Circuit for controlling power of radio apparatuses

Abstract

Abstract The circuit uses a control loop which provides a regulation offset after comparison with a reference. The control loop also takes temperature and operating voltage into account. The circuit includes an amplifier (1), a directional coupler (2), a rectifier (3), a regulator (4) and a controller (5). The regulation for all power stages is interrupted for the highest stage and replaced with a power controller by switching the regulator to a 2:1 amplifier. The power is then set to a value which can vary - within certain tolerances - w.r.t. operating voltage and temperature. The regulation is only interrupted as long as the operating voltage and temperature parameters do not cause the tolerances to be exceeded. Two electronic switches are provided to switch over the circuit and operate in conjunction with two resistors.

Inventors

• 👤 Gerhard Dipl.-Ing. Zeller

Bibliographic Details