A new microstrip frequency‐selective surface

The frequency-selective property of a concentric ring microstrip patch with a circular patch at its center has been investigated experimentally. Measured data indicate a 16 dB dip in the normalized transmitted electric field versus frequency plotted at a particular frequency. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 167–168, 2001.

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