Title :
Switchless Amplifier Switching Scheme for Efficient Transmission Power Control of MESFET High Power Amplifier
Author :
Okazaki, Hiroshi ; Araki, Katsuhiko
Author_Institution :
NTT Network Innovation Laboratories, 1-1, Hikarinooka, Yokosuka, Kanagawa 239-0847 JAPAN. e-mail: okazaki@ieee.org
Abstract :
A novel scheme that provides efficient transmission power control (TPC) for user portable terminals of Ku-band satellite communication systems is presented. The scheme features the use of unique switching and impedance matching techniques for the MESFET high power amplifier (HPA). A detailed performance estimation is carried out and confirmed by the measurement. Experimental results show that the HPA employing the novel scheme achieved 5 dB of TPC efficiently.
Keywords :
Communication switching; High power amplifiers; Impedance; MESFETs; Power control; Power generation; Power transmission lines; Radiofrequency amplifiers; Switches; Synthetic aperture sonar;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.339067
