An investigation of the design of a log-periodic dipole array with low side-lobe levels for broadcast applications

Author

Baker, D.C. ; Reuss, T.G.

Author_Institution

Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa

Volume

36

Issue

1

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

89

Lastpage

93

Abstract

The problem of cochannel interference is addressed. The ability of the Numerical Electromagnetics Code (NEC2) computer program to predict the radiation pattern of an antenna array on a mast is investigated. The evaluation and validation of NEC2 is undertaken by the comparison of measured and computed radiation patterns of log-periodic dipole antenna arrays. Emphasis is placed on the correspondence of the side-lobe levels -30 to -40 dB down from the main lobe. This is important in the synthesis of an array with predictable null positions and depths

Keywords

antenna arrays; antenna radiation patterns; broadcast antennas; broadcasting; dipole antennas; interference (signal); telecommunications computing; NEC2 computer program; Numerical Electromagnetics Code; broadcast applications; cochannel interference; design; log-periodic dipole array; low side-lobe levels; radiation pattern; Antenna arrays; Antenna measurements; Antenna radiation patterns; Application software; Broadcasting; Dipole antennas; Frequency; Interchannel interference; Log periodic antennas; Relays;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.52368

Filename

52368