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Investigation into broadband PBG using a butterfly-radial slot (BRS)

A new Butterfly-Radial Slot (BRS) structure has been proposed for broadband PBG applications. The BRS assisted PBG demonstrates broad bandwidth of over 70% and rejection of at least 40 dB in the band of interest. A design ratio has been derived and five sets of PBG structures have been designed, simulated and fabricated. Experimental and simulated results are in good agreement.