Multi-Channel Impulse Radiating Antennas with Polarization Diversity.
Abstract
The tri-impulse radiating antenna (IRA) and quad-IRA are derived here from earlier versions of Impulse Radiating Antennas. In the new designs, the aperature is divided into three, four, or more sections to provide at least two receive channels and at least one transmit channel, all within a very compact structure. The two receive channels allow reception in two orthogonal polarizations. This configuration is useful when searching for mines using the so-called "vampire" radar signature. This signature is a characteristic of certain manmade objects in certain symmetry configurations. Such objects cannot scatter any cross-polarized field, whereas natural objects scatter a stronger cross-polarized field component. In this report the radiated fields of the tri-IRA and quad-IRA are analyzed. The feed impedance is optimized and a model tri-IRA is built and tested in various configurations and compared to theoretical predictions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1999
- Accession Number
- ADA363740
Entities
People
- Carl E. Baum
- Everett G. Farr
- Leland H. Bowen
- William D. Prather