Adjusting input/output impedances of an electrical circuit for some purpose
"Impedance mismatch" redirects here. For the computer science concept, see object-relational impedance mismatch.
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Source and load impedance circuit
In electrical engineering, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for a desired value. Often, the desired value is selected to maximize power transfer or minimize signal reflection. For example, impedance matching typically is used to improve power transfer from a radio transmitter via the interconnecting transmission line to the antenna. Signals on a transmission line will be transmitted without reflections if the transmission line is terminated with a matching impedance.
Techniques of impedance matching include transformers, adjustable networks of lumped resistance, capacitance and inductance, or properly proportioned transmission lines. Practical impedance-matching devices will generally provide best results over a specified frequency band.
The concept of impedance matching is widespread in electrical engineering, but is relevant in other applications in which a form of energy, not necessarily electrical, is transferred between a source and a load, such as in acoustics or optics.
and 21 Related for: Impedance matching information
electrical engineering, impedancematching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for...
Nominal impedance, approximate designed impedanceImpedancematching, the adjustment of input impedance and output impedance Mechanical impedance, a measure...
and the process of correcting an impedance mismatch is called impedancematching. Since the characteristic impedance for a homogeneous transmission line...
(SWR) is a measure of impedancematching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing...
Its purpose is to optimize power transfer by matching the impedance of the radio to the signal impedance on the feedline to the antenna. Various alternate...
properly converted into electrical terms (current and impedance for example).: 14 Impedancematching is important when components of an electric circuit...
to the earphone is impedancematching. The maximum power is transferred from one part of a circuit to another when the impedance of one circuit is the...
just consists of an impedancematching circuit (if needed) between the antenna and transmitter or receiver, which matches the impedance of the antenna to...
approaches zero. Using a large ratio is called impedance bridging. A related concept is reflectionless impedancematching. In radio frequency transmission lines...
sole purpose was to match together two disparate impedances. Zobel continued to invent impedancematching networks throughout his career. During World War II...
purpose of marriage Impedancematching, in electronics, attempting to make the output impedance of a source equal to the input impedance of the load to which...
as a fallback Impedance control Impedancematching – Adjusting input/output impedances of an electrical circuit for some purpose Impedance microbiology...
for impedancematching. A speaker L pad is a special configuration of rheostats used to control volume while maintaining a constant load impedance on the...
purpose is something other than to filter signals. Such devices include impedancematching components, directional couplers, and diplexers. These devices frequently...
SciTech Publishing, Inc. under the same ISBN and LCCN.) "ImpedanceMatching and Smith Chart Impedance" (Application note). Maxim Integrated Products, Inc....
transformer (Guanella 1944) is often combined with a balun to act as an impedancematching transformer. Putting balancing aside a transformer of this type consists...
converter can be used to maximize the power transfer through the use of impedancematching. An application of this is in a maximum power point tracker commonly...
The main alternative to impedance bridging is impedancematching which maximizes power transfer for a given source impedance. However, this has not been...
destination. Transmission lines use specialized construction, and impedancematching, to carry electromagnetic signals with minimal reflections and power...
effects including: Advantages: Reduces the 6dB attenuation incurred by impedancematching, which helps by reducing the amount of make-up amplification required...
power from reaching the destination. Transmission line cables require impedancematching to carry electromagnetic signals with minimal reflections and power...
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