公开(公告)号：US20100054378A1

公开(公告)日：2010-03-04

申请号：US12330518

申请日：2008-12-09

Applicant: Kun-Chien Hung ,  Ying-Yao Lin

Inventor： Kun-Chien Hung ,  Ying-Yao Lin

IPC: H04L27/16

CPC classification number: H04L27/16

Abstract: A center frequency adjustment device for a communications receiver includes an A/D converter coupled to an analog filter in the communications receiver for converting an output signal of the analog filter to a digital signal, a carrier frequency offset estimator coupled to the A/D converter for estimating a carrier frequency offset of the communications receiver according to the digital signal, and a control circuit coupled to the analog filter and the carrier frequency offset estimator for adjusting a center frequency of the analog filter according to the carrier frequency offset.

Abstract translation: 用于通信接收机的中心频率调节装置包括耦合到通信接收机中的模拟滤波器的A / D转换器，用于将模拟滤波器的输出信号转换为数字信号，耦合到A / D转换器的载波频率偏移估计器 用于根据数字信号估计通信接收机的载波频率偏移;以及控制电路，耦合到模拟滤波器和载波频率偏移估计器，用于根据载波频率偏移调整模拟滤波器的中心频率。

公开(公告)号：US20050180532A1

公开(公告)日：2005-08-18

申请号：US10908109

申请日：2005-04-28

Applicant: Chao-Cheng Lee ,  Ying-Yao Lin ,  Ying-Hsi Lin

Inventor： Chao-Cheng Lee ,  Ying-Yao Lin ,  Ying-Hsi Lin

IPC: H04L1/00

CPC classification number: H04B1/30 ,  H04B17/11

Abstract: A method and device for calibrating in-phase and quadrature-phase (IQ) mismatch. The device is used in a direct down-conversion circuit of a communication system. The device has a first mixer for mixing an RF signal with a first carrier signal, so as to generate an in-phase analog signal; a second mixer for mixing the RF signal with a second carrier signal, so as to generate a quadrature-phase analog signal; an operation unit for executing a Least Mean Square (LMS) algorithm and thereby generating a compensation signal according to the in-phase analog signal and the quadrature-phase analog signal; and a calibration unit for compensating the in-phase analog signal and the quadrature-phase analog signal according to the compensation signal, so as to calibrate the IQ mismatch between the in-phase analog signal and the quadrature-phase analog signal.

Abstract translation: 用于校准同相和正交相（IQ）失配的方法和装置。 该设备用于通信系统的直接下变频电路。 该装置具有用于混合RF信号与第一载波信号的第一混频器，以产生同相模拟信号; 第二混频器，用于将RF信号与第二载波信号混频，以产生正交相位模拟信号; 操作单元，用于执行最小均方（LMS）算法，从而根据同相模拟信号和正交相位模拟信号产生补偿信号; 以及校准单元，用于根据补偿信号补偿同相模拟信号和正交相位模拟信号，以便校准同相模拟信号和正交相位模拟信号之间的IQ失配。

公开(公告)号：US20050152481A1

公开(公告)日：2005-07-14

申请号：US10905496

申请日：2005-01-07

Applicant: Ying-Yao Lin ,  Chao-Cheng Lee

Inventor： Ying-Yao Lin ,  Chao-Cheng Lee

IPC: H03D3/00 ,  H04L1/00 ,  H04L27/00

CPC classification number: H03D3/009 ,  H04L27/0014 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: A method and an apparatus of IQ mismatch calibration in a radio communication system. The method includes receiving a radio frequency signal, mixing the radio frequency signal with a first carrier to generate an In-phase analog signal, mixing the radio frequency signal with a second carrier to generate a Quadrature-phase analog signal, detecting a phase offset between the In-phase analog signal and the Quadrature-phase analog signal, computing at least a tuning parameter according to the phase offset, and calibrating at least one of the In-phase analog signal and the Quadrature-phase analog signal according to at least one of the phase offset and the tuning parameter such that the In-phase analog signal and the Quadrature-phase analog signal are orthogonal after calibration.

Abstract translation: 无线电通信系统中IQ失配校准的方法和装置。 该方法包括接收射频信号，将射频信号与第一载波混合以产生同相模拟信号，将射频信号与第二载波混合以产生正交相位模拟信号，检测正交相位模拟信号之间的相位偏移 所述同步模拟信号和所述正相模拟信号，根据所述相位偏移来计算至少一个调谐参数，并且根据至少一个校准所述同相模拟信号和所述正相模拟信号中的至少一个 的相位偏移和调谐参数，使得校准后的同相模拟信号和正交相位模拟信号是正交的。

公开(公告)号：US08385829B2

公开(公告)日：2013-02-26

申请号：US13405273

申请日：2012-02-25

Applicant: Ying-Yao Lin

Inventor： Ying-Yao Lin

IPC: H04B7/00

CPC classification number: H04W48/16 ,  H04W8/005 ,  H04W84/18

Abstract: A slave device that complies with Bluetooth communication protocol includes a communication module, a memory and a RF output module. The communication module can be operated to generate a driving signal. The memory stores an access code that complies with Bluetooth communication protocol and is electrically connected to the communication module. The memory is configured to determine whether or not to output the access code according to the driving signal output by the communication module. The RF output module is electrically connected to the memory so as to receive and output the access code.

Abstract translation: 符合蓝牙通信协议的从设备包括通信模块，存储器和RF输出模块。 通信模块可以被操作以产生驱动信号。 存储器存储符合蓝牙通信协议的接入码，并且电连接到通信模块。 存储器被配置为根据由通信模块输出的驱动信号确定是否输出访问码。 RF输出模块电连接到存储器，以便接收和输出访问码。

公开(公告)号：US07738852B2

公开(公告)日：2010-06-15

申请号：US11567222

申请日：2006-12-06

Applicant: Ying-Yao Lin ,  Ying-Hsi Lin

Inventor： Ying-Yao Lin ,  Ying-Hsi Lin

IPC: H04B1/26

CPC classification number: H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D2200/0084

Abstract: Disclosed is a mixer comprising: a switching circuit, having a first pair of differential signal nodes and a second pair of differential signal nodes, for switching according to a local oscillation signal; an amplifying stage circuit, for receiving an input signal and amplifying the input signal; a load circuit, for serving as the loading of the mixer and generating an output signal of the mixer; a common-mode feedback circuit, for receiving the output signal and generating a feedback signal according to the output signal; a first current source, for receiving the feedback signal and generating a first current according to the feedback signal; and a second current source, for receiving the feedback signal and generating a second current according to the feedback signal.

Abstract translation: 公开了一种混频器，包括：开关电路，具有第一对差分信号节点和第二对​​差分信号节点，用于根据本地振荡信号进行切换; 放大级电路，用于接收输入信号并放大输入信号; 负载电路，用作混频器的负载并产生混频器的输出信号; 共模反馈电路，用于接收输出信号并根据输出信号产生反馈信号; 第一电流源，用于接收所述反馈信号并根据所述反馈信号产生第一电流; 和第二电流源，用于接收反馈信号并根据反馈信号产生第二电流。

公开(公告)号：US07636405B2

公开(公告)日：2009-12-22

申请号：US10908109

申请日：2005-04-28

Applicant: Chao-Cheng Lee ,  Ying-Yao Lin ,  Ying-Hsi Lin

Inventor： Chao-Cheng Lee ,  Ying-Yao Lin ,  Ying-Hsi Lin

IPC: H04L1/00

CPC classification number: H04B1/30 ,  H04B17/11

Abstract: A method and device for calibrating in-phase and quadrature-phase (IQ) mismatch. The device is used in a direct down-conversion circuit of a communication system. The device has a first mixer for mixing an RF signal with a first carrier signal, so as to generate an in-phase analog signal; a second mixer for mixing the RF signal with a second carrier signal, so as to generate a quadrature-phase analog signal; an operation unit for executing a Least Mean Square (LMS) algorithm and thereby generating a compensation signal according to the in-phase analog signal and the quadrature-phase analog signal; and a calibration unit for compensating the in-phase analog signal and the quadrature-phase analog signal according to the compensation signal, so as to calibrate the IQ mismatch between the in-phase analog signal and the quadrature-phase analog signal.

Abstract translation: 用于校准同相和正交相（IQ）失配的方法和装置。 该设备用于通信系统的直接下变频电路。 该装置具有用于混合RF信号与第一载波信号的第一混频器，以产生同相模拟信号; 第二混频器，用于将RF信号与第二载波信号混频，以产生正交相位模拟信号; 操作单元，用于执行最小均方（LMS）算法，从而根据同相模拟信号和正交相位模拟信号产生补偿信号; 以及校准单元，用于根据补偿信号补偿同相模拟信号和正交相位模拟信号，以便校准同相模拟信号和正交相位模拟信号之间的IQ失配。

公开(公告)号：US20080007387A1

公开(公告)日：2008-01-10

申请号：US11820194

申请日：2007-06-18

Applicant: Ying-Yao Lin

Inventor： Ying-Yao Lin

IPC: H01C7/10

CPC classification number: H03H11/245

Abstract: A transistor resistor and an associated method are provided to improve the resistance linearity of the transistor resistor. The transistor resistor includes a transistor operating in the resistive region, where the drain and source of the transistor receive an input signal and an output signal respectively. The transistor resistor also includes a compensating circuit for generating a compensating signal according to the input signal. The compensating signal is provided to the gate of the transistor such that the voltage difference between the gate and source of the transistor approximates to a constant.

Abstract translation: 提供晶体管电阻器和相关方法来提高晶体管电阻器的电阻线性度。 晶体管电阻器包括在电阻区域中工作的晶体管，晶体管的漏极和源极分别接收输入信号和输出信号。 晶体管电阻器还包括用于根据输入信号产生补偿信号的补偿电路。 补偿信号被提供给晶体管的栅极，使得晶体管的栅极和源极之间的电压差近似于常数。

公开(公告)号：US20060250181A1

公开(公告)日：2006-11-09

申请号：US11381548

申请日：2006-05-04

Applicant: Chao-Cheng Lee ,  Ying-Yao Lin

Inventor： Chao-Cheng Lee ,  Ying-Yao Lin

IPC: H03K5/00

CPC classification number: H03K5/086 ,  H03H11/1286 ,  H03H11/1291

Abstract: A bandwidth-adjustable filter includes an operational amplifier, a first resistor, a first capacitor and a first resistor ladder circuit. The operational amplifier has a negative input terminal and a positive input terminal The first resistor is coupled to one of the input terminals of the operational amplifier. The first capacitor is coupled to the first resistor. The first resistor ladder circuit is coupled in parallel to the first resistor for changing the resistance of the first resistor so as to adjust the bandwidth of the filter.

Abstract translation: 带宽可调滤波器包括运算放大器，第一电阻器，第一电容器和第一电阻梯形电路。 运算放大器具有负输入端和正输入端。第一电阻耦合到运算放大器的一个输入端。 第一电容器耦合到第一电阻器。 第一电阻梯形电路并联耦合到第一电阻器，用于改变第一电阻器的电阻，以调整滤波器的带宽。

公开(公告)号：US08891682B2

公开(公告)日：2014-11-18

申请号：US11559396

申请日：2006-11-13

Applicant: Chao-Cheng Lee ,  Ying-Yao Lin

Inventor： Chao-Cheng Lee ,  Ying-Yao Lin

IPC: H03K9/00 ,  H04B1/28 ,  H03D7/18

CPC classification number: H04B1/28 ,  H03D7/18 ,  H03D2200/0086

Abstract: A mixer for the elimination of harmonic mixing in signal transmission is presented. The mixer incorporates a mixing unit and a modulation output unit. The mixing unit receives an input signal and a modulated signal, and outputs an output signal after signal mixing. The modulation output unit is for the generation of modulated signals, which are usually pulse-width modulated. The modulation output unit includes a delta sigma modulator and a digital domain code generator. The delta sigma modulator outputs the modulated signal responding to the received oscillation signal and digital domain code, the digital domain code generator generates the digital domain code in order to provide digital domain sine wave code for the use of the delta sigma modulator. The oscillation signal may be a signal of constant hi-frequency, or a signal that has a frequency larger or equal to that of the input signal by an integer factor.

Abstract translation: 提出了一种用于消除信号传输中谐波混合的混频器。 混合器包括混合单元和调制输出单元。 混合单元接收输入信号和调制信号，并在信号混合后输出输出信号。 调制输出单元用于产生调制信号，调制信号通常是脉冲宽度调制的。 调制输出单元包括ΔΣ调制器和数字域代码发生器。 ΔΣ调制器响应于接收到的振荡信号和数字域代码输出调制信号，数字域代码生成器生成数字域代码，以便为使用Δ-Σ调制器提供数字域正弦波码。 振荡信号可以是恒定高频的信号，或具有与输入信号的频率大于或等于整数因子的频率的信号。

公开(公告)号：US08325794B2

公开(公告)日：2012-12-04

申请号：US11532101

申请日：2006-09-15

Applicant: Ying-Yao Lin ,  Fong-Ching Huang

Inventor： Ying-Yao Lin ,  Fong-Ching Huang

IPC: H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC classification number: H03D3/009 ,  H03D2200/0029

Abstract: An apparatus and a method for calibrating IQ mismatch to ensure that an in-phase oscillating signal and a quadrature-phase oscillating signal are orthogonal to each other. The apparatus includes a mixer for mixing the in-phase oscillating signal with the quadrature-phase oscillating signal to generate an output signal, a control module for determining a control signal according to a low-frequency component of the output signal, and a phase adjusting module for adjusting the phase of a specific oscillating signal to ensure that the in-phase oscillating signal and the quadrature-phase oscillating signal are orthogonal to each other. The specific oscillating signal may be the in-phase or the quadrature-phase oscillating signal. The apparatus does not require a digital signal-processing unit to perform complex calculations nor requires additional oscillating sources for calibration. Hence, the circuit design is much simplified, and the consumption of system resources is significantly reduced.

Abstract translation: 用于校准IQ失配以确保同相振荡信号和正交相位振荡信号彼此正交的装置和方法。 该装置包括：混合器，用于将同步振荡信号与正交振荡信号混频以产生输出信号;控制模块，用于根据输出信号的低频分量确定控制信号;以及相位调整 模块，用于调整特定振荡信号的相位，以确保同相振荡信号和正交振荡信号彼此正交。 特定振荡信号可以是同相或正交相位振荡信号。 该装置不需要数字信号处理单元执行复杂的计算，也不需要额外的振荡源进行校准。 因此，电路设计大大简化，系统资源的消耗明显减少。