Qualcomm Incorporated

Wei Cheng

Changhan Hobie Yun

Chuan Wang

Daniel Daeik Kim

Kevin Hsi Huai Wang

Paragkumar Ajaybhai Thadesar

Nosun Park

Hannu Laurila

Ville Herman Brunou

Ville Lehtisalo

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

A circuit includes a passive low gain low noise amplifier (LNA) configured to receive a communication signal, an active low gain LNA configured to receive the communication signal, a shared coupling circuit, outputs of the passive low gain LNA and the active low gain LNA coupled to the shared coupling circuit, an output circuit, an output of the shared coupling circuit coupled to the output circuit, and a high gain LNA configured to receive the communication signal, the high gain LNA coupled to the output circuit along a path that bypasses the shared coupling circuit.

Multi-mode low noise amplifier

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San Diego, CA, United States of America

Wei Cheng