This paper proposes a filtering matching network optimization design method using the fragment-type structure for continuous inverse class-F (CCF-1) power amplifier (PA). Different from conventional microstrip structure, is used to increase flexibility of sharp roll-off at second harmonic band. By multi-objective evolutionary algorithm, output (OMN) with fast transition between passband and sto...

Evanescent mode substrate integrated waveguide (SIW) is one of the promising technologies for design of light-weight low-cost microwave components. Traditional realization methods used in the standard evanescent waveguide technology are often not directly applicable to SIW due to dielectric filling and small height of the waveguide. In this work, one of the realization methods of evanescent mod...

SUMMARY Front-end modules in current cochlear implant devices make use of parallel banks of independent bandpass filters. Compared to the earlier front-end modules implementing formant extraction, filter banks dissipate less power and have superior performance. To further improve the performance of such front-end modules, we propose a front-end module, which consists of a cascade of adaptive se...

Saturated and tunable emission colors make colloidal quantum-dot light-emitting diodes (QD-LEDs) interesting for the next generation of display and lighting technologies. However, there still remain various hurdles to the commercialization of QD-LEDs, including their relatively low external quantum efficiencies (EQE). In this thesis, we study the efficiency loss mechanisms present in the latest...

The impact of interface/border defect on performance and reliability was investigated for gate-first and gate-last high-k/metal-gate CMOSFET. For high-k/metal-gate CMOSFET, VFB roll-off is critical as effective oxide thickness (EOT) scales below 15 angstrom (Å) especially for metal gate-first device with an extra capping layer to adjust VTH. By proposing a model of metal-gate process induced in...

Progress of light emission efficiency in the green and deep green spectral range is crucial for the success of all solid state lighting. Yet, power performance in GaInN/GaN quantum well light emitting diodes (LEDs) in the green still lag far behind the development of red and blue. A key signature is a steep roll-off in emission power when the wavelength is increased from 460 nm in the blue to 5...