Title :
A 15-GHz monolithic low-phase-noise VCO using AlGaAs/GaAs HBT technology
Author :
Yamauchi, Yoshiki ; Kamitsuna, Hideki ; Nakatsugawa, Masashi ; Ito, Hiroshi ; Muraguchi, Masahiro ; Osafune, Kazuo
Author_Institution :
NTT LSI Lab., Kanagawa, Japan
fDate :
10/1/1992 12:00:00 AM
Abstract :
A 15-GHz fully monolithic low-phase-noise VCO MMIC fabricated without an external tuning element using an AlGaAs/GaAs HBT technology was developed. An HBT and a variable capacitance diode or varactor were fabricated in an MMIC chip using-standard HBT IC process. A tuning range of about 600 MHz was obtained with varying control voltage from 0 to 4 V with an output power of more than -4 dBm. The low phase noise for an offset frequency of 100 kHz of -85 dBc/Hz was measured at a frequency of 15.6 GHz
Keywords :
III-V semiconductors; MMIC; aluminium compounds; bipolar integrated circuits; gallium arsenide; heterojunction bipolar transistors; microwave oscillators; tuning; varactors; variable-frequency oscillators; 0 to 4 V; 15 GHz; HBT IC process; HBT technology; SHF; VCO MMIC; low-phase-noise; monolithic microwave IC; tuning; varactor; variable capacitance diode; Capacitance; Diodes; Frequency; Gallium arsenide; Heterojunction bipolar transistors; MMICs; Tuning; Varactors; Voltage control; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
