Title :
A Millimeter Wave Monolithic VCO with an Integrated Heterojunction FET as a Varactor
Author :
Ohata, Keiichi ; Funabashi, Masahiro ; Inoue, Takashi ; Onda, Kazuhiko ; Hosoya, Kenichi ; Maruhashi, Kenichi ; Kuzuhara, Masaaki
Author_Institution :
Advanced Millimeter Wave Technologies Co. Ltd., c/o NEC Corp. 2-9-1 Seiran, Otsu, Shiga 520, Japan
Abstract :
A millimeter wave monolithic voltage controlled oscillator (VCO) with a 0.15¿m gate AlGaAs/InGaAs heterojunction FET as an active element and with a Schottky gate of a drain DC-biased HJFET as a variable reactance element has been developed. The drain DC-biased HJFET varactor has an improved Cg-Vg characteristics and is effective to realize a linear oscillation frequency control of 26MHz/V with 5.5dBm output power around 29GHz.
Keywords :
FETs; Frequency control; Frequency modulation; Frequency shift keying; Gallium arsenide; Heterojunctions; Indium gallium arsenide; Millimeter wave technology; Varactors; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 1994. 24th European
Conference_Location :
Cannes, France
DOI :
10.1109/EUMA.1994.337458
