RF Electronics Chapter 7: RF Filters Page 239
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
circuit and the input and output leads. The stopband attenuation can be optimised by
mounting the filter in a conductive (aluminium) enclosure and applying microwave-
absorbing material in the appropriate places, to be determined experimentally. In many
cases, applying the absorber to the back ground-plane of the filter improves the stopband
performance sufficiently. Both EM simulations give a good agreement between the
measured and simulated results at 2 GHz, but the circuit simulations give a poor
agreement there.
Figure 7.51. Passband response of hairpin filter of figures 7.46 and 7.49.
Figure 7.52. Frequency response of hairpin filter of figures 7.46 and 7.49.
RF Electronics: Design and Simulation
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