Title :
Design of a broadband zig-zag pyramidal log-periodic antenna
Author :
Lippincott, Wendy L.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
A pyramidal zig-zag toothed log-periodic (LP) antenna with a customized cable quarter-wave transformer was developed as a dual-linear high-power feed for a large 60 foot diameter reflector with f/D of 0.49. The pyramidal design was chosen over a crossed log-periodic pole design since it provides matching E- and H-plane patterns (the broader H-plane is made narrower with the two opposing elements acting as an array in that dimension). Three separate antennas with frequency ranges of 0.2-0.5, 0.5-1, and 1-2 GHz were built.
Keywords :
UHF antennas; VHF antennas; antenna feeds; broadband antennas; log periodic antennas; E-plane patterns; H-plane patterns; broadband zigzag pyramidal log periodic antenna; cable quarterwave transformer; dual-linear high-power feed; frequency 0.2 GHz to 2 GHz; Antenna feeds; Broadband antennas; Cables; Conductors; Fasteners; Frequency; Log periodic antennas; Plastics; Reflector antennas; Teeth;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5172290
