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首页> 外文会议>URSI General Assembly and Scientific Symposium >Compact cross-coupled coplanar-waveguide bandpass filters without bondwires
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Compact cross-coupled coplanar-waveguide bandpass filters without bondwires

机译：无键机的紧凑型交叉耦合共耦合共栅 - 波导带通滤波器

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Two types of compact cross-coupled coplanar-waveguide (CPW) bandpass filters, which are the dual of each other, are proposed. They are based on the three-line coupled CPW along with lumped-element K- or J-inverters. Due to the symmetrical filter structure, no bondwires or airbridges are required for implementation of the proposed CPW bandpass filters, which greatly simplifies the fabrication process. Their filter sizes are about 50% of the conventional parallel-coupled filter with no spurious passbands at even harmonics. In addition, by introducing the cross-coupling effect, two transmission zeros at the upper and lower stopbands may be created, which improve the filter selectivity. Simple equivalent-circuit models are also established as effective design tools. Specifically, two 4th-order CPW bandpass filters centered at about 2GHz implemented on a FR4 substrate are demonstrated.
机译：提出了两种类型的紧凑型交叉耦合共耦合 - 波导（CPW）带通滤波器，其是彼此的双重滤波器。它们基于三线耦合的CPW以及集成元件k或J-逆变器。由于对称的过滤器结构，不需要键合或空气桥来实现所提出的CPW带通滤波器，这极大简化了制造过程。它们的滤波器尺寸约为传统的并联滤波器的50％，甚至没有虚假通带。另外，通过引入交叉耦合效果，可以创建上部和下部阻带的两个传输零，从而提高过滤器选择性。简单的等效电路模型也是有效的设计工具。具体地，对在FR4基板上实现的大约2GHz处的两个4个4阶CPW带通滤波器进行说明。

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