Advanced Qualification · A-002 Advanced components and circuits · A-002-012-008
Where you require bandwidth at VHF and higher frequencies about equal to a television channel, a good choice of filter is the:
- A none of the other answers
- B resonant cavity
- C Butterworth
- D Chebyshev
Correct answer: A — none of the other answers. From the official ISED question bank, verified word for word.
Why
None of the other answers is correct because resonant cavities, Butterworth, and Chebyshev filters cannot easily provide the very wide bandwidth needed for a full television channel at VHF and higher frequencies. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.