All-Metal Flared-Notch Array Radiator for Ultrawideband Applications
Abstract
This paper presents simulations and measurements of an all-metal flared-notch array element in both single-polarization and dual-polarization configurations. For broadside radiation, the ultrawideband radiator exhibits an operational bandwidth of 12:1 with active VSWR < 2. The simpleton manufacture feed consists of a direct coax-to-slot-line transition that mounts directly into the base of the element. The all-metal flared-notch elements are machined from common metal stock and fed via standard SMA coaxial connectors. No soldering is required for any part of the design including the feed and assembly is simple and modular. The array parts are machined using a high-precision wire-EDM cutting technology. This precision helps to ensure that measurements (in the 700 MHz to 9 GHz range) are repeatable and give close agreement with theory, even through multiple assembly cycles of the modular construction system. This paper presents results for a 32-element linear array of horizontal elements and also an 8x8 planar array of dual-polarized elements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 2010
- Accession Number
- ADA530583
Entities
People
- Rick W. Kindt
- W. R. Pickles
Organizations
- United States Naval Research Laboratory