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Dielectric resonator and radio frequency filter

A dielectric resonator and dielectric body technology, applied in the field of resonators, can solve the problems of damage to ceramic discs, achieve the effects of reduced volume, low manufacturing cost, and increased equivalent electrical length

Active Publication Date: 2021-03-26
ALCATEL LUCENT SHANGHAI BELL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the temperature of the filter's environment changes, causing thermal expansion and contraction, the ceramic disc may be damaged due to the stress exerted by the conductor tube

Method used

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  • Dielectric resonator and radio frequency filter
  • Dielectric resonator and radio frequency filter
  • Dielectric resonator and radio frequency filter

Examples

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Embodiment Construction

[0051] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0052] As used herein, the term "comprise" and its variants mean open inclusion, ie "including but not limited to". The term "or" means "and / or" unless otherwise stated. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one further embodiment". The terms "first", "second", etc. may refer to di...

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Abstract

The embodiment of the invention relates to a dielectric resonator and a radio frequency filter. The dielectric resonator comprises a metal cavity and a dielectric body. An annular step is arranged inthe metal cavity. The dielectric body is disposed within the metal cavity and includes a top surface, a bottom surface opposite the top surface, and a side surface between the top surface and the bottom surface. The peripheral portion of the bottom surface of the dielectric body is assembled on the top surface of the annular step. By installing the dielectric body on the annular step, the electricfield can be bent in the dielectric body, so that the equivalent electric length of the electric field in the dielectric body is increased. The result of the equivalent electrical length extension isa reduction in physical dimensions. Thus, the size of the dielectric resonator can be reduced, and the dielectric resonator can be applied to 5G and large-scale MIMO base stations. In addition, the dielectric resonator is simple in structure, low in manufacturing cost and reliable in performance.

Description

technical field [0001] Embodiments of the present disclosure generally relate to the field of resonators, and more particularly, to a dielectric resonator and a radio frequency filter. Background technique [0002] With the development of wireless communication systems, radio frequency (RF) filters have become a very critical part of base stations in wireless communication systems. In base stations for 5G and massive multiple-input multiple-output (MIMO) systems, the requirements for RF filters are increasing. On the one hand, RF filters are required to be smaller in size for 5G and massive MIMO base station applications. 5G and massive MIMO products typically include frequency bands from 600MHz to 40GHz. In the frequency band below 6GHz, the filter volume is the bottleneck of the whole base station. In some cases, the filter volume even accounts for about 50% of the entire base station. On the other hand, in 5G and massive MIMO base stations, RF filters are required to ...

Claims

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Application Information

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IPC IPC(8): H01P7/06H01P7/10H01P1/20
CPCH01P7/06H01P7/10H01P1/2002
Inventor 贾守礼白云鹏陆项晖
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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