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Voltage-controlled tricolor novel solid state LED has been presented in this paper. The monolithic structure of indium gallium nitride (InGaN)-based double Quantum Well (DQW) light-emitting diode (LED) has been designed and simulated with SILVACO Technology Computer Aided Design (TCAD). Each quantum well and decoupling region is carefully designed to control illumination colors with applied potentials...
In antenna design, it is important to optimize the amplitude weights of a linear antenna array to achieve low peak sidelobe level (PSLL). This paper deals with a linear inequality constraint on array factor to get maximum response in look direction and reduced sidelobe levels in a specified stop band region. Linear regular array as well as thinned linear array is optimized using a constrained genetic...
Transistor oscillators with planar micro strip resonators as frequency determining elements are widely used as stable sources for microwave systems because of their easier implementation, smaller size and lower cost. In this paper, two negative resistance oscillators are discussed using different micro strip resonators. First oscillator is designed using λg/2 resonator. Oscillator has measured output...
Voltage-controlled tricolor monolithic (single) solid state LED has been presented in this paper. This work will be used for light emissions of different colors controlled with the step changes of supplied potentials. The monolithic structure of Indium Gallium Nitride (InGaN)-based double Quantum Well (DQW) light-emitting diode (LED) has been designed and simulated with SILVACO Technology Computer...
Beamformer is an indispensible part of any phased array system. Analog beamformer is the simpler method where the individual signals received from array of antennas are co-phased and summed to maximize the signal reception. The co-phasing is achieved through data independent weights which are predefined as per direction of arrival. These weights are applied to the analog phase shifter IC, which produces...
This paper presents a critical augmentation to the previously developed Constraint Adaptive Natural Gradient Algorithm (CANA), by incorporating a non adaptive metric in place of adaptive Riemannian metric. Inclusion of this fixed metric significantly reduces the complexity of previously developed technique. Complemented with Constrained optimization techniques the algorithm is capable of rapidly adjusting...
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