Miniaturized CPW-FED UWB antenna with dual frequency rejection bands using stepped impedance stub and arc-shaped parasitic element

作者：Li, Yingsong^*; Li, Wenxing; Mittra, Raj

来源：Microwave and Optical Technology Letters, 2014, 56(4): 783-787.

DOI：10.1002/mop.28228

• stepped impedance stub
• ultra-wideband antenna
• dual band-notch antenna
• CPW-feed structure
• parasitic element

In this article, we propose the design of a coplanar waveguide (CPW)-fed circular slot antenna, with dual frequency rejection characteristics for ultra-wideband communication applications. The dual frequency rejection function is realized by inserting a stepped impedance stub (SIS) inside the circular ring radiation patch and by using an arc-shaped parasitic element (ASPE) along the circular ring radiation patch. The center frequencies of these rejection bands can be controlled by adjusting the dimensions of the SIS and the ASPE. The antenna has been designed, optimized, and fabricated, and its performance has been verified through measurements, which show that it can operate across a wide bandwidth ranging from 2.7 to 11.6 GHz with a VSWR < 2, and that it provides dual-band rejection characteristics at both the WLAN band and the X-band.

• 出版日期2014-4
• 单位哈尔滨工程大学