Conjugate Matching Zio?
–Using published large signal data, Zin – Zout, is a good starting point for circuit design. It must be remembered that the data was obtained in a narrow band circuit and one can expect some variations in performance due to the fact that the termination impedance at the harmonic frequencies is totally different from a narrow band circuit and a broad band circuit. Since most device designs utilize class AB operation, considerable harmonic voltages are present on the drain of the device and the termination at the harmonic frequencies can affect the actual performance considerably. Using a large signal simulation, can fine tune the circuit before actual physical construction. 10. Noise figure, much like load line matching, is not determined by small signal S parameters. Very similar to power matching, noise matching is achieved with presenting the input of the device with a load impedance that results in the optimum noise figure. Presently Polyfet does not provide noise figure impedance