Title:
INTEGRATED METHOD AND INTEGRATED STRUCTURE OF CONTROL CIRCUIT AND SURFACE ACOUSTIC WAVE FILTER
Document Type and Number:
WIPO Patent Application WO/2020/134666
Kind Code:
A1
Abstract:
An integrated method and integrated structure of a control circuit and a surface acoustic wave (SAW) filter. The integrated method comprises: providing a substrate, wherein a control circuit is formed on the substrate; forming a cavity (402) on the substrate; providing an SAW resonance sheet, wherein the surface of the SAW resonance sheet is provided with an input electrode and an output electrode; the surface of the SAW resonance sheet facing towards the substrate, such that the SAW resonance sheet is bonded to the substrate and the cavity (402) is closed; and electrically connecting the control circuit to the input electrode and the output electrode. By means of controlling a SAW filter through the control circuit provided on the substrate, the problems of a complicated electrical connection process and large insertion loss caused by the integration of an existing SAW filter, serving as a discrete device, on a PCB can be avoided.
Inventors:
QIN XIAOSHAN (CN)
Application Number:
PCT/CN2019/117791
Publication Date:
July 02, 2020
Filing Date:
November 13, 2019
Export Citation:
Assignee:
NINGBO SEMICONDUCTOR INT CORPORATION SHANGHAI BRANCH (CN)
International Classes:
H03H9/64; H03H9/02; H03H9/54
Foreign References:
| CN1599060A | 2005-03-23 | |||
| CN205945672U | 2017-02-08 | |||
| CN1346539A | 2002-04-24 | |||
| CN107342746A | 2017-11-10 | |||
| CN106888001A | 2017-06-23 | |||
| US20010001293A1 | 2001-05-17 |
Attorney, Agent or Firm:
BEIJING SICHUANG DACHENG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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