DocumentCode
2690397
Title
A Low Phase Noise MMIC/Hybrid 3.0W Amplifier at X-Band
Author
Dao, T. ; Huettner, S. ; Platzker, A.
fYear
1986
fDate
2-4 June 1986
Firstpage
459
Lastpage
462
Abstract
A power amplifier characterized by low phase modulation of the signal is important for Doppler radar systems in signal detection. Phase noise performance of -145 dBc/Hz measured at 10 kHz away from the earner has been achieved with a MMIC/ hybrid FET 3.0W X-Band amplifier. A comparison with other power amplifiers such as IMPATTs, TWTs, and magnetrons shows that the MMIC/hybrid power amplifier has a lower phase noise level. It was found experimentally that the non-linearity operation of an amplifier and the instabilities of DC regulators are the primary sources of phase noise corruption. Circuit descriptions, performances and discussion of the phase noise behavior of individual stages and of the integrated amplifier module are presented.
Keywords
Doppler radar; FETs; Low-noise amplifiers; MMICs; Magnetrons; Noise measurement; Phase measurement; Phase modulation; Phase noise; Signal detection;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 1986 IEEE MTT-S International
Conference_Location
Baltimore, MD, USA
ISSN
0149-645X
Type
conf
DOI
10.1109/MWSYM.1986.1132220
Filename
1132220
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