When capacitively coupled plasma (CCP) is used to generate large-area plasma, the standing wave effect becomes significant, which results in the hindering of the uniform plasma process such as in a plasma etcher or plasma chemical vapor deposition. In this study, the transmission line modeling method is applied to calculate the voltage distribution over atmospheric-pressure CCP electrodes with ...

Wave pipelining offers a unique combination of high speed, low latency, and moderate power consumption. The construction of wave pipelines is benefited by the use of gates and buffers with data-independent delays and the knowledge of the interconnection delays. These two features are present in several SRAM-based field programmable gate arrays (FPGA’s): look-up tables (LUT’s) allow the designer...

The travelling wave dielectrophoretic pump studied here is essentially a rectangular straight micro-channel with an electrode array on part of its wall, and operated under an ac voltage with phase shift at neighbouring electrodes. The travelling wave dielectrophoretic force drives the cells, which drag the plasma, and after some sophisticated interaction between conventional dielectrophoresis, ...

We demonstrate in this work effective linearization on a millimeter-wave (mm-Wave) broadband monolithic gallium nitride (GaN) power amplifier (PA) using digital predistortion (DPD). The PA used is two-stage common-source (CS)/2-stack that operates the mm-Wave 5G FR2 band, and it linearized with generalized memory polynomial (GMP) DPD tested 4G (4th generation) long-term-evolution (LTE) 64-QAM (...

An advanced facility for the production of exotic shortlived isotopes far from stability (RIA) could use as the driver a high power cw superconducting linac [1]. Due to the wide range of particle velocities ( =0:019-0:81), different cavity types are required. This paper describes a possible design for the injector portion (up to =0:1) of the driver linac. The proposed injector design consists o...

The design and implementation of an interpolator using wave digital filters is presented. The interpolator increases the sample frequency with a factor of 4, from 800 kHz to 3.2 MHz. The design approach yields implementations with low power consumption and small chip area. The excellent stability and sensitivity properties of wave digital filters are retained.

In this paper, a compact microstrip rat-race coupler at 950 MHz operating frequency is designed, simulated, and fabricated. New branches are proposed in design using high-/low- impedance open-ended resonators. the conventional coupler, there three long λ/4 3λ/4 branch, they occupy very large area. presented for use instead of an ultra-compact branch suggested branch. Additionally, artificial ne...

Performance characteristics of a force sensor concept based on the morphology dependent resonance !MDR" shifts of micro-optical resonators have been investigated. Previous experimental studies have indicated that microsphere sensors with diameters ranging between 30 and 950 !m may have force resolutions reaching 10−5 N #T. Ioppolo et al., Appl. Opt. 47, 3009 !2008"$. In the present, we carry ou...

In this paper we demonstrate an optically powered ultrasonic t ransducer. It has a high efficiency and was designed and fabricated using MEMS (microelectromechanical system) techniques. It can generate narrowband ultrasound from broadband laser excitation. It is a simple two-mask-level MEMS device with a micro-disc seated on a micro-stem. As a laser pulse is incident on the disc centre, the dis...