be a capacitor or an inductor, whose impedance in both cases is frequency dependent, and will not, in general, follow the frequency dependence of the source impedance. For wide bandwidth applications, a more complex network must be designed.

Phase-shifting matching network

If a lossless reciprocal two-port network matches a load impedance to a source impedance with transmission phase shift (i.e., ), then the transmission matrix of the matching network can be expressed

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