| 发明名称 |
VARIABLE FILTER CIRCUIT AND RADIO COMMUNICATION DEVICE |
| 摘要 |
A variable filter circuit (10) includes a parallel arm (11) connected between a port (P3) and node (A), a series arm (12) including a resonator (Re_s1) connected in series between a port (P1) and node (A), and a series arm (13) including a resonator (Re_s2) connected in series between a port (P2) and node (A). The parallel arm (11) includes a first inductor (Lp1). The series arms (12, 13) include variable capacitors (Cp_s1, Cp_s2) connected in parallel to the resonators (Re_s1, Re_s2). |
| 申请公布号 |
US2016344092(A1) |
申请公布日期 |
2016.11.24 |
| 申请号 |
US201615230717 |
申请日期 |
2016.08.08 |
| 申请人 |
Murata Manufacturing Co., Ltd. |
发明人 |
OGAMI Takashi |
| 分类号 |
H01Q1/24;H03H7/01;H01Q1/48;H03H9/54 |
主分类号 |
H01Q1/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A variable filter circuit comprising:
a first series arm including a first resonator connected in series between a first input/output terminal and a node; a second series arm including a second resonator connected in series between a second input/output terminal and the node;and a parallel arm connected between the node and a ground connection terminal,
wherein the parallel arm includes a first inductor connected in series between the node and the ground connection terminal, and at least one of the first and second series arms includes a variable capacitor connected in parallel to the first or second resonator. |
| 地址 |
Kyoto JP |
