| 摘要 |
A car radar duplexing arrangement for permitting a ingle antenna to transmit and receive electromagnetic radiation, comprising a circular waveguide, a waveguide coupling arrangement for coupling energy between two conductive lines and said circular waveguide, wherein said two conductive lines comprise mutually orthogonal conductors disposed normally with respect to the waveguide axis, and each extending through a respective aperture in the wall of said waveguide, a polariser disposed within the waveguide for conversion of linear waves into circular waves and vice-versa, and an antenna feed in communication with the polariser to transmit and receive circular waves.
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