A Modal Description of Multiport Antennas

This paper presents a modal description of multiport antennas that leads directly to a rigorous network representation and simple quadratic expressions for gain, efficiency, and effective area. The analysis shows that the transmitting and receiving properties of an N element antenna array are exactly described by a 2N?2N element scattering matrix together with a set of N orthonormal mode functions and accounts for effects such as mutual coupling, scattering, reflection, and losses. The approach is quite general, only requiring that the antenna be finite and reciprocal.

Provided by: Hindawi Publishing Topic: Banking Date Added: Jun 2011 Format: PDF

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