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Two planar efficient wideband electrically small monopole filtennas are presented. The first one directly evolved from a common planar capacitively loaded loop (CLL)-based filter. This filtenna possesses a flat realized gain response within the operational band and good band-edge selectivity. The second filtenna consists of a driven element augmented with a CLL structure and with slots etched into...
A compact planar monopole antenna with dimensions of 34mm × 25mm × 1.6mm, which could provide an ultra-wide impedance bandwidth with the range from 2.40 GHz to 11.88 GHz is presented in this paper. The antenna consists of a small-sized ground plane, a hexagonal radiating patch, and two L-shaped parasitic strips close to the microstrip-line. Resorting to the two parasitic strips, two additional resonant...
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