Analysis of Broadband High-Impedance Ground Plane Antenna Designs
Abstract
This research ties together computational and experimental analysis of two types of high-impedance ground plane (HIGP) antennas, One type of antenna consists of a proposed two-layer design. The structure consists of a bowtie antenna mounted over the surface of a HIGR The proposed structure was intended to achieve a resonant frequency of 3 GHz and a bandwidth of 48%; however, a design error results in a significant mismatch in operating bands between the antenna and HIGR Experiment results indicate the structure performs poorly across the entire measured band of 2-5 GHz. A new two-layer design is developed and presented. The new design takes advantage of lessons learned such as designing around material properties of readily available materials. Analysis of integrated, or one-layer, HIGP antennas are also presented. The one- layer versions utilize the exact same design parameters as their corresponding two-layer designs; the bowtie radiating element is simply positioned in the plane rather than over, the HIGR Results indicate the design error in the proposed two-layer structure affects the performance of the one-layer version less than the two-layer antenna. A comparison between the original and new integrated HIGP antennas show an improvement in input impedance, but a decrease in bandwidth.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2003
- Accession Number
- ADA415385
Entities
People
- James W. Stewart
Organizations
- Air Force Institute of Technology