Re: Si5351 VFO - Low Pass?
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On Wed, Jan 4, 2017 at 4:55 PM, steve@... [BITX20] <BITX20@...> wrote:
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The diode-ring mixer operates by switching the RF signal straight through to the IF port on one half-cycle of the local oscillator, then switching an inverted version of the RF signal through to the IF port on the next half-cycle. It doesn't depend on the non-linearity of the diodes for its operation - it treats them as switches. Best inter-modulation performance comes from keeping the diodes hard on or hard off, minimizing the time for which they are in an intermediate state.
Steve G3TXQ
-- Mark Baldridge 608.561.3853
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