Easier way to realize a 2FSK LO in Xband
Easier way to realize a 2FSK LO in Xband
(OP)
Dears,
My current solution is Generate it at DDS and then modulate on L-band, then up-convert to X-band. This solution need a lot of components include a dds, two PLL, two Mixer and lots of amplifiers and filters and attenuators.
Because the 2FSK modulation is two simple, I'm wonder if there is some simpler method to go. Maybe switch between two normal X-band oscillator.
PS, the jitter should be less than 20 ns, the switch time should be less than 20 ns, the spur suppression should be greater than 60dBc, the phase noise should below -80dBc/Hz@1KHz.
Thank you
My current solution is Generate it at DDS and then modulate on L-band, then up-convert to X-band. This solution need a lot of components include a dds, two PLL, two Mixer and lots of amplifiers and filters and attenuators.
Because the 2FSK modulation is two simple, I'm wonder if there is some simpler method to go. Maybe switch between two normal X-band oscillator.
PS, the jitter should be less than 20 ns, the switch time should be less than 20 ns, the spur suppression should be greater than 60dBc, the phase noise should below -80dBc/Hz@1KHz.
Thank you





RE: Easier way to realize a 2FSK LO in Xband
This approach was also related to AFC techiques. With appropriate design, the hardware can do both at once.
The data rates used by those experiments were quite low.
RE: Easier way to realize a 2FSK LO in Xband