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 |