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phemt*LNA with bypass switch

Question asked by f_gog0 on Mar 16, 2007
Latest reply on Mar 28, 2007 by dgun
I have done last year project by using PHEMT*low noise amplifier with bypass switch( MGA-72543). By simulation on genesys i did'nt get right result. .Then i found the this articles at technical DATA (pg 13,driver amplifer application)

" it desirable to add external impedance matching at the input to improve......."

The problem is how to matching the circuit using switch..anyone could help me....