Wide-Band Subharmonically Injection-Locked Oscillators Using Three-Dimensinal MMIC Technology

摘要

Subharmonically Injection-locked oscillators (ILO's) with very wide injection-locking ability are presented. Two types of ILO MMIC's with this ability are proposed. The oscillation frequency tuning function of the ILO MMIC is very useful for expan- sion of the injection locking range at higher subharmonics. One con- sists of a shunt varactor diode inserted into the oscillation loop, and the other incorporates avector-combining configuration with in-phase di- vider and 90 degree hybrid. Using three-dimensional MMIC's tech- nology which can offer miniature and high-density passive circuits, the vector-combining type ILO is formed in a very compact area of 1.7 mm~2.