ANTENNA CONFIGURATION FOR GPS
Posted: Thu Oct 11, 2018 3:18 am
Hi
i tried to run gnss-sdr for real time acquisition.
I have a nuand bladerf x40 with u-blox active antenna.
Gnss-sdr can't track satellite and reports loss of lock in every channel continuously.
I tried a lot of different conf files and now i begin to think that is an antenna issue.
On gnss sdr site they say that:
"you will need an active antenna (that is, an antenna with an integrated low noise amplifier delivering a gain in the band of interest greater than 20 dB, with a noise figure below 2 dB), and you will need to feed it."
U-blox antenna is an active antenna with Built in low noise amplifier with 29 dB gain and 0.9dB noise figure so i think is suitable.
The problem is that i don't know if i have to feed it externally (maybe with a bias-tee) or it is auto feed by front-end.
Can you list the specification of bias-tee needed
Thank you in advance for your answer.
MC
i tried to run gnss-sdr for real time acquisition.
I have a nuand bladerf x40 with u-blox active antenna.
Gnss-sdr can't track satellite and reports loss of lock in every channel continuously.
I tried a lot of different conf files and now i begin to think that is an antenna issue.
On gnss sdr site they say that:
"you will need an active antenna (that is, an antenna with an integrated low noise amplifier delivering a gain in the band of interest greater than 20 dB, with a noise figure below 2 dB), and you will need to feed it."
U-blox antenna is an active antenna with Built in low noise amplifier with 29 dB gain and 0.9dB noise figure so i think is suitable.
The problem is that i don't know if i have to feed it externally (maybe with a bias-tee) or it is auto feed by front-end.
Can you list the specification of bias-tee needed
Thank you in advance for your answer.
MC