Radar stability self-test using bulk acoustic wave delay lines

Author

Sorrell, Perry A.

Author_Institution

Westinghouse Electric Corp., Baltimore, MD, USA

fYear

1990

fDate

23-25 May 1990

Firstpage

161

Lastpage

164

Abstract

An application of sapphire bulk acoustic wave (BAW) microwave delay lines to provide a built-in-test that measures both phase and amplitude noise sidebands for radar stability calculations is described. Stability measurements using a 15 microsecond sapphire BAW delay line have been made on 3 GHz moving target indicator (MTI) radars that support 65 dB clutter cancellation. Analysis of the 15 microsecond decorrelation of the associated -135 dBc/Hz stable local oscillator (STALO) noise shows that this technique for measuring radar system stability produces a STALO noise contribution that is only 1.2 dB less than independent continuous wave measurements made on the double sideband STALO noise

Keywords

acoustic delay lines; acoustic microwave devices; built-in self test; electric noise measurement; electronic equipment testing; microwave measurement; radar; stability; 15 mus; 3 GHz; 65 dB; Al₂O₃; amplitude noise sidebands; built-in-test; bulk acoustic wave; clutter cancellation; decorrelation; microwave delay lines; moving target indicator; phase noise; radar stability; sapphire; stability self-test; stable local oscillator; Acoustic measurements; Acoustic waves; Built-in self-test; Delay lines; Microwave measurements; Noise cancellation; Noise measurement; Phase measurement; Radar measurements; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control, 1990., Proceedings of the 44th Annual Symposium on

Conference_Location

Baltimore, MD

Type

conf

DOI

10.1109/FREQ.1990.177494

Filename

177494