A quarter-wave impedance transformer, often written as λ/4 impedance transformer, is a transmission line or waveguide used in electrical engineering of...

radio frequencies and microwave frequencies, a quarter-wave impedance transformer can provide impedance matching between circuits over a limited range...

part of series impedance) will be half of the series impedance of the comparable dipole. A quarter-wave monopole, then, has an impedance(p 173) of    ...

temperature Impedance inverter, a device that produces the mathematical inverse of an electrical impedance—see Quarter-wave impedance transformer Inverse...

distributed element prototype, the stepped impedance prototype. This filter was based on quarter-wave impedance transformers of various widths and was able to...

transmission line is terminated with a matching impedance. Techniques of impedance matching include transformers, adjustable networks of lumped resistance,...

source impedance is lower than the load impedance (unterminated). The effect is similar to an electrically short version of the quarter-wave impedance transformer...

or at least much reduced, at certain frequencies due to quarter wave impedance transformer action. For the most part, audio systems, both professional...

example this method is the quarter-wave impedance transformer formed by a section of mismatched transmission line. If a quarter-wavelength of 75 Ohm coaxial...

As with a quarter-wave transformer, if one port of a gyrator is terminated with a linear load, then the other port presents an impedance inversely proportional...

inductor or a resonant circuit. The other structure is the quarter wave impedance transformer. As its name suggests, this is a line exactly λ / 4 {\displaystyle...

fed from transformers, which may have significant internal impedance in the form of resistance and/or reactance. Transformer internal impedance modifies...

RF/Microwave Applications, pp. 188-190, Wiley, 2004 ISBN 0471464201. Wikimedia Commons has media related to Stubs. Quarter wave impedance transformer...

monopole. For the half-wave λ / 2 {\displaystyle \lambda /2} monopole, the impedance is very high, requiring a matching transformer. Shunt feed - One side...

distributed-element prototype. This prototype was based on quarter wave impedance transformers and was able to produce designs with bandwidths up to an...

antenna coupling transformer also functioned as an impedance matching transformer, that allowed a better match of the antenna impedance to the rest of the...

this distance will convert it to an open circuit through the quarter-wave impedance transformer effect. Thus, the detector has minimal effect on loading the...

any kind may include a transformer and / or transformer balun at their feedpoint, to change the resistive part of the impedance to more nearly match the...

cascaded line one-quarter wavelength long forms a quarter-wave impedance transformer. This has the useful property of transforming any impedance network into...

alternating current because AC voltage may be increased or decreased with a transformer. This allows the power to be transmitted through power lines efficiently...

Connecting exposed conductive parts to a "ground" wire which provides a low-impedance path for current to flow back to the incoming neutral (which is also connected...

higher gain than a quarter wave whip, but it has a current node at its feedpoint at the base of the rod so it has very high input impedance. If it was infinitely...

source impedance is lower than the load impedance (unterminated). The effect is similar to an electrically short version of the quarter-wave impedance transformer...

voltage wave to its current wave. Since most transmission lines also have a reflected wave, the characteristic impedance is generally not the impedance that...

between the individual channels. It uses quarter wave transformers, which can be easily fabricated as quarter wave lines on printed circuit boards. It is...

Without the antenna tuner the impedance mismatch between the antenna and feedline would cause a condition called standing waves (high SWR), in which some...

counterpoise. Impedance matching for end fed antennas tends to use very high-ratio impedance transformers in combination with high-impedance feedline, which...

wire radiator, in series with a quarter-wave parallel transmission line tuning stub that matches the antenna impedance to the feedline. By 1936 this antenna...

pointed by concentrating sound waves from the cheerleader in one direction, thus focusing them. The horn also improves impedance matching between the voice...

end. Input impedance varies with distance from the shorted end by impedance transformer action. The tap point is chosen to achieve an impedance match with...