Patent ID: 9148089
Filing Date: 2015-09-29
Classification: H03F,H04L

Abstract:
1. A transmitting apparatus comprising: a duty converter that makes a duty ratio, a time ratio of an on-period to one period of a carrier signal, 25% or less by adjusting a delay time; and a plurality of amplifiers that are connected in parallel and that amplify the carrier signal with the duty ratio, each of the plurality of amplifiers including a P-channel element, an N-channel element, and a capacitor connected to the P-channel element and the N-channel element, and being made in operation or in non-operation depending on a value of an input control signal, wherein when an amplifier among the plurality of amplifiers is made in non-operation, either one of the P-channel element and the N-channel element in the amplifier is turned off and the other one is turned on and or twice in a period of the carrier signal, and the plurality of amplifiers include a plurality of first amplifiers to which an in-phase component of the carrier signal with the duty ratio is input, and a plurality of second amplifiers to which a quadrature-phase component of the carrier signal with the duty ratio is input.