Figure 5 | Scientific Reports

Figure 5

From: Rapid and reliable re-design of miniaturized microwave passives by means of concurrent parameter scaling and intermittent local tuning

Figure 5

Microstrip couplers employed as verification case studies to validate the re-design procedure proposed in this work: (a) Circuit I: miniaturized branch-line coupler (BLC)86, (b) Circuit II: rat-race coupler of transmission lines folded87, (c) Circuit III: BLC with microstrip cells88, (d) Circuit IV: compact BLC (non-equal power split)89.

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