Dual-band UWB filter using multilayer liquid crystal polymer technology

Dual-band UWB filter using multilayer liquid crystal polymer technology

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A novel dual-band ultra-wideband (UWB) bandpass filter with compact size is reported. A multilayer structure is adopted to implement the proposed filter. Broadside-coupled patches are designed on the top and second layers to realise an ultra-wide passband character, and quarter-wavelength resonators are integrated underneath broadside-coupled patches to realise the desired stopband. The proposed filter is fabricated using multilayer liquid crystal polymer lamination technology. Experiment results are presented to verify predicted results, which show the proposed filter has good performance including compact size, sharp stopband rejection and good passband performance.


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