal, a coupling terminal, and a second coupled line connected between the isolation terminal and the coupling terminal;
an input port connected to the input terminal of the coupler and configured to receive a radio frequency input signal; and
a first controllable reflective load including a transmission line connected to the thru terminal of the coupler, a first pair of shunt transistors connected between a first point of the transmission line and a ground voltage, a second pair of shunt transistors connected between a second point of the transmission line and the ground voltage, and a third pair of shunt transistors connected between a third point of the transmission line and the ground voltage, the second pair of shunt transistors directly between the first pair of shunt transistors and the third pair of shunt transistors with no other shunt transistors therebetween, a distance between the first point and the second point being greater than a distance between the second point and the third point.