公开(公告)号：US20230335914A1

公开(公告)日：2023-10-19

申请号：US18299162

申请日：2023-04-12

Applicant: MEDIATEK INC.

Inventor： Shao-Chou HUNG ,  Bao-Chi PENG ,  Chun-Chia CHEN ,  I-Kang FU ,  Abdelkader MEDLES ,  Gilles CHARBIT

IPC: H01Q15/24

CPC classification number: H01Q15/246 ,  H01Q15/244

Abstract: Provided is an apparatus for transmitting a circularly polarized signal by linearly polarized antennas. A horizontally polarized antenna and a vertically polarized antenna of the apparatus receives a first circularly polarized signal transmitted based on a transmitted baseband signal vector. Based on the first circularly polarized signal, a radio frequency (RF) module of the apparatus generates a received baseband signal vector including a product of the transmitted baseband signal vector and a receiving polarization vector of the transmitted baseband signal vector. Processing circuitry of the apparatus estimates the receiving polarization vector based on the received baseband signal vector and calibrates power amplifiers (PAs) and local oscillator (LO) signals of frequency converters in the RF module based on the estimated receiving polarization vector. The horizontally and vertically polarized antennas transmit a second circularly polarized signal based on the calibrated PAs and the calibrated LO signals of the frequency converters.

公开(公告)号：US20240014891A1

公开(公告)日：2024-01-11

申请号：US18329712

申请日：2023-06-06

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Bao-Chi PENG ,  Chen-I LIAO ,  Shao-Chou HUNG ,  I-Kang FU

IPC: H04B7/185 ,  H04W16/28

CPC classification number: H04B7/18513 ,  H04W16/28

Abstract: A method can include determining an initial beam configuration by a controller at a satellite in a non-terrestrial network (NTN); applying the initial beam configuration to control an antenna array to transmit a beam to cover a target service area; determining subsequent beam configurations, by the controller, corresponding to a sequence of locations along an orbit of the satellite; and applying the subsequent beam configurations at each of the sequence of locations successively to control the antenna array to transmit respective beams to cover the target service area while the satellite is flying along the orbit. The controller determines the initial beam configuration and the subsequent beam configurations in a way that a variation of beam footprints of the beams is minimized to realize a constant beam footprint corresponding to the target service area.

公开(公告)号：US20240015623A1

公开(公告)日：2024-01-11

申请号：US18329779

申请日：2023-06-06

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Bao-Chi PENG ,  Chen-I LIAO ,  Shao-Chou HUNG ,  I-Kang FU

IPC: H04W36/08 ,  H04W36/30 ,  H04W48/20

CPC classification number: H04W36/083 ,  H04W36/30 ,  H04W48/20

Abstract: A method can include determining an initial beam configuration by a controller at a satellite in a non-terrestrial network (NTN); applying the initial beam configuration to control an antenna array to transmit a beam to cover a target service area; determining subsequent beam configurations, by the controller, corresponding to a sequence of locations along an orbit of the satellite; and applying the subsequent beam configurations at each of the sequence of locations successively to control the antenna array to transmit respective beams to cover the target service area while the satellite is flying along the orbit. The controller determines the initial beam configuration and the subsequent beam configurations in a way that a variation of beam footprints of the beams is minimized to realize a constant beam footprint corresponding to the target service area.

公开(公告)号：US20160057255A1

公开(公告)日：2016-02-25

申请号：US14466094

申请日：2014-08-22

Applicant: MediaTek Inc.

Inventor： Yi-Ching LIAO ,  Ching-Ting HUANG ,  Bao-Chi PENG

IPC: H04L29/06 ,  H04B5/00

CPC classification number: H04L69/18 ,  G06K7/10297 ,  H04B5/00 ,  H04B5/0031 ,  H04L27/0008 ,  H04L27/0012

Abstract: A unified communications receiver and associated method is provided. The unified communications receiver includes: a protocol detection apparatus, configured to determine a near-field communication (NFC) protocol type of an incoming baseband signal according to a first portion of the incoming baseband signal; and a demodulation device, compliant with a plurality of NFC protocols, configured to demodulate the incoming RF signal according to the determined NFC protocol type.

Abstract translation: 提供统一的通信接收机和相关方法。 统一通信接收机包括：协议检测装置，被配置为根据输入基带信号的第一部分确定输入基带信号的近场通信（NFC）协议类型; 以及解调装置，其符合多个NFC协议，被配置为根据所确定的NFC协议类型对输入的RF信号进行解调。

公开(公告)号：US20230336201A1

公开(公告)日：2023-10-19

申请号：US18299512

申请日：2023-04-12

Applicant: MEDIATEK INC.

Inventor： Shao-Chou HUNG ,  Bao-Chi PENG ,  Chun-Chia CHEN ,  I-Kang FU ,  Abdelkader MEDLES ,  Gilles CHARBIT

IPC: H04B1/16

CPC classification number: H04B1/1638

Abstract: Aspects of the disclosure provide an apparatus for receiving a circularly polarized signal by linearly polarized antennas. A horizontally polarized antenna and a vertically polarized antenna of the apparatus receive a circularly polarized signal that is transmitted based on a transmitted baseband signal vector. A radio frequency (RF) module of the apparatus generates a first baseband signal vector based on the received circularly polarized signal. The first baseband signal vector includes a product of the transmitted baseband signal vector and a receiving polarization vector of the transmitted baseband signal vector. Processing circuitry of the apparatus estimates the receiving polarization vector of the transmitted baseband signal vector based on the first baseband signal vector. The processing circuitry derives a second baseband signal vector based on the estimated receiving polarization vector and the first baseband signal vector.

公开(公告)号：US20230335913A1

公开(公告)日：2023-10-19

申请号：US18299115

申请日：2023-04-12

Applicant: MEDIATEK INC.

Inventor： Bao-Chi PENG ,  Shao-Chou HUNG ,  Chun-Chia CHEN ,  I-Kang FU ,  Abdelkader MEDLES ,  Gilles CHARBIT

IPC: H01Q15/24 ,  H01Q3/24

CPC classification number: H01Q15/244 ,  H01Q3/24

Abstract: Aspects of the disclosure provide an apparatus for transmitting a circularly polarized signal by linearly polarized antennas. Processing circuitry of the apparatus generates a transmitted baseband signal vector. Based on the transmitted baseband signal vector, power amplifiers (PAs) of the apparatus generates transmitted radio frequency (RF) signals. The transmitted RF signals are received by receiving circuitry of the apparatus to obtain a received baseband signal vector. A controller of the apparatus calibrates the PAs and local oscillator (LO) signals of frequency converters of the apparatus based on the received baseband signal vector. A horizontally polarized antenna and a vertically polarized antenna of the apparatus transmit a circularly polarized signal based on the calibrated PAs and the calibrated LO signals.