Huawei Technologies Co., Limited

Xiaofeng Zhang

Dan Liang

Zheng Cui

Zhiyu Liu

Yantao Li

Guoshuai Zhao

This application relates to the field of communications component technologies, and provides a band-stop filter and an electronic device. The band-stop filter includes: a waveguide transmission line, configured to transmit electromagnetic waves; and a plurality of dielectric resonance units, sequentially arranged along an extension track of the waveguide transmission line, and configured to be coupled to the waveguide transmission line, where the dielectric resonance units each include at least one dielectric resonator; the dielectric resonator includes a first dielectric block and a first conductive layer covering an outer surface of the first dielectric block; and a first surface of the first dielectric block has a blind hole, and the first conductive layer covers an inner surface of the blind hole; where a dielectric constant of a material that forms the first dielectric block is greater than 1.

Band-stop filter and electronic device

The present disclosure relates to dielectric duplexers. One example dielectric duplexer includes a dielectric body, where an input/output structure, a tap, a first resonance structure, and a second resonance structure are provided on surfaces of the dielectric body. The tap and the input/output structure are provided on different surfaces of the dielectric body. The tap and the input/output structure are located between the first resonance structure and the second resonance structure. A first resonator consists of the first resonance structure and the dielectric body around the first resonance structure, and a second resonator consists of the second resonance structure and the dielectric body around the second resonance structure. A conducting layer covers a surface of the input/output structure, the tap, the first resonance structure, and the second resonance structure, and the conducting layer covers the surface of the dielectric body except a region around the input/output structure.

Dielectric duplexer

A dielectric filter, a duplexer, and a communications device are provided. The dielectric filter includes a dielectric body, and a wideband filtering structure and a narrowband filtering structure that are disposed in the dielectric body. The wideband filtering structure includes a groove disposed on a first surface of the dielectric body and configured to adjust a frequency position of a passband of the wideband filtering structure; and at least one first resonator including a through hole penetrating the bottom of the groove and a second surface of the dielectric body; and an open loop located on a bottom surface of the groove and is disposed around an opening of the through hole. The narrowband filtering structure includes at least one second resonator including a blind hole disposed on the second surface of the dielectric body. The first surface and the second surface of the dielectric body are disposed oppositely.

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Kista, Sweden

Xiaofeng Zhang