Ispired by a relatively old paper titled
"Low Cost Electronically Steered Antenna and Receiver System for Mobile Satellite Communications"
and attached, I was wondering if it would be possible to use the AD8346 as phase shifter for GPS.
The part originally used was a HPMX-2001 and the LO 0/90 were fed with an active GPS antenna feed (25dB gain and 2dB noise figure) passing through a 90 deg coupler.
Obviously the datasheet states that a LO drive of -10dB is optimal for these quadrature modulators.. but I was wondering what would happen if I would connect a "noise like" at roundabout -100dBm
I hope this intrigues someone wiser than me!