Accession Number : AD0163895

Title :   Tunable Omnidirectional Antenna.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Richard,David J.

Report Date : 25 JUL 1972

Pagination or Media Count : 10

Abstract : The patent describes a physically planar omnidirectional antenna having two loaded, concentric, semicircular, radiating members. The antenna has a relatively uniform nominal impedance and a tunable operation over approximately a 3:1 bandwidth with a protrusion above the ground plane of less than one-tenth wavelength at the high frequency end of the operating bandwidth.

Descriptors :   (*OMNIDIRECTIONAL ANTENNAS, *PATENTS), TUNING DEVICES, PRINTED CIRCUITS, VERY HIGH FREQUENCY, ULTRAHIGH FREQUENCY

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE