Title:
BULK ACOUSTIC RESONATOR AND METHOD FOR DESIGNING SAME, FILTER AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/213401
Kind Code:
A1
Abstract:
A bulk acoustic resonator, an effective region of which has an effective area. In the effective region, a second end point (32') of an input side (31), a first end point (34') of an output side (34), a second end point (35') of the output side (34) and a first end point (31') of the input side (31) are successively connected to each other to define a basic quadrilateral, and the area of the quadrilateral is not greater than the effective area; in a convex polygon, the length of the input side (31) and the length of the output side (34) are within a range from more than 1.5 times the equivalent side length to less than 2.5 times the equivalent side length, and the equivalent side length is the length of sides of a regular pentagon of which the area is equivalent to the effective area; an interior angle (b21) where the second end point (32') of the input side (31) of the convex polygon is located is within a range of greater than 90°C and not greater than 150°C, and the other interior angles (b22, b23, b24, b25, b26) of the convex polygon are within a range of not less than 60° and not greater than 150°C, and an obtuse angle (a3) formed by a basic input side and a basic output side is within a range of not less than 110° and not greater than 170°. The present invention also relates to a method for designing the resonator, a filter and an electronic device.
Inventors:
ZHANG QUANDE (CN)
PANG WEI (CN)
PANG WEI (CN)
Application Number:
PCT/CN2021/088484
Publication Date:
October 28, 2021
Filing Date:
April 20, 2021
Export Citation:
Assignee:
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
International Classes:
H03H9/17; H03H9/58
Foreign References:
| CN111654261A | 2020-09-11 | |||
| CN108649920A | 2018-10-12 | |||
| CN110581695A | 2019-12-17 | |||
| JP2005033262A | 2005-02-03 | |||
| CN107346962A | 2017-11-14 | |||
| CN1431777A | 2003-07-23 | |||
| CN101841313A | 2010-09-22 | |||
| CN107181472A | 2017-09-19 | |||
| US20200076403A1 | 2020-03-05 | |||
| EP1041717B1 | 2006-12-27 |
Attorney, Agent or Firm:
BEIJING JINCHENG TONGDA & NEAL LAW FIRM (CN)
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