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New accurate formulas for calculating the complex propagation constant of the open microstrip line working in its first higher mode are presented. The results obtained from these formulas agree well with those calculated with the finite difference time domain method and other presented data.
A compact printed ultra-wideband (UWB) monopole antenna with dual band-notched characteristics is presented. One complementary split-ring resonator (CSRR) is etched inside the patch of the monopole antenna to achieve dual notch frequency bands. A practical example for a UWB antenna (working from 2.90 to 12 GHz) is demonstrated, with one notch frequency band at 3.40-3.48 GHz and the other at 5.40-5...
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