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