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Antenna GT Degradation with Inefficient Receive Antenna at HF

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This paper presents the antenna G/T degradation incurred when communications systems use very inefficient receive antennas.

This work is relevant when considering propagation predictions at HF (2-30 MHz).

At these HF it is commonly assumed that antennas are efficient/lossless and external noise dominates over internally generated noise at the receiver.

Knowledge of the antenna G/T degradation enables correction of potentially optimistic HF predictions.

Simple rules of-thumb are provided to identify scenarios when receive signal-to-noise ratios might be degraded.

M. C. Walden, “Antenna G/T Degradation with Inefficient Receive Antennas at HF (2-30 MHz)”, IEEE International Antennas and Propagation Symposium, San Diego, CA, USA, 9–14 July 2017.

doi: 10.1109/APUSNCURSINRSM.2017.8072642

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