Miniaturized Single-Layer Asymmetric CPW-Fed Antenna for UWB Applications
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The paper reports design of a miniaturized asymmetric coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna. Miniaturization in antenna is done by using the modification technique in radiator and ground plane of conventional CPW feed. As compared to a conventional rectangular CPW-fed antenna, the proposed UWB antenna has achieved 72.57% miniaturization in active area and 13.49% improvement in impedance bandwidth. The antenna achieves 126.53% measured impedance bandwidth from 2.7 to 12 GHz for magnitude of S11 < −10 dB and is the smallest single-layer antenna to the best of our knowledge which covers entire ultra-wideband. The proposed antenna is uniplanar with overall size of 18 × 16 × 1.6 mm3 (0.16 λl × 0.14 λl × 0.015 λl) and is discussed in terms of impedance bandwidth, radiation patterns, peak gains, phase response and group delay.
KeywordsAsymmetric CPW UWB Miniaturized Modified ground structure
The authors thank Dr. Deepak Bhatnagar from the University of Rajasthan, Jaipur, and Dr. K. Vaibhav Srivastava from IIT Kanpur, for their facilities.
- 1.Federal Communications Commission (2002) Revision of part 15 of the communication’s rules regarding ultra-wideband transmission systems, ET-Docket 98–153, FCC 02–48Google Scholar