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1. 发明授权

US07603098B2 Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection 有权
标题翻译：可编程中频滤波器，用于实现直流偏移抑制和图像抑制之间的折中
公开(公告)号：US07603098B2
公开(公告)日：2009-10-13
申请号：US10813270
申请日：2004-03-31
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H04B1/10
CPC分类号： H04B1/123 , H03G3/3052 , H03G2201/706 , H03J3/06
摘要： The invention enables a compromise between DC offset rejection and image rejection through the use of a bandpass filter having a variable center frequency.
摘要翻译：本发明通过使用具有可变中心频率的带通滤波器来实现DC偏移抑制和图像抑制之间的折中。

2. 发明授权

US07603085B2 Bandpass filter with integrated variable gain function 有权
标题翻译：带集成可变增益功能的带通滤波器
公开(公告)号：US07603085B2
公开(公告)日：2009-10-13
申请号：US10840271
申请日：2004-05-07
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H04B17/00
CPC分类号： H04B1/123 , H03G3/3052 , H03G2201/706 , H03J3/06
摘要： The invention enables a gain adjustment in a receiver to improve signal quality.
摘要翻译：本发明使得接收机中的增益调整能够提高信号质量。

3. 发明授权

US07454180B2 Vehicle-mounted receiving apparatus for reducing distortion, improving reception sensitivity, and saving power 失效
标题翻译：用于减少失真，提高接收灵敏度和节省电力的车载接收装置
公开(公告)号：US07454180B2
公开(公告)日：2008-11-18
申请号：US11388939
申请日：2006-03-23
申请人： Yukio Ohtaki , Toru Oyama
发明人： Yukio Ohtaki , Toru Oyama
IPC分类号： H04B7/08
CPC分类号： H03G3/3068 , H03G2201/506 , H03G2201/706 , H04B1/18 , H04B7/08 , Y02D70/164 , Y02D70/168 , Y02D70/40 , Y02D70/444
摘要： A first low-noise amplifier is connected to a first receiving processing unit through a first cable and a bypass circuit is provided in parallel to the first low-noise amplifier so as to bypass the first low-noise amplifier. In the case that the intensity of broadcasting signal is more than a predetermined value, when the C/N is more than a first predetermined value and less than a second predetermined value higher than the first predetermined value, the broadcasting signal is transmitted to the first cable through the first low-noise amplifier, and when the C/N is less than the first predetermined value or more than the second predetermined value, the broadcasting signal is not input to the first low-noise amplifier but transmitted to the first cable through the bypass circuit.
摘要翻译：第一低噪声放大器通过第一电缆连接到第一接收处理单元，并且提供与第一低噪声放大器并联的旁路电路，以绕过第一低噪声放大器。在广播信号的强度大于预定值的情况下，当C / N大于第一预定值且小于高于第一预定值的第二预定值时，将广播信号发送到第一电缆通过第一低噪声放大器，并且当C / N小于第一预定值或大于第二预定值时，广播信号不被输入到第一低噪声放大器，而是传输到第一电缆通过旁路电路。

4. 发明申请

US20070018883A1 SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL FOR MULTICHANNEL RECEIVERS 有权
标题翻译：用于多通道接收机的自动增益控制的系统和方法
公开(公告)号：US20070018883A1
公开(公告)日：2007-01-25
申请号：US11161163
申请日：2005-07-25
申请人： Jeffrey Hester , Radde Majeed , Julia Baryl
发明人： Jeffrey Hester , Radde Majeed , Julia Baryl
IPC分类号： G01S7/34
CPC分类号： H03G3/3078 , G01S7/34 , G01S7/4021 , H03G3/001 , H03G2201/706 , Y10S73/90
摘要： Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A digital signal processor determines coarse gain correction based on digitized noise data for a plurality of channels, determines fine gain correction based on the residual error after the coarse gain, and determines frequency vs. gain curve correction based on the digitized noise data for a plurality of channels and a mathematical model of frequency gain across a noise spectrum for the radar system. The result of the processor is a gain control signal that is sent to the attenuator to perform hardware gain control and a channel specific scale factor for software gain control. In one embodiment, the processor generates the gain control signal during an inactive scan mode of the radar system.
摘要翻译：在雷达系统中执行自动增益控制的装置和方法。该系统的一个实施例包括衰减器，其控制从雷达接收器接收的信号的增益。数字信号处理器基于多个通道的数字化噪声数据来确定粗增益校正，基于粗增益之后的残差来确定精细增益校正，并且基于多个数字化噪声数据确定频率对增益曲线校正的通道和用于雷达系统的噪声频谱的频率增益的数学模型。处理器的结果是发送到衰减器以执行硬件增益控制和用于软件增益控制的通道特定比例因子的增益控制信号。在一个实施例中，处理器在雷达系统的非活动扫描模式期间产生增益控制信号。

5. 发明授权

US07127223B2 Proactive gain control system for communications receivers 有权
标题翻译：通信接收机主动增益控制系统
公开(公告)号：US07127223B2
公开(公告)日：2006-10-24
申请号：US11189941
申请日：2005-07-26
申请人： Hang Jin , John Grabner , Jun Huang , Daniel Wee Teck Ho
发明人： Hang Jin , John Grabner , Jun Huang , Daniel Wee Teck Ho
IPC分类号： H04B1/06
CPC分类号： H03G3/3052 , H03G2201/103 , H03G2201/204 , H03G2201/305 , H03G2201/706
摘要： The present invention discloses a proactive gain control system for a communications receiver. The proactive gain control system includes a variable gain module for outputting an output signal in response to an input signal. A detector detects the output signal and outputs a detection signal representing a signal strength of the output signal. A traffic monitor monitors the output signal and outputs a traffic profile signal indicating that a traffic profile for the input signal will change. A gain computing module outputs a gain adjustment value in response to the detection signal and the traffic profile signal. A gain control module outputs a gain control signal to the variable gain module, which determines a gain between the input and output signals, in response to the gain adjustment value.
摘要翻译：本发明公开了一种用于通信接收机的主动增益控制系统。主动增益控制系统包括用于响应于输入信号输出输出信号的可变增益模块。检测器检测输出信号并输出表示输出信号的信号强度的检测信号。流量监视器监视输出信号并输出指示用于输入信号的流量曲线将改变的流量分布信号。增益计算模块响应于检测信号和流量分布信号输出增益调整值。增益控制模块响应于增益调整值，向可变增益模块输出增益控制信号，该可变增益模块确定输入和输出信号之间的增益。

6. 发明申请

US20050221783A1 Programmable if frequency filter for enabling a compromise between DC offset rejection and image rejection 有权
标题翻译：如果频率滤波器可以实现DC偏移抑制和图像抑制之间的折中，则可编程
公开(公告)号：US20050221783A1
公开(公告)日：2005-10-06
申请号：US10813270
申请日：2004-03-31
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H03G3/30 , H03J3/06 , H04B1/12 , H04B1/16 , H04B1/10 , H04B1/04
CPC分类号： H04B1/123 , H03G3/3052 , H03G2201/706 , H03J3/06
摘要： The invention enables a compromise between DC offset rejection and image rejection through the use of a bandpass filter having a variable center frequency.
摘要翻译：本发明通过使用具有可变中心频率的带通滤波器来实现DC偏移抑制和图像抑制之间的折中。

7. 发明授权

US09917607B1 Baseline wander correction gain adaptation 有权
公开(公告)号：US09917607B1
公开(公告)日：2018-03-13
申请号：US15449619
申请日：2017-03-03
申请人： Oracle International Corporation
发明人： Xun Zhang , Dawei Huang , Jianghui Su , Chaitanya Palusa
IPC分类号： H04L25/03 , H04B1/16 , H03G3/30 , H03M1/66
CPC分类号： H04B1/16 , H03G3/3078 , H03G2201/706 , H03M1/66 , H04L25/03057
摘要： Embodiments include systems and methods for baseline wander correction gain adaptation in receiver circuits. Some embodiments operate in context of an alternating current coupled transceiver communicating data signals over a high-speed transmission channel, such that the receiver system includes an AC-coupled data input and a feedback loop with a data slicer and an error slicer. A baseline wander correction (BWC) circuit can be part of the feedback loop and can generate a feedback signal corresponding to low-pass-filtered bits data from the data slicer output and having a gain generated according to pattern-filtered error data from the error slicer output. For example, gain adaptation is performed according to error information corresponding to a detected relatively high-frequency data pattern following a long low-frequency pattern.

8. 发明授权

US07103336B1 Radio receiver, radio receiving method, and recording medium 失效
标题翻译：无线电接收机，无线电接收方法和记录介质
公开(公告)号：US07103336B1
公开(公告)日：2006-09-05
申请号：US09654274
申请日：2000-09-01
申请人： Yoshinori Miyajima , Atsuhiko Hashigaya
发明人： Yoshinori Miyajima , Atsuhiko Hashigaya
IPC分类号： H04B1/06 , H04L27/08
CPC分类号： H04B1/1027 , H03G3/3052 , H03G2201/103 , H03G2201/202 , H03G2201/307 , H03G2201/706 , H04B17/318
摘要： The AGC threshold of electric intensity level is set by the signal processor portion 107 in response to the measured result of the error rate measuring circuit 109 that measures the error rate of the received signal, and the gain control operation of the gain control circuit 106 is caused to start when the electric field intensity detected by the field intensity detector 105 reaches the threshold of electric intensity level. Accordingly, the optimum AGC threshold of electric intensity level can be set to meet the radio wave situation in which the radio receiver, i.e., the receiving situation of the received signal and also the gain control of the gain controlling means can be achieved to optimize the signal quality of the received signal in the situation of either the IM characteristic or the electric field variation characteristic, e.g., under the environment of the strong electric field IM or the environment in which the electric field is changed strongly.
摘要翻译：响应于测量接收信号的误码率的误差率测量电路109的测量结果，由信号处理器部分107设置电强度电平的AGC阈值，并且增益控制电路106的增益控制操作是当由场强检测器105检测到的电场强度达到电强度水平的阈值时开始启动。因此，可以设置电强度级的最佳AGC阈值以满足无线电接收机的无线电波情况，即接收信号的接收状况，以及增益控制装置的增益控制可以实现，在IM特性或电场变化特性的情况下，例如在强电场IM的环境或电场强烈变化的环境下，接收信号的信号质量。

9. 发明申请

US20060141965A1 System for dynamic control of automatic gain control take-over-point and method of operation 有权
公开(公告)号：US20060141965A1
公开(公告)日：2006-06-29
申请号：US11023691
申请日：2004-12-28
申请人： Andreas Hennig
发明人： Andreas Hennig
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03G3/3068 , H03G2201/103 , H03G2201/204 , H03G2201/305 , H03G2201/307 , H03G2201/706
摘要： A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

10. 发明授权

US07606544B2 System for dynamic control of automatic gain control take-over-point and method of operation 有权
标题翻译：自动增益控制接点动态控制系统及运行方式
公开(公告)号：US07606544B2
公开(公告)日：2009-10-20
申请号：US11023691
申请日：2004-12-28
申请人： Andreas G. Hennig
发明人： Andreas G. Hennig
IPC分类号： H04B7/00
CPC分类号： H03G3/3068 , H03G2201/103 , H03G2201/204 , H03G2201/305 , H03G2201/307 , H03G2201/706
摘要： A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.
摘要翻译：用于处理信号的接收器包括第一放大器电路和第二放大器电路。第一放大器电路与第一增益曲线相关联地操作。第二放大器电路与第二增益曲线相关联地操作。接收机还包括增益控制电路，其确定与调制信号相关联的质量指示符。增益控制电路至少部分地基于所确定的质量指示符来调整第一增益曲线和第二增益曲线。

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