Short Axial Length Broadband Horns
Abstract
The report describes the development of two very broadband horns in which a substantial reduction in axial length, over that of earlier models, has been achieved. A significant requirement for both models is that of maintaining the half-power beam-width greater than thirty degrees over the very broad bandwidths involved. The first horn developed covers the frequency range from 1 GHz to 12 GHz with the flared portion of the horn having an axial length of six inches as compared with twelve inches for a previous design. The short axial length design was used as a basis in developing a very reasonably sized antenna operating in the range from 0.2 GHz to 2.0 GHz. A technique of fabricating the H-plane walls in the form of a grid was used in both horns as a means of controlling the H-plane patterns. The grid for the 1 GHz to 12 GHz horn was fabricated in printed circuit form while the grid elements of the lower frequency horn were made of aluminum tubing. Electrical performance characteristics of both models are presented in the form of radiations, VSWR, and gain curves.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1970
- Accession Number
- AD0714994
Entities
People
- John L. Kerr
Organizations
- United States Army Communications-Electronics Command