Block sharing using three-way transformers in wireless circuits

摘要

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.

主权项

1. A wireless radio transmitter configured for wireless communication, comprising:
a plurality of signal paths, each of the plurality of signal paths including a plurality of circuit blocks; one or more common components coupled to each of the plurality of signal paths; a three-way transformer in each of the plurality of signal paths, wherein a first winding of the three-way transformer is coupled to a first group of circuit blocks of the plurality of circuit blocks, a second winding of the three-way transformer is coupled to a second group of circuit blocks of the plurality of circuit blocks, and a third winding of the three-way transformer is coupled to the one or more common components; one or more switches coupled to the third winding of the three-way transformer of each of the plurality of signal paths, wherein, in response to activation of the one or more switches, a shared access path is created between the one or more common components and at least one of the first and second groups of circuit blocks.