一篇论文的标题，尽量翻的简明、准确，谢谢
还有一句 会的也顺便帮下吧
To reduce the circuit size,diplexers based on the slow-wave open-loop resonators with high-impedance meander lines , the folded coupled-line resonators , the miniaturized open-loop resonators [15],SIRs [16], and spiral inductor resonators have been roposed.
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