Design a stepped-impedance low-pass filter having a cutoff frequency of 3 GHz and a fifth-order 0.5 dB equal-ripple response. Assume
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(a) Find the required electrical lengths of the five sections, and use CAD to plot the insertion loss from 0 to 6 GHz. (b) Lay out the micro strip implementation of the filter on an FR4 substrate having
![1979_4f79b064-8c57-42be-8abe-eed4f7cdcaee.png](https://secure.tutorsglobe.com/CMSImages/1979_4f79b064-8c57-42be-8abe-eed4f7cdcaee.png)
d = 0.079 cm, and tan δ = 0.02, and with copper conductors 0.5 mil thick. Use CAD to plot the insertion loss versus frequency in the pass band of the filter, and compare with the lossless case