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From: karn@jupiter (Phil R. Karn)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: New cheap 200 kHz ADC: good for digital receiver?
Message-ID: <17673@bellcore.bellcore.com>
Date: 21 Sep 89 01:29:13 GMT
References: <1989Sep19.171259.1670@mentor.com>
Sender: news@bellcore.bellcore.com
Reply-To: karn@jupiter.bellcore.com (Phil R. Karn)
Organization: Bell Communications Research, Inc
Lines: 12

>  Antenna ---> Mixer ---> LPF/gain --> ADC -----> DSP -----> DAC -----> audio
>                 ^                                |
>                 |                                |
>              DDSynth                             \------> data
>
>A few real RF stages + cheap digital VLSI = high-performance receiver?

Actually, you'll want two mixers, low pass filters and A/D converters.
The mixers should operate in quadrature so you can do things like SSB
filtering in DSP software.

Phil