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In this letter, a novel single split-ring resonator (SRR), which is etched on the back side of a coplanar waveguide (CPW), is presented and discussed. Metallic vias are used to connect the single SRR to ground planes, which greatly improve the performance of the structure. A stop band filter based on this novel structure is simulated and fabricated. Simulated and measured results are in good agreement...
A six-port network based on coplanar waveguide (CPW) interdigitated structures is proposed and presented. Among these six ports, two are isolated ports and two are coupled ports. The left two contain an input port and a direct port. In this paper, the network is designed for dividing the power equally between the two coupled ports and the direct port, namely about 4.8 dB. The return loss is better...
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