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This article presents the design of a novel ultra-wideband microstrip fed planar monopole antenna with dual band-notched characteristics. The shape of the antenna is a smiling face with double braids; its lovely and simple design has advantage to beatify the product By etching a mouth-shaped slot in the radiating patch and adding a double braids-shaped strip on the top, the dual notched bands for...
A novel design of a dual-frequency circularly polarized annular ring slot antenna is presented. The dual-frequency characteristic is achieved using a single-layer double-bent microstripline-fed configuration coupled to a dual-annular ring slot antenna. The 10 dB return loss impedance bandwidths (VSWRles2) for the lower and higher band are 31.3% and 10.6%, respectively. The 3 dB axial-ratio bandwidths...
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