公开(公告)号：US11031662B2

公开(公告)日：2021-06-08

申请号：US16705260

申请日：2019-12-06

Applicant: AAC Technologies Pte. Ltd.

Inventor： Zenan Liu ,  Ya Wang ,  Yongli Chen

IPC: H01P1/203 ,  H03H1/00 ,  H03H7/09

Abstract: The present application provides an LTCC band-pass filter, including a shell and a filtering assembly. The shell includes a top wall and a bottom wall. The filtering assembly includes a first layer, two second layers respectively overlapped on two opposite sides of the first layer, two third layers respectively overlapped on two sides of the two second layers far away from the first layer, and a fourth layer sandwiched between one of the second layers and the third layers. The first layer is served as an inductance L. The second layer is served as a grounding capacitor C. The second layer and the first layer are coupled together to form an LC resonance unit. The third layer is connected with the ground, and is served as a shielding layer of the LTCC band-pass filter.

公开(公告)号：US10930998B2

公开(公告)日：2021-02-23

申请号：US16699155

申请日：2019-11-29

Applicant: AAC Technologies Pte. Ltd.

Inventor： Yongli Chen ,  Zhongyue Wang ,  Yue Liang

IPC: H04B1/40 ,  H04M1/02 ,  H01Q1/24 ,  H01Q5/314 ,  H04W88/06

Abstract: An antenna system is provided. The antenna system has a system grounding unit, a metal frame and a main board. The metal frame is spaced apart from the system grounding unit to form a clearance zone. The metal frame is a first radiator. The antenna system further has a second radiator, a switch, a capacitor and a main matching circuit. The second radiator is located in the clearance zone. The main board has a feeding point. The metal frame has a first connecting part and a second connecting part. An end of the capacitor is connected to the second radiator, and another end of the capacitor is connected to the main matching circuit. The second radiator is connected to the main board via the switch.