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Derivation and application of the equivalent paraboloid for classical offset Cassegrain and Gregorian antennas

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4 Author(s)
Rusch, W. ; Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA ; Prata, A., Jr. ; Rahmat-Samii, Y. ; Shore, R.A.

The equivalent paraboloid is derived for classical offset Cassegrain and Gregorian antennas. The important practical case of systems with circular exit apertures is discussed in detail, and a condition for a symmetric equivalent paraboloid is derived. For such systems, diffraction effects are investigated using tapered and scanned feeds to illuminate the equivalent paraboloid and the two-reflector system

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Antennas and Propagation, IEEE Transactions on  (Volume:38 ,  Issue: 8 )