Title :
Trade off analysis between power-added efficiency and linearity on HBT power amplifier
Author :
Pinatel, C. ; Vuye, S. ; Riet, M. ; Dubon-Chevalier, C ; Rojat, B ; Lermoyer, A
Abstract :
Different HBT operating classes have been compared in terms of output power and power-added efficiency using a simulated multiharmonic load-pull type optimization and also in term of linearty measured on hybrid modules. A fully automatic test bench has been developed in order to perform linearity measurements among which Bit Error Rate (BER) and speetrum side lobe level for a QPSK signal. The best results were obtained on the class AB hybrid amplifier with output power of 1 W, 50% PAE at 1.8 GHz.
Keywords :
Automatic testing; Bit error rate; Brain modeling; Heterojunction bipolar transistors; Linearity; Performance evaluation; Power amplifiers; Power generation; Power measurement; Quadrature phase shift keying;
Conference_Titel :
Microwave Conference, 1995. 25th European
Conference_Location :
Bologna, Italy
DOI :
10.1109/EUMA.1995.336909
