Ultra-wideband microstrip to CB-CPW transition applied to broadband filter

A new ultra-wideband microstrip to conductor backed coplanar waveguide (CB-CPW) transition structure is presented and implemented. Results show good performance in terms of bandwidth, which is about 12 GHz. Using this transition, a new ultra-wideband filter was designed and fabricated. Simulated and measured results show that the filter can cover the band from 3.1 to 10.6 GHz (−10 dB bandwidth).

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