RF Receiver 200mhz Design

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anil.rajun

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Please find below image have the Block diagram of 200 Mhz RF Receiver. here i found RF-Detector in Linear Technalogy Corp LT5537

& also i need design Low Noise Amplifier's please share your thoughts on designing
Low Noise Amplifier Input Power is -90dbm & output is 30db

RF Detector ==> LT5537
LNA ==> ?


Iam New to this RF Section, so please suggest your thoughts on LNA Design.
 
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Input Power = -90 dBm
Output Power = 30 dBm.( 1W@50 Ohm ) !!!! 8-O
Gain=120dB !!!

You're kidding or you would mean -30dBm..
 

Sorry, it's -76 db to 14 db [Exepecting 90% Signal Strength]

BigBoss said:
Input Power = -90 dBm
Output Power = 30 dBm.( 1W@50 Ohm ) !!!! 8-O
Gain=120dB !!!

You're kidding or you would mean -30dBm..
Click to expand...
 

The input dynamic range of LT5537 is form -74dBm to +14dBm.
I assume you need an LNA to be placed in front of the detector to increase its dynamic range below -74dBm, somewhere near -90dBm.
So, you need an LNA with 16dB of Gain.
You can use one of the low noise MMICs from Minicircuits:

**broken link removed**
 

Yes, You are right -90dbm input power & also i need 30db output gain also.

 

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