Study of installing TV transmitting antennas of different frequency channels on the same horizontal plane of a transmitting tower

Author

Sun, N.-H. ; Jie, W.

Author_Institution

Radiat. Lab., Shanghai Univ. of Technol., China

fYear

1988

fDate

6-10 June 1988

Firstpage

1335

Abstract

The radiation characteristics of dipoles near a reflecting cylinder are analyzed, and the possibility of installing TV transmitting antennas of two frequency channels on the same horizontal plane of a transmitting tower is investigated by using a combination of the moment method and the theory of reciprocity. The computational results show that, in general, a circular cross-section of the transmitting tower is a favorable shape to obtain better omnidirectional radiation patterns for different frequency channels. Although only some specific shapes of the cylinder cross-section and channels are considered, the technique is suitable for this type of problem with arbitrary shapes and other channels.<>

Keywords

antenna radiation patterns; broadcast antennas; dipole antennas; television antennas; TV transmitting antennas; VHF; circular cross-section; dipoles; installation; moment method; omnidirectional radiation patterns; radiation characteristics; reflecting cylinder; theory of reciprocity; transmitting tower; two frequency channels; Antenna radiation patterns; Antenna theory; Dipole antennas; Frequency; Moment methods; Poles and towers; Reflector antennas; Shape; TV; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1988. AP-S. Digest

Conference_Location

Syracuse, NY, USA

Type

conf

DOI

10.1109/APS.1988.94346

Filename

94346