Reception of very weak signals
Abstract
The present work studies methods of realizing the reception of very weak signals which consist in improving the noise characteristics of the receiver. The noise characteristic of various types of antennas are examined, including parabolic and Cassegrain antennas and their modifications. The noise properties of parametric amplifiers and amplifiers using a tunnel diode or transmittor are reviewed along with those of travelling wave tubes.
- Publication:
-
Slaboproudy Obzor
- Pub Date:
- March 1975
- Bibcode:
- 1975SlaOb..36....1V
- Keywords:
-
- Cassegrain Antennas;
- Microwave Antennas;
- Parabolic Antennas;
- Parametric Amplifiers;
- Signal Reception;
- Signal To Noise Ratios;
- Antenna Design;
- Noise Temperature;
- Radio Astronomy;
- Traveling Wave Tubes;
- Tunnel Diodes;
- Communications and Radar