SWITCHED CAPACITOR TRANSMITTER CIRCUITS AND METHODS

摘要

The present disclosure includes switched capacitor transmitter circuits and methods. In one embodiment, a digital data signal is thermometer encoded and a negative thermo-encoded signal is bit order reversed to control capacitors in a switched capacitor transmitter circuit. In another embodiment, the present disclosure includes a plurality of switched capacitor transmitter circuits coupled to inputs of an inductive network. The inductive network combines voltages from the switched capacitor transmitter circuits to produce a combined voltage on an output.

主权项

1. A transmitter comprising:
a switched capacitor transmitter circuit comprising a plurality of capacitors, wherein the plurality of capacitors are switchably coupled between a power supply terminal and a reference voltage terminal; and a thermometer encoder circuit to receive a cartesian modulated signal and produce a positive thermo-encoded signal and a negative thermo-encoded signal, wherein bit lines of the positive thermo-encoded signal are coupled to control particular capacitors of the plurality of capacitors, and wherein bit lines of the negative thermo-encoded signal are coupled to control particular capacitors of the plurality of capacitors in a reversed bit order relative to the bit lines of the positive encoded signal.