REFLECTOR ANTENNA ZOOM TECHNIQUES.
Abstract
The objective of this program is to provide an antenna design with a Zoom (variable beamwidth) capability with smooth continuous zoom action on transmit, multiple beam or monopulse beams on receive, and beam scanning over a limited angular range, while maintaining good beam characteristics. A computer program was written and used for calculation of far-field patterns in sin theta and theta space and contour plots in sin theta space. Subroutines are included in the program for a wide choice in aperture illumination -- both amplitude and phase. An analytical investigation of the ring array factor in infinite series form was completed and the results used as a tool in designing an aperture grid with low grating lobes. The theoretical limits of side lobe level as a function of the number of elements in the array were investigated, and the statistical results used as a criterion for evaluating the grids under study here, as well as those of some previous workers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1967
- Accession Number
- AD0807443
Entities
People
- T. E. Manwarren
Organizations
- General Electric