An all - digital - - frequency discriminator of arbitrary order

In this paper, we propose an all-digital frequency output of the synthesizer. High reference frequency (REF) is synthesizer architecture, based on an all-digital XA-frequency used to push the spurs far from the carrier. The need for high discriminator. The new all-digital synthesizer is compared to sampling frequency, in addition to the resolution being previously published work. The architecture of the XAdependent on the number of stages, both make the TDC frequency discriminator is verified using behavioral power hungry. In this work, we show that using XA-noise simulation. shaping techniques, we can avoid the use of a TDC and implement an all-digital noise-shaped frequency Index termsXAFD, D/A, TDC, digitally controlled oscillator discriminator of arbitrary order. In the proposed architecture, (DCO), frequency synthesizers, digital frequency synthesizer, improvement in fractional resolution is due to XA-noise fractional, all-Digital, sigma delta, phase domain, frequency shapin rather than fractional error correction using a TDC. discriminator, retiming, divider, quantizer. FCW Loop ~~~I + ~~~~~Filter