NDLI: ISCAN - Inertialess steerable communication antenna

Content Provider	IEEE Xplore Digital Library
Author	Brueckmann, H. Gruber, J. Bramble, C.
Copyright Year	1966
Description	Author affiliation: U.S. Army Electronic Research and Development Laboratories, Fort Monmouth, NJ, USA (Brueckmann, H.)
Abstract	The main purpose of the new antenna system, described herein, is to enhance high-frequency communications by reducing the effects of multipath and interference. The experimental ISCAN system, designed for reception of long distance h-f communications, consists of two principal parts: a linear array of vertical dipoles over 6300 feet long and an electronic beam forming matrix. A single, fixed-beam radiation pattern is available at each of the 14 terminals of this matrix. The beams have the shape of coaxial conical shells and adjacent beams overlap each other at the half-power points. These beams are formed by the use of tapped delay cables which is an inherently broadband method. Inertialess scanning of an antenna beam is achieved by rapid switching of the 14 beams in sequence using electronic gating circuitry. This effectively scans the antenna beam up to 30 degrees off the array axis. A visual oscilloscope display is provided to show the relative outputs of the multiple beams at all times.
Starting Page	152
Ending Page	163
File Size	948610
Page Count	12
File Format	PDF
DOI	10.1109/IRECON.1962.1147021
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1966-03-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transmission line matrix methods Dipole antennas Shape Interference Coaxial components Linear antenna arrays Delay Antenna radiation patterns Cables Switching circuits
Content Type	Text
Resource Type	Article

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