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Representation of an accurate equivalent circuit model of sensor coil is an important issue, an operational frequency being higher. Generally, the coil is represented by an inductance element connected with a resistance in series and a capacitance in parallel. In use of multi-layered coils at medium wave frequencies, it is however considered that the correction of the model should be needed to make...
All batteries suffer from irreversible electrochemical changes as a result of their continuous operation. Deep depths of discharge and/or high discharge currents will inherently result in a reduction of performance over time. To track a battery lifetime, or state of health (SoH) requires an extension from the common internal resistance model and must be regularly assessed. To track SoH, an intelligent...
For safety reasons, design specifications of automotive electronics, as compared to consumer electronics, are more stringent and complex. With increasing demand for high-end graphical displays in commercial vehicles, good power distribution network (PDN) design is critical to ensure the reliable operation of the circuits. This paper describes a systematic PDN design method of a high-speed printed...
To obtain the Micro-arc oxidation (MAO) process load characteristics, realize the online measurement, Micro-arc oxidation load characteristics online measurement system is designed by frequency response technology in this paper. Sine wave voltage excitation whose mode is frequency sweeping, series operation with micro-arc oxidation DC source. The amplitude and phase angle frequency response characteristics...
A complete high frequency small signal equivalent circuit model of 10Gb/s TOSA package of Electroabsorption Modulator integrated Laser(EML) is presented. The model includes submount, bonding wires, flexible printed circuit(FPC), and EML chip. The values of each component parameters are extracted by the method of curve fitting. A good agreement between measured and simulated results confirms the accuracy...
Article 690.11 in the 2011 National Electrical Code® (NEC®) requires new photovoltaic (PV) systems on or penetrating a building to include a listed arc fault protection device. Currently there is little experimental or empirical research into the behavior of the arcing frequencies through PV components despite the potential for modules and other PV components to filter or attenuate arcing signatures...
Antenna radiation efficiency is one of the most important antenna parameters. A number of measurement methods have been developed for characterising this parameter over the years, and Wheeler Cap method seems to be the dominant one, which is generally suitable for narrowband small antenna measurements. For wideband antennas, how to measure the antenna radiation efficiency accurately is still a challenging...
This paper presents a methodology for determining the series resistance of (through-wafer interconnect) Vias directly from measured S-Parameters using an ultra-low impedance measurement known as the “S21-Shunt” technique. Data is acquired following on-wafer SOLT calibration using standard VNA / PNA hardware by characterizing “series-shunt” configured test structures. Measurement errors attributable...
We discuss the relevance of the distribution of the base resistance of planar bipolar transistors with respect to noise-and small-signal characteristics. We present analytical results for admittance parameters in terms of elements of the small-signal equivalent circuit of the Mextram compact model and discuss extraction of base resistance distribution parameters from measured admittance parameters...
Energy storage system is becoming more and more important in power electronics device. The Ultracapacitor or so-called electrochemical capacitor is one of the most popular choices for the energy storage system because of its distinct characters. In the application UCAP's transient behavior need to be studied for design purpose. Usually these transient characters are not shown in the product data sheet...
Impedance of adhesive joints has been measured in frequency range 20 Hz - 1 MHz using LCR meter HP 4284A. The joints have been created by adhesive assembly of jumpers on test PCBs. It has been found that the joint impedance increases at the frequency higher than 100 kHz. It has been found that the measured frequency characteristics are in correlation with frequency characteristic of an equivalent...
In order to research the characteristic of HID with Medium-High Frequency, it is necessary to make a model for HID to describe the behaviors. Our works focus on the followings: 1) a few of external electrical properties of HID lamps have been measured to represent the V-I characteristic and output power vs. equivalent resistance as well as external voltage vs. equivalent resistance; 2) based on the...
This paper presents a wideband circuit model of silicon-based interconnects for predicting their metallic and silicon substrate losses at higher frequencies. The skin and proximity effects in the structure are characterized using the partial element equivalent circuit (PEEC) method, and the parasitic parameters in silicon substrate are captured according to some analytical equations. Good agreements...
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
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