Hello all,
I am designing an antenna circuit for GNSS. There are two bands as shown in the image. U use passive antenna with this amplifier. The receiver requires 20-50dB amplification, but I have around 13 or 14dB respectively with the components I chose including antenna gain and passive losses. The components are designed for the specific GNSS bands.
The total gain is bellow 20dB and I am looking for a way to achieve more. LNA3 is proposed but I could not find an appropriate LNA type for this. A type similar to other LNAs would be fine.
Does anyone have a recommendation for an exact type for this role? I expect optimal gain 10-20dB and frequency band approx. between 1100 - 1700MHz.
Would it make sense to add two LNAs in series for each band instead of using LNA3 as in the schematic?
I am designing an antenna circuit for GNSS. There are two bands as shown in the image. U use passive antenna with this amplifier. The receiver requires 20-50dB amplification, but I have around 13 or 14dB respectively with the components I chose including antenna gain and passive losses. The components are designed for the specific GNSS bands.
The total gain is bellow 20dB and I am looking for a way to achieve more. LNA3 is proposed but I could not find an appropriate LNA type for this. A type similar to other LNAs would be fine.
Does anyone have a recommendation for an exact type for this role? I expect optimal gain 10-20dB and frequency band approx. between 1100 - 1700MHz.
Would it make sense to add two LNAs in series for each band instead of using LNA3 as in the schematic?