L-C band pass impedance matching coupling circuit for high voltage PLC applications

2020 ◽  
Vol 117 ◽  
pp. 105639
Author(s):  
Hasan Mahamudul ◽  
Cagil Ozansoy
Keyword(s):  
High Voltage ◽  
Impedance Matching ◽  
Coupling Circuit ◽  
Band Pass

scholarly journals A Reconfigurable Radio-Frequency Converter IC in 0.18 µm CMOS

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1146
Author(s):  
Carlos Sánchez-Azqueta ◽  
Erick Guerrero ◽  
Cecilia Gimeno ◽  
Santiago Celma
Keyword(s):  
Wavelength Division Multiplexing ◽  
Frequency Synthesizer ◽  
Frequency Converter ◽  
Impedance Matching ◽  
Cmos Process ◽  
Wavelength Division ◽  
Triple Play ◽  
Band Pass ◽  
Reconfigurable Radio ◽  
Lc Tank

This work presents a reconfigurable RF converter for DVB-T television applications using triple-play over GPON. The system takes the DVB-T input, a wavelength division multiplexing (WDM) signal with spectral inversion in the range from 47 M Hz –1000 M Hz , up-converts its frequency to the band-pass of a highly selective surface-acoustic wave (SAW) filter centered at 1 . 3 G Hz , and then down-converts it so that it is compatible with the antenna input of conventional television sets. The designed RF converter incorporates two pairs of frequency synthesizer and mixer, based, respectively, on an integer-N phase-locked loop (PLL) with two LC-tank VCOs with 128 coarse tuning bands in the range from 1.35 G Hz –2.7 G Hz , and a double-balanced Gilbert cell, modified for better impedance matching and improved linearity. It is fed with regulated supplies compensated in temperature and programmed by an I 2 C interface operating on five 16-bit registers. This work presents the experimental characterization of the whole system plus selected cells for stand-alone testing, which have been fabricated in a 0 . 18 m CMOS process.

Impedance Matching Induce High Transmission and Flat Response Band-Pass Plasmonic Waveguides

Plasmonics ◽  
2011 ◽  
Vol 6 (2) ◽  
pp. 337-343 ◽  
Author(s):  
Yi Xu ◽  
Andrey E. Miroshnichenko ◽  
Sheng Lan ◽  
Qi Guo ◽  
Li-Jun Wu
Keyword(s):  
Impedance Matching ◽  
Plasmonic Waveguides ◽  
High Transmission ◽  
Band Pass

scholarly journals Design of active power filter for narrow-band power line communications

2018 ◽  
Vol 189 ◽  
pp. 04012
Author(s):  
Bingting Wang ◽  
Ziping Cao
Keyword(s):  
Reactive Power ◽  
Narrow Band ◽  
Impedance Matching ◽  
Active Power Filter ◽  
Power Line ◽  
Active Power ◽  
Current Harmonics ◽  
Power Filter ◽  
Minimum Number ◽  
Band Pass

In power line communication (PLC), couplers such as coupling transformers and band-pass matching coupling circuits are usually required for coupling, band-pass filtering, and impedance matching. However, the cost and size of transformers prevent them from being an economic and compact solution for PLC couplers. In addition, passive band-pass matching coupling circuits need accurate impedance matching and possibly incur power losses. In this paper, a 6th order multiple feedback (MFB) active power filter with the minimum number of components was designed for narrow-band PLC, which has high input impedance and low output impedance, allowing outstanding performance in main voltage isolation, suppressing the current-harmonics and compensating the reactive power simultaneously. Finally, simulations were conducted in the range of 95 kHz-125 kHz (CENELEC “B-band”), which confirmed that the new filter met the CENELEC requirements for transmission and disturbance levels.

New Approaches To the Design of Active Filters

SIMULATION ◽  
1966 ◽  
Vol 6 (5) ◽  
pp. 323-336 ◽  
Author(s):  
Peter D. Hansen
Keyword(s):  
High Performance ◽  
Impedance Matching ◽  
Analog Computer ◽  
Active Filters ◽  
Pass Band ◽  
Design Data ◽  
Low Pass ◽  
Band Pass ◽  
Low Pass Filters ◽  
High Pass

Operational amplifiers can greatly simplify the design of high performance signal filters because they elimi nate the need for inductors and for impedance matching. Furthermore, use of active filters can result in reduc tion of weight, size, and cost. Filters designed to satisfy sophisticated mathematical criteria can be realized without resort to "equalization" or trimming. In this issue we discuss the design of operational amplifier and analog computer circuits suitable for use as low pass filters. We also discuss the commonly used mathematically designed filters, i.e. Butterworth, Chebyshev, and Bessel. In addition, we present two new types of theoretical filters, the Paynter and the Aver aging filters. Design data necessary for realizing these theoretical filters with amplifier circuits is provided. In the next issue we shall discuss the design of band pass, band reject, high pass and all pass active filter circuits.

scholarly journals Power Line Communications for Automotive High Voltage Battery Systems: Channel Modeling and Coexistence Study with Battery Monitoring

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1851
Author(s):  
Thomas F. Landinger ◽  
Guenter Schwarzberger ◽  
Guenter Hofer ◽  
Matthias Rose ◽  
Andreas Jossen
Keyword(s):  
High Voltage ◽  
Electrochemical Impedance ◽  
Impedance Matching ◽  
Channel Modeling ◽  
Power Line ◽  
Small Scale ◽  
Cell Coupling ◽  
Power Line Communications ◽  
Transfer Characteristics ◽  
Single Carrier

As electric vehicles are gaining increasing worldwide interest, advances in driving range and safety become critical. Modern automotive battery management systems (BMS) compete with challenging performance and safety requirements and need to monitor a large amount of battery parameters. In this paper, we propose power line communications (PLC) for high voltage (HV) traction batteries to reduce the BMS wiring effort. By modeling a small-scale battery pack for frequencies up to 300 MHz, we predict the PLC channel transfer characteristics and validate the results using a PLC hardware demonstrator employing a narrowband single-carrier modulation. The results demonstrate that battery PLC is a demanding task due to low access impedances and cell coupling effects, yet transfer characteristics can be improved by optimal impedance matching. PLC for HV BMS not only saves weight and cost, but also improves flexibility in BMS design. PLC enables single-cell monitoring techniques such as online electrochemical impedance spectroscopy (EIS) without additional wiring. Online EIS can be used for in-situ state and temperature estimation saving extra sensors. This work unveils possible coexistence issues between PLC and battery monitoring. In particular, we demonstrate that certain PLC data or packet rates have to be avoided not to interfere with EIS measurements.

Design and Evaluation of Band-Pass Matching Coupler for Narrow-Band DC Power Line Communications

2019 ◽  
Vol 28 (07) ◽  
pp. 1950119 ◽  
Author(s):  
Bingting Wang ◽  
Ziping Cao ◽  
Zhen Luan ◽  
Bo Zhou
Keyword(s):  
Low Cost ◽  
Impedance Matching ◽  
Power Line ◽  
Distributed Parameter ◽  
Experimental Procedure ◽  
Power Line Communications ◽  
Average Value ◽  
Dc Power ◽  
Band Pass ◽  
The Cost

In power line communication (PLC), coupling transformers are usually required for coupling, band-pass filtering and impedance matching. However, coupling transformer design involves so many parameters that it is typically an imprecise and experimental procedure. In addition, the cost and size of transformers prevent them from being an economic and compact solution for PLC couplers. This paper first analyzes a simplified, distributed parameter model of the power line, which can be used to calculate power line impedance easily and accurately. Next, a low-cost, band-pass matching coupler with compact architecture is designed to replace the coupling transformer for direct current PLC (DC-PLC), which ensures impedance matching on the basis of an accurate power line impedance instead of using an average value. Finally, simulations as well as laboratory tests are conducted under 95–125[Formula: see text]kHz (CENELEC B-band), which confirm the new coupler’s excellent band-pass filtering and impedance matching performance.

High Voltage Electron Microscopy of Ion-Milled Dental Enamel

1974 ◽  
Vol 32 ◽  
pp. 60-61
Author(s):  
L. D. Ackerman ◽  
S. H. Y. Wei
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Third Molar ◽  
Polarized Light ◽  
Dental Enamel ◽  
Longitudinal Section ◽  
Ion Milling ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron

Mature human dental enamel has presented investigators with several difficulties in ultramicrotomy of specimens for electron microscopy due to its high degree of mineralization. This study explores the possibility of combining ion-milling and high voltage electron microscopy as a means of circumventing the problems of ultramicrotomy.A longitudinal section of an extracted human third molar was ground to a thickness of about 30 um and polarized light micrographs were taken. The specimen was attached to a single hole grid and thinned by argon-ion bombardment at 15° incidence while rotating at 15 rpm. The beam current in each of two guns was 50 μA with an accelerating voltage of 4 kV. A 20 nm carbon coating was evaporated onto the specimen to prevent an electron charge from building up during electron microscopy.

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