Wideband heterodyne receiver for laser communication system
Abstract
A heterodyne receiver for laser communication is described which includes a front end having a cooled photomixer contained in a hermetically sealed spaced quality housing designed for wide bandwidth transmission. The photomixer is coupled through a wideband preamplifier to the receiver back end which includes a frequency tracking network and demodulating equipment. The receiver is capable of tracking a Doppler frequency shift of 750 MHz, positive or negative, and has an instantaneous intermediate frequency information bandwidth of 400 MHz. The receiver system is also capable of operating over a wide temperature range and is designed to be suitable for use in outer space communication.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- July 1977
- Bibcode:
- 1977nasa.reptR....F
- Keywords:
-
- Lasers;
- Optical Communication;
- Optical Heterodyning;
- Receivers;
- Wideband Communication;
- Doppler Effect;
- Patents;
- Signal Processing;
- Space Communication;
- Thermal Environments;
- Communications and Radar