Communications

If the spectrum is shifted in frequency with no other changes, this is known as

If the frequency of each component in a signal spectrum is increased by the same fixed amount, this is known as

A particular amplifier circuit used for frequency doubling.

Frequency division is useful in the implementation of a

Identify an electronic device, not specifically designed for the purpose, which can be used as a phase detector.

A particular frequency synthesizer contains only a single crystal. What words describe this synthesizer?

A recognizable feature of a CW transmitter is

The term "pulling" refers to

A disadvantage of direct FM is the need for

Direct FM can be achieved by

Why is it often necessary to precede the demodulator by amplifier stages in a receiver?

A serious disadvantage of the TRF receiver

Which major element will not be found in every superheterodyne receiver?

The key to achieving receiver sensitivity is the reduction of

Which of the following receiver design objectives is not impossible?

In comparing the S/N ratio for the input to the receiver with the S/N ratio for the output, the latter is

The characteristic of a receiver that specifies the self-generated noise.

The ratio of the superheterodyne receiver response at the desired carrier frequency to that at the image frequency is called

The core of an IF transformer usually contains

Shape factor is a measure of