BAND-NOTCHED UWB ANTENNA WITH RAISED COSINE-TAPERED GROUND PLANE

作者：Malik Jagannath; Kartikeyan Machavaram V^*

来源：Microwave and Optical Technology Letters, 2014, 56(11): 2576-2579.

DOI：10.1002/mop.28648

• ultrawideband
• raised-cosine taper
• system fidelity factor

An ultrawideband (UWB) antenna with band-notched characteristic is presented. The novelty of the antenna is the tapered ground plane which enhances mode coupling to achieve wide impedance bandwidth. Proposed microstrip-fed antenna consists of a circular patch with an etched slot for band-notched property to reduce the effect caused by the frequency interference with already existing narrow band WLAN system. The antenna has a simple structure with overall dimension being (30 x 30 x 1.524) mm(3) on FR-4 substrate. With an extended operating band covering the target UWB spectrum (3.1-10.6 GHz), fairly good and consistent monopole like omnidirectional radiation patterns in H-plane and linear transmission responses, the proposed antenna is well suited to be integrated within portable devices. The antenna is successfully fabricated and measured, showing broadband-matched impedance and good time domain performance throughout the operating bandwidth.

• 出版日期2014-11