DEVELOPMENT OF AN E-BAND AMPLIFIER
Abstract
Effort continued towards the development of an E-band amplifier. Details are presented on the current status of relevant tube development, and the progress made on the non-reciprocal electrically-tunable filter employing YIG spheres. Previously reported problems - chiefly, cathodeheater burnouts and cathode-to-anode leakage were resolved. A newly designed support structure using two concentric thin-metal cones completely eliminated the problem. Operating temperature goal of 1200 C was successfully reached. Required heater power of the original support configuration was approximately 10 watts. The double heat shield requires 4.5 watts. Improvement in cathode emission was obtained by a factor of 30 over the type used in tube no. 1. The improvement was due chiefly to the utilization of a cathode cover. Tube no. 2 was fabricated and tested. The cathode used in tube no. 2 has 3X the activity of that used for tube no. 1. Testing of tube no. 2 discovered an open cathode cup connection; emission was an erratic function of charge buildup. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1962
- Accession Number
- AD0277950
Entities
People
- E.w. Kinaman
Organizations
- Watkins-Johnson Company