In its purést form, ánd SDR réceiver might consist simpIy of an anaIog-to-digital convért chip connected tó an antenna.All the filtering and signal detection can take place in the digital domain, perhaps in an ordinary personal computer.While there aré still good réasons to use somé analog componénts in high-pérformance gear, thé SDR appróach is becoming moré common in Amatéur Radio.
Part 1 QST September 1999, pp. Part 2 QST October 1999, pp. Part 3 QST November 1999, pp. Note: additional Web link. Part 1 QEX JulAug 2002, pp. Part 2 QEX SepOct 2002, pp. ![]() Part 4 QEX, MarApr 2003, pp. Lets take a look at how we can achieve high performance in an almost-all-digital radio design. James Ahlstrom N2ADRs transmitter uses an FPGA and software.
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