Oh, I haven't done it.
Just kibitzing.
It could be another npn gain stage, just that an mmic involves fewer parts,
so easier to patch in ugly-style on the bottom ground plane.
An example might be U2 of Farhan's specan:
? ??
L5 is not totally needed, you just lose a little gain if all you have is a resistor between +12v and the output of U2.
The input and output of U2 must be capacitively coupled to adjoining stages.
The input and output of U2 are fixed at 50 ohms.
So basically a 4 pin IC, a resistor, and two AC coupling caps.
The MAV11 is an older MMIC, though certainly viable the manufacturer doesn't sell them at less than quantity 20:
? ??https://www.minicircuits.com/WebStore/dashboard.html?model=MAV-11SM%2B
Beware of ebay clones, they may or may not work for you.
There are hundreds of MMIC's available, at various power levels, gains, noise figures, frequency ranges, packages,? ...
Choosing one at random, take a look at the datasheet for the BGA616,? Mouser pnum? ?726-BGA616H6327XT
? ??
Jerry, KE7ER
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On Tue, Aug 21, 2018 at 10:17 AM, Gordon Gibby wrote:
Hi Jerry, can you produce a schematic with parts numbers on exactly how to do that? ? I¡¯ve never used one of those components before.?
?
It should be easy to reduce gain in previous day just by simply changing some resistors to higher values in the emitter circuits.¡ª though I haven¡¯t looked at them
?
Gordon
