Design of the Dielectric Resonator Oscillator with Buffer Amplifier

Abstract

A new structure of microwave field effect transistor Dielectric Resonator Oscillator (DRO) working at 8.5GHz is presented with negative resistance theory and harmonic balance theory. In order to magnify the output power and enhance the load pulling, a Buffer Amplifier (BA) is designed after the DRO. The nonlinearity and linearity of this structure are analyzed and optimized with commercial software ADS. Then the properties of this structure are simulated with commercial software HFSS. Simulation results show that DRO co-integrated with BA a high output power of 13.426dBm, at an oscillation frequency of 8.5GHz.

Cylindrical Dielectric Resonator as Dielectric Matching on Microwave Amplifier for the Unconditionally Stable and Conditionally Stable Transistor at 5 GHz Frequency

“…Besides that, the microstrip line configuration is also another important consideration that can influence the performance of the microwave circuits. The idea is to investigate the microstrip line configuration which is adopted by [27][28][29]. This microstrip line configuration is represented as coupling configuration between the DR and monolithic microwave integrated circuits (MMICs) in [28] as the new developments to improve high output power [27] and the phase noise [28] of the dielectric resonator oscillator (DRO).…”

“…The idea is to investigate the microstrip line configuration which is adopted by [27][28][29]. This microstrip line configuration is represented as coupling configuration between the DR and monolithic microwave integrated circuits (MMICs) in [28] as the new developments to improve high output power [27] and the phase noise [28] of the dielectric resonator oscillator (DRO). In this article, this microstrip line configuration is investigated to explore the frequency changes of the microwave amplifier, where it should be operated at 5 GHz frequency.…”