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A high ratio Wilkinson power divider is produced by cascading low ratio dividers. Combining two 1∶2 and one 1∶3 divider results in a 1∶8 ratio. Theoretically the 1∶8 divider has an S21 of −0.51dB and an S31 of −9.54dB. Under simulation the average S21 over a 1.7–2.7GHz band was −0.7dB and the S31 −10.3dB. A prototype was built on standard 1.6mm FR4 substrate. The 1∶3 divider uses stacked substrates...
Here a method to design transmission lines with controlled characteristic impedance in the highly dense design requirement is presented. In this method a transmission line is designed as a slow-wave synthetic line by repeatedly disturbing either the signal or the return current by adding slots in the grounds over or under the line of interest. To verify the method we have designed and fabricated transmission...
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