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A wideband array of non-uniformly spaced directional elements

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1 Author(s)

This paper discusses the design of an economical wideband array suitable for low-frequency radio astronomy applications. The array consists of 32 non-uniformly spaced, uniformly excited, log periodic antennae designed to operate over a 2 : 1 frequency band. At the highest operating frequency, the array has a beam-width of approximately 1° and side-lobes at least 16¿5 dB below the main beam level. The theoretical limit to which the'side-lobes of an idealized array, having the same gain and length, can be suppressed is 17 dB.

Published in:

Radio and Electronic Engineer  (Volume:35 ,  Issue: 1 )

Date of Publication:

January 1968

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