Abstract
The design of a compact micro strip line-fed Ultra-Wideband (UWB) monopole antenna with a notched-band characteristic is presented in this letter. The rejection frequency band occurs around 5- 6 GHz, which is appropriate for wireless local area network (WLAN) applications and is obtained by a split-ring resonator on the antenna ground. The proposed antenna is printed on FR4 substrate material with a dielectric constant of 4.4. The dimension of the proposed antenna is 24×16×0.8 mm 3 . Radiating patch has a combined geometry realized by a half-circular ring and half-square ring. To achieve a proper impedance matching and increased bandwidth with (Voltage standing wave ratio) VSWR ≤ 2, the study made use of an L-shaped element which was connected to the ground; moreover, the researchers added a split-ring resonator onto the ground to obtain one notched band. The comparison of the proposed antenna performance with previously presented UWB monopole antennas, was performed by using Analytic Hierarchy Process (AHP) method. A good agreement was observed between simulated and experimental results. .
Highlights
Ultra-wideband (UWB) technology has attracted increasing interest due to its potential applications in wireless communication systems
Bastani et al proposed using omnidirectional UWB monopole antenna with wireless local area network (WLAN) notched-band functionality. They showed that the use of the width and the position of the C-shaped slots in the ground plane makes it possible to obtain the optimized configuration of the slots, and reject WLAN band
This frequency band rejection occurs due to a splitring resonator which leads to the changes in the plane direction and creation of the notch on that frequency band
Summary
Ultra-wideband (UWB) technology has attracted increasing interest due to its potential applications in wireless communication systems. It was previously shown that IEEE 802.11a WLAN system causes some fault because of potential interference with other operation bands in UWB communication This problem can be modified by creating some slots such as E-shaped, C-shaped, arc shaped, and U-shaped slots on the radiation patch or ground plane which result in rejecting the band frequency [5]-[10]. Bastani et al proposed using omnidirectional UWB monopole antenna with WLAN notched-band functionality They showed that the use of the width and the position of the C-shaped slots in the ground plane makes it possible to obtain the optimized configuration of the slots, and reject WLAN band. Matin proposed using a new design and analysis for microstrip-fed ultra-wideband printed monopole antenna He showed that by the inclusion of U-shaped slot on to the patch, a frequency notched characteristic is achieved which can reject the frequency band of WLAN [3]. They showed that by using L shaped slots in the ground plane and U shaped slot in the patch, the WLAN band rejection is possible
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