Title :
A Ka-band MMIC oscillator stabilized with a micromachined cavity
Author :
Kwon, Youngwoo ; Cheon, Changyul ; Kim, Nyuntae ; Kim, Chungwoo ; Song, Insang ; Song, Cimoo
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., South Korea
fDate :
9/1/1999 12:00:00 AM
Abstract :
Low-cost stable oscillators with good phase noise performance are in high demand for emerging millimeter (mm)-wave commercial applications. To overcome the problems of conventional DROs and cavity oscillators at mm-waves, a new type of oscillator based on micromachining techniques is developed at Ka-band. A cavity resonator is fabricated using micromachining techniques and is employed to stabilize a 33-GHz monolithic microwave integrated circuit (MMIC) oscillator. A micromachined cavity oscillator (MCO) showed a phase noise of -113 dBc/Hz at 1 MHz offset, which is an 18-dB improvement over an MMIC free-running oscillator (FRO). This work demonstrates the great potential of MCO for low-cost mm-wave frequency sources
Keywords :
MMIC oscillators; cavity resonators; integrated circuit noise; phase noise; 33 GHz; Ka-band; MMIC oscillator; cavity resonator; low-cost mm-wave frequency sources; micromachined cavity; phase noise performance; Cavity resonators; Frequency; MMICs; Micromachining; Microstrip; Microwave integrated circuits; Microwave oscillators; Monolithic integrated circuits; Phase noise; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
