A personal communications service/wide-band code division multiple access (PCS/W-CDMA) dual-band monolithic microwave integrated circuit (MMIC) power amplifier with a single-chip MMIC and a single-path output matching network is demonstrated by adopting a newly proposed on-chip linearizer. The linearizer is composed of the base–emitter diode of an active bias transistor and a capacitor to provi...

In this paper, we present a high accuracy laser range finder and velocimeter using ultra-fast time-to-digital converter (TDC). The system operation is based on the measuring the round-trip time of a narrow laser pulse. A low-dark current high-speed PIN photodiode is used to detect the triggered laser beam and to produce start signal. The pulsed laser diode generates 45W optical power at 30ns du...

We calculate the efficiency with which magnetic tunnel junctions can be used as resonant detectors of incident microwave radiation via the spin-torque diode effect. The expression we derive is in good agreement with the sensitivities we measure for MgO-based magnetic tunnel junctions with an extended unpatterned magnetic pinned layer. However, the measured sensitivities are reduced below our es...

MIRZAEE TESHNIZI, HESAMEDDIN. Medium-Voltage DC Power Conversion and Distribution for Efficient Electric Power Delivery in Shipboard and Mobile Mining Application. (Under the direction of Dr. Subhashish Bhattacharya). Medium-Voltage DC (MVDC) distribution and power conversion systems have become more attractive in recent years due to advances in power electronic technology. It can be used in a ...

We report lasing and amplification in a rod type thulium-doped photonic crystal fiber with 80 μm core diameter. The rod is pumped with a 793 nm laser diode and produces more than 20 W output power at a beam quality M(2)<1.3. The laser/amplifier has a slope efficiency of 27.8%/20.1% relative to absorbed pump power with a lasing threshold at 28.6 W. The output wavelength in the lasing configurati...

We report on the development of an efficient and simple picosecond diode-pumped solid-state laser source with a versatile repetition rate (typically 1 Hz-1 MHz) for material processing applications. The laser source is based on a 4 MHz repetition rate mode-locked oscillator and a passive 3D multipass amplifier both based on Nd:YVO(4) crystals. Micromachining experiments were performed to study ...

Kosta et al.first ever reported the development of biologic electronic components viz resistance R, capacitance C, diode D and transistor T using human tissues and human skin. In our early study, we have demonstrated the feasibility of liquid medium (synthetic blood plasma) to develop bio-transistor, bio-resistor, and bio-capacitor and combined them to form an amplifier using the metallic harne...

flop, a diode logic unit with current-steering amplifier, a passive delay line, and an active variable delay circuit, all of which are designed to operate with terminated 75-ohm transmission lines. Ten-nanosecond pulses and 20-nanosecond flip-flop transition times are achieved through use of very-high-speed MADT transistors. The circuits have been successfully employed in the FX-l, a small gene...