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how to generate a sine wave pulse?

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jlee

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pulse to sin generate

Hi all,

I want to generate a single sine wave pulse in Cadence's schematic as follows, then simulate in Analog environment's spectre transient analysis. The purpose of the sine wave pulse is to trigger a miller frequency divider.

Can anyone please tell me what components in Cadence schematics can generate this single sine wave pulse? Thank you very much.
 

Hi Sunking, thanks for reply. I mean, how to multiply the vsin with vpulse? I don't have multiplier, nor AND gate. Is there an option to combine the vpulse and vsin?

Thank you very much.
 

I had gen it with Hspice.

Add two sin wave(sin1,sin2) to one node,
sin1,sin2 are current source, they have same frequency f,
sin1=sin(2pai*f*t),start at 0ns
sin2=sin(-2pai*f*t), start at 1/f ns

best regards,
fish
 

    J

    jlee

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jlee said:
Hi Sunking, thanks for reply. I mean, how to multiply the vsin with vpulse? I don't have multiplier, nor AND gate. Is there an option to combine the vpulse and vsin?

Thank you very much.
Click to expand...

hello,
i think u can do a simple verilog A block,
Code: 
module multiplier (in1,in2,out);
            input in1,in2;
            output out;
            electrical in1,out,in2;
analog begin
             V(out) <+ (V(in1)*V(in2));
end
endmodule
i didnt try it , but i guess it should work OK.
 

you can use a comparator: to an imput you apply a sin and to another a pulse with zero value= 0 and one value = 1.
 

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