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Saw Filter

Audio/Video Glossary - Saw FilterA hermetically sealed device, employing SAW (Surface Acoustic Wave) technology, which responds only to a very specific bandwidth. It permits a narrow frequency band to pass through while rejecting all other signals. A SAW filter has very steep shoulders cutting out everything that is outside its band of transmission. SAW filters have excellent out-of-band signal rejection quality eliminating, to a great extent, all unnecessary, spurious signals.