Abstract
The design and performance characteristics of single, dual and tri-band printed CPW monopole antenna covering UMTS (1.93–1.99 GHz), ISM (2.43–2.4835 GHz), WLAN 2.4 GHz, WiMAX 2.5 GHz and S-band 3 GHz frequencies band are reported. These antennas are based on a coaxially fed printed monopoles integrated in a planar configuration with capacitively loaded loops (CLLs) as its near-field resonant parasitic radiators (NFRP). In the proposed technology, the number of operating frequencies is determined by the number of CLLs. These antennas are geometrically simple and have a compact size. The simulated results of return loss, surface currents and radiation patterns are presented and discussed.
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