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A bulk acoustic wave filter chip

A bulk acoustic wave filter and chip technology, applied in the field of filters, can solve problems such as low heat dissipation efficiency and affecting work performance, and achieve good absorption, improved performance and service life, and large heat dissipation effects

Active Publication Date: 2022-06-21
深圳新声半导体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the natural heat dissipation efficiency of BAW is not high only through its shell 100, which affects its working performance

Method used

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  • A bulk acoustic wave filter chip
  • A bulk acoustic wave filter chip
  • A bulk acoustic wave filter chip

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Embodiment Construction

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

[0027] It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional rel...

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PUM

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Abstract

A bulk acoustic wave filter chip of the present invention comprises: a bulk acoustic wave filter chip body, pads, and a heat dissipation shell, the bulk acoustic wave filter chip body is arranged at the bottom of the heat dissipation shell, and the bulk acoustic wave filter The pad is provided on the bottom of the chip body. The body of the bulk acoustic wave filter chip is connected to other circuits through the pads. Due to the coating of the heat dissipation shell on the chip body of the bulk acoustic wave filter, the impact of external impurities on the chip body of the bulk acoustic wave filter is reduced. At the same time, it can better absorb the heat generated when the bulk acoustic wave filter body is working, and dissipate heat through a larger surface area, thereby improving performance and service life.

Description

technical field [0001] The invention belongs to the technical field of filters, and in particular relates to a bulk acoustic wave filter chip. Background technique [0002] With the advent of communication technology, the filter is used as a frequency selection device, which works by allowing signals of a specific frequency to pass and attenuating and filtering signals of other frequencies, thereby eliminating interference. [0003] Today, as the operating frequency bands of electronic equipment continue to increase, filter technology is also constantly evolving to cope with maintaining high performance at higher frequency bands and wider bandwidths. The acoustic filter is to filter the frequency in the conversion process of "electricity, sound and electricity", and there are two ways for sound waves to propagate in solids, one is BAW (bulk acoustic wave filter), that is, longitudinal waves or transverse waves. The form is transmitted inside the solid, and the second is SAW...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H9/05H03H9/08H03H9/10H03H9/54
CPCH03H9/0504H03H9/08H03H9/1007H03H9/54
Inventor 不公告发明人
Owner 深圳新声半导体有限公司