![]() īy v arying the parameter distance to the load, we can achieve the desired values of reactance and susceptance.įor this type of impedance, matching parameters and are important. Īdmittance and impedance are related with Y = 1 X. The parameter d is chosen so the impedance is Z = Z 0 + j X, where reactance is – j X. Series stub tuning is depicted in F igure 2. The parameter d is chosen, so admittance is Y = Y 0 + j B, and susceptance – j B. Parallel stub tuning is depicted in Figure 1. Co– planar waveguides or slot lines are usually connected to a stub in series microstrips in parallel. ![]() A stub is usually made as part of circuit which allows the avoidance of lumped elements. Stub tuning is an impedance matching technique, when an open-circuited or short-circuited transmission line is connected to the main transmission line.
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