Title :
A shallow ridged-cavity crossed-slot antenna for the 240- to 400-MHz frequency range
Author :
King, H.E. ; Wong, J.L.
Author_Institution :
Electronics Res. Lab., Aerospace Corp., El Segundo, CA, USA
fDate :
9/1/1975 12:00:00 AM
Abstract :
An experimental study has been made of a shallow ridged-cavity crossed-slot antenna to determine its feasibility for operation in the 240- to 400-MHz band. The various trends are summarized for the VSWR response characteristics as the cavity and slot parameters are varied. The wideband antenna characteristics using a ridged cavity configuration are demonstrated. Based on the limited amount of data obtained from the experimental model, the VSWR is < 2.7:1 from 240 to 270 MHz and < 2.1:1 from 290 to 400 MHz for a cavity with a maximum dimension of 33 by 33 by 4 in. Measured radiation patterns with the cavity mounted on a finite-size fiat ground plane are shown.
Keywords :
Aircraft antennas; Slot antennas; UHF antennas; VHF antennas; Aircraft; Antenna measurements; Broadband antennas; Feeds; Polarization; Probes; Resonant frequency; Shape; Slot antennas; Wideband;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1975.1141138
