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A 20-GHz-band subharmonically injection-locked oscillator MMIC with wide locking range

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3 Author(s)
Kamogawa, K. ; NTT Wireless Syst. Labs., Kanagawa, Japan ; Tokumitsu, T. ; Toyoda, I.

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

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:7 ,  Issue: 8 )