a new output structure for class e power amplifier (pa) is proposed in this paper. a series lc resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. this resonator causes low impedance at the second harmonic. the output circuit is designed to shape the switch voltage of the class e amplifier and lower the voltage stress of the transistor. t...

SLIDING-MODE control is a control technique used widely in electromechanical systems today [1–4]. It bases on using main characteristics of modern inverter semiconductor switches as Insulated Gate-Commutated Transistors (IGCTs) or Insulated-Gate Bipolar Transistors (IGBTs) that are operating in switch mode with distinctly higher switching frequency [5] than formerly used Gate-Turn-Off Thyristor...

This Article is brought to you for free and open access by the Electrical & Computer Engineering at ODU Digital Commons. It has been accepted for inclusion in Electrical & Computer Engineering Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Schoenbach, K. H.; Lakdawala, V. K.; Germer, R....

First we review the theory of active pulse compression systems using resonant delay lines. Then we describe the design of an electrically controlled semiconductor active switch. The switch comprises an active window and an overmoded waveguide three-port network. The active window is based on a four-inch silicon wafer which has 960 PIN diodes. These are spatially combined in an overmoded wavegui...

The problem of an influence cooling conditions power semiconductor devices on properties selected DC–DC converters is considered. new version electrothermal average model a diode-transistor switch for SPICE (Simulation Program with Integrated Circuit Emphasis) used in the investigations. This makes it possible to take into account thermal inertia as well mutual interactions between these device...

This report provides a summary of the Pulser In a Chip 9000-Discretionary LDRD. The program began in January of 1997 and concluded in September of 1997. The over-arching goal of this LDRD is to study whether laser diode triggered photoconductive semiconductor switches (PCSS) can be used to activate electro-optic devices such as Q-switches and Pockels cells and to study possible laser diode/ swi...

Fast high current and voltage switches are very important tools for pulsed power applications. They have for example applications in accelerator laboratories to drive fast injectionand extraction magnets, beam dumps and in quadrupole lenses. Basically, there are two complete different principles used to realise a high power switches. One is based on the use of semiconductors, where as the other...

Semiconductor Devices In article 2208698, Janio Venturini, Tom Nilges, and co-workers report on the first position- direction-flexible diode made solely from Ag18Cu3Te11Cl3. A temperature gradient of a few degrees around room is sufficient to switch between p- n-type conduction, controlling existence, position, current flow direction in device.

Elemental tellurium is a strongly spin-orbit coupled Peierls-distorted semiconductor whose band structure features topologically protected Weyl nodes. Using time-dependent density functional theory calculations, we show that impulsive optical excitation can be used to transiently control the amplitude of Peierls distortion, realizing mechanism switch between three states: semiconductor, metal a...