A power supply filter made with interlaced quartz crystals
An audio filter made with four quartz crystals that resonate at 1 kHz intervals
A filter using lattice-shaped quartz crystals for high-Q performance
A filter for low-level signals made using quartz crystals✓الإجابة الصحيحة
الشرح
A crystal lattice filter uses quartz crystals as the resonant elements arranged in a lattice topology. The extremely high Q of quartz gives the narrow bandwidth and steep skirts needed at an IF or in an SSB generator, and it handles signal-level, not power-supply, currents. The crystals are not shaped like a lattice; the network is.