Limesdr-Mini Antenna Gain Modes: None, LNAL_NC, LNAH and LNAW

[en1gma]

For the LIMESDR-Mini https://discourse.myriadrf.org/t/rf-connection-10-u-fl-connectors-6-rx-4-tx/305/9

@RicardasVadoklis

LMS7002M has 3x Rceiver RF inputs and 2x Tx output per channel. By design receiver inputs are tuned as follows:

LNAL - from 0.1 MHz to 2000 MHz. Gives a noise figure <2dB.
LNAH - from 1500 MHz to 3800 MHz. Gives a noise figure <3dB.
LNAW - from 0.1 MHz to 3800 MHz. Gives a noise figure 5-7dB. Usually used for sniffing.

Transmitter output bu design are similar and supported frequency range is form 0.1-3800 MHz.

However, every RF input/output is combined with RF matching network which might be band specific. On the LimeSDR the RF inputs/outputs are tuned for:

LNAL - is tuned for 800 - 900 MHz (3GPP Band V).
LNAH - is tuned for 1900 MHz (3GPP Band I).
LNAW - has broadband matching up to 2000 MHz.
TXout1 - is tuned for 2600 MHz (3GPP Band VII) .
TXout2 - has broadband matching up to 2000 MHz.

The matching network includes broadband Balun + network for fine tune for specific band, hence can be easily modified.

@ricsi

The LMS7002M synthesizer frequency range is from 30 MHz - 3800 MHz. We are using internal NCO to get us to 100 kHz region.

Best,
Ricardas

does anyone have this information for the limesdr-mini?

[Zack]

Hi @en1gma,

Check here, please:
https://wiki.myriadrf.org/LimeSDR-Mini_v1.1_hardware_description#RF_Frequency_Range

[MountainLogic]

link seems to be broken

[Zack]

Link is OK, there were database issues. Fixed now.

[andrewback]

Sorry about that, putting auto-restart in place.