US 11,757,184 B2
Switched coupled inductance phase shift mechanism
Narek Rostomyan, San Diego, CA (US)
Assigned to Metawave Corporation, Carlsbad, CA (US)
Filed by Metawave Corporation, Carlsbad, CA (US)
Filed on Dec. 28, 2021, as Appl. No. 17/564,174.
Application 17/564,174 is a continuation of application No. 16/747,407, filed on Jan. 20, 2020, granted, now 11,211,704.
Claims priority of provisional application 62/854,290, filed on May 29, 2019.
Prior Publication US 2022/0123468 A1, Apr. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 3/36 (2006.01); H01F 21/02 (2006.01)
CPC H01Q 3/36 (2013.01) [H01F 21/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radar device, comprising:
an antenna array;
a transceiver coupled to the antenna array;
an antenna controller adapted to steer radiation beams from the antenna array; and
a phase shift device, comprising:
a variable inductor element configured to toggle between a first inductance state and a second inductance state in response to a first control bit value; and
a plurality of variable capacitor elements coupled to the variable inductor element and configured to toggle between a first capacitance state and a second capacitance state in response to a second control bit value different from the first control bit value,
wherein the variable inductor element and the plurality of variable capacitor elements collectively produce a first phase shift using the first inductance state and the first capacitance state and collectively produce a second phase shift using the second inductance state and the second capacitance state, wherein a target phase shift is produced from a difference between the first phase shift and the second phase shift.