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AD6630 数据手册DataSheet 下载
AD6630 数据手册DataSheet 下载

... lead or lag in the current vs. voltage. This may not preserve maximum power transfer, but maximum voltage swing will exist. All that is required to make the SAW filter input or output look real is a single inductor shunted across the input. When the correct value is used, the impedance of the SAW fi ...
DC/AC Fundamentals: A Systems Approach
DC/AC Fundamentals: A Systems Approach

... A band-pass filter allows frequencies between two critical frequencies and rejects all others. •A band-stop filter rejects frequencies between two critical frequencies and passes all others. •Band-pass and band-stop filters can be made from both series and parallel resonant circuits. •The bandwidth ...
Design of a Noninvasive Bladder Urinary Volume Monitoring System
Design of a Noninvasive Bladder Urinary Volume Monitoring System

... Usually, the impedance characteristics of biological tissue can be represented by the three components equivalent model [10], shown in Figure 1. Ri, Re, Cm represent the equivalent biological tissue inner and outer resistance and membrane capacitance. Biological tissue shows different impedance char ...
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY
ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

student`s book - Macmillan Education South Africa
student`s book - Macmillan Education South Africa

... Topic 1: Alternating current theory .........................................................1 Module 1: RC circuits ...................................................................................................... 2 Unit 1.1: RC series circuits.................................................. ...
Differential Impedance Measurement with Time Domain Reflectometry
Differential Impedance Measurement with Time Domain Reflectometry

... they represent a simple coplanar transmission line. The impedance of this transmission line depends on the line parameters of the capacitance and loop inductance per length. What will happen to the impedance a signal sees if the coplanar pair passes over a floating metal plane? To explore this scena ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

... Figure 1: Single-stage amp lifier To increase the swing of cascade structure, folded cascode structure has been proposed [5]. In this method, by eliminating the transistor of cascode sequence, the number of cascode transistors in the output is reduced and thus swing increases by the effective voltag ...
Harmonic Filtering
Harmonic Filtering

... greater than the DC bus voltage. As highlighted in figure 4, this only occurs for a very short period of time for each phase. Hence, to transfer the energy required by the motor in such a short period of time, the peak current must be high. The input current, shown in figure 4, is non-sinusoidal and ...
Experiment 2 - Rensselaer Polytechnic Institute
Experiment 2 - Rensselaer Polytechnic Institute

... the concepts of transfer functions and filters. Background Transfer Functions: We know that a circuit with only resistors will behave the same at any frequency. A voltage divider with two 1K resistors divides a voltage in half at 10 Hertz as well as it does at 100K hertz. We also know that circuits ...
Figure 1: System consisting of two Chua`s circuits coupled
Figure 1: System consisting of two Chua`s circuits coupled

... Chua's circuit is one of the most popular nonlinear dynamical system used to investigate the dynamic behavior in all possible states: Periodic, quasi-periodic and chaotic. It is very simple electronic circuit capable to exhibit a rich dynamical behavior. It was introduced in 1987 by Leon O. Chua (Ch ...
Protection of Complex Transmission lines – parallel feeders, muti
Protection of Complex Transmission lines – parallel feeders, muti

... voltage level and load angle at the same time as being inversely proportional to system impedance If the required level of transmitted power cannot be met, either from system stability requirement or load requirement than series compensated line are used in transmission network to compensate for the ...
LTC1563-2/LTC1563-3 - Active RC, 4th Order Lowpass Filter Family
LTC1563-2/LTC1563-3 - Active RC, 4th Order Lowpass Filter Family

... Note 1: Absolute Maximum Ratings are those value beyond which the life of a device may be impaired. Note 2: The minimum cutoff frequency of the LTC1563 is arbitrarily listed as 256Hz. The limit is arrived at by setting the maximum resistor value limit at 10MΩ. The LTC1563 can be used with even large ...
abcd hybrid matrix scattering
abcd hybrid matrix scattering

... to the kirchhoff voltage and current laws and impedance concepts of circuit theory. But these techniques can not be directly applied to microwave circuits.. => Because the solution to Maxwell’ s equation for a given problem is complete, it gives the electric and magnetic fields at all points in spa ...
Low Inductance Capacitor Array
Low Inductance Capacitor Array

... Where dt is the fastest rise time of a transient current. For example suppose there is a 20 amp current transient with a rise time of 1nSec, and the PDS must remain within 5% of a 1.8V power supply. The amount of inductance allowed is estimated to be: L=1.8V*0.05*(1nSec/20A)=4.5pH [11] Given this i ...
Magnetic Induction Sensor for the Respiration Monitoring
Magnetic Induction Sensor for the Respiration Monitoring

... The magnetic induction monitoring is a non-contact monitoring technique, which meets most of the requirements described above. Common techniques for magnetic eddy current induction measurements are based on a multiple coil method [1], [2]. Our main target was testing of magnetic induction monitoring ...
AD8553 数据手册DataSheet 下载
AD8553 数据手册DataSheet 下载

... helps reduce system costs over conventional instrumentation ...
Design Practices for Using a LONWORKS® Free Topology Channel
Design Practices for Using a LONWORKS® Free Topology Channel

... Train applications cannot use PCB spark gaps due to the need for conformal coating or potted PCBs. In figure 3, the spark gaps have been replaced with encapsulated discharge devices Z1 and Z2 which are connected to chassis ground. Each of these devices has a discharge value of approximately 300 volt ...
Aalborg Universitet
Aalborg Universitet

... branch along with the LCL filter can be used to achieve the desired filtering performance (both at the low and the high frequency components) with small values of the filter components. The use of such a filter for single VSC is presented in [31]. However, the high frequency attenuation is compromis ...
Line filter design of parallel interleaved VSCs for high power
Line filter design of parallel interleaved VSCs for high power

... branch along with the LCL filter can be used to achieve the desired filtering performance (both at the low and the high frequency components) with small values of the filter components. The use of such a filter for single VSC is presented in [31]. However, the high frequency attenuation is compromis ...
tuning application guide for andrea.cdr
tuning application guide for andrea.cdr

... requirement, the direct-coupled TEM mode coaxial configuration is usually chosen. A long-travel tuning post is selected that will cover the desired range. The circuit is then designed around the tunable posts so that each section approximates 76 ohms of optimum resonator Q and best selectivity. Figu ...
Input Impedance Measurement Using ADC FFT
Input Impedance Measurement Using ADC FFT

... the parasitic capacitance and resistance values associated with the PCB. As a result of the reactive ADC components, measuring the input impedance of the ADC requires both magnitude and phase information. Such measurements may also require multiple instruments and probes that may introduce additiona ...
Corcom EMI/RFI Filter Product Overview
Corcom EMI/RFI Filter Product Overview

... susceptibility, as well as compliance with international emissions standards. Corcom filters are available in a wide range of single and 3-phase designs as well as IEC inlet and power entry modules which can combine several functions to reduce cost, space and labor. Solutions are also available for ...
Impedance Analysis of Silicon Nanowire Lithium Ion Battery Anodes
Impedance Analysis of Silicon Nanowire Lithium Ion Battery Anodes

... decomposition product (of LiPF6) rather than an electrochemical one. The SEI layers at 0.4 V in the dealloying (discharge) have again LiF and Li2CO3 as major components. At the full discharge to 2 V, the SEI was found to be composed predominately of Li2CO3, with other major species being LiF and LiP ...
Electronic Circuits – EE359A
Electronic Circuits – EE359A

... Figure 11.19 Relevant parts of the SRAM cell circuit during a read operation when the cell is storing a logic 1. Note that initially vQ = VDD and vQ = 0. Also note that the B and B lines are usually precharged to a voltage of about VDD/2. However, in Example 11.2, it is assumed for simplicity that ...
design and evaluation of a hybrid passive/active ripple filter
design and evaluation of a hybrid passive/active ripple filter

... supply voltages. These dc filter capacitors for satellite static power-converter applications have long been a problem. It is not only because of the bulky size required to provide the needed microfarads but also because of their relatively low reliability in the environment of outer space. Among th ...
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Distributed element filter



A distributed element filter is an electronic filter in which capacitance, inductance and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors and resistors as they are in conventional filters. Its purpose is to allow a range of signal frequencies to pass, but to block others. Conventional filters are constructed from inductors and capacitors, and the circuits so built are described by the lumped element model, which considers each element to be ""lumped together"" at one place. That model is conceptually simple, but it becomes increasingly unreliable as the frequency of the signal increases, or equivalently as the wavelength decreases. The distributed element model applies at all frequencies, and is used in transmission line theory; many distributed element components are made of short lengths of transmission line. In the distributed view of circuits, the elements are distributed along the length of conductors and are inextricably mixed together. The filter design is usually concerned only with inductance and capacitance, but because of this mixing of elements they cannot be treated as separate ""lumped"" capacitors and inductors. There is no precise frequency above which distributed element filters must be used but they are especially associated with the microwave band (wavelength less than one metre).Distributed element filters are used in many of the same applications as lumped element filters, such as selectivity of radio channel, bandlimiting of noise and multiplexing of many signals into one channel. Distributed element filters may be constructed to have any of the bandforms possible with lumped elements (low-pass, band-pass, etc.) with the exception of high-pass, which is usually only approximated. All filter classes used in lumped element designs (Butterworth, Chebyshev, etc.) can be implemented using a distributed element approach.There are many component forms used to construct distributed element filters, but all have the common property of causing a discontinuity on the transmission line. These discontinuities present a reactive impedance to a wavefront travelling down the line, and these reactances can be chosen by design to serve as approximations for lumped inductors, capacitors or resonators, as required by the filter.The development of distributed element filters was spurred on by the military need for radar and electronic counter measures during World War II. Lumped element analogue filters had long before been developed but these new military systems operated at microwave frequencies and new filter designs were required. When the war ended, the technology found applications in the microwave links used by telephone companies and other organisations with large fixed-communication networks, such as television broadcasters. Nowadays the technology can be found in several mass-produced consumer items, such as the converters (figure 1 shows an example) used with satellite television dishes.
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