Electronic steering of antenna nulls for interference reduction
Abstract
The paper reports on theory, tests and design of a low-cost broadband radio-frequency device that combines signals from two antennas to selectively null interfering signals. The theory and analysis of limitations pertain to both manual and adaptive null control devices. Tests illustrate cases in which nulling works well and those where propagation features limit null effectiveness. An important result of the tests is recognition that much work remains to be done to determine optimum antenna pairs for particular types of interference. An analysis section provides equations of general use for designing alternative implementations.
- Publication:
-
IEE Proceedings F: Communications Radar and Signal Processing
- Pub Date:
- August 1983
- Bibcode:
- 1983IPCRS.130..417W
- Keywords:
-
- Adaptive Control;
- Antenna Design;
- Electromagnetic Interference;
- Electronic Control;
- Noise Reduction;
- Steerable Antennas;
- Design Analysis;
- Low Cost;
- Null Zones;
- Radio Antennas;
- Signal To Noise Ratios;
- Communications and Radar