Abstract
The reflector antenna and feed system of an 11-m diameter earth-station that operates in circular polarisation at X-band is described. The reflector-optics are required to have high G/T, sidelobes that satisfy the CCIR recommendation and low mismatch at the feed. The feed system is required to have high isolation between the transmit and receive ports (> 40 dB) at the centre of the band. This isolation is achieved by minimising reflections from all components forward of the polariser. The measured performance of the reflector and feed system is described.
Original language | English |
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Pages (from-to) | 57-63 |
Number of pages | 7 |
Journal | Journal of Electrical and Electronics Engineering, Australia |
Volume | 16 |
Issue number | 1 |
Publication status | Published - Mar 1996 |
Externally published | Yes |