Title :
A 20-GHz-band subharmonically injection-locked oscillator MMIC with wide locking range
Author :
Kamogawa, Kenji ; Tokumitsu, Tsuneo ; Toyoda, Ichihiko
Author_Institution :
NTT Wireless Syst. Labs., Kanagawa, Japan
fDate :
8/1/1997 12:00:00 AM
Abstract :
A monolithic subharmonically injection-locked oscillator (ILO) with wide frequency tuning range using a shunted varactor diode inserted to the oscillation loop is presented. A 20-GHz-band ILO is fabricated that achieves the wide injection locking range of more than 700 MHz at each subharmonic factor up to 32. In addition, the phase-noise degradation rate of the ILO against the subharmonic factor is close to 6 db/oct. The ILO configuration is extremely suitable for realizing low cost and low-phase-noise millimeter-wave monolithic microwave integrated circuit (MMIC) sources
Keywords :
HEMT integrated circuits; MMIC oscillators; circuit tuning; field effect MMIC; injection locked oscillators; integrated circuit noise; phase noise; varactors; 20 GHz; HEMT IC; MMIC tunable oscillator; SHF; frequency tuning range; low-phase-noise sources; phase-noise degradation rate; shunted varactor diode; subharmonically injection-locked oscillator; wide locking range; Costs; Degradation; Diodes; Frequency; Injection-locked oscillators; MMICs; Microwave integrated circuits; Millimeter wave integrated circuits; Tuning; Varactors;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
