hello people !
could u give me a basic idea how to implement digital VCO in FPGA board ?
i would highly appreciate any suggestions . thank you in advance.
Look into NCO or numerically controller oscillator. It's basically an integrator that overflows at some rate. The MSB of the integrator is the output & you can change the frequency by changing the integrator input.
generally the NCO is implemented with LUT which contains the sin(cos) value. u use the output of integrator as the address. the frequency will be determined by the integrator step.
thank you a lot ... RBB & Seesea for your quick response .
i got some ideas, thanx. i am a beginner ... u guys must be something similar with the image i have uploaded.
Cud u plz help me where cud i find some reference or example to model NCO ??
thanking u in advance.