Pattern degradation of space fed phased arrays
Abstract
The far field pattern degradation of space fed phased arrays suitable for a space based radar is examined. The effects considered are: Structural; (1) Axial lens surface distortions, (2) Uniform radial thermal expansion, and (3) Axial and lateral feed displacements; Electrical; (1) Element phase and amplitude excitation errors, and (2) Failed elements. An introductory section discusses the size, cost, and weight penalties of low sidelobe designs. The final section presents a method of phase compensation or coherence of large axial lens distortions.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1979
- Bibcode:
- 1979STIN...8026589R
- Keywords:
-
- Antenna Feeds;
- Antenna Radiation Patterns;
- Satellite Antennas;
- Signal Distortion;
- Three Dimensional Flow;
- Graphs (Charts);
- Phased Arrays;
- Thermal Expansion;
- Thermal Stability;
- Communications and Radar