Transverse electromagnetic mode dielectric filter, radio frequency module and base station

A dielectric filter and transverse electromagnetic mode technology, applied in the field of communications, can solve the problems of poor near-end suppression performance, limited application scenarios, and inability to apply filters, and achieve good near-end suppression performance and widespread use.

Active Publication Date: 2015-03-25
SHANGHAI HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the near-end rejection performance of the transverse electromagnetic mode dielectric filter provided by the existing technology is not good, so it cannot be a

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  • Transverse electromagnetic mode dielectric filter, radio frequency module and base station
  • Transverse electromagnetic mode dielectric filter, radio frequency module and base station
  • Transverse electromagnetic mode dielectric filter, radio frequency module and base station

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[0021] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] The filter is an essential component in equipment such as base stations or radio frequency terminals. Due to its advantages in cost and size, dielectric filters can be used in locations such as the receiving link of the base station to filter radio frequency signals. Transverse electromagnetic mode dielectric filter is a widely used dielectric filter.

[0023] However, due to the poor radio frequency performance of transverse electromagnetic mode dielectric mode filters, they cannot be used in locations with higher filter performance requirements, such as the front end of the radio frequency module, that is, between the transmitting antenna and the power amplifier. Performance indicators include insertion loss, suppression, intermodulat...

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Abstract

The embodiment of the invention provides a transverse electromagnetic mode dielectric filter. A near end suppression structure is arranged inside the filter. By flexibly designing the shape, position and size of the near end suppression structure, the transmission zero or zero cavity function is achieved, radio frequency signals at high frequency end or near frequency end outside a filter transmission band are suppressed, and the good near end suppression performance is provided. The embodiment of the invention further provides a radio frequency module and a base station.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and in particular to a transverse electromagnetic mode dielectric filter, a radio frequency module and a base station. Background technique [0002] With the development of wireless communication technology, wireless communication equipment is increasingly pursuing miniaturization and low insertion loss. Compared with the traditional metal cavity filter, the dielectric filter has the advantages of small size, small insertion loss, high power withstand, and low cost. Transverse electromagnetic mode (TEM, transverse electromagnetic mode) dielectric filter is an important type of dielectric filter, which can be applied in wireless base stations, radio frequency terminals, radio frequency or microwave transceiver components and other equipment. [0003] However, the near-end suppression performance of the transverse electromagnetic mode dielectric filter provided by t...

Claims

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Application Information

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IPC IPC(8): H01P1/201H04W88/08
CPCH01P1/2056
Inventor 古健张辉董利芳
Owner SHANGHAI HUAWEI TECH CO LTD
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