US Patent No. 10,925,125

PLANAR INDUCTORS FOR RF HEATING SYSTEMS


Patent No. 10,925,125
Issue Date February 16, 2021
Title Planar Inductors For Rf Heating Systems
Inventorship Qi Hua, Wuxi (CN)
Changyang Wang, Shanghai (CN)
Assignee NXP USA, Inc., Austin, TX (US)

Claim of US Patent No. 10,925,125

1. A system comprising:a radio frequency (RF) signal source configured to produce an RF signal;
an impedance matching network that includes:
a first planar inductor with a first terminal and a second terminal, wherein the first terminal of the first planar inductor is coupled to the RF signal source,
a second planar inductor with a first terminal and a second terminal, wherein the first terminal of the second planar inductor is coupled to the second terminal of the first planar inductor, and the second terminal of the second planar inductor is coupled to a ground reference terminal, and
a first variable inductor network coupled in series with the second planar inductor;
a first electrode that is electrically coupled to the second terminal of the first planar inductor of the impedance matching network; and
a second electrode.