Multi-band horn antenna using frequency selective surfaces

Details Multi-band horn antenna using frequency selective surfaces Multi-band horn antenna using frequency selective surfaces

H - Electricity

01

P

H01P 1/20 (2006.01) H01Q 5/00 (2006.01) H01Q 13/02 (2006.01) H01Q 15/00 (2006.01)

Patent

CA 2467470

A waveguide (100) including at least one outer surface (105, 110, 115, 120) defining a waveguide cavity (140) and at least one inner surface (130, 135) positioned within the waveguide cavity (140). The inner surface (130, 135) includes a frequency selective surface (FSS) having a plurality of FSS elements (145) coupled to at least one substrate. The substrate defines a first propagation medium such that an RF signal having a first wavelength in the first propagation medium can pass through the FSS (130, 135). The FSS (130, 135) is coupled to a second propagation medium such that in the second propagation medium the RF signal has a second wavelength which is at least twice as long as a physical distance between centers of adjacent FSS elements (145). The second wavelength can be different than the first wavelength.

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