Miniature Planer Monopole Antenna with Dual-Band Rejection Characteristics for UWB Applications

A novel and compact monopole antenna with dual-band notch functionality is presented for ultra-wideband applications. The band notches are realized by nesting two slots within the radiating patch, which are constituted by etching a symmetrical Г-shaped slot in the form of a meandering line, and the second slot is a U-shaped slot. Cross-coupling between the slot elements is designed to be minimal. Experimental results show that the prototype antenna of dimensions 17 × 10 × 1.6 mm3 exhibits an impedance bandwidth extending from 3.1 to 12 GHz for VSWR ≤ 2, except at the two stop band located between 4.96 and 5.95 GHz (WLAN) and 7.725–8.5 GHz (ITU-R). Moreover, the antenna has good radiation characteristics, a stable gain and good time-domain behavior to satisfy the requirement of the current wireless communication standards. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1977–1981, 2013