公开(公告)号：US20140049330A1

公开(公告)日：2014-02-20

申请号：US13963751

申请日：2013-08-09

Applicant: Sequans Communications Limited

Inventor： Peter Martin

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/0266 ,  H03J3/20 ,  H03J2200/10

Abstract: An integrated circuit device has an LC tank circuit for frequency determination, and a switched capacitor circuit for tuning the resonant frequency of the LC tank. The switched capacitor circuit has plural sets of parallel branches, each set comprising a first branch and a second branch, the first and second branches each connecting between a first node and a second node, each branch containing a respective capacitor in series with a switch, the switched capacitor circuit being configured such that, in use, the switch of the first branch is on when the switch of the second branch is off and vice versa.

Abstract translation: 集成电路装置具有用于频率确定的LC槽电路和用于调谐LC箱的谐振频率的开关电容器电路。 开关电容电路具有多组平行分支，每组包括第一分支和第二分支，第一和第二分支各自连接在第一节点和第二节点之间，每个分支包含与开关串联的相应电容器， 开关电容器电路被配置为使得在使用中，当第二分支的开关断开时第一分支的开关接通，反之亦然。