Abstract: A novel multiband planar inverted-F antenna with meander line and slots applied on the radiating patch has been introduced. The proposed structure consist of rectangular meander line on radiating patch which reduce the size and improve the characteristics of antenna as compared to conventional PIFA. The antenna has been designed on FR4 substrate which is cheap and easily available with ground plane dimension of 70x40x1.5676 mm3 and radiating meandered patch has dimension 40x20 with height 4 mm above the substrate. . The antenna is covering mobile WiMAX (2.7161-2.8640 GHz) band, broadband wireless application or fixed/mobile application (3.7499-3.8470 GHz) band and x-band (8-12 GHz), is suitable for weather radar, and some communications satellites.

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-02-43
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Abstract: This Paper aims to extend the knowledge about the performance of different cascaded multilevel inverter through harmonic analysis. Large electric drives and utility require advanced power electronics converter to meet high power demands. As a result, multilevel power converter structure has been introduced as an alternative in high power and medium voltage situations. A multilevel converter not only achieves high power ratings but also improves the performance of the whole system in terms of harmonics, dv/dt stresses and stresses in the bearing of the motor. Despite of various advantages seen in multilevel inverter the total harmonic distortion has always been a matter of concern. In the presented work a neural network based model is proposed for reducing the total harmonics distortion from multilevel inverter output. For this neural network is trained to perform selective harmonic elimination. The training data is obtained by solving non-linear equation obtained from selective harmoni

• Publication Date: 25-May-2014
• DOI: 10.15224/978-1-63248-028-6-02-44
• Views: 0
• Downloads: 0