buffer amplifier


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buffer amplifier

[¦bəf·ər ′am·plə‚fī·ər]
(electronics)
An amplifier used after an oscillator or other critical stage to isolate it from the effects of load impedance variations in subsequent stages. Also known as buffer; buffer stage.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

buffer amplifier

An analog device that is typically used for impedance matching and signal isolation. For example, a sound card typically uses buffer amps at most of its input and output ports.
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References in periodicals archive ?
The impedance multiplication circuit, using the unity gain buffer amplifier, is shown in Fig.
As a result, this new device serves as an excellent LNA or buffer amplifier for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS), SATCOM and VSAT applications.
These base station mixers are discrete designs or hybrid modules1 driven by external 50 [OMEGA] buffer amplifiers. Therefore, it is possible to filter the local oscillator residual noise before applying it to the mixer.
The aluminum-enclosed 1.25" x1.25" x 0.59" amplifier has three SMA connectors and is appropriate for IF or RF buffer amplifiers, base stations and general lab use for in-house testing.
They contain internal regulators, internal buffer amplifiers, and operate over the temperature range of -30[degrees] to +70[degrees]C.
The classic feedback oscillator lends itself to meeting these requirements, (1) while an MMIC-based implementation results in a low cost solution incorporating ancillary circuits such as buffer amplifiers, a prescaler and a frequency doubler.
Each device prevents LO pulling through the implementation of two high-isolation buffer amplifiers. The overall cascade provides >40 dB of LO input-to-output isolation.
LT-series synthesizers are supplied with internal regulators, internal buffer amplifiers and typically operate over the temperature range of -30[degrees] to +70[degrees]C.
The LT-series is supplied with internal regulators, internal buffer amplifiers and typically operates over the temperature range of -30[degrees] to +70[degrees]C.
This pair of GaAs InGaP HBT MMIC VCOs has integrated resonators, negative resistance devices, varactor diodes and buffer amplifiers covering applications from 5.0 to 6.1 GHz.
The phase-locked frequency synthesizers are supplied with internal regulators, internal buffer amplifiers and typically operate over the temperature range of -30[degrees] to +70[degrees]C.