Abstract
An analysis of BWG (beam waveguide) antennas that considers the presence of the wall is presented. The new BWG wall analysis is conceptually similar to the physical optics analysis used in reflector antenna analysis. The results of the wall analysis of a 34-m antenna (DSS 13 in the NASA/JPL deep space network) are discussed. The projected mirror diameter is approximately 2.4 m, or approximately 19 wavelengths at the analysis frequency of 2.295 GHz. Initial results reveal the potential for BWG antenna design improvement. It was found that there are only a few significant modes propagating between the two curved mirrors. It is noted that the greater accuracy of the wall analysis model at lower frequencies should enable more cost-effective designs of BWG antennas. >
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