Wide CPW-Fed Multiband Wearable Monopole Antenna with Extended Grounds for GSM/WLAN/WiMAX Applications
| Autor: | Danvir Mandal, Shyam S. Pattnaik |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Article Subject Coplanar waveguide Acoustics 020208 electrical & electronic engineering Impedance matching Specific absorption rate 020206 networking & telecommunications 02 engineering and technology lcsh:HE9713-9715 GSM 0202 electrical engineering electronic engineering information engineering lcsh:Cellular telephone services industry. Wireless telephone industry lcsh:Electrical engineering. Electronics. Nuclear engineering Electrical and Electronic Engineering Antenna (radio) Reflection coefficient lcsh:TK1-9971 Monopole antenna Electrical impedance |
| Zdroj: | International Journal of Antennas and Propagation, Vol 2019 (2019) |
| ISSN: | 1687-5877 1687-5869 |
| Popis: | A novel wide coplanar waveguide- (CPW-) fed multiband wearable monopole antenna is presented. The multiband operation is achieved by generating slanted monopoles of different lengths from an isosceles triangular patch. The different operating frequencies of the proposed antenna are associated with the lengths of the slanted monopoles, which are determined under quarter wavelength resonance condition. The CPW line is used as a multiband impedance-matching structure. The two grounds are slightly extended for better impedance matching. The proposed antenna is designed to cover the 1800 MHz GSM, 2.4 GHz/5.2 GHz WLAN, and 3.5 GHz WiMAX bands. The measured peak gains and impedance bandwidths are about 4.18/3.83/2.6/2.94 dBi and 410/260/170/520 MHz for the 1550-1960 MHz/2.3-2.56 GHz/3.4-3.57 GHz/5.0-5.52 GHz bands, respectively. The calculated averaged specific absorption rate (SAR) values at all the resonant frequencies are well below the standard limit of 2 W/kg, which ensures its feasibility for wearable applications. The antenna performance under different bending configurations is investigated and the results are presented. The reflection coefficient characteristics of the proposed antenna is also measured for different on-arm conditions and the results are compared. A good agreement between experimental and simulation results validates the proposed design approach. |
| Databáze: | OpenAIRE |
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