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1. 发明申请

US20050258914A1 Variable capacitance circuit having on/off switch for variable capacitance function, and voltage controlled oscillator using the variable capacitance circuit 有权
标题翻译：具有用于可变电容功能的开/关开关的可变电容电路，以及使用可变电容电路的压控振荡器
公开(公告)号：US20050258914A1
公开(公告)日：2005-11-24
申请号：US11129312
申请日：2005-05-16
申请人： Kotaro Takagi
发明人： Kotaro Takagi
IPC分类号： H03H5/12 , H03B5/12 , H03J3/18 , H03J3/20 , H03J5/24 , H03K3/354 , H03B5/00
CPC分类号： H03J5/244 , H03B2200/0062 , H03J3/18 , H03J3/20
摘要： A variable capacitance circuit capable of switching on and off a variable capacitance function, includes variable capacitance means formed such that variable capacitance elements whose capacitance values change according to a voltage value of a supplied capacitance control voltage are connected so as to be paired and a plurality pairs of variable capacitance elements are connected in parallel forming multiple stages; bias voltage generation means for generating bias voltages of different voltage values based on a constant voltage from a constant voltage source; and an on-off switch for the variable capacitance function, in which the variable capacitance function of the variable capacitance means is turned on by supplying the bias voltage to the variable capacitance element of each stage of the variable capacitance means and turned off by grounding the bias voltage of each voltage value.
摘要翻译：能够接通和断开可变电容功能的可变电容电路包括可变电容装置，其形成为使得电容值根据所提供的电容控制电压的电压值而变化的可变电容元件被连接成成对且多个成对的可变电容元件并联连接成多级; 偏置电压产生装置，用于基于来自恒定电压源的恒定电压产生不同电压值的偏置电压; 以及用于可变电容功能的开 - 关开关，其中可变电容装置的可变电容功能通过向可变电容装置的每一级的可变电容元件提供偏置电压而导通，并通过接地每个电压值的偏置电压。

2. 发明申请

US20040223086A1 Digital IF demodulator 有权
标题翻译：数字中频解调器
公开(公告)号：US20040223086A1
公开(公告)日：2004-11-11
申请号：US10776991
申请日：2004-02-12
申请人： Broadcom Corporation
发明人： Steven T. Jaffe
IPC分类号： H04N005/455
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44 , H04N5/4401 , H04N7/035 , H04N21/426 , H04N21/4263 , H04N2005/91364
摘要： A digital IF demodulator includes an analog-to-digital (A/D) converter that receives an analog IF signal and converts it to a digital IF signal. A parallel multiplier then down-converts the digital IF signal to a baseband signal having a video component and an audio component. The frequency down-conversion uses a parallel multiplier driven by an outer feedback loop that corrects gross frequency errors in said digital IF signal. The digital IF demodulator also includes a video recovery circuit that selects the video component from the baseband signal and further down-converts the baseband signal to a video baseband using a video complex mixer driven by an inner feedback loop that corrects fast phase perturbations in the video recovery circuit. Finally, the digital IF demodulator includes an audio recovery circuit that (i) receives said baseband signal from the parallel multiplier, and (ii) down-converts the audio component to an audio baseband signal using an audio complex mixer.
摘要翻译：数字IF解调器包括模拟数字（A / D）转换器，其接收模拟IF信号并将其转换为数字IF信号。然后并行乘法器将数字IF信号下变频为具有视频分量和音频分量的基带信号。降频转换使用由外部反馈环路驱动的并行乘法器，其校正所述数字IF信号中的总频率误差。数字IF解调器还包括视频恢复电路，其从基带信号中选择视频分量，并且使用由内部反馈环路驱动的视频复合混合器进一步将基带信号下变频到视频基带，该内部反馈环路校正视频中的快速相位扰动恢复电路。最后，数字IF解调器包括：（i）从并行乘法器接收所述基带信号的音频恢复电路，以及（ii）使用音频复合混频器将音频分量下变频为音频基带信号。

3. 发明授权

US08749316B2 Programmable varactor and methods of operation thereof 有权
标题翻译：可编程变容二极管及其操作方法
公开(公告)号：US08749316B2
公开(公告)日：2014-06-10
申请号：US12821071
申请日：2010-06-22
申请人： Rajagopalan Rangarajan , Ojas M Choksi
发明人： Rajagopalan Rangarajan , Ojas M Choksi
IPC分类号： H03B5/12 , H03B5/18 , H03C3/22
CPC分类号： H03J3/18 , H03H5/12 , H03J2200/36
摘要： Exemplary embodiments are directed to a programmable varactor device. A varactor device may include an input device configured to receive a tuning voltage and generate a bias voltage at least partially dependent on the tuning voltage. The varactor device may also include a varactor pair coupled to the input device and having a first variable capacitor and a second variable capacitor, wherein each of the first variable capacitor and a second variable capacitor are configured for operable coupling to each of the bias voltage and the tuning voltage.
摘要翻译：示例性实施例涉及可编程变容二极管装置。变容二极管器件可以包括被配置为接收调谐电压并且至少部分地依赖于调谐电压产生偏置电压的输入器件。可变电抗器装置还可以包括耦合到输入装置并具有第一可变电容器和第二可变电容器的变容二极管对，其中第一可变电容器和第二可变电容器中的每一个被配置为可操作地耦合到每个偏置电压和调谐电压。

4. 发明申请

US20100321137A1 PROGRAMMABLE VARACTOR AND METHODS OF OPERATION THEREOF 有权
标题翻译：可编程变量及其操作方法
公开(公告)号：US20100321137A1
公开(公告)日：2010-12-23
申请号：US12821071
申请日：2010-06-22
申请人： Rajagopalan Rangarajan , Ojas M. Choksi
发明人： Rajagopalan Rangarajan , Ojas M. Choksi
IPC分类号： H03H5/12
CPC分类号： H03J3/18 , H03H5/12 , H03J2200/36
摘要： Exemplary embodiments are directed to a programmable varactor device. A varactor device may include an input device configured to receive a tuning voltage and generate a bias voltage at least partially dependent on the tuning voltage. The varactor device may also include a varactor pair coupled to the input device and having a first variable capacitor and a second variable capacitor, wherein each of the first variable capacitor and a second variable capacitor are configured for operable coupling to each of the bias voltage and the tuning voltage.
摘要翻译：示例性实施例涉及可编程变容二极管装置。变容二极管器件可以包括被配置为接收调谐电压并且至少部分地依赖于调谐电压产生偏置电压的输入器件。可变电抗器装置还可以包括耦合到输入装置并具有第一可变电容器和第二可变电容器的变容二极管对，其中第一可变电容器和第二可变电容器中的每一个被配置为可操作地耦合到每个偏置电压和调谐电压。

5. 发明授权

US07834937B2 Digital IF demodulator 有权
标题翻译：数字中频解调器
公开(公告)号：US07834937B2
公开(公告)日：2010-11-16
申请号：US12076849
申请日：2008-03-24
申请人： Steven T. Jaffe
发明人： Steven T. Jaffe
IPC分类号： H04N5/455
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44 , H04N5/4401 , H04N7/035 , H04N21/426 , H04N21/4263 , H04N2005/91364
摘要： A digital IF demodulator includes an analog-to-digital (A/D) converter that receives an analog IF signal and converts it to a digital IF signal. A parallel multiplier then down-converts the digital IF signal to a baseband signal having a video component and an audio component. The frequency down-conversion uses a parallel multiplier driven by an outer feedback loop that corrects gross frequency errors in said digital IF signal. The digital IF demodulator also includes a video recovery circuit that selects the video component from the baseband signal and further down-converts the baseband signal to a video baseband using a video complex mixer driven by an inner feedback loop that corrects fast phase perturbations in the video recovery circuit. Finally, the digital IF demodulator includes an audio recovery circuit that (i) receives said baseband signal from the parallel multiplier, and (ii) down-converts the audio component to an audio baseband signal using an audio complex mixer.
摘要翻译：数字IF解调器包括模拟数字（A / D）转换器，其接收模拟IF信号并将其转换为数字IF信号。然后并行乘法器将数字IF信号下变频为具有视频分量和音频分量的基带信号。降频转换使用由外部反馈环路驱动的并行乘法器，其校正所述数字IF信号中的总频率误差。数字IF解调器还包括视频恢复电路，其从基带信号中选择视频分量，并且使用由内部反馈环路驱动的视频复合混合器进一步将基带信号下变频到视频基带，该内部反馈环路校正视频中的快速相位扰动恢复电路。最后，数字IF解调器包括：（i）从并行乘法器接收所述基带信号的音频恢复电路，以及（ii）使用音频复合混频器将音频分量下变频为音频基带信号。

6. 发明申请

US20080180578A1 Digital IF modulator 有权
标题翻译：数字IF调制器
公开(公告)号：US20080180578A1
公开(公告)日：2008-07-31
申请号：US12076849
申请日：2008-03-24
申请人： Steven T. Jaffe
发明人： Steven T. Jaffe
IPC分类号： H04N5/455
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44 , H04N5/4401 , H04N7/035 , H04N21/426 , H04N21/4263 , H04N2005/91364
摘要： A digital IF demodulator includes an analog-to-digital (A/D) converter that receives an analog IF signal and converts it to a digital IF signal. A parallel multiplier then down-converts the digital IF signal to a baseband signal having a video component and an audio component. The frequency down-conversion uses a parallel multiplier driven by an outer feedback loop that corrects gross frequency errors in said digital IF signal. The digital IF demodulator also includes a video recovery circuit that selects the video component from the baseband signal and further down-converts the baseband signal to a video baseband using a video complex mixer driven by an inner feedback loop that corrects fast phase perturbations in the video recovery circuit. Finally, the digital IF demodulator includes an audio recovery circuit that (i) receives said baseband signal from the parallel multiplier, and (ii) down-converts the audio component to an audio baseband signal using an audio complex mixer.
摘要翻译：数字IF解调器包括模拟数字（A / D）转换器，其接收模拟IF信号并将其转换为数字IF信号。然后并行乘法器将数字IF信号下变频为具有视频分量和音频分量的基带信号。降频转换使用由外部反馈环路驱动的并行乘法器，其校正所述数字IF信号中的总频率误差。数字IF解调器还包括视频恢复电路，其从基带信号中选择视频分量，并且使用由内部反馈环路驱动的视频复合混合器进一步将基带信号下变频到视频基带，该内部反馈环路校正视频中的快速相位扰动恢复电路。最后，数字IF解调器包括：（i）从并行乘法器接收所述基带信号的音频恢复电路，以及（ii）使用音频复合混频器将音频分量下变频为音频基带信号。

7. 发明授权

US07239357B2 Digital IF demodulator with carrier recovery 失效
标题翻译：带载波恢复的数字IF解调器
公开(公告)号：US07239357B2
公开(公告)日：2007-07-03
申请号：US10448062
申请日：2003-05-30
申请人： Steven T Jaffe
发明人： Steven T Jaffe
IPC分类号： H04N5/455
CPC分类号： H04N21/426 , H03D7/16 , H03J3/18 , H04N5/44 , H04N5/4401 , H04N5/455 , H04N7/035 , H04N21/4263 , H04N2005/91364
摘要： A digital IF demodulator receives and demodulates an analog IF input signal to produce a digital audio signal and a digital video signal. The digital IF demodulator includes an A/D converter, a first digital complex mixer, a second digital complex mixer, and various digital filters. The first digital complex mixer receives the output of the A/D converter and down-converts the output of the A/D converter to baseband. Additionally, the picture carrier is recovered from the output of the first digital complex mixer, and fed back to a direct digital synthesizer to control the tuning accuracy of the first digital complex mixer. More specifically, a feedback loop is formed to so that the picture carrier is down-converted to DC so as to control the tuning accuracy of the first digital complex mixer. The complex output of the first complex mixer is further processed using Nyquist filtering and other filtering to recover the digital video signal. The digital audio signal is recovered by further processing the output of the first digital complex mixer. With the picture carrier located at DC, the audio signal is shifted off DC by approximately 4.5 Mhz. A second complex mixer down-converts the output of the first digital complex mixer so that the audio signal at 4.5 MHz is down-converted to baseband. After filtering and demodulation, the digital audio signal is recovered.
摘要翻译：数字IF解调器接收并解调模拟IF输入信号以产生数字音频信号和数字视频信号。数字IF解调器包括A / D转换器，第一数字复合混频器，第二数字复合混频器和各种数字滤波器。第一个数字混合混频器接收A / D转换器的输出，并将A / D转换器的输出下变频为基带。此外，图像载体从第一数字复合混频器的输出恢复，并被反馈到直接数字合成器以控制第一数字复合混频器的调谐精度。更具体地，形成反馈环路，使得图像载波被下变频为DC，以便控制第一数字复合混频器的调谐精度。使用奈奎斯特滤波和其他滤波进一步处理第一复合混频器的复合输出以恢复数字视频信号。通过进一步处理第一数字复合混合器的输出来恢复数字音频信号。在图像载体位于DC处，音频信号从DC偏离大约4.5Mhz。第二复合混频器将第一数字复合混频器的输出降频转换，使得4.5MHz的音频信号被下变频到基带。滤波和解调后，数字音频信号被恢复。

8. 发明申请

US20170291495A1 Adjustable Capacitance Value For Tuning Oscillatory Systems 审中-公开
公开(公告)号：US20170291495A1
公开(公告)日：2017-10-12
申请号：US15513681
申请日：2015-09-15
申请人： Siemens Aktiengesellschaft
发明人： Manuel Blum , Thomas Komma , Mirjam Mantel , Monika Poebl
IPC分类号： B60L11/18 , H03J3/18
CPC分类号： B60L11/18 , B60L50/50 , B60L53/12 , H01G7/00 , H02J17/00 , H03J3/18 , H03J2200/10 , H03L7/185 , Y02T10/7005 , Y02T10/7072 , Y02T90/122 , Y02T90/14
摘要： The present disclosure relates to tuning oscillatory systems. The teachings thereof may be embodied in a device having an adjustable capacitance value for tuning a first oscillatory system, connectable to a second oscillatory system having an unknown and weak coupling factor. The device may include: a first capacitor having a capacitance dependent upon a voltage; and a DC voltage source having a variable voltage applied to associated terminals; a series-connected arrangement of the DC voltage source and a decoupling element connected in parallel with terminals of the capacitor, to apply a variable bias voltage to the first capacitor. The voltage applied to the terminals of the DC voltage source may depend at least in part on a working frequency of the first oscillatory system.

9. 发明授权

US08711288B2 Digital IF demodulator for video applications 有权
标题翻译：用于视频应用的数字IF解调器
公开(公告)号：US08711288B2
公开(公告)日：2014-04-29
申请号：US11516718
申请日：2006-09-07
申请人： Pieter Vorenkamp , Myles H. Wakayama , Steven Jaffe , Frank Carr , Arnoldus Venes , Peter R. Kinget , Daniel J. Marz , Thinh Nguyen
发明人： Pieter Vorenkamp , Myles H. Wakayama , Steven Jaffe , Frank Carr , Arnoldus Venes , Peter R. Kinget , Daniel J. Marz , Thinh Nguyen
IPC分类号： H04N5/44
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44
摘要： An integrated communications system. A substrate having a receiver disposed on the substrate for converting a received signal to an IF signal, a digital IF demodulator disposed on the substrate and coupled to the receiver for converting the IF signal to a demodulated baseband signal, and a transmitter disposed on the substrate operating in cooperation with the receiver to establish a two way communications path.
摘要翻译：综合通信系统。一种衬底，具有设置在衬底上的接收器，用于将接收信号转换成IF信号;数字IF解调器，设置在衬底上并耦合到接收器，用于将IF信号转换成解调的基带信号;以及发射器，设置在衬底上与接收方合作建立双向通信路径。

10. 发明授权

US07477326B2 HDTV chip with a single IF strip for handling analog and digital reception 有权
标题翻译： HDTV芯片，带有一个单芯IF带，用于处理模拟和数字接收
公开(公告)号：US07477326B2
公开(公告)日：2009-01-13
申请号：US11197735
申请日：2005-08-02
申请人： Steven Todd Jaffe
发明人： Steven Todd Jaffe
IPC分类号： H04N5/455
CPC分类号： H04N5/455 , H03D7/16 , H03J3/18 , H04N5/44 , H04N5/4401 , H04N7/035 , H04N21/426 , H04N21/4263 , H04N2005/91364
摘要： Methods and systems for processing television signals are disclosed herein, and may comprise communicating analog and digital intermediate frequency (IF) signals via a single processing path that couples a TV radio frequency (RF) tuner to an IF demodulator and/or to a decoder, that processes said analog and digital IF signals. The analog and digital IF signals may be filtered via a surface acoustic wave (SAW) filter, for example. The filtered analog and digital IF signals may be amplified. The amplified filtered analog and digital IF signals may be received. The amplified filtered analog and digital IF signals may be IF demodulated by the IF demodulator to generate an IF demodulated output signal. An audio portion of the IF demodulated output signal may be decoded via a BTSC decoder, for example.
摘要翻译：本文公开了用于处理电视信号的方法和系统，并且可以包括经由将TV射频（RF）调谐器耦合到IF解调器和/或解码器的单个处理路径来传送模拟和数字中频（IF）信号，处理所述模拟和数字IF信号。例如，可以经由表面声波（SAW）滤波器对模拟和数字IF信号进行滤波。滤波后的模拟和数字IF信号可以被放大。可以接收放大的经滤波的模拟和数字IF信号。放大的滤波模拟和数字IF信号可以由IF解调器进行IF解调，以产生IF解调输出信号。 IF解调输出信号的音频部分例如可以经由BTSC解码器进行解码。

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