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Parallel-plate mode reduction in conductor-backed slots using electromagnetic bandgap substrates

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3 Author(s)
Shumpert, J.D. ; Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA ; Chappell, W.J. ; Katehi, L.P.B.

By fabricating a resonant slot over a reflecting back plate and filling the resulting parallel-plate with an appropriately designed artificial electromagnetic bandgap (EBG) structure, noticeable enhancements in both radiation pattern and bandwidth are achieved using a significantly lower profile than traditional designs. This design uses a two-dimensional artificial EBG substrate in conjunction with a reflecting plate to completely block radiation from the backside of the slot from propagating to the finite edges of the resulting parallel-plate cavity. Measured and simulated data for conductor-backed slots with homogeneous substrates and with EBG substrates are compared

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 11 )