INVESTIGATION OF NOISE GENERATION IN ELECTRICALLY TUNABLE MICROWAVE OSCILLATORS
Abstract
Results are discussed which were obtained on the research project investigation of Noise Generation in Electrically Tunable Microwave Oscillators. Four aspects have been considered: signalto-noise calculations, noise measurements, noise cancellation techniques, and circuit aspects of noise. In the signal-to-noise calculations a linear theory for backward wave oscillators is being developed which is intended as a guide in the design of low-noise tubes. The approach is to use a digital computer to discover the tube parameters that yield optimum noise performance. New computer results are reported. A linear theory for traveling-wave tubes, based on a normal mode expansion of the tape helix is outlined. Two noise-measurement programs are discussed. Progress is reported on the development of apparatus to measure noise near the carrier. The design of a beam noise analyzer is described. The noise cancellation research which is discussed involves consideration of higherorder beam-mode effects in helical beam couplers and possible experimental applications. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1961
- Accession Number
- AD0261989
Entities
People
- G.c. Dalman
- P.r. Mcisaac
Organizations
- Cornell University