Title :
Low-noise room-temperature parametric amplifier
Author :
Lau, P.K. ; Watson, P.A.
Author_Institution :
University of Bradford, Postgraduate School of Electrical & Electronic Engineering, Bradford, UK
Abstract :
The use of the phase-locked degenerate parametric amplifier in digitally modulated communication systems has been proposed. In the letter, we report successful operation of this device as an amplifier for high-speed phase-shift-keyed signals. Noise temperature measured on a 4 GHz device by a system (error-rate) measurement and by a Y factor method give a noise temperature of 46 K, including 11 deg K from the circulator, with the amplifier at room temperature.
Keywords :
digital communication systems; parametric amplifiers; phase shift keying; digital communication systems; error rate; low noise room temperature parametric amplifier; noise temperature; phase shift keyed signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19730430
