公开(公告)号：US20180034487A1

公开(公告)日：2018-02-01

申请号：US15223901

申请日：2016-07-29

Applicant: Keysight Technologies, Inc.

Inventor： Dietrich W. Vook

IPC: H04B1/04

CPC classification number: H04B1/0475

Abstract: A differential transmission assembly includes two metal prisms, a ground substrate, and a resistive sheet. The two metal prisms are driven differentially. Each metal prism extends along parallel lines with a space therebetween in a common direction, coplanar in a first plane, and contributing to formation of a three-dimensional electromagnetic field. The ground substrate extends in the common direction, in a second plane parallel to the first plane. The resistive sheet is disposed in a third plane aligned to be substantially perpendicular to an electric field component of a first mode of the three-dimensional electromagnetic field, and to be parallel to an electric field component of a second mode of the three-dimensional electromagnetic field.

公开(公告)号：US11994617B2

公开(公告)日：2024-05-28

申请号：US17349678

申请日：2021-06-16

Applicant: Keysight Technologies, Inc.

Inventor： Dietrich W. Vook ,  Todd Steven Marshall ,  Jefferson B. Burch ,  Gregory S. Lee

IPC: G01S7/40 ,  G01S13/00

CPC classification number: G01S7/4056 ,  G01S7/40 ,  G01S7/4069

Abstract: An apparatus is for generating an emulated radar reflection signal of a target moving at a relative velocity. The apparatus includes a radar detector, an emulation transmitter, and a processor. The radar detector is configured to detect radar chirps emitted by a device under test (DUT), where the chirps are emitted at random time intervals. The emulation transmitter is configured to generate emulated radar reflection signals of the target being emulated. The processor is configured to generate control signals at intervals corresponding to the random time intervals at which the radar chirps are emitted by the DUT, where each control signal controls the emulation transmitter to generate a radar reflection signal. A relative phase of the control signals is adjusted according to a duration of each of the random time intervals between successive chirps and a magnitude and sign of the relative velocity of the target.

公开(公告)号：US20220179044A1

公开(公告)日：2022-06-09

申请号：US17349678

申请日：2021-06-16

Applicant: Keysight Technologies, Inc.

Inventor： Dietrich W. Vook ,  Todd Steven Marshall ,  Jefferson B. Burch ,  Gregory S. Lee

IPC: G01S7/40

Abstract: An apparatus is for generating an emulated radar reflection signal of a target moving at a relative velocity. The apparatus includes a radar detector, an emulation transmitter, and a processor. The radar detector is configured to detect radar chirps emitted by a device under test (DUT), where the chirps are emitted at random time intervals. The emulation transmitter is configured to generate emulated radar reflection signals of the target being emulated. The processor is configured to generate control signals at intervals corresponding to the random time intervals at which the radar chirps are emitted by the DUT, where each control signal controls the emulation transmitter to generate a radar reflection signal. A relative phase of the control signals is adjusted according to a duration of each of the random time intervals between successive chirps and a magnitude and sign of the relative velocity of the target.

公开(公告)号：US10001694B1

公开(公告)日：2018-06-19

申请号：US14541014

申请日：2014-11-13

Applicant: Keysight Technologies, Inc.

Inventor： Gregory S. Lee ,  Christopher Coleman ,  Dietrich W. Vook ,  Thomas S. Low

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/21

CPC classification number: G02F1/2255 ,  G02F2001/212 ,  G02F2201/12

Abstract: An optical modulator that is adapted to modulate a light signal at very high RF frequencies and provide the modulating RF signal to equipment separate from the modulator is disclosed. The modulator includes a Mach-Zehnder Modulator in which light loses due to the crossing of the RF waveguide conductors and the optical waveguides are reduced. In addition, problems arising from asynchrony between the RF signals and the optical signals are reduced. The modulator also reduces signal losses due to resonances in the modulator. The modulator can be configured to be used in test probes that require a compact configuration that is adapted to designs having multiple test probes that are proximate to each other.

公开(公告)号：US09900032B1

公开(公告)日：2018-02-20

申请号：US15223901

申请日：2016-07-29

Applicant: Keysight Technologies, Inc.

Inventor： Dietrich W. Vook

IPC: H04B1/00 ,  H04B1/04

CPC classification number: H04B1/0475

Abstract: A differential transmission assembly includes two metal prisms, a ground substrate, and a resistive sheet. The two metal prisms are driven differentially. Each metal prism extends along parallel lines with a space therebetween in a common direction, coplanar in a first plane, and contributing to formation of a three-dimensional electromagnetic field. The ground substrate extends in the common direction, in a second plane parallel to the first plane. The resistive sheet is disposed in a third plane aligned to be substantially perpendicular to an electric field component of a first mode of the three-dimensional electromagnetic field, and to be parallel to an electric field component of a second mode of the three-dimensional electromagnetic field.

公开(公告)号：US20180034437A1

公开(公告)日：2018-02-01

申请号：US15223910

申请日：2016-07-29

Applicant: Keysight Technologies, Inc.

Inventor： Todd Steven Marshall ,  Dietrich W. Vook ,  Douglas Baney

IPC: H03H7/42 ,  H01P3/08

CPC classification number: H03H7/427 ,  H01P3/088 ,  H05K1/02 ,  H05K1/0216 ,  H05K1/0234 ,  H05K1/0245 ,  H05K1/025

Abstract: A differential transmission line includes a sheath, a first conductive structure, a second conductive structure, and a resistive layer. The first conductive structure is disposed along the differential transmission line and within the sheath, and contributes to formation of a three-dimensional electromagnetic field. The second conductive structure is disposed along the differential transmission line and within the sheath, and contributes to formation of the three-dimensional electromagnetic field. The resistive layer is aligned to be substantially perpendicular to an electric field component of a first mode of the three-dimensional electromagnetic field, and to provide absorption of an electric field component of a second mode of the three-dimensional electromagnetic field.