carrier amplifier

carrier amplifier

[′kar·ē·ər ‚am·plə‚fī·ər]
(electronics)
A direct-current amplifier in which the dc input signal is filtered by a low-pass filter, then used to modulate a carrier so it can be amplified conventionally as an alternating-current signal; the amplified dc output is obtained by rectifying and filtering the rectified carrier signal.
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References in periodicals archive ?
On the other hand, in order to improve the linearity of Doherty power amplifier, one of the possible and simplified techniques is Composite Right/Left-Handed Transmission Lines (CRLH-TL) for its character of suppressing the second harmonic of the carrier amplifier of the Doherty power amplifier.
At this time, the carrier amplifier will be gradually saturated to keep a high efficiency while the peak amplifier provides the additional power required.
The advantage is that the carrier amplifier amplifies only the average signal.
A conventional Doherty amplifier is composed of a carrier amplifier and a peak amplifier.
A Doherty amplifier consists of a carrier amplifier, a peak amplifier and a power combining network.
The RF performances of the Doherty amplifier-I (a combination of a class B carrier amplifier and a bias-tuned class C peaking amplifier) have been compared with those of a class B amplifier alone.
The displayed amplifier shown is an 80 W IS-136 compliant PCS single carrier amplifier operating from a wide range 20 to 30 V DC supply.

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