This letter describes the design and measured results of a monolithic copla
nar (CP) transmission line-based GaAs MESFET dielectric resonator oscillato
r (DRO) for K/Ka-band applications. The dielectric resonator (DR) is on chi
p. The measured output power was 11 dBm at 26.17 GHz for a conversion effic
iency of 5.5%. The chip probed phase noise was -118.7 dBc at 1 MHz off carr
ier. This represents the first reported instance of a DRO being fabricated
using a CP transmission line topology.