choosing an amplifier for a RF front end

[per_lube]

Hi,

I'm working on a cheap receiver development for a point to point communication link working @11 GHz.
I'm using schottky diode detector as the receiver and can detect signals which are @ -35 dBm only with diode detector.

In order to improve the sensitivity, I'm planning to have LNA before the diode detector.
I found this one SKYWORKS SKY65013-92LF Cascadable Amplifier LF–12 GHz(https://www.skyworksinc.com/uploads/documents/200359B.pdf) which is very cheap (< $2) and easy to use (I/O 50 ohm matched).

However, Noise figure is 5.8 dB. Will this create problems if I use this one to amplify the received signals?

Could anyone explain me what might be the problems could occur with this amplifier?

cheers,
per_lube

 

[BigBoss]

NF will decrease MDS level but it's not an issue seriously because MDS is much lower than your detection level.If you use -for instance-10dB Gain amplifier, your detector will sense practically -45dBm.
Also, you may realize an LNA with much lower NF by using of discrete elements.It's an option to,,