Extra exam question E8A08
Subelement E8, SIGNALS AND EMISSIONS· Group E8A
Why are direct or flash conversion analog-to-digital converters used for a software defined radio?
- A.Very low power consumption decreases frequency drift
- B.Immunity to out-of-sequence coding reduces spurious responses
- C.Very high speed allows digitizing high frequencies (correct answer)
- D.All these choices are correct
WhyDirect or flash conversion analog-to-digital converters are used for a software defined radio because their very high speed allows digitizing high frequencies. Direct or flash conversion ADCs are used in software defined radios because their very high conversion speed lets them digitize signals at high RF frequencies directly, without first needing to mix the signal down to a lower frequency, answer C. Low power consumption and out-of-sequence-coding immunity aren't the primary reason this ADC architecture is chosen for high-speed SDR sampling, so "all these choices" overstates it.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- E8A01What technique shows that a square wave is made up of a sine wave and its odd harmonics?
- E8A02Which of the following is a type of analog-to-digital conversion?
- E8A03Which of the following describes a signal in the time domain?
- E8A04What is “dither” with respect to analog-to-digital converters?
- E8A05What is the benefit of making voltage measurements with a true-RMS calculating meter?