Qualcomm Incorporated

Kwan-Woo Kim

Rainer Gaethke

Thinh Nguyen

Arvind Keerti

Sudhakar Kalakota

Hyun Min Park

An apparatus is disclosed that implements a switchable electromagnetic ring. In an example aspect, the apparatus includes a wireless transceiver with an electromagnetic circuit and at least one switchable electromagnetic ring. The electromagnetic circuit is configured to generate an electromagnetic field. The at least one switchable electromagnetic ring includes a switch and a conductive element. The switch has a first terminal and a second terminal. The conductive element is connected between the first terminal and the second terminal. At least a portion of the conductive element is positioned within the electromagnetic field.

Switchable electromagnetic ring

A multipath circuit is described that has multiple signal paths and various common components used for normal operation. Each of the multiple signal paths also has multiple circuit blocks defining the functionality of the signal path. A shared access path is provided through the third winding of a three-way transformer for each signal path. Multiple switches are provided in the multipath circuit that couple to the third winding in each of the multiple signal paths. The switches are also coupled to the various common components. Selected ones of these switches may be closed to provide a shared access path between a common component and one of the signal paths or between a common components and one of the circuit blocks in one of the signal paths.

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Palo Alto, CA, United States of America

Kwan-Woo Kim