Extra exam question E7F04
Subelement E7, PRACTICAL CIRCUITS· Group E7F
Which method generates an SSB signal using digital signal processing?
- A.Mixing products are converted to voltages and subtracted by adder circuits
- B.A frequency synthesizer removes unwanted sidebands
- C.Varying quartz crystal characteristics are emulated in digital form
- D.Signals are combined in quadrature phase relationship (correct answer)
WhyDigital signal processing can generate an SSB signal by combining signals in a quadrature phase relationship. Digital signal processing can generate an SSB signal by combining two signal paths in a quadrature (90-degree) phase relationship, the digital equivalent of the classic analog phasing method for SSB generation, answer D. Subtracting converted mixing products with adder circuits, having a frequency synthesizer remove sidebands, or emulating varying crystal characteristics digitally don't describe the actual quadrature-based technique DSP uses for this.
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.
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