Accession Number : AD0867916

Title :   Solid-State BWO Modulator.

Descriptive Note : Research and development rept., Apr 66-Apr 69,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CA

Personal Author(s) : Mott, M. H. ; Kavanagh, D. B.

Report Date : 08 DEC 1969

Pagination or Media Count : 34

Abstract : An S-band linear FM (chirp) signal generator, utilizing a backward wave oscillator (BWO) and a solid-state BWO modulator-driver circuit, was developed as part of an experimental high-range-resolution radar. The modulator-driven BWO was found to have a 3.5 to 2.9 GHz linear sweep with a 600-MHz bandwidth; a 0.300 microsecond pulsewidth; and a pulse compression ratio or time-bandwidth product of 180. In addition, it has the capability of operating to a maximum prf of 25 kHz without distortion of the chirp signal, and its maximum deviation from linear FM is less than 0.07 percent. (Author)

Descriptors :   *BACKWARD WAVE AMPLIFIERS), (*RADAR EQUIPMENT, MODULATORS), (*MODULATORS, (*SIGNAL GENERATORS, RADAR EQUIPMENT), PULSE COMPRESSION, FREQUENCY MODULATION, S BAND, RESOLUTION.

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE