Bridged-T Attenuator
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Bridged-T Attenuator

As its name implies, the bridged-T attenuator has an additional resistive element forming a bridged network across the two series resistors of the standard T-pad. This additional resistive element enables the circuit to reduce the level of a signal by the required attenuation without changing the characteristic impedance of the circuit as…

Pi-pad Attenuator
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Pi-pad Attenuator

The Pi-pad attenuator is so called because its basic layout and design resembles that of the Greek letter pi ( π ), meaning that it has one series resistor and two parallel shunt resistors to ground at the input and the output. The Pi-pad attenuator is another fully symmetrical purely resistive network…

L-pad Attenuator
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L-pad Attenuator

The difference this time is that this type of attenuator is used in frequency dependent circuits to create loss (attenuation) in a transmission line or to match the impedances of unbalanced source and load networks. The L-pad attenuator consists of two purely resistive elements in series with each other connected across a…

T-pad Attenuator
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T-pad Attenuator

Although not as common, this “T” (tee) configuration can also be thought of as a wye “Y” attenuator configuration as well. Unlike the previous L-pad Attenuator, which has a different resistive value looking into the attenuator from either end making it an asymmetrical, the T-pad attenuator is symmetrical in its…