OPTIMIZATION OF THE YAGI ARRAY, II.
Abstract
The computer programs for optimizing the Yagi array, which were written in FORTRAN for the IBM 7094 computer, are discussed in detail. These programs employ the modified quasi-zero-order theory as well as certain techniques which reduce the execution time and facilitate the reduction of data. Typical printout from the four options of the main program is also included. Detailed investigations of the 1- and 4-director Yagi arrays (with directors of constant length, radius, and spacing) are summarized in the form of contour maps for forward gain, backward gain, front-to-back ratio, input resistance, and input reactance. Horizontal field patterns and vector diagrams are presented for 1-, 2-, and 4-director arrays having maxima in forward gain or front-to-back ratio. The method used to search for these maxima is outlined. With the director length fixed at 0.43 lambda, a comparison is made between the 1-, 2-, 4-, and 8-director Yagi arrays. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 16, 1965
- Accession Number
- AD0616911
Entities
People
- I. Larry Morris
Organizations
- Harvard University