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![]() Antenna Structures Highly Stable Antenna Structures ![]() ![]() ![]() Thermoelastic distortions of parabolic reflector in hot case and gradient thermal cases [R1]. ![]() ![]() Sensitivity of peak thermal distortion to core thickness for given uniform temperature and gradient cases [R1]. ![]() ![]() Fig. 3. Flow of Data and Analysis Tools used to predict focal length variations of the Herschel telescope and FEM representation [R2]. ![]() ![]() Fig. 4. Stochastic simulation showing correlation of Herschel telescope focal length variation with materials coefficients of thermal expansion [R2]. ![]() ![]() Fig. 5. Ka-Sat 2.6 m Ka band reflector showing metallised reflecting face (courtesy Astrium-CASA). ![]() ![]() Fig. 6. STANT Gregorian multibeam antenna inside ESA’s compact antenna test range. ![]() ![]() Last update: 11 March 2013 |