On Tue, 7 Oct 2008 22:02:48 EDT, CAA357@aol.com wrote:
>building or schematics of a wide band
>180 degree phase shifter
Do you mean a POLARITY inverter or PHASE shifter? They are VERY
different. PHASE is a function of frequency, while polarity is
not. Polarity is nothing more than turning the waveform upside
down at ALL frequencies. Some good ways to invert the polarity
are 1) a conventional gain stage (not a "follower"); 2) a
transformer. A polarity inverter
Virtually all networks or transmission lines are extremely
frequency sensitive. Polarity inverters are frequency-sensitive
only to the extent that the gain stage or transformer is non-
ideal (that is, that it has stray L or C or both).
73,
Jim Brown K9YC
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|