Capacitatively Shunted Quadrifilar Helix Antenna
Abstract
A quadrifilar helix antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. A capacitive network, distributed along the length of the antenna, constitutes a variable frequency shunting network. At each position a first capacitive structure, that may comprise a single capacitor or multiple capacitors in series, interconnects a first pair of opposite antenna elements; a second capacitive structure interconnects the second pair of opposite antenna elements. As an applied frequency increases, the capacitive structures progressively short the opposite antenna elements thereby electrically reducing the antenna length.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 24, 2000
- Accession Number
- ADD019925
Entities
People
- Michael J. Josypenko
Organizations
- United States Department of the Navy