Broadband antennas

Details Broadband antennas Broadband antennas

H - Electricity

01

Q

H01Q 13/20 (2006.01) H01Q 13/00 (2006.01) H01Q 13/02 (2006.01)

Patent

CA 2096177

A structure for use in an antenna or as a broadband electromagnetic field simulator having an open horn TEM waveguide coupled to launch energy in a strip line formed between a forwardly extending plate section and a ground plane. When used as a simulator the test volume is located outside the horn between the forwardly extending plate section and the ground plane. The plate section which functions gas a radiating element initially extends parallel to the ground plane and then curves downwardly to terminate adjacent it. In alternative embodiments the plate section extends upwardly, initially with an exponential configuration. In a simulator embodiment it may then terminate at a vertical, grounded wall faced with anechoic material. The horn contains a flat conductor plate positioned parallel to and spaced from the top edge defining an asymmetrical transmission line within the horn. This plate conductor can be coupled to the forwardly extending plate section directly, by means of an RLC coupling network or by means o~ an array of literally spaced conductors.

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