Qualcomm Incorporated

Ville Lehtisalo

Changhan Hobie Yun

Daniel Daeik Kim

Paragkumar Ajaybhai Thadesar

Nosun Park

Hannu Laurila

Wei Cheng

Ville Herman Brunou

An exemplary tunable circuit includes an inductor coupled to a node and a first capacitor coupled to the node. The tunable circuit also includes a variable capacitor coupled to the node, such that a total capacitance of the tunable circuit depends on a fixed capacitance of the first capacitor and a variable capacitance of the variable capacitor. In an example, the inductor and the first capacitor are both included in a passive device and the variable capacitor is in a semiconductor device. The variable capacitor allows the total capacitance to be modified for the purpose of, for example, calibrating the capacitance to account for manufacturing variations, and/or adjusting to a frequency range of operation used by wireless devices in a region of the world. The first capacitor may be a higher quality capacitor providing a larger portion of the total capacitance than the variable capacitor.

Tunable circuit including integrated filter circuit coupled to variable capacitance, and related integrated circuit (IC) packages and fabrication methods

Growing community of inventors

Uusimaa, Finland

Ville Lehtisalo