Title :
A modified Goubau-type antenna with two octaves of impedance bandwidth
Author :
Cobos, Luis ; Foltz, Heinrich D. ; McLean, James S.
Author_Institution :
Univ. of Texas - Pan American, Edinburg, TX, USA
Abstract :
This paper presents a design for a broadband, multielement, top-loaded monopole. The antenna is similar to the well-known Goubau antenna, but has an undivided loading disk, folded parallel strip vertical elements with dielectric loading, and an additional radiating element centered under the top-disk. These modifications allow more versatility in tuning and extend the high frequency end of the response. A bandwidth of two octaves (380-1530 MHz) for 2:1 VSWR has been obtained for an antenna with a height of 6.6 cm, a diameter of 18.3 cm, and no external tuning elements.
Keywords :
broadband antennas; dielectric-loaded antennas; monopole antennas; tuning; 18.3 cm; 380 to 1530 MHz; 6.6 cm; broadband antenna; dielectric loading; folded parallel strip vertical elements; impedance bandwidth octaves; modified Goubau-type antenna; multielement antenna; radiating element; top-loaded monopole antenna; tuning; undivided loading disk; Antenna theory; Bandwidth; Costs; Dielectrics; Impedance; Loaded antennas; Passband; Research and development; Resonant frequency; Tuning;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1332022
