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Signal/noise-ratio performance of loaded wire antennas

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1 Author(s)
Ramsdale, P.A. ; Royal Military College of Science, Swindon, UK

Expressions for the signal/noise ratio of an antenna and of a receiving system are derived. Both signal/noise ratios are degraded by reductions in antenna efficiency and directivity. Raising an inductor from the foot of a resonant short monopole will improve the signal/noise ratio. Resistance-loaded and other travelling-wave monopoles are less directional than corresponding standing-wave structures and degrade the antenna signal/noise ratio, but the broad-band system signal/noise ratio can be improved owing to better impedance matching

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:124 ,  Issue: 10 )