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Old 04-12-2007, 06:11 AM
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Default how two sine signals are multiplied in VHDL language

hi all,

iam doing projevt on Digital down converter.In that i need to multiply
RF signal and LO signal . which type of multiplier is suited for
multiplication of two sinusoidal signal using FPGA.if any body is
having code iwould be thankful to you

pls reply

kanthi

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Old 04-12-2007, 09:47 AM
Alan Myler \(at home\)
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Default Re: how two sine signals are multiplied in VHDL language

<[email protected]> wrote in message
news:[email protected] ups.com...
> hi all,
>
> iam doing projevt on Digital down converter.In that i need to multiply
> RF signal and LO signal . which type of multiplier is suited for
> multiplication of two sinusoidal signal using FPGA.if any body is
> having code iwould be thankful to you
>
> pls reply
>
> kanthi
>


The * operator is what you need.

Google will help you to find an example of a signed multiplier,
e.g. http://www.altera.com/support/exampl...ultiplier.html

Alan



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Old 04-12-2007, 04:41 PM
Alan Nishioka
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Default Re: how two sine signals are multiplied in VHDL language

On Apr 11, 10:11 pm, [email protected] wrote:
> iam doing projevt on Digital down converter.In that i need to multiply
> RF signal and LO signal . which type of multiplier is suited for
> multiplication of two sinusoidal signal using FPGA.if any body is
> having code iwould be thankful to you


When I first read about mixers, I thought that it was some special
operation to have such interesting results. It was only later that I
realized they were talking about the multiplication I learned in the
third grade. (So *that's* why the symbol for a mixer is a big X!)

Alan Nishioka

PS. I only answered this so there would be two messages from people
with the same first name.

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