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LNA Design for satellite receiver - RF Cafe Forums
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Post subject: LNA Design for satellite receiver
Posted: Sun May 15, 2005 3:05 pm
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Joined: Sun May 15, 2005
2:46 pm
Posts: 1 |
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Can anyone tell me how it is possible to build a
low noise amplifier with a gain of more than 50
dB and a noise figure less than 1 dB? Most LNB's
of a satellite receiver have such good characteristics
but most commercial IC's and MMIC's are far away
from that.
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Post subject:
Posted: Thu May 19, 2005 2:50 pm
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The overall noise figure is dominated by the first
stage in the design. You could cascade several amps
and rig up a high gain low noise amp yourself. Only
the first stage would have to be low noise, the
rest don't have to.
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Post subject:
Posted: Sat May 28, 2005 2:24 pm
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what frequencies are we talking about?
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Posted 11/12/2012
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