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The effect of quasi-optics errors on reflector antenna performance

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2 Author(s)
Foster, P.R. ; Microwave & Antenna Syst., Great Malvern, UK ; Wylde, R.J.

The use of quasi-optics feed systems with a reflector antenna allows multiple-frequency operation over a very wide bandwidth for remote sensing of the Earth and atmosphere from space. The errors in such a multichannel quasi-optical feed system must be controlled in order to limit the degradation of system performance. These errors can be attributed to the presence of higher-order Gaussian modes, but the errors can be minimized if the quasi-optical system can be made independent of frequency. If volume limitations preclude a frequency-independent design, the amplitude of the higher-order Gaussian modes must be controlled

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:40 ,  Issue: 6 )