公开(公告)号：US09379663B1

公开(公告)日：2016-06-28

申请号：US14665201

申请日：2015-03-23

Applicant: Xilinx, Inc.

Inventor： Somnath Kundu ,  Vassili Kireev

IPC: H03B5/12

CPC classification number: H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2200/0074

Abstract: In one example, an oscillator circuit includes: a master oscillator comprising a master LC tank coupled to a master active circuit, the master LC tank including a primary winding of a transformer and a capacitance; a slave oscillator comprising a slave LC tank coupled to a slave active circuit, the slave LC tank including a secondary winding of the transformer and a capacitance; and a first pair of coupling transistors and a second pair of coupling transistors each coupling the master oscillator to the slave oscillator. Gates of the first pair of coupling transistors are coupled to the master oscillator through a switch. Gates of the second pair of coupling transistors are coupled to the master oscillator through respective ninety-degree phase shifters and the switch.

Abstract translation: 在一个示例中，振荡器电路包括：主振荡器，包括耦合到主有源电路的主LC箱，主LC箱包括变压器的初级绕组和电容; 从振荡器，包括耦合到从动电路的从LC液晶盒，从LC液晶盒包括变压器的次级绕组和电容; 以及第一对耦合晶体管和第二对耦合晶体管，每个耦合晶体管将主振荡器耦合到从振荡器。 第一对耦合晶体管的栅极通过开关耦合到主振荡器。 第二对耦合晶体管的栅极通过相应的九十位移相器和开关耦合到主振荡器。