nvestigations on the optimization of feed structures for exciting the slotted line antenna for high-density plasma production are presented. Each feed structure used (except the direct feed) excites a preferred component ...

Two major factors of the long-term field degradation of flat-plate photovoltaic (PV) modules are investigated: the increased lumped series resistance and the decreased short circuit. The increment in the lumped series ...

A microprocessor-based solar tracking controller was designed and fabricated. In addition to tracking, the controller is capable of acquiring photovoltaic and meteorological data from a photovoltaic system and controlling ...

A thin dielectric slab over a conducting sheet is presented as a low-loss slow-wave guiding system. When one introduces a magnetic wiggler into the system one may efficiently excite millimeter waves by passing a sheet ...

A model for a step-index fiber in the form of an equivalent slab guiding structure is presented. This model simplifies the analysis of fiber directional couplers and coupler half-blocks with dielectric and metallic ...

The introduction of a plasma and a strong guide magnetic field in a free electron laser (FEL) slows down the phase velocity of radiation, significantly reducing the requirements on beam energy for generating frequencies ...

The dispersion characteristics of a helix-loaded traveling-wave tube (TWT) when a dielectric or plasma is introduced into the system are discussed. The dispersive properties of the dielectric-supported helix waveguide are ...

Coupling characteristics of directional couplers consisting of two dual-mode highly elliptical-core fibers have been studied in detail using a first-order perturbation approach, and two different designs of a mode filter ...

A matrix method that is applicable to an arbitrary potential variation represented by a set of linear functions such as multiple quantum well structures in the presence of a static electric field is described. An analytical ...

A partially dielectric-loaded waveguide supports modes with phase velocity νph>c/∈1/2, where ∈ is the dielectric constant of the lining. The coupling of a fast mode (with νph>c) with a slow mode (with c /∈1/2<νph<c) via a ...