Anti-skywave AM broadcast antenna design
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Authors
Hussain, Sarfraz.
Subjects
Monopole and dipole antennas
Numerical Electromagnetic Code (NEC)
Numerical Electromagnetic Code (NEC)
Advisors
Adler, Richard W.
Date of Issue
1987
Date
March 1987
Publisher
Monterey, California: U.S. Naval Postgraduate School
Language
en_US
Abstract
This thesis investigates the design of an anti-skywave (ASW) AM broadcast
antenna. The parameters of a typical AM broadcast antenna are presented first. Then
the design proposed by Richard L. Biby is studied by numerical modeling with the
Numerical Electromagnetic Code (NEC). Biby's proposed design involves a ring of
short radiators with a conventional monopole operating over finite ground. To analyze
the behaviour of Biby's proposed ASW antenna, a generic radiator study is conducted
to test the ability of different sized radiators to launch the sky wave and the ground
wave first as isolated elements and then as closely coupled radiators with cancelling
phasing. Finally, some potential candidate structures are proposed for AM broadcast
transmission which might achieve the desired characteristics of ground wave
enhancement and sky wave suppression.
Type
Thesis
Description
Series/Report No
Department
Electrical and Computer Engineering
Electrical and Computer Engineering
Organization
Identifiers
NPS Report Number
Sponsors
Funding
Format
178 p.: ill. 28 cm.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner.