[minima] Re: One LPF for minima
- From: farhanbox@xxxxxxxxx
- To: minima@xxxxxxxxxxxxx
- Date: Fri, 21 Feb 2014 01:20:08 +0000
Bhatnagar san,
I originally used just one. The lo leakage was substantial. So I have switched
to two.
It is imp that the lo be prevented from getting into the linear chain. That's
why have two lpfs before the pa.
- f
Sent from BlackBerry® on Airtel
-----Original Message-----
From: SP Bhatnagar <vu2spf@xxxxxxxxx>
Sender: minima-bounce@xxxxxxxxxxxxx
Date: Fri, 21 Feb 2014 06:36:18
To: <minima@xxxxxxxxxxxxx>
Reply-To: minima@xxxxxxxxxxxxx
Subject: [minima] One LPF for minima
Do we need two sets of LPF ? If the mixer is working reasonably well, then
only one LPF at the antenna should suffice.
Rx chain -> Ant -> LPF -> Mixer....
Tx chain ... Mixer -> PA -> LPF -> Ant
We may perhaps use a one stage lpf at the PA input if essential.
Any thoughts.
Happy minimimg,
VU2SPF/Bhatnagar
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