TRANSMISSION APPARATUS AND TRANSMISSION METHOD

摘要

A transmission apparatus includes a digital amplifier having a plurality of class-D amplifiers connected in parallel to each other, each of the class-D amplifiers including a logic circuit that processes input signals from two input terminals and outputs the input signals to one of two output terminals, according to a selection signal, and including capacitors connected in series to the two output terminals, respectively, a first selection circuit that outputs either an in-phase component or a quadrature component of a transmission signal to the digital amplifier depending on the selection signal, and a second selection circuit that outputs either an in-phase component carrier signal or a quadrature component carrier signal to the digital amplifier depending on the selection signal.

主权项

1. A transmission apparatus comprising:
a digital amplifier having
a plurality of class-D amplifiers connected in parallel to each other, each of the class-D amplifiers including
a logic circuit that processes input signals from two input terminals and outputs the processed signals to one of two output terminals, according to a selection signal, andcapacitors connected in series to the two output terminals, respectively; a first selection circuit that outputs either an in-phase component or a quadrature component of a transmission signal to the digital amplifier depending on the selection signal; and a second selection circuit that outputs either an in-phase component carrier signal or a quadrature component carrier signal to the digital amplifier depending on the selection signal.