Advanced Qualification · A-002 Advanced components and circuits · A-002-011-001
What is a crystal lattice filter?
- AA filter with wide bandwidth and shallow skirts made using quartz crystals
- BAn audio filter made with four quartz crystals that resonate at 1 kHz intervals
- CA power supply filter made with interlaced quartz crystals
- DA filter with narrow bandwidth and steep skirts made using quartz crystals
Correct answer: D — A filter with narrow bandwidth and steep skirts made using quartz crystals. From the official ISED question bank, verified word for word.
Why
A crystal lattice filter uses quartz crystals to create a very tight range of allowed frequencies, known as narrow bandwidth, while sharply cutting off signals just outside that range, which creates steep skirts. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits is section A-002 of the Advanced exam: Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.
Drill A-002 — free, no account