公开(公告)号：US20190187733A1

公开(公告)日：2019-06-20

申请号：US15842193

申请日：2017-12-14

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Paul L. Rodgers ,  Timothy R. LaRocca

IPC: G05F1/445 ,  H03K17/0812

CPC classification number: G05F1/445 ,  H03F1/42 ,  H03F3/193 ,  H03K17/04123 ,  H03K17/08122

Abstract: A high-voltage, high-speed driver circuit that includes a source amplifier having an amplifying FET device with a drain terminal, a gate terminal and a source terminal, where the amplifying FET device receiving a control signal at its gate terminal and outputs an amplified control signal at its drain terminal. The driver circuit also includes an active load having a self-biasing load FET device with a drain terminal, a gate terminal and a source terminal, where the drain terminal of the load FET device is coupled to a power supply, the source terminal of the load FET device is coupled to the drain terminal of the amplifying FET device, and the source and gate terminals of the load FET device are electrically coupled together by a self-biasing line. The active load includes a load resistor provided within the self-biasing line that provides high impedance and low capacitance.

公开(公告)号：US09843301B1

公开(公告)日：2017-12-12

申请号：US15210680

申请日：2016-07-14

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： Paul L. Rodgers ,  Dah-Weih Duan

IPC: H03H7/42 ,  H01P5/10 ,  H01P3/00 ,  H01L23/66 ,  H01P11/00 ,  H01L21/48 ,  H01P1/18

CPC classification number: H01P1/183 ,  H01L23/66 ,  H01L2223/6622 ,  H01L2223/6627 ,  H01L2223/6672 ,  H01P1/184 ,  H01P3/003 ,  H01P5/10 ,  H01P11/003

Abstract: A transformer balun fabricated in silicon and including a series of alternating metal layers and dielectric layers that define first and second outer conductors that are part of a coaxial structure. Each dielectric layer includes a plurality of conductive vias extending through the dielectric layer to provide electrical contact between opposing metal layers, where a top metal layer forms a top wall of each outer conductor and a bottom metal layer forms a bottom wall of each outer conductor and the other metal layers and the dielectric layers define sidewalls of the outer conductors. Inner conductors extends down both of the first and second outer conductors and a first output line is electrically coupled to a sidewall of the first outer conductor and a second output line is electrically coupled to a sidewall of the second outer conductor.