Abstract: A radio frequency transmitter including two digital to analog converter circuits. The two radio frequency digital to analog converter circuits are configured to operate independently or operating in unison. Operating independently includes each radio frequency digital to analog converter circuit of the two radio frequency digital to analog converter circuits receiving separate baseband signals and separate local oscillation inputs. Operating in unison includes both of the two radio frequency digital to analog converter circuits receiving a single baseband signal and a single local oscillation input. The two radio frequency digital to analog converter circuits are configured to change between operating independently and operating in unison.

Abstract: Various circuitry may benefit from appropriate matching. For example, certain low noise broadband amplifiers may benefit from resistive matching.