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Operation of AM Broadcast Transmitters into Sharply Tuned Antenna Systems

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1 Author(s)
Doherty, W.H. ; Bell Telephone Laboratories, Inc., Murray Hill, N.J.

The impedance of some broadcast antenna arrays varies so much over the transmitted band as to impair the performance of the radio transmitter. The impairment consists in clipping of sidebands and distortion of the envelope at high modulation frequencies. This paper reports on an experimental determination of the nature and magnitude of this impairment and on its substantial reduction by suitable coupling methods.

Published in:

Proceedings of the IRE  (Volume:37 ,  Issue: 7 )