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[Wireless and RF]
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Keywords: max3540, atsc, a/74, 8vsb, 8-vsb, dtv, digital tv, blocker, dur, d/u, sfq, noise, interference
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Related Parts
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APP 3946: Dec 22, 2006
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| APPLICATION NOTE 3946
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ATSC 8-VSB Blocker Measurement System
Abstract: A setup is presented for measuring ATSC 8-VSB receiver blocker performance that overcomes out-of-band noise limitations of the Rohde & Schwarz SFQ TV Test Transmitter. The setup involves close-in filtering with a SAW filter at 44MHz, mixing up to a fixed, desired RF frequency, and filtering further-out noise with a cavity bandpass filter. Blocker requirements in the ATSC A/74 standard are discussed. The SFQ out-of-band noise is shown before and after the two filter stages
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