Constant-output-frequency, octave tuning range backward-wave parametric amplifier

Autor:	S. Okwit, E.W. Sard
Rok vydání:	1961
Předmět:	Physics Amplifier Acoustics Mode (statistics) Range (statistics) Electronic engineering Electrical and Electronic Engineering Parametric oscillator Constant (mathematics) Octave (electronics) Signal Varicap Electronic Optical and Magnetic Materials
Zdroj:	IRE Transactions on Electron Devices. 8:540-549
ISSN:	0096-2430
DOI:	10.1109/t-ed.1961.14874
Popis:	This paper describes a varactor diode backward-wave parametric amplifier (BWPA) which operates in a new mode that yields a constant-output frequency as the amplification frequency is electronically turned over an octave signal tuning range. A theoretical discussion on the design considerations is presented and applied to the construction of an LF model (1.5-3.3 Mc). Experimental data on the important amplifier characteristics are given and shown to correlate well with theory. The amplifier yields stable gains in excess of 20 db over a greater-than-octave tuning range, and the output frequency (which is taken at the idler) has less than a ± 1.6 per cent variation over the octave band. The over-all effective receiver input-noise temperatures were measured and agreed well with theory, being about 160°K at the LF end of the band and increasing to 300°K at the HF end.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6fdaaed0a91841c308b9b7c11e38c3a2 https://doi.org/10.1109/t-ed.1961.14874 Zobrazit plný text záznamu