Title :
An HBT MMIC linear power amplifier for 1.9 GHz personal communications
Author :
Yoshimasu, T. ; Tanba, N. ; Hara, S.
Author_Institution :
Electron. Components Group, Sharp Corp., Nara, Japan
Abstract :
This paper describes a special circuit design concept for high efficiency linear amplification of /spl pi4 DQPSK modulation signals. A fabricated HBT MMIC linear power amplifier exhibited an output power of 21.2 dBm and a power added efficiency of 36% along with an adjacent channel interference of -55 dBc in +/- 600 kHz offset frequency bands.<>
Keywords :
MMIC; bipolar integrated circuits; heterojunction bipolar transistors; microwave amplifiers; personal communication networks; phase shift keying; power amplifiers; power integrated circuits; ultra-high-frequency amplifiers; /spl pi4 DQPSK modulation signals; 1.9 GHz; 36 percent; HBT MMIC amplifier; UHF personal communications; circuit design; high efficiency; linear power amplifier; Circuit synthesis; Frequency; Heterojunction bipolar transistors; High power amplifiers; Interchannel interference; Linearity; MMICs; Power amplifiers; Power generation; Voltage;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1994. Digest of Papers., IEEE 1994
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1418-2
DOI :
10.1109/MCS.1994.332142
