X-BAND MASER RECEIVER COMPLEX.
Abstract
A receiving complex is described. It was installed at the Trebein site near Wright-Patterson Air Force Base and was to be used as the ground receiving station for Project Leapfrog. The system was designed to study the capability and performance using a belt of orbiting resonant dipoles as reflectors for microwave communications. A twin cavity maser preamplifier is used to obtain low-noise performance at 7750 and 8350 mc. The measured equivalent noise temperature of the receiver is approximately 50 K. A 13.5-foot parabolic reflector is used, having a high F/D ratio. This resulted in extremely low side-lobe gains, thereby increasing the system signal-to-noise ratio. The antenna is mounted upon a modified SCR-584 radar mount. The system local oscillator has a short-term stability of 1 x 10 to the -8th power, permitting accurate signal frequency determination. The oscillator stability is obtained by the use of crystal oscillator and varactor multipliers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1964
- Accession Number
- AD0430101