2409Re: [softrock40] Re: DDS spurs
- Jan 24, 2006Double balanced mixers love square wave LO and produce less distortion due to the speed through the switch point. A square wave is easier to filter into a sine than going the other way.
KY1K <ky1k@...> wrote:
At 09:25 PM 1/22/2006, you wrote:
>Very true! I'm hoping some sharp fpga programmer figures out how to
>make a variable frequency square wave because we don't need no
>stinkin sine wave anyway.
I'm sure this is highly debatable. If your frequency is low enough
for a softrock-40 type application, then a square wave is fine.
But, most of us need sinewaves............
>The DDS has a way to go before it can compete with a good synthesizer design.
>It is easy it is quick but it is not clean enough to be called premium grade.
No argument here. DDS offers much though. A clean DDS would be a
giant leap forward in the softrock type receiver/transceiver
Does anyone know what frequency ECL logic can be clocked at?
- << Previous post in topic