Question Pool -- Category E6E
What technique is used to construct low-cost, high-performance crystal
filters?
-
A.
- Choose a center frequency that matches the available crystals
-
B.
- Choose a crystal with the desired bandwidth and operating
frequency to match a desired center frequency
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C.
- Measure crystal bandwidth to ensure at least 20% coupling
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D.
- Measure crystal frequencies and carefully select units with less
than 10% frequency difference
Answer is D.
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