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spur problem
Hi,
i have a problem with spur in a passive loop filter PLL. input oscillator is 102.4MHz, while PFD input is 25.6 MHz. output of the PLL is 1800MHz. the loop is locked and thare are 2 spurs in addiition to the main carrier. they are in frequencies 1800+/- 102.4. when you change the input frequency to 25.6MHz and PFD frequency to 25.6MHz. they came to the distance of +/-25.6MHz of the carrier. i don know how to remove the spurs. is it possible that it is a PFD or PCB problem?
Hi,
i have a problem with spur in a passive loop filter PLL. input oscillator is 102.4MHz, while PFD input is 25.6 MHz. output of the PLL is 1800MHz. the loop is locked and thare are 2 spurs in addiition to the main carrier. they are in frequencies 1800+/- 102.4. when you change the input frequency to 25.6MHz and PFD frequency to 25.6MHz. they came to the distance of +/-25.6MHz of the carrier. i don know how to remove the spurs. is it possible that it is a PFD or PCB problem?