公开(公告)号：US20210328343A1

公开(公告)日：2021-10-21

申请号：US17319029

申请日：2021-05-12

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Alberto Valdes Garcia ,  Bodhisatwa Sadhu ,  Yahya Mesgarpour Tousi

IPC: H01Q3/26 ,  G01R29/10 ,  H04B1/10 ,  H04B17/12

Abstract: An apparatus for calibrating a multi-antenna system includes an unmanned aerial vehicle (UAV). The UAV includes one or more millimeter-wave (mm-wave) single channel radios that can transmit and receive a mm-wave signal to or from a multi-antenna system under test; at least one directional antenna connected to the one or more radios; sensors that determine a position of the UAV; an omni-directional mobile or Wi-Fi transceiver that communicates with an operator; and a digital microprocessor unit connected to the one or more mm-wave single channel radios, the sensors, and the omni-directional mobile or Wi-Fi transceiver. The digital microprocessor unit can control motion of the UAV and analyze signals received from the one or more min-wave single channel radios and the at least one directional antenna using position information received from the sensors.

公开(公告)号：US10973062B2

公开(公告)日：2021-04-06

申请号：US16550849

申请日：2019-08-26

Applicant: International Business Machines Corporation

Inventor： Bodhisatwa Sadhu ,  Alberto Valdes Garcia ,  Supriyo Chakraborty

IPC: H04W76/10 ,  H04W72/08 ,  H04W72/04 ,  G06N5/04 ,  H04W4/02 ,  H04W4/33 ,  G06N20/00 ,  H04W16/28

Abstract: Generating an environment information map from a wireless communication system having directional communication capabilities. A plurality of features are extracted and logged resultant from a communication link attempt at multiple beam directions and training at least one machine learning model based on the plurality of extracted features from the first beam direction and the at least one additional beam directions to infer an environment information map of the area between the first transmitter and the receiver.

公开(公告)号：US10958665B2

公开(公告)日：2021-03-23

申请号：US16563013

申请日：2019-09-06

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Jean-Olivier Plouchart ,  Wendy Chong ,  Alberto Valdes Garcia ,  Petros Zerfos

IPC: H04L29/06 ,  H04L29/08 ,  H04W12/06 ,  H04W12/00

Abstract: Methods and systems for tag-based identification include receiving a set of parameters at a user device from a remote server. A counterfeit-proof identification tag is read using a sensor in the user device using the set of parameters. Features of the counterfeit-proof identification tag are extracted in accordance with a feature extraction function, using a processor, to generate a tag bit sequence. A challenge function is applied to the extracted features to generate a result. The result is transmitted to the remote server to authenticate the counterfeit-proof identification tag. The counterfeit-proof identification tag is authenticated with a tag database at the remote server.

公开(公告)号：US20200266669A1

公开(公告)日：2020-08-20

申请号：US16277280

申请日：2019-02-15

Applicant: International Business Machines Corporation

Inventor： Arun Paidimarri ,  Bodhisatwa Sadhu ,  Duixian Liu ,  Alberto Valdes Garcia

IPC: H02J50/23 ,  H02J50/27 ,  G06K19/07 ,  G06K7/00

Abstract: A radio frequency identification (RFID) system may include a plurality of RFID readers and RFID tags. A RFID reader may include an antenna configured to operate at a first frequency and transmit a first beam of a first beam width to the plurality of RFID tags. The RFID antenna may further include an antenna array including a plurality of antennas configured to operate at a second frequency. The antenna array may be configured to transmit a second beam of a second beam width to the plurality of RFID tags. The RFID reader may receive backscatter signals and tag data from the plurality of RFID tags. The RFID reader may locate the plurality of RFID tags based on the backscatter signals and a direction of the second beam. The RFID reader may generate a 3D map of the tag data based on the locations of the plurality of RFID tags.

公开(公告)号：US10693507B2

公开(公告)日：2020-06-23

申请号：US15842589

申请日：2017-12-14

Applicant: International Business Machines Corporation

Inventor： Tolga Dinc ,  Mark A. Ferriss ,  Daniel Joseph Friedman ,  Wooram Lee ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

IPC: H04B1/00 ,  G01S13/34 ,  G01S7/03 ,  H03D7/14 ,  G01S13/28 ,  G01S7/35 ,  G01S7/282 ,  G01S13/10 ,  G01S13/32 ,  G01S13/02 ,  G01S13/76 ,  H03F3/20

Abstract: Techniques that facilitate reconfigurable transmission of a radar frequency signal are provided. In one example, a system includes a signal generator and a power modulator. The signal generator provides a radar waveform signal from a set of radar waveform signals. The power modulator divides a local oscillator signal associated with a first frequency and a first amplitude into a first local oscillator signal and a second local oscillator signal. The power modulator also generates a radio frequency signal associated with a second frequency and a second amplitude based on the radar waveform signal, the first local oscillator signal and the second local oscillator signal.

公开(公告)号：US10594019B2

公开(公告)日：2020-03-17

申请号：US15368600

申请日：2016-12-03

Applicant: International Business Machines Corporation ,  Ericsson AB

Inventor： Christian W. Baks ,  Daniel J. Friedman ,  Xiaoxiong Gu ,  Duixian Liu ,  Alberto Valdes Garcia ,  Joakim Hallin ,  Ola Ragnar Tageman

IPC: H01Q1/24 ,  H01Q1/22 ,  H01Q9/04 ,  H01Q21/06 ,  H01Q1/38 ,  H01Q1/48 ,  H01Q1/52 ,  H01Q21/24

Abstract: Antenna package structures are provided to implement wireless communications packages. For example, an antenna package includes multilayer package substrate, a planar antenna array, antenna feed lines, and resistive transmission lines. The planar antenna array includes an array of active antenna elements and dummy antenna elements surrounding the array of active antenna elements. Each active antenna element is coupled to a corresponding one of the antenna feed lines, and each dummy antenna element is coupled to a corresponding one of the resistive transmission lines. Each resistive transmission line extends through the multilayer package substrate and is terminated in a same metallization layer of the multilayer package substrate.

公开(公告)号：US10534414B2

公开(公告)日：2020-01-14

申请号：US14620777

申请日：2015-02-12

Applicant: International Business Machines Corporation

Inventor： Shahrokh Daijavad ,  Alberto Valdes Garcia ,  Dinesh C Verma ,  Bodhisatwa Sadhu ,  Kai Schleupen

IPC: G06F1/26 ,  G06F1/16 ,  G06F1/3203

Abstract: A portable computing system includes a portable computing device consisting essentially of a logical processor, a memory in communication with the logical processor with operating system software, a high speed, secure wireless communication module in communication with the logical processor, an integrated power source suitable to provide all power needs of the portable computing device and an integrated electric power generation mechanism in communication with the integrated power source to recharge the integrated power source. In addition a visual display is provided that has a power supply separate from the integrated power source of the portable computing device and a complementary wireless communication module, the portable visual display in communication with the high speed, secure wireless communication module through the complementary wireless communication module. The portable computing device and the visual display do not share a physical connection.

公开(公告)号：US10381730B2

公开(公告)日：2019-08-13

申请号：US15817152

申请日：2017-11-17

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Xiaoxiong Gu ,  Duixian Liu ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

IPC: H04B1/16 ,  H01Q9/04 ,  H01Q1/24 ,  H01Q1/48 ,  H01Q21/08 ,  H04B1/04

Abstract: A millimeter-wave (MMW) communication system may include an antenna array structure operating within a MMW band, having both a first antenna coupling point and a second antenna coupling point, whereby the first and the second location of the antenna coupling points are within a coplanar surface on which the antenna array structure is formed. The system may further include a first MMW transmitter that couples a first data modulated MMW signal to the first antenna coupling point and a second MMW transmitter that couples a second data modulated MMW signal to the second antenna coupling point. Coupling the first data modulated MMW signal to the first antenna coupling point generates a first MMW radio signal transmitted at a first propagation direction and coupling the second data modulated MMW signal to the second antenna coupling point generates a second MMW radio signal transmitted at a second propagation direction.

公开(公告)号：US10326432B2

公开(公告)日：2019-06-18

申请号：US15821743

申请日：2017-11-22

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Wooram Lee ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

IPC: H03B19/00 ,  H03K5/00 ,  H03K7/08 ,  H03K5/15

Abstract: A method and system of providing harmonic frequency multiplication are provided. An input signal having a frequency f, is received by a programmable timing circuit. A signal that is in phase with the input signal, is provided at the first output of the programmable timing circuit. A time delayed version of the input signal, having the frequency f, is provided at the second output of the programmable timing circuit. A signal having the frequency f, is provided at the output of a first buffer. A duty cycled controlled signal having the frequency f, is provided at the output of the second buffer. A frequency nf, where n is a positive integer, is provided at the output of the multiplier. A higher-order frequency multiplied signal based on the frequencies f and nf, is provided at the output of a mixer.

公开(公告)号：US20180212580A1

公开(公告)日：2018-07-26

申请号：US15926256

申请日：2018-03-20

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： John F. Bulzacchelli ,  Bodhisatwa Sadhu ,  Alberto Valdes Garcia

IPC: H03G3/30 ,  H03F3/45 ,  H03F3/19 ,  H04B1/48

CPC classification number: H03G3/3036 ,  H01Q1/523 ,  H01Q1/525 ,  H01Q3/28 ,  H01Q3/36 ,  H01Q21/22 ,  H03F3/19 ,  H03F3/195 ,  H03F3/45085 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/48 ,  H04B7/0617

Abstract: Variable gain amplifiers and methods of designing the same include a first amplifying transistor configured to receive a first input signal and to provide a first amplified output signal based on the first input signal. A phase compensating resistor is connected to the first amplifying transistor and has a resistance calibrated as: R e = τ b C be , par where τb is the base transit time of the first amplifying transistor and Cbe,par is the gain-independent part of the base-emitter capacitance of the first amplifying transistor.