US 11,716,059 B2
High gain resonant amplifier for resistive output impedance
Luke Christopher Raymond, Redwood City, CA (US); Johan Oscar Lennart Andreasson, Redwood City, CA (US); and Wei Liang, Palo Alto, CA (US)
Assigned to Airity Technologies, Inc., Redwood City, CA (US)
Filed by Airity Technologies, Inc., Redwood City, CA (US)
Filed on May 17, 2021, as Appl. No. 17/322,447.
Application 17/322,447 is a continuation of application No. 16/024,703, filed on Jun. 29, 2018, granted, now 11,038,477.
Claims priority of provisional application 62/527,348, filed on Jun. 30, 2017.
Prior Publication US 2022/0006431 A1, Jan. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H03F 3/217 (2006.01); H03F 1/56 (2006.01); H03F 3/193 (2006.01); H03F 1/02 (2006.01); H03F 3/195 (2006.01); H03F 3/21 (2006.01); H03F 3/213 (2006.01); H02M 7/538 (2007.01); H01J 37/32 (2006.01)
CPC H03F 1/565 (2013.01) [H03F 1/0205 (2013.01); H03F 3/193 (2013.01); H03F 3/195 (2013.01); H03F 3/211 (2013.01); H03F 3/213 (2013.01); H03F 3/2173 (2013.01); H03F 3/2176 (2013.01); H03F 3/2178 (2013.01); H01J 37/321 (2013.01); H01J 37/32183 (2013.01); H02M 7/538 (2013.01); H03F 2200/297 (2013.01); H03F 2200/301 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a resonant amplifier circuit, wherein the resonant amplifier circuit comprises:
a first inductor having a first inductive input and a first inductive output;
a second inductor having a second inductive input and a second inductive output;
a first switch coupled, via a first terminal of the first switch, to the first inductive output; and
a second switch coupled, via a second terminal of the second switch, to the second inductive output, wherein the first switch and the second switch are driven out of phase based at least in part on a clock signal,
wherein the first inductor is configured to be resonant with a first capacitance coupled across the first terminal of the first switch and a second terminal of the first switch,
wherein the second inductor is configured to be resonant with a second capacitance coupled across a first terminal of the second switch and the second terminal of the second switch,
wherein the first inductive output of the first inductor is coupled to the first terminal of the first switch and a second terminal of the first capacitance, and
wherein the second inductive output of the second inductor is coupled to the second terminal of the second switch and a second terminal of the second capacitance;
an impedance matching circuit configured to enable an impedance match to a load coupled to an output of the apparatus; and
a direct current filtering circuit configured to at least enable blocking at least a portion of direct current from reaching the load coupled to the output of the apparatus.