Experiments have been conducted on a dual electric grid thermionic device to investigate an alternative method of space charge mitigation in a thermionic energy convertor (TEC). Two electric grids, the attractor and deflector grids, provide opposing electric fields to overcome space charge while minimizing power losses to the attractor grid. Electron beams are formed in the electrode gap provid...

This paper displays a new access for determining the powerful firing signals for suppression of oscillations by using Optimized PI Based Interline Power Flow Controller [IPFC] through Nonlinear Control Design Block set. The IPFC performance is tested with Proportional Integral Gain [PI] controllers in comparison with Power Oscillation Damping controller [POD] on Modified Phllips-Heffron Model o...

A number of advances in the use of metamaterial-inspired constructs to improve the overall efficiency, directivity and bandwidth performance of electrically small antennas (ESAs) in the VHF, UHF and microwave regimes will be reviewed. Several metamaterial-inspired ESA designs have been fabricated and tested; these measurement results are in nice agreement with predictions. While initial efforts...

Simultaneous broadband absorption and polarization conversion are crucial in many practical applications, especially terahertz communications. Thus, actively tunable metamaterial systems can exploit the graphene-based nanomaterials derived from renewable resources because of flexible surface conductivity selective permeability at frequencies. In this paper, we propose a active bifunctional meta...

In this paper, Threshold Inverter Quantizer (TIQ) is a novel idea which can effectively replace the reference voltage generator, resistive/capacitive divider network and array of differential comparators in conventional flash Analog to Digital Converter (ADC) by an internal comparator constructed Complementary Metal Oxide Semiconductor (CMOS) inverters. The inverter threshold serving as voltage...

Generation of circularly polarized (CP) light with high purity and intensity was achieved using a single-, parallel, multi-layered luminescence-based CP convertor composed linearly luminescence (LPL) film quarter-wave plate.