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A hexagonal shaped Co-Planar Waveguide (CPW) fed antenna is proposed with Electric Field Coupled Resonator (ELC) structure for LTE application. The antenna consists of hexagonal slot in the patch with meta-material structure at the centre. Using ELC structure, the impedance matching is occurred efficiently. The frequency band covered by this proposed antenna is 2.6GHz with the return loss of-23dB. The total size of the antenna is. The dielectric constant used for this antenna is FR4 substrate. The optimal VSWR and Radiation pattern characteristics are obtained for this frequency band. The proposed antenna is designed and simulated using High Frequency Structure Simulator (HFSS).

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This paper proposes the concept of reactive power compensation with the aid of STATCOM (static synchronous compensators) and three phase multilevel inverter. The classification of multilevel inverters under three major types which are H-bridge inverter, flying capacitors-based inverter and diode clamped multilevel inverter. Among these multilevel inverters, the diode clamped type is stressed in this paper due to its capability to process 3-phase output in the absence of any input. Here the reactive power is compensated using 7-level based multilevel inverter with diode clamps are made utilizing the capacitors banks, diodes and switches which would therefore abates the voltage stresses and harmonics resulting in higher efficiency of the power system. Besides the functioning of multilevel inverter, STATCOM is also utilized to improve the regulation of reactive power flow and thereby, enhances the stability under transient condition of a power system. Subsequently, the compensated seven level output is procured by the sinusoidal PWM technique.