Amit kumar baghel

• Phd
• PostDoc Position at INSTITUTE DE TELCOMMUNICATION PORTUGAL

In this paper a thorough analysis of the impact of Electric (EVs) and Hybrid Electric Vehicles (HEVs), both in current scenario and that in long term with time-line year as 2030 is done. By comparing the Co2 emissions of different vehicles in today's scenario and by 2030, it can said that EVs and HEVs will be very much suitable for future transport...

A parabolic profile pyramidal horn antenna with flaring in both the E- and H-plane is presented in this study. The proposed structure having aperture dimensions of 518.10 × 408.36 mm2 is designed and fabricated for S-band (2.2–3.3 GHz). Due to increase in the flaring by 3.35° in the E-plane and 3.18° in the H- plane compared to the optimal typical...

A graded refractive index metamaterial (MM) exhibits a magnetic dipole designed and demonstrated experimentally for 2.45 GHz operating frequency. The system efficiency of the far-field wireless power transfer technique increased to 32.6% with MM. With 16° reduction in half power beamwidths, 9.78 dBm is received at 1 m with 30 dBm input when MM is p...

This paper presents an aperture matched parabolic pyramid horn antenna (APPHA) having flaring in the E‐ and H‐ plane. The proposed structure is designed and manufactured for S‐band (2.2–3.3 GHz) with a semicircular aperture matched section in both planes. The APPHA gives half power beam width (HPBW) less than 17° and 15° in the E‐ and H‐ planes, re...

The presentation is about the use of metamaterial in space solar power projects.

A parabolic dish reflector (PDR) is designed and fabricated to convert the plane wave to spherical wave at the focus. The performance of PDR made from aluminum and Polydimethylsiloxane (PDMS) coated with aluminum is carried out. It is observed that the performance of the PDR made from PDMS is same as that made from aluminum, thus the proposed PDR m...

This article shows the frequency tuning using PIN diode of transmission type digital metasurface. Here, the S21 amplitude of the unit cell in ON and OFF condition of PIN diode is given the digital code of “0” when the S21 value is less than - 8 dB, and “1” when the amplitude is 0 dB. It is observed that when the diode is ON, the 10 x 18 array shows...

A square slotted patch antenna for far-field wireless power transfer applications is presented. The antenna has compact size equal to 0.416�0.236�0.013� which can be fit into most of the devices. It exhibits a total of 780 MHz of -10 dB impedance bandwidth in S-band with good directional characteristics. A maximum of 1.24 dB gain is observed with 1...

In this paper, the efficient modeling of DC-RF module of space solar power satellite (SSPS) with improved antenna design and metasurface is proposed. With the higher losses as one of the present problem in the DC-RF conversion, using single-phase full-bridge topology with a maximum power point tracking algorithm is proposed. The design parameters o...

This invention is about designing an aperture matched parabolic pyramidal horn antenna (APPHA) to achieve the higher values of gain, half power beam width, and front-to-back ratio than typical pyramidal horn antenna with equal aperture area. The parabolic tapering concentrates radiating field in the propagating direction to great extent to have hig...

This invention is about transferring/harvesting the power/energy to/at the receiver end by using metamaterials for manned/unmanned applications. The WPT/WEH techniques used nowadays are having less efficiency and small distance coverage. Furthermore, its performance degrades as the transmitting antennasradiated electromagnetic waves that carries po...

A parabolic profile pyramidal horn antenna with flaring in both the E- and H-plane is presented in this study. The proposed structure having aperture dimensions of 518.10 × 408.36 mm2 is designed and fabricated for S-band (2.2–3.3 GHz). Due to increase in the flaring by 3.35° in the E-plane and 3.18° 3.18° in the H- plane compared to the optimal ty...

A novel ultrathin linear to cross-polarization transmission metasurface (MS) converter with a periodicity of 8 mm ( $\lambda_0$ /4.26, where $\lambda_0$ is free space wavelength at 8.8 GHz) is proposed which gives perfect transmission. The proposed MS is a single layer with a thickness of 0.8 mm (0.0235 $\lambda_0$ ). The conversion efficiency...

In this letter, the far-field wireless power transfer up to 6-m distance from the transmitting horn antenna (Tx) aperture using a new design gradient refractive index lens metamaterial (GRIN MM) is proposed for the first time, which increases the efficiency of power transfer. Double-sided-S-shaped GRIN MM unit cell dimensions are optimized for the...

The proposed metasurface design help to increase the radiation efficiency at 2.9 GHz by reducing the side and back lobes by making the phase difference of the waves emerging from the phase center of the horn antenna same after passing through metasurface array. The unit cell of the meta surface is having concentric ring structure made of copper on...

This invention is about designing a parabolic pyramidal horn antenna (PPHA) in such a way that it achieves higher values of gain than typical pyramidal horn antenna with equal aperture area. The parabolic tapering concentrates radiating field in the propagating direction in great extent so as to have higher aperture efficiency with pencil beam radi...