RF Electronics Chapter 7: RF Filters Page 232
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
vertical transmission lines form the inductors. The parallel plates at the end of the
transmission lines are pads for capacitors. Sufficient space is allowed to fit 2 capacitors
in parallel to permit the capacitors to be realised with a high precision. The first and last
inductors are tapped transmission lines, to allow the input and output to be coupled to the
filter at the correct impedances.
Figure 7.38. Coupled resonator filter using Microstrip inductors.
Figure 7.39. Frequency response of the filter of figure 7.38.
Figure 7.39 shows the frequency response of the filter. This filter had to satisfy passband
insertion-loss constraints and as a result it corresponds to a Butterworth type frequency
RF Electronics: Design and Simulation
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