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1. 发明申请

US20080231355A1 Tuner and Demodulating Unit Thereof 失效
标题翻译：调谐器及其解调单元
公开(公告)号：US20080231355A1
公开(公告)日：2008-09-25
申请号：US10572552
申请日：2005-03-22
申请人： Hye-Ryung Lee
发明人： Hye-Ryung Lee
IPC分类号： H03D99/00 , H03J3/00
CPC分类号： H04N5/455
摘要： A tuner and a demodulating unit thereof are provided. A trap filter for a specific frequency is installed in the IF demodulating unit so as to eliminate a frequency signal acting as a beat component.
摘要翻译：提供了调谐器及其解调单元。用于特定频率的陷波滤波器安装在IF解调单元中，以消除作为拍频分量的频率信号。

2. 发明授权

US07683705B2 Circuit arrangement and method for matching a demodulator 有权
标题翻译：用于匹配解调器的电路布置和方法
公开(公告)号：US07683705B2
公开(公告)日：2010-03-23
申请号：US11754743
申请日：2007-05-29
申请人： Helmut Koroschetz
发明人： Helmut Koroschetz
IPC分类号： H03D1/06 , H03D3/28 , H03D99/00
CPC分类号： H03D1/06 , H03D3/001 , H03D2200/0033 , H03D2200/0096
摘要： A circuit arrangement for matching a demodulator to operating conditions comprises a demodulator designed to demodulate an analog input signal to a demodulated signal. The demodulator is also designed to be driven by a control signal. The circuit arrangement further comprises a sensor which is designed to provide a sensor status signal, and a control unit to whose input side the sensor status signal is applied and which is designed to provide the control signal for the demodulator during operation.
摘要翻译：用于将解调器与操作条件相匹配的电路装置包括设计成将模拟输入信号解调为解调信号的解调器。解调器也被设计成由控制信号驱动。该电路装置还包括被设计成提供传感器状态信号的传感器，以及一个控制单元，其输入端应用传感器状态信号，并被设计成在操作期间为解调器提供控制信号。

3. 发明申请

US20110243200A1 Demodulator and Method for Demodulating a Carrier Signal 有权
标题翻译：解调器和解调载波信号的方法
公开(公告)号：US20110243200A1
公开(公告)日：2011-10-06
申请号：US12753450
申请日：2010-04-02
申请人： Walter Kargl , Edmund Ehrlich
发明人： Walter Kargl , Edmund Ehrlich
IPC分类号： H04B1/40 , H03D99/00
CPC分类号： H04L27/0014 , H03M1/1255 , H04L2027/0036 , H04L2027/0067
摘要： A demodulator includes a sampler and a trigger unit. The sampler is configured to sample a carrier signal based on a trigger signal to obtain a demodulated signal. The trigger unit is configured to detect a zero crossing of the carrier signal or an extreme value of an amplitude of the carrier signal. Further, the trigger unit is configured to provide the trigger signal based on the detected zero crossing or the detected extreme value, so that the carrier signal is sampled by the sampler with a predefined phase shift to the detected zero crossing or the detected extreme value. The predefined phase shift is larger than 30° plus an integer multiple of 90° and lower than 60° plus the same integer multiple of 90° in reference to the carrier signal.
摘要翻译：解调器包括采样器和触发单元。采样器被配置为基于触发信号对载波信号进行采样以获得解调信号。触发单元被配置为检测载波信号的零交叉或载波信号的幅度的极值。此外，触发单元被配置为基于检测到的过零点或检测到的极值来提供触发信号，使得载波信号被采样器采样到预定的相移到检测到的过零点或检测到的极值。相对于载波信号，预定义的相移大于30°加上90°的整数倍，低于60°加上90°的相同整数倍。

4. 发明申请

US20100197252A1 FM-AM DEMODULATOR AND CONTROL METHOD THEREFOR 失效
标题翻译： FM-AM解调器及其控制方法
公开(公告)号：US20100197252A1
公开(公告)日：2010-08-05
申请号：US12685960
申请日：2010-01-12
申请人： Nobunari TSUKAMOTO
发明人： Nobunari TSUKAMOTO
IPC分类号： H04B1/06 , H03D99/00
CPC分类号： H04B1/30 , H03D1/00 , H03D3/009
摘要： A FM-AM demodulator includes a FM signal amplifier, a local oscillator, an image oscillator, a first selector, a first orthogonal mixer, an AM signal amplifier, a first frequency divider, a second frequency divider, a second selector, a second orthogonal mixer, a third selector, a first filter, a first amplifier, a fourth selector, a second filter, a second amplifier, a first gain controller, an I/Q compensation unit, an IF oscillator, a third orthogonal mixer, an adder, a channel filter configured to extract a signal with a predetermined frequency band output from the adder, a third amplifier, a second gain controller, a demodulator, and an I/Q compensation controller configured to generate an I/Q compensation signal to use for adjusting phase and gain of the I signal used in an I/Q compensation unit by detecting amplitude of the output signal from the demodulator, and output the generated signal to the I/Q compensation unit.
摘要翻译： FM-AM解调器包括FM信号放大器，本地振荡器，图像振荡器，第一选择器，第一正交混频器，AM信号放大器，第一分频器，第二分频器，第二选择器，第二正交混频器，第三选择器，第一滤波器，第一放大器，第四选择器，第二滤波器，第二放大器，第一增益控制器，I / Q补偿单元，IF振荡器，第三正交混频器，信道滤波器，被配置为从加法器输出的预定频带提取信号;第三放大器，第二增益控制器，解调器和I / Q补偿控制器，被配置为产生用于调整的I / Q补偿信号通过检测来自解调器的输出信号的振幅，在I / Q补偿单元中使用的I信号的相位和增益，并将产生的信号输出到I / Q补偿单元。

5. 发明授权

US11539347B1 Current-mode frequency translation circuit with programmable gain 有权
公开(公告)号：US11539347B1
公开(公告)日：2022-12-27
申请号：US17467059
申请日：2021-09-03
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人： Sudipto Chakraborty , John Francis Bulzacchelli , David James Frank , Andrew D. Davies
IPC分类号： H03D99/00 , H03H11/04 , H03D7/12 , H03H11/24 , H03H11/28
摘要： A radio frequency (RF) transmission circuit includes an input stage, a current-mode mixer coupled to an output of the input stage, an attenuator coupled to an output of the current-mode mixer, and a matching network coupled to an output of the attenuator. The input stage, current-mode mixer, attenuator, and the matching network are configured in a series stack.

6. 发明授权

US08903747B2 Isolating changes in dynamic systems 有权
标题翻译：隔离动态系统的变化
公开(公告)号：US08903747B2
公开(公告)日：2014-12-02
申请号：US12486756
申请日：2009-06-18
申请人： Eric L. Eilebrecht , Vance P. Morrison , Erika Fuentes
发明人： Eric L. Eilebrecht , Vance P. Morrison , Erika Fuentes
IPC分类号： G06F15/18 , G01R25/00 , H03D99/00 , G06F9/50 , G06F11/30
CPC分类号： G06F9/50 , G06F11/3093
摘要： A software optimization system isolates an effect of a change in a control variable from effects of ongoing, unknown changes in other variables. The system discards effects due to noise so that effects of interest to a programmer are more easily visible. The software optimization system treats variations in one or more control variables and in the output of the system as signals. The system varies the control variable at a specific frequency unlikely to correlate with uncontrolled variations in external variables. The system uses digital signal processing (DSP) techniques to filter the output, isolating the frequency of the control variable variation. The system then compares the resulting filtered output to the input to determine the approximate effect of the variation in the control variable.
摘要翻译：软件优化系统将控制变量的变化与其他变量的持续未知变化的影响隔离开来。系统由于噪音而丢弃影响，使程序员感兴趣的效果更容易看出。软件优化系统将一个或多个控制变量和系统输出中的变化视为信号。该系统以不可能与外部变量的不受控制的变化相关联的特定频率改变控制变量。该系统采用数字信号处理（DSP）技术对输出进行滤波，隔离控制变量的频率变化。然后，系统将所得到的滤波输出与输入进行比较，以确定控制变量的变化的近似效应。

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