US 12,244,284 B2
Tunable filter and method for manufacturing the same
Guochen Du, Beijing (CN); Zhenyu Xie, Beijing (CN); Shan Chang, Beijing (CN); and Chiachiang Lin, Beijing (CN)
Assigned to BEIJING BOE SENSOR TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/907,295
Filed by Beijing BOE Sensor Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Oct. 28, 2021, PCT No. PCT/CN2021/127136
§ 371(c)(1), (2) Date Sep. 26, 2022,
PCT Pub. No. WO2022/222405, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110439246.9 (CN), filed on Apr. 23, 2021.
Prior Publication US 2024/0213946 A1, Jun. 27, 2024
Int. Cl. H03H 7/01 (2006.01)
CPC H03H 7/0153 (2013.01) [H03H 7/0115 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tunable filter, comprising:
a base substrate having a first surface and a second surface opposite to each other in a thickness direction of the base substrate; wherein the base substrate is provided with first connecting vias extending through the base substrate along the thickness direction of the base substrate; and
at least one inductor and at least one capacitor on the base substrate; wherein each of the at least one inductor comprises first sub-structures on the first surface, second sub-structures on the second surface, and first connection electrodes in the first connecting vias, and the first sub-structures are connected to the second sub-structures by the first connection electrodes, respectively;
wherein the at least one capacitor comprises a first capacitor and a second capacitor; the at least one inductor comprises one inductor; and
a first lead terminal of the inductor is connected to a first signal terminal, and a second lead terminal of the inductor is connected to a second signal terminal and a first plate of the first capacitor; a second plate of the first capacitor is connected to a second plate of the second capacitor and a first bias voltage terminal; and a first plate of the second capacitor is connected to a second bias voltage terminal.