【摘要】 本工作设计了一种基于超材料的小型化多频段微带滤波器。基于超材料的相位补偿原理,通过将方块型超材料单元结构加载于接地板,实现微带滤波器的小型化设计,滤波器整体尺寸仅为25 mm×25 mm（0.38λ₀×0.38λ₀,λ₀是低频段的导波波长）。通过对四开口型谐振环（Split ring resonator,SRR）微带线馈电,获得多频段滤波器设计。测试结果表明,滤波器的谐振点为2.4 GHz、3.4 GHz和5.5 GHz,工作频带内插入损耗最大值为0.85 dB,具有小型化、多频段、低损耗的特点。更多还原

【Abstract】 Acompact multiband microstrip filter based on metamaterial is designed in this work. The metamaterial filter has a compact size of 25 mm × 25 mm（ 0.38λ₀×0.38λ₀,λ₀ is the guided wavelength of lower band） and miniaturization is realized by using the phase compensation principle of metamaterial. Multiband characteristic is obtained by using four-SRRs. The measured results show that the metamaterial filter works at 2. 4 GHz,3.4 GHz and 5.5 GHz,the insertion loss maximum is 0.85 dB in the band. Therefore,the metamaterial filter has the characteristics of miniaturization,multiband and low loss.更多还原