AM broadcast antennas with elevated radial ground systems

Author

Christman, A. ; Radcliff, R. ; Adler, D. ; Breakall, J. ; Resnick, Al

Author_Institution

Dept. of Electr. & Comput. Eng., Ohio Univ., Athens, OH, USA

Volume

34

Issue

1

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

75

Lastpage

77

Abstract

Results are presented of computer modeling studies indicating that an elevated vertical monopole antenna with four elevated horizontal radials produces more ground-wave field strength than does a conventional ground-mounted monopole with 120 buried radials. For the analysis, the length of the radials and the height of the monopole were set equal to 0.25 of the free-space wavelength, and the frequency of operation was fixed at 1.0 MHz. Three different sets of ground constants were used, simulating averaging, very good, and very bad soil electrical parameters in accordance with the Numerical Electrical Code (NEC-GS)

Keywords

broadcast antennas; radio transmitters; 1.0 MHz; AM broadcast antennas; MF; computer modeling; elevated radial ground systems; ground-wave field strength; vertical monopole antenna; Cities and towns; FCC; Frequency; Laboratories; Poles and towers; Radio broadcasting; Soil; System testing; Transmitting antennas; Wires;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.1415

Filename

1415