Title :
A low noise vibration isolated airborne radar synthesizer
Author :
Vulcan, A. ; Bloch, M.
Author_Institution :
Frequency Electron. Inc., Mitchel Field, NY, USA
Abstract :
A Ku-band synthesizer is described which incorporates both direct and indirect techniques to generate exceptionally pure signals with low phase jitter and spurious content. Fast switching speed and phase noise of -120 dBc/Hz from 10 kHz to 40 MHz were obtained. The radar operates in a fighter aircraft environment that has a high level of random vibration and static G loading, and the mechanical design incorporates vibration isolation techniques. The master oscillator, from which the various fixed and steppable frequency outputs are derived, uses a low-G-sensitivity SC cut crystal. Ku-band phase noise performance data are presented, and the correlation between anticipated and measured performance is discussed
Keywords :
frequency synthesizers; microwave circuits; military equipment; packaging; radar equipment; random noise; vibrations; 10 kHz to 40 MHz; Ku-band synthesizer; SC cut crystal; SHF; airborne radar synthesizer; direct techniques; fighter aircraft environment; indirect techniques; low noise; master oscillator; mechanical design; phase noise performance data; random vibration; static G loading; vibration isolation techniques; Airborne radar; Frequency measurement; Jitter; Military aircraft; Noise measurement; Oscillators; Phase noise; Signal generators; Synthesizers; Vibrations;
Conference_Titel :
Frequency Control, 1991., Proceedings of the 45th Annual Symposium on
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-87942-658-6
DOI :
10.1109/FREQ.1991.145918
