New Variable for Fresnel Zone Plate Antennas
Abstract
I present experimental results and analysis on the application of a new variable in the design of zone plate antennas. This variable is the choice of phase reference used in the definition of the Fresnel zones from which zone plates arc constructed. The standard zone plate construction assumes a specific choice for this reference phase which, however, can be chosen to have any value between 0 degrees and 360 degrees. When the reference phase is varied, antenna pattern measurements reveal small systematic changes in the main lobe gain accompanied by large improvements in the overall sidelobe level and position in both the E- and H-planes. Measurements also show that through variation of the reference phase, the phase of the main lobe can be varied controllably through 3600. I conclude that reference phase is a useful new tool available to the zone plate antenna designer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2003
- Accession Number
- ADP017231
Entities
People
- G. W. Webb
Organizations
- University of California, San Diego