Patent ID: 6265935
Filing Date: 2001-07-24
Classification: H03F,H03G,H04B

Abstract:
A radio transmission amplifier unit which amplifies a signal fed to an input terminal and provides the amplified signal to an output terminal, comprising:a plurality of amplifiers provided between said input terminal and said output terminal and each having a power supply terminal;power supply means for supplying power to said plurality of amplifiers;power-supply switching means for selectively connecting said power supply means to the power supply terminals of said plurality of amplifiers to supply thereto power;route switching means for switching the cascade connection of said plurality of amplifiers to connect the output of a selected one of said amplifiers to said output terminal; andcontrol signal generating means for generating switch control signals which specify the connection by said power-supply switching means and the state of connection by said route switching means in accordance with a transmitting power controlling degree corresponding to the transmitting power level and for applying said switch control signals to said power-supply switching means and said route switching means, respectively.