Broadband Quadrifilar Phased Array Helix.
Abstract
A broadband quadrifilar phased array helix antenna is comprised of a pair of bifilar arrays spaced 90 deg on a coaxial fiberglass tube. A 90 deg feed phase exists between the bifilar arrays. Each bifilar array has three elements with the longest element having approximately twice the length of the shortest element and all three elements being of a length to give good broadband coverage over a specified range with specified shaped patterns being required. A 180 deg feed phase exists between adjacent elements. A number of trimming adjustments to the design of the antenna are presented for obtaining improved performance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 17, 1990
- Accession Number
- ADD015019
Entities
People
- Michael Josypenho
Organizations
- United States Department of the Navy