Open AccessPhase Noise Reduction of Microwave HEMT Oscillators Using a Dielectric Resonator Coupled by a High Impedance Inverter
Author(s) -
Lee MoonQue,
Ryu KeunKwan,
Yom InBok
Publication year - 2001
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.01.0201.0401
Subject(s) - phase noise , dielectric resonator , high electron mobility transistor , inverter , materials science , optoelectronics , resonator , electrical impedance , electrical engineering , noise (video) , coupling (piping) , microwave , electronic engineering , engineering , telecommunications , transistor , computer science , voltage , artificial intelligence , metallurgy , image (mathematics)
The phase noise reduction in a configuration of the HEMT oscillator with a dielectric resonator coupled by a quarter‐wavelength impedance inverter is investigated. Two HEMT oscillators for a satellite payload system are manufactured in the same configuration except for the coupling configuration of the dielectric resonator (DR) in order to empirically demonstrate the phase noise reduction. Experimental result shows that a phase noise reduction by 14 dB can be enhanced by increasing the characteristic impedance of a coupling microstrip impedance inverter.