Gaussian beam mode analysis of the coupling of power between horn antennas |
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| Authors: | J. A. Murphy M. McCabe S. Withington |
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| Affiliation: | 1. Experimental Physics Department, St. Patrick’s College, Maynooth, Ireland
2. Cavendish Laboratory, Madingley Road, Cambridge, England
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| Abstract: | Gaussian beam mode analysis can be applied in an elegant way to study the coupling of power between two horn antennas. Coupling efficiencies are evaluated for a number of horn combinations and the results presented in a straightforward form useful in the design of submillimetre-wave interferometers and astronomical receiver systems. We show that there is a marked variation in efficiency (up to 30%) depending on the coupling optics, even for beams with well matched profiles. |
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