Invention Grant
- Patent Title: Acoustic-wave ladder filter having impedance element and diplexer based thereon
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Application No.: US17524939Application Date: 2021-11-12
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Publication No.: US12113516B2Publication Date: 2024-10-08
- Inventor: Chih-Chung Hsiao , Fu-Kuo Yu , Shih-Meng Lin
- Applicant: TAI-SAW Technology Co., Ltd.
- Applicant Address: TW Taoyuan
- Assignee: TAI-SAW TECHNOLOGY CO., LTD.
- Current Assignee: TAI-SAW TECHNOLOGY CO., LTD.
- Current Assignee Address: TW Taoyuan
- Agency: Volpe Koenig
- Priority: TW 9139800 2020.11.13
- Main IPC: H03H9/64
- IPC: H03H9/64 ; H03H9/02

Abstract:
An acoustic-wave ladder filter has a first port, a second port and a ground terminal, and includes a series resonator and a shunt circuit. The series resonator is coupled to and disposed between the first and the second ports in series. The shunt circuit is coupled to and disposed between the series resonator and the grounding terminal, and includes a shunt resonator and a functional circuit. The functional circuit is connected in series with the shunt resonator. The functional circuit includes a resistor having a resistance value. The resistance value is greater than 5 Ohms and is smaller than 50 ohms. The functional circuit may further have an inductance.
Public/Granted literature
- US20220158624A1 ACOUSTIC-WAVE LADDER FILTER HAVING IMPEDANCE ELEMENT AND DIPLEXER BASED THEREON Public/Granted day:2022-05-19
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