Liquid-crystal materials have often been referred to as a curious phase of matter, but their impact on modern technology has been profound. With the roots of their discovery in derivatives of ...
A BRIEF outline of the history of the crystal filter has been publishad by J. E. Bsnson (A.W.A. Tech, Rev., 5, 191; 1941). The earliest application of piezo-electric crystals to frequency - selective ...
Ceramic resonators and filters occupy a practical middle ground in frequency control and signal conditioning, offering designers cost-effective alternatives to quartz crystals and LC networks. Built ...
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