US 12,328,106 B2
Power amplifier modulator
Qingyi Huang, Shenzhen (CN); Yong Zhang, Beijing (CN); Mark Cope, Bath (GB); and Bernhard Strzalkowski, Munich (DE)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on May 6, 2022, as Appl. No. 17/738,842.
Prior Publication US 2023/0361731 A1, Nov. 9, 2023
Int. Cl. H03F 1/30 (2006.01); H03F 1/02 (2006.01); H03F 3/24 (2006.01); H03F 3/72 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/0227 (2013.01); H03F 3/72 (2013.01); H03F 2203/7206 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A circuit for biasing a power amplifier (PA), the circuit comprising:
a first isolated power supply comprising a first DC output and a first common output;
a second isolated power supply comprising a second DC output and a second common output, the second DC output being electrically coupled to the first common output; and
a switch network, the switch network being configurable to a first state in which the first DC output is provided at a circuit output, the switch network also being configurable to a second state in which the second DC output is provided at the circuit output.