AD9954 harmonices use

I want to have a FSK signal at 1500MHZ,I want to modulate AD9954(crystal 20MHZ ,PLL*20) at 100MHZ.

The DDS have a 1500MHZ spur at -40dBc relative ro main 100MHZ signal,
I want to filter out other spur signals and extract 1500MHZ and amplify it to 0dbm.

Is this a right way for FSK? What filter should I use and is better to remove spurs?

I don't think that you are following a promising technique for a FSK transmitter. A lot of synthesizer circuits is able to generate 1500 Mhz or at least 500 or 750 MHz directly. This way, you can get a spurious free 1500 MHz carrier with less effort.

Please give some part numbers.

E.g. Analog ADF4360 With frequency doubling or tripling, nearly any ISM FSK transmitter as CC1050 can be used.