Aug 24, 2009 #1 M mastericke Newbie level 6 Joined Jun 25, 2009 Messages 11 Helped 3 Reputation 6 Reaction score 2 Trophy points 1,283 Location china Activity points 1,339 input sensitivity When i read about input sensitivity in Section2.4 of RF microelctronics(RAZAVI), i am confused about input sensitivity caculation. If a SNR of 8dB in a bandwidth of 200kHz is required, and the total NF is 4dB, so how to caculate the input sensitivity is about -109dBm?
input sensitivity When i read about input sensitivity in Section2.4 of RF microelctronics(RAZAVI), i am confused about input sensitivity caculation. If a SNR of 8dB in a bandwidth of 200kHz is required, and the total NF is 4dB, so how to caculate the input sensitivity is about -109dBm?
Aug 24, 2009 #2 Y yubingz Junior Member level 3 Joined Feb 21, 2008 Messages 31 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,436 input sensitiv* -174dBm+10*lg200000+8+4 noise floor, band width, SNR, NF
Aug 24, 2009 #3 M mastericke Newbie level 6 Joined Jun 25, 2009 Messages 11 Helped 3 Reputation 6 Reaction score 2 Trophy points 1,283 Location china Activity points 1,339 input sensitivity +4db and -10db hi, yubingz the result of the eqution that you give is -147dBm, not -109dBm. This question is in th e first page of chapter6 in RF electronics(Razavi). what's the problem? thx!!!
input sensitivity +4db and -10db hi, yubingz the result of the eqution that you give is -147dBm, not -109dBm. This question is in th e first page of chapter6 in RF electronics(Razavi). what's the problem? thx!!!
Aug 24, 2009 #4 V VSWR Advanced Member level 3 Joined Feb 7, 2002 Messages 746 Helped 103 Reputation 206 Reaction score 24 Trophy points 1,298 Activity points 5,423 what is input sensitivity See below:
Aug 25, 2009 #5 Y yubingz Junior Member level 3 Joined Feb 21, 2008 Messages 31 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,436 input sensitivit calculate it carefully