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Impedance Measurement of Small Antennas Over a Ground Plane Without Direct Cable Attachment
Antenna impedance measurement small antennas
2014/12/8
An indirect impedance measurement approach that does not require direct cable attachment or large space using a two-port network is presented. Using a straight wire monopole as an interrogating antenn...
Direct discrete-time control of port controlled Hamiltonian systems
Hamiltonian systems under-actuated systems passivity based control
2010/10/12
The direct discrete time control of Port Controlled Hamiltonian Systems (PCHS) in the sense of energy shaping and damping injection is considered. In order to give a direct discrete time design method...
Turkish Journal of Electrical Engineering & Computer Sciences A Variable Gain PI Controller Used for Speed Control of a Direct Torque Neuro Fuzzy Controlled Induction Machine Drive
Induction motor, direct torque control (DTC) direct torque neuro fuzzy control (DTNFC) adaptive NF inference system (ANFIS)
2009/7/28
This paper presents an original variable gain PI (VGPI) controller for speed control of a direct torque neuro fuzzy controlled (DTNFC) induction motor drive. First, a VGPI speed controller is designed...
Nano-aquarium Fabrication by Femtosecond Laser Direct Writing for Microscopic Observation of Aquatic Microorganisms
Nano-aquarium Femtosecond laser Photostructurable glass
2009/6/1
We demonstrate the fabrication of three-dimensional (3-D) hollow microstructures embedded in photostructurable glass by a femtosecond (fs) laser direct writing. Fs laser direct writing followed by ann...
ABB to Upgrade Control and Valve Cooling System for High Voltage Direct Current Station
cooling systems
2007/2/2
30 Jan 2007，ABB announced that it has recently been selected by the Public Service Company of New Mexico to upgrade the control and the valve cooling systems of their existing ABB high voltage direct ...
Improved Method of Image Suppression for Integrated Direct Down Conversion Receivers
Improved Method Image Suppression Conversion Receivers
2010/7/15
In this work, an improved method of obtaining high image suppressions in receivers using integrated direct down converters is presented. The considerations are based on a receiver structure that is de...
Direct Growth of High-Quality InP Layers on GaAs Substrates by MOCVD
Metamorphic buffer layer LP-MOCVD HEMT
2010/12/7
In this report, we have overcome the drawback of surface roughness of metamorphic buffer layer by LP-MOCVD technique and have grown InP metamorphic buffer layers with various thickness on misoriented ...
Direct Chip Mounting — A Challenge to the Design Engineer
Direct Chip Mounting the Design Engineer
2010/12/27
In this paper alternatives to printed circuit board technology with insulated wiring (multilayers), and the mounting of chips from film carriers, are evaluated. These principles have a good possibilit...