H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/27, 351/51
H01Q 15/02 (2006.01) H01Q 15/08 (2006.01) H01Q 15/10 (2006.01) H01Q 19/06 (2006.01)
Patent
CA 1186406
Abstract Disclosed is a microwave lens of low weight and cost which may be used in communication satellites. The lens can be used with a simple feed, such as a horn, and achieves low cross-polarization levels. Flush mounting of the lens is possible. The lens comprises a plurality of parallel flat supports of dielectric material, each carrying at least one array of commonly orientated conductive dipole elements arranged in regularly spaced rows and columns. For circular polarization, crossed dipole elements can be provided. The supports may be formed of glass fibers and resin or plastic. Each dipole array can produce either positive or negative phase shift depending on the frequency of operation. By suitably scaling an array, the phase and phase versus frequency can be chosen at a given frequency. The phase, phase versus frequency, and attenuation characteristics can be controlled by choosing suitable scale factors, the required number of arrays, and their physical separation.
403521
Her Majesty The Queen In Right Of Canada As Represented By The M
Smart & Biggar
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