公开(公告)号：US10243640B2

公开(公告)日：2019-03-26

申请号：US15454261

申请日：2017-03-09

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kenji Miyanaga ,  Yukio Okazaki

IPC: G01S7/40 ,  H01Q3/26 ,  H04B1/04 ,  H04B7/06 ,  G01S13/02

Abstract: Provided is a phased array transmission device including: a plurality of transmission branches, each being provided with a phase shift unit that applies a phase rotation to a baseband signal, a DC offset correction unit that adds a first correction value to an output signal of the phase shift unit, and a mixer that subjects an output signal of the DC offset correction unit to a frequency conversion to a high frequency band; and a correction control unit that calculates a second correction value with which a carrier leak component included in an output signal of the mixer is minimized, for each of a plurality of candidates for a phase rotation amount that is set for the phase rotation, and determines the first correction value on the basis of the second correction value.

公开(公告)号：US09654063B2

公开(公告)日：2017-05-16

申请号：US14885671

申请日：2015-10-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukio Okazaki ,  Masakatsu Maeda ,  Shigeki Nakamura ,  Akinori Daimo

IPC: H03F3/04 ,  H03F3/193 ,  H03F1/02 ,  H03F3/24 ,  H03F1/30

CPC classification number: H03F3/193 ,  H03F1/0261 ,  H03F1/301 ,  H03F3/245 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/451 ,  H03F2200/453 ,  H03F2200/541 ,  H03F2200/555

Abstract: A bias circuit comprises: a first circuit that comprises a first resistor and a decoupling capacitor; a bias voltage generation circuit that comprises a first transistor being connected to the first circuit; one or more switches; a first replica circuit comprising a second circuit and a second transistor, the second circuit comprising a second resistor and a capacitor, the second transistor being connected to the second circuit; a second replica circuit comprising a third transistor; a comparator that makes a comparison between a pseudo-bias voltage and a reference voltage; and a control circuit that controls the one or more switches on the basis of the comparison result to reduce the amount of the current flowing through the first transistor.

公开(公告)号：US09614664B2

公开(公告)日：2017-04-04

申请号：US15156333

申请日：2016-05-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tadashi Morita ,  Yukio Okazaki

IPC: H04L7/06 ,  H04L7/00

CPC classification number: H04L7/06 ,  H04B7/0613 ,  H04L7/0016 ,  H04L27/34

Abstract: A wireless communication apparatus includes multiple antenna devices, a signal generator, a phase shifter, a phase controller, and a quadrature error corrector (phase error corrector and amplitude error corrector). The signal generating circuitry, in operation, generates an IQ signal having an I signal and a Q signal. The plurality of phase shifting circuitry provided for each of the plurality of antenna devices, in operation, generates a plurality of combination signals by combining the I signal and the Q signal based on a predetermined combining scheme. The phase controlling circuitry, in operation, controls the predetermined combining scheme in each of the plurality of phase shifting circuitry. The quadrature error correcting circuitry, in operation, corrects at least one of amplitude combining scheme and phase combining scheme of the predetermined combining scheme in a correction of the predetermined combining scheme.

公开(公告)号：US10761201B2

公开(公告)日：2020-09-01

申请号：US15834791

申请日：2017-12-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukio Okazaki ,  Hirofumi Nishimura ,  Asako Hamada

IPC: G01S13/42 ,  G01S13/04 ,  G08G1/16 ,  G01S13/931 ,  G01S13/524

Abstract: An object detection device includes: a classifier that receives, from a radar device that transmits a transmission wave and receives a reflected wave that is the transmission wave reflected by an object around a subject vehicle, detection result information indicative of an intensity, an azimuth, and a Doppler velocity obtained from a Doppler frequency shift of the reflected wave, and determines whether the detection result information is first detection result information corresponding to a moving object or second detection result information corresponding to a still object; a calculator that calculates distances from the radar device to reflection points of the moving object on the basis of the first detection result information; and an output that supplies, to a predetermined device, first reflection point information indicating the distances of the reflection points and azimuths of the reflection points based on the radar device.