公开(公告)号：US20170040656A1

公开(公告)日：2017-02-09

申请号：US15331080

申请日：2016-10-21

Applicant: COM DEV International Ltd.

Inventor： Qiang Shi ,  Ming Yu

IPC: H01P1/202 ,  H01P1/207

CPC classification number: H01P1/2053 ,  H01P1/202 ,  H01P1/207

Abstract: A microwave filter has a housing defining an inner cavity. A first resonator is positioned in a first portion of the inner cavity. A second resonator is positioned in a second portion of the inner cavity. A third resonator is positioned in a third portion of the inner cavity. The first resonator and the third resonator are cross-coupled via an iris. The second resonator is elongated and is coupled to the first resonator and the third resonator. The resulting microwave filter has a frequency response having a transmission zero in the lower stopband. A high-pass filter is realized without the use of a cross-coupling probe.

Abstract translation: 微波过滤器具有限定内腔的壳体。 第一谐振器定位在内腔的第一部分中。 第二谐振器定位在内腔的第二部分中。 第三谐振器位于内腔的第三部分中。 第一谐振器和第三谐振器通过虹膜交叉耦合。 第二谐振器是细长的并且耦合到第一谐振器和第三谐振器。 所得微波滤波器具有在下阻带中具有传输零点的频率响应。 实现高通滤波器而不使用交叉耦合探头。

公开(公告)号：US20180131063A1

公开(公告)日：2018-05-10

申请号：US15343280

申请日：2016-11-04

Applicant: COM DEV International Ltd.

Inventor： Li Zhu ,  Ming Yu ,  Raafat R. Mansour

IPC: H01P1/20 ,  H01P1/207 ,  H01P5/02

CPC classification number: H01P1/2082 ,  H01P1/2086 ,  H01P7/105

Abstract: A triple-band bandpass filter with at least one cavity resonator. Each cavity resonator has the same three orthogonal resonances modes corresponding to three unique resonance frequencies. The three unique resonance frequencies define the passbands of the filter. The filter has an input probe coupled to an input cavity resonator. The filter has an output probe coupled to an output cavity resonator. The input and output probes are shaped to concurrently couple signal waveforms in each of the resonance modes. Coupling probes that can be used as input or output probes are also provided. An inter-cavity coupling operable to concurrently transmit signal waveforms in each of the resonance modes is also provided. The inter-cavity coupling can be used to transmit signals between adjacent cavity resonators in the filter.