Fill in the Blanks


1		A switching amplifier is a(n) that is used as a switch and is either conducting or nonconducting.


2		A class D amplifier uses a pair of transistors to produce a wave current in a tuned circuit.


3		Class S amplifiers, which use switching techniques but with a scheme of pulse-width modulation, are found primarily in applications.


4		The concept behind a(n) amplifier is that the distortion produced by the power amplifier is isolated and then subtracted from the amplified signal, producing a nearly distortion-free output signal.


5		Adaptive predistortion amplification uses a digital signal processing technique to the signal in such a way that when amplified the amplifier distortion will offset the predistortion characteristics.


6		The circuits used to connect one stage to another are known as networks.


7		The L-matching network is designed so that the impedance is matched to the source impedance.


8		The network in the figure above is known as a(n) network.


9		can be connected in unique combinations called baluns to match impedances.


10		tapped coils called autotransformers can be used for impedance matching between RF stages.


11		A broadband transformer is a unique type of transformer that is widely used in power amplifiers for between stages and impedance matching.


12		PLL frequency in which a crystal oscillator is the basic stabilizing reference are used in applications requiring multiple channels of operation.


13		In some very high-frequency PLL synthesizers, a special frequency divider called a prescaler is used between the high-output frequency of the and the programmable part of the divider.


14		The combination of a register and an adder is generally referred to as a(n) .


15		Linear amplifiers provide an output signal that is a(n) , enlarged replica of the input.

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