FREQUENCY CONVERTER UNITS FOR L-BAND, S-BAND, C-BAND, AND X-BAND.
Abstract
The match of the L-band version of the 3 db hybird four-crystal converter using cutoff 1N53B crystals was significantly improved to values very close to specification. The double-balanced modulator based on the TE11 mode in coaxial line was constructed. Preliminary tests were begun using four curoff 1N53B diodes. Up conversion with a loss of 12 db was achieved in spiet of some difficulties in matching the input and output ports. Work was continued on the distributed crystal holder approach, with four cutoff 1N53 crystals. A more sophisticated holder was made that enabled L. O. power (RF bias) to be applied to the crystals. The results look promising and work is continuing. Improved rectangular high pass filters were designed and are being manufactured. Several versions of frequency converters were readied and sent to the Naval Research Laboratory for examination and display. Three developmental klystrons were delivered for the L.O. frequencies of 28.5, 31.0, and 31.5 Gc. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 15, 1964
- Accession Number
- AD0439645