UNFURLABLE ANTENNA TECHNIQUES FOR HIGH-GRAIN APPLICATIONS.
Abstract
An unfurlable four-element radiating system was built, which operates as a receiving array over a broad band and transmits four individually modulated beams at a single frequency, providing 120 degree coverage in both principal planes. The design, fabrication, and test results of the system are described. Conical spiral radiators were used and are discussed in detail. Radiation patterns are shown which indicate the bandwidth and the effects of mutual coupling. A narrowband corporate feed with four outputs within =0.1 db, and a wideband corporate feed solid-state modulator is discussed, and modulation wave forms are presented. Studies showed that three methods were feasible: Mylar-aluminum foil laminates rigidized by the inflation process, ultraviolet-rigidized resin, and ultravioletfoamed resin. Specimens rigidized by each of the three methods were tested to insure that all strength, rigidity, and temperature requirements were satisfied. Evaluation of the complete system gave good results. It is concluded that this type of antenna is quite feasible and holds a significant promise for future applications in space. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1963
- Accession Number
- AD0426230
Entities
People
- J. C. Polk
Organizations
- Teledyne Technologies