Design and Analysis of Planar Ultra-Wideband Antenna With Dual Band-Notched Function

Abstract

Abstract-A novel planar ultra-wideband (UWB) antenna with dual band-notched characteristics is proposed. The antenna is fabricated on a printed circuit board (PCB), having a circular monopole and arc-shaped parasitic strips on one side and a ground plane with a slot aperture on the other side. Two narrow bands at 5. GHz are notched by using two arc-shaped parasitic strips on the same layer of the radiator. Compared with other bandnotched UWB antennas, the proposed antenna exhibits the advantages of simple structure, compact size, simple control of each notched frequency band using separate parasitic strips, and good performance. Surface current distributions and equivalent circuit model are applied to analyze the operating principle of the proposed antenna. To validate the concept, a prototype is fabricated and tested. Both simulated and measured results confirm that the proposed antenna achieves a wide bandwidth from 3.1 GHz to 10.6 GHz with two narrow bands notched successfully. The results of VSWR, radiation patterns and gain response are shown and discussed in detail. The antenna enables the independent control of the notched frequency bands, and the proposed method can be extended for designing planar UWB antennas with multiple band-notched characteristics and reconfigurable notched frequency.

A New Method for Non-Line-of-Sight Vital Sign Monitoring Based on Developed Adaptive Line Enhancer Using Low Centre Frequency Uwb Radar

“…However, these two types of radar are difficult to be applied in the non-line-of-sight (NLOS) scenes due to the poor penetrability. To improve the penetrability of nonmetallic obstacle, ultra-wideband (UWB) radar has been employed to detect vital sign of the victims in the NLOS scenes [9][10][11][12][13][14][15][16]. In these scenes, it mainly focuses on whether the victim is alive [16][17][18][19][20][21][22][23], namely life detection.…”

Wideband Antenna With Reconfigurable Band Notched Using Ebg Structure

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Ultra wideband antenna for high data rate applications

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