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Development of EQM (engineering qualified model) local oscillator for KA‐band satellite transponder
Author(s) -
Ryu KeunKwan,
Lee MoonQue,
Yom InBok,
Lee SeongPal
Publication year - 2003
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.11327
Subject(s) - dbc , phase noise , transponder (aeronautics) , electrical engineering , microwave , ka band , dielectric resonator , satellite , resonator , engineering , optoelectronics , materials science , electronic engineering , telecommunications , aerospace engineering
A low‐phase‐noise engineering qualified model (EQM) local oscillator (LO) has been developed for a Ka‐band satellite transponder. A voltage controlled dielectric resonator oscillator (VCDRO) is designed using a high‐impedance inverter coupled with a dielectric resonator to improve the phase‐noise performances. This EQM LO was made as an environmental experiment for space application and applied to a Ka‐band satellite transponder of the EQM level. The LO has harmonic suppression characteristics above 53 dBc and output power of 14.0 dBm ± 0.17 dB over the temperature range of −15–+65°C. The phase noise characteristics are exhibited as −102.33 dBc/Hz at 10 KHz and −114.33 dBc/Hz at 100‐KHz offset frequencies, respectively. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 198–200, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11327