I am adding a FEM, Skyworks 66112, into the RFcircuit for magnifying the output power. Meanwhile, I am investigating the effect to receiver sensitivity as well.
What's the noise figure and gain of the internal LNA in JN5169?
the JN5169-001-M06-2 is high power and has an FL connector. However, the Block diagram shows the M06 has a PA/LNA SE2431.
The SE2431 has a
-Low FEM noise figure of 2dB typical.
-Rx Gain(dB) Typ: 12.5
-TX Gain (dB): 23
Gain is the sum of the LNA + down-mixer + filter for each of the 3 possible gains (high, middle, low):
Rx NF (nominal value)
High gain: 61dB 11dB Pin=-70dBm @ch11
Mid gain: 33dB 19dB Pin=-45dBm @ch11
Low gain: 13dB 39dB Pin=-24dBm @ch13
From the datasheet of JN5169-001-M06-2, I saw the receiver sensitivity was improved from -96dBm to -100dBm with SE2431.
As the Rx sensitivity improved by around 4dB, I assume the noise figure of JN5169 internal LNA is around 7dB.
The noise figure of SKY66112 is around 2dB, with a typical Rx gain of 11dB slightly lower than SE2431.
Therefore, I expect the Rx sensitivity would be improved by 4dB as well, if I add a SKY66112 between JN5169 and antenna port.
Do you agree with that?
It is possible to achieve the 4 dB extra that you want,
Note: Please be sure that you are care of the control lines and the machining pad of 50 ohms.
Retrieving data ...