A Compact Design of UWB Monopole Antenna with Dual Notched Bands for WiMAX Applications
| Authors | Sakar Gupta1, Sanyog Rawat1, Sandeep Kumar2 |
| Affiliations |
1Department of Electronics and Communication Engineering, Manipal University Jaipur, India 2Department of Electronics and Communication Engineering, National Institute of Technology Karnataka, Surathkal, India |
| Е-mail | sanyog.rawat@jaipur.manipal.edu |
| Issue | Volume 14, Year 2022, Number 1 |
| Dates | Received 10 October 2021; revised manuscript received 21 February 2022; published online 28 February 2022 |
| Citation | Sakar Gupta, Sanyog Rawat, Sandeep Kumar, J. Nano- Electron. Phys. 14 No 1, 01006 (2022) |
| DOI | https://doi.org/10.21272/jnep.14(1).01006 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Worldwide interoperability for microwave access (WiMAX), Coplanar waveguide (CPW), Conformal CPW fed (CCF) antenna. |
| Annotation |
A compact conformal coplanar waveguide-fed (CCF) ultra-wideband (UWB) monopole antenna with dual notched bands at 3.25-3.85 GHz and 5.25-5.85 GHz for worldwide interoperability for microwave access (WiMAX) applications is presented in this paper. The evolution of the proposed antenna structure is presented in a stepwise manner with the incorporation of a parasitic element and a PIN diode. In the proposed structure, the bandwidth enhancement and band notch are realized by an asymmetric design, which has two I-shaped stub lines parallel to the feed line and two semicircles on both sides of the feed line. The notch is achieved by applying the parasitic element parallel to the patch and placing a PIN diode between the parasitic element and the antenna patch. The volumetric size of the antenna is 24×22×0.035 mm3. The proposed structure attains an operating band (VSWR ≤ 2) ranging from 3.1 to 10.6 GHz with a gain close to 3.95 dBi, along with significant efficiency and symmetrical radiation patterns. Parasitic elements are used to improve directivity or gain and reduce the back lobe. By choosing the parasitic elements, different resonant modes can be excited nearby each other, which can provide a wider bandwidth. The proposed antenna is low profile and is designed to be used as a transceiver in UWB communication for WiMAX applications. |
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