This is not exactly relate to the original question. My question is how useful is LTSpice for RF design? I was an RF engineer, we use Microwave Office and using Smith Chart for matching and gain. I don't see LTSpice can help much in designing RF circuits(tuned circuit). Particularly when use start using distributed elements ( using stripline or microstrip to simulate inductors and capacitors).
I am sure LTSpice can give you the answer if you fill in the values of the L R C, but it will not help you in optimizing the circuit which is the key for RF circuit. But you cannot guess the values.
I use LTSpice for RF transistors only for wide band circuits where smith chart is not particularly useful.
