RF Electronics Chapter 7: RF Filters Page 256
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
The final step in the filter design is to change the layout from a simple design as shown
in figure 7.70, to a more compact and easier to manufacture design. To achieve this, the
three tiered ground level shown in figure 7.70 is made one level and the coupling
transmission lines are folded and bent in order to take up as little space as possible, while
connecting to the resonators at the correct tapping points. The harmonic stubs may be
folded, as shown in figures 7.46 and 47. The final layout should also ensure that the input
and output connectors are in the correct location for mounting the filter. Figure 7.73 is a
photograph of the final filter.
Figure 7.73. 750 MHz to 1250 MHz filter hardware.
Figure 7.74. Frequency response of the filter of figure 7.73.
RF Electronics: Design and Simulation
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