Accession Number : AD0804842

Title :   ANTENNA BROADBANDING EXPERIMENTS.

Descriptive Note : Final rept. May 63-Nov 64,

Corporate Author : WESTINGHOUSE ELECTRIC CORP BALTIMORE MD

Personal Author(s) : Jacob, Mark I. ; Musk, Henry A. ; Singel, John B. ; Smythe, D. S. ; Stein, L. E.

Report Date : NOV 1966

Pagination or Media Count : 29

Abstract : Data rates on communications systems in the very low frequency (VLF) and low frequency (LF) ranges are restricted by the limited bandwidth available on practical antennas. This report describes the experimental results obtained in employing reactive networks and a solid state transmitter to enhance the effective bandwidth of Low Frequency transmitting antennas. Field tests demonstrated the effectiveness of this technique by means of PSK transmissions and narrow-band FM voice transmissions over an LF link. Bandwidth enhancement greater than 4:1 was achieved.

Descriptors :   (*ANTENNAS, BROADBAND), TUNED CIRCUITS, RADIO TRANSMITTERS, LOW FREQUENCY, PHASE MODULATION, FREQUENCY MODULATION, SPEECH TRANSMISSION, VERY LOW FREQUENCY, SWITCHING CIRCUITS.

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE