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公开(公告)号：US20160126961A1
公开(公告)日：2016-05-05
申请号：US14737603
申请日：2015-06-12
Applicant: MEDIATEK Inc.
Inventor： Pang-Ning Chen , Yu-Li Hsueh , Pi-An Wu
CPC classification number: H03L7/089 , H03K3/356043 , H03K5/1565 , H03L7/085
Abstract: A phase detector including a first latch and a control logic is provided. The first latch generates a first output signal and a second output signal in response to a phase difference between a first input signal and a second input signal. Each of the first and second output signals includes first phase information and second phase information of the phase difference. The control circuit generates a phase indicating signal in response to the first phase information of the phase difference. The phase indicating signal indicates a relative position between the first input signal and the second input signal.
Abstract translation: 提供了包括第一锁存器和控制逻辑器件的相位检测器。 第一锁存器响应于第一输入信号和第二输入信号之间的相位差产生第一输出信号和第二输出信号。 第一和第二输出信号中的每一个包括相位差的第一相位信息和第二相位信息。 控制电路根据相位差的第一相位信息产生相位指示信号。 相位指示信号表示第一输入信号和第二输入信号之间的相对位置。
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公开(公告)号：US11601156B2
公开(公告)日：2023-03-07
申请号：US17353351
申请日：2021-06-21
Applicant: MediaTek Inc.
Inventor： Yu-Hsien Chang , Po-Chun Huang , Pi-An Wu , Wen-Hsien Chiu , Tzu-Wen Sung
Abstract: Disclosed herein are devices and methods to reduce unwanted CIM3 emission in a wireless communication device, such that the transmit (TX) power level applied in a RU can be increased without exceeding a regulatory emission requirement. In some aspects, unwanted emission may be reduced by shifting or changing local oscillator (LO) frequencies during TX operation. Some embodiments are directed to a fast-locking PLL with adjustable bandwidth that can be controlled to increase the PLL bandwidth during the RX to TX transition to provide a fast locking to a new LO frequency. Some aspects are directed to configuring an LO frequency shift amount for different RUs when multiple RUs are allocated within a frequency band.
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公开(公告)号：US20220014227A1
公开(公告)日：2022-01-13
申请号：US17353351
申请日：2021-06-21
Applicant: MediaTek Inc.
Inventor： Yu-Hsien Chang , Po-Chun Huang , Pi-An Wu , Wen-Hsien Chiu , Tzu-Wen Sung
Abstract: Disclosed herein are devices and methods to reduce unwanted CIMS emission in a wireless communication device, such that the transmit (TX) power level applied in a RU can be increased without exceeding a regulatory emission requirement. In some aspects, unwanted emission may be reduced by shifting or changing local oscillator (LO) frequencies during TX operation. Some embodiments are directed to a fast-locking PLL with adjustable bandwidth that can be controlled to increase the PLL bandwidth during the RX to TX transition to provide a fast locking to a new LO frequency. Some aspects are directed to configuring an LO frequency shift amount for different RUs when multiple RUs are allocated within a frequency band.
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公开(公告)号：US09755653B2
公开(公告)日：2017-09-05
申请号：US14737603
申请日：2015-06-12
Applicant: MEDIATEK Inc.
Inventor： Pang-Ning Chen , Yu-Li Hsueh , Pi-An Wu
CPC classification number: H03L7/089 , H03K3/356043 , H03K5/1565 , H03L7/085
Abstract: A phase detector including a first latch and a control circuit is provided. The first latch generates a first output signal and a second output signal in response to a phase difference between a first input signal and a second input signal. Each of the first and second output signals includes first phase information and second phase information of the phase difference. The control circuit generates a phase indicating signal in response to the first phase information of the phase difference. The phase indicating signal indicates a relative position between the first input signal and the second input signal.
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