FORESHORTENED LOG PERIODIC DIPOLE ARRAY,
Abstract
The development is described of a constant-width log periodic dipole array with inductively loaded radiating elements. A varying amount of inductive reactance is introduced to the equal length elements, resulting in elements of varying electrical lengths for broad-band operation. While maintaining a constant element-spacing-toelectrical-length ratio and compensating for the increasing Q of the loaded elements by increasing the design ratio, good experimental results were obtained from antenna models with element foreshortenings up to two-to-one. An expression for the varying design ratio is developed, the approximate amount of inductive reactance necessary for a given amount of element foreshortening is shown, and performance data of an experimental model are given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 12, 1963
- Accession Number
- AD0431250
Entities
People
- Claes T. Elfving
- Herbert Rosenthal
Organizations
- Sylvania Electric Products