Deployable antennae design alternatives
Abstract
To have a large spectrum of design and decision criteria, some RF configurations of microwave reflector antennas which seem to achieve the best RF properties, especially in a deployable configuration, are considered. Antenna concepts suitable for the 12 GHz range (high surface accuracy, low weight, and high stiffness) were considered. An RF configuration with about 3m diameter and 12 GHz operation frequency was selected. Based on this configuration, a comparison of deployable antenna concepts including radial rib antennas, petal antennas, and hybrid systems combining rigid central part with either radial rib or petal was made. A principle error analysis considering mechanical errors and thermal deformation on a deployable antenna with big diameter is presented, as well as thermal control means to minimize the thermal deformations for antenna concepts with rib and reflecting networks and antenna concepts with deployable sandwich panels.
- Publication:
-
In its Study of Deployable Antennas for Satellites 105 p (SEE N76-12233 03-32
- Pub Date:
- March 1975
- Bibcode:
- 1975sdas.nasaQ....F
- Keywords:
-
- Antenna Design;
- Microwave Antennas;
- Satellite Antennas;
- Structural Design Criteria;
- Antenna Feeds;
- Deformation;
- Deployment;
- Error Analysis;
- Parabolic Antennas;
- Performance Prediction;
- Radio Frequencies;
- Ratings;
- Reflectors;
- Temperature Effects;
- Communications and Radar