Category: 3. Attenuators

A Passive Attenuator is a purely resistive network that can be used to control the level of the output signal The Passive Attenuator is a purely resistive network that is used to weaken or “attenuate” the signal level of a transmission line while improving the impedance match, making passive attenuators the opposite of amplifiers. Passive Attenuators are electrically connected…

Pi-pad Attenuators or π-pad attenuators are commonly used in radio frequency and microwave transmission lines, and can be balanced or unbalanced designs 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…

The Bridged-T Attenuator is another resistive attenuator design which is a variation on the standard symmetrical T-pad 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 attenuator. This additional resistive element enables the circuit to reduce the level of a…

A T-pad attenuator is an attenuator network consisting of three non-inductive resistive elements connected together to form a “T” configuration, (hence its name). 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 L-pad Attenuator is a simple resistive voltage divider network which can be used as a fixed passive attenuator to reduce the amplitude of a signal  its basic form, the L-pad Attenuator is nothing more than a very simple voltage divider network used in many electrical and electronic circuits to generate a lower voltage. The difference this…

A Passive Attenuator is a special type of electrical or electronic bidirectional circuit made up of entirely resistive elements. Passive attenuators are basically two port resistive networks designed to weaken or “attenuate” (hence their name) the power being supplied by a source to a level that is suitable for the connected load. A passive attenuator reduces the amount of…