In July 2011 issue of AD's Analog Dialogue I spotted this article on RF design: Differential Interfaces Improve Performance in RF Transceiver Designs.
It is about designing an I/Q receiver and a transmitter using a differential signal path instead of the more common single-ended approach. With three practical examples including calculations, this article should help the design of a differential chain for HF/VHF HAM use.
Prove me wrong, but hasn't the NE602 got differential inputs and outputs?!
1 comment:
Yes the NE602 is fully differential.
If you haven't already done so, see:
http://www.gadgeteer.us/PORTABLE.html
It is a 20M receiver by Bill Meara (soldersmoke fame).
It uses 3 NE602's and a LM386
NE602 as an RF pre-amp
NE602 as detector
NE602 as AF pre-amp
LM386 as AF amp
I have no idea if it is a good design or not, but is is unique in that the whole chain is differential, including the LM386.
Paul - K0EET
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