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1. 发明公开

US20240283432A1 LOGARITHMIC DEMODULATOR FOR LASER WAVELENGTH-MODULATON SPECTROSCOPY 审中-公开
公开(公告)号：US20240283432A1
公开(公告)日：2024-08-22
申请号：US18644540
申请日：2024-04-24
申请人： SeekOps Inc.
发明人： Javad Rezanezhad Gatabi , Brendan James Smith
IPC分类号： H03H11/12 , H03H11/04
CPC分类号： H03H11/1291 , H03H11/1221 , H03H2011/0494
摘要： Systems, devices, and methods including a first band-pass filter configured to receive and filter a detector signal, where the first band-pass filter has a central frequency of 2f; a second band-pass filter configured to receive and filter the detector signal, where the second band-pass filter has a central frequency of 1f; a first logarithmic amplifier (Log Amp) configured to apply the filtered detector signal from the first band-pass filter; a second Log Amp configured to apply the filtered detector signal from the second band-pass filter; a differential amplifier configured to subtract the applied signal from the first Log Amp from the applied signal from the second Log Amp; and an Anti-Log Amplifier configured to determine an inverse logarithm of the subtracted signal from the differential amplifier.

2. 发明授权

US12028034B2 Accurate calibration of analog integrated-circuits continuous-time complex filters 有权
公开(公告)号：US12028034B2
公开(公告)日：2024-07-02
申请号：US17708863
申请日：2022-03-30
申请人： Synopsys, Inc.
发明人： Mohammed Tawfik Mahmoud Mohammed AbdelHafez
IPC分类号： H03H7/00 , H03H7/01 , H03H11/12 , H03M1/10 , H03H11/04
CPC分类号： H03H11/126 , H03H7/0153 , H03M1/1047 , H03H2007/0192 , H03H2011/0494
摘要： A first and second input tone are applied to a continuous-time complex filter within an integrated circuit. The magnitude of the output of the filter at the frequency of each of the first and second input tones are measured and compared to determine the value of a filter tuning control signal. A tuning control signal is applied to the filter with the determined value to tune the filter.

3. 发明申请

US20190013795A1 DIGITAL FILTERING FOR ANALOG GAIN/PHASE ERRORS 审中-公开
公开(公告)号：US20190013795A1
公开(公告)日：2019-01-10
申请号：US16005673
申请日：2018-06-11
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Jawaharlal Tangudu , KARTHIK KHANNA S , Chandrasekhar Sriram , Rajendrakumar Joish , Viswanathan Nagarajan
IPC分类号： H03H11/12 , H03H11/06 , H01P1/22
CPC分类号： H03H11/1204 , H01P1/22 , H03H11/06 , H03H17/02 , H03H2011/0494 , H03M1/12
摘要： A circuit for digital filtering an analog signal converted to digital, including an analog circuit to generate an analog signal, the analog signal including phase and/or gain errors. An analog-to-digital converter (ADC) to convert the analog signal to a digital signal output to a digital signal path. A frequency-dependent corrector filter included in the digital signal path, and configured as a parameterized filter, the parameterized filter configurable based on the DSA control signal with at least one complex filter parameter for each DSA attenuation step, to correct frequency-dependent errors in phase and/or gain.

4. 发明申请

US20170077903A1 COMPLEX BAND PASS FILTER AND RECEIVER 有权
标题翻译：复杂带通滤波器和接收器
公开(公告)号：US20170077903A1
公开(公告)日：2017-03-16
申请号：US15080695
申请日：2016-03-25
申请人： Kabushiki Kaisha Toshiba
发明人： Naotaka Koide
IPC分类号： H03H11/12 , H03F3/45 , H03F3/189
CPC分类号： H03H11/1217 , H03F3/189 , H03F3/195 , H03F3/211 , H03F3/45475 , H03F2200/336 , H03F2203/45138 , H03F2203/45526 , H03H2011/0494
摘要： According to one embodiment, in a complex band pass filter, a second input signal to be supplied to a second active filter circuit has a substantially 90 degree phase difference from a first input signal to be supplied to a first active filter circuit. The first feedback circuit includes a first element having a first impedance and feeds back an output signal of the first active filter circuit to input side of the second active filter circuit. The second feedback circuit includes a second element having a second impedance different from the first impedance and feeds back an output signal of the second active filter circuit to input side of the first active filter circuit. The output circuit outputs an output signal according to a signal from the first active filter circuit and to a signal from the second active filter circuit.
摘要翻译：根据一个实施例，在复带通滤波器中，要提供给第二有源滤波器电路的第二输入信号具有与要提供给第一有源滤波器电路的第一输入信号大致90度的相位差。第一反馈电路包括具有第一阻抗的第一元件并将第一有源滤波器电路的输出信号反馈到第二有源滤波器电路的输入侧。第二反馈电路包括具有不同于第一阻抗的第二阻抗的第二元件，并将第二有源滤波器电路的输出信号反馈到第一有源滤波器电路的输入侧。输出电路根据来自第一有源滤波器电路的信号和来自第二有源滤波器电路的信号输出输出信号。

5. 发明申请

US20160173063A1 ANALOG BASEBAND FILTERING APPARATUS OF MULTIMODE MULTIBAND WIRELESS TRANSCEIVER AND CONTROL METHOD THEREOF 有权
标题翻译：多模式无线收发器的模拟基带滤波器及其控制方法
公开(公告)号：US20160173063A1
公开(公告)日：2016-06-16
申请号：US14908067
申请日：2014-07-24
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Byungki HAN , Suseob AHN , Jongwoo LEE
IPC分类号： H03H11/12 , H03H11/04
CPC分类号： H03H11/12 , H03H7/24 , H03H11/0405 , H03H11/0455 , H03H11/1252 , H03H11/1291 , H03H2011/0494 , H03H2250/00 , H04L25/03
摘要： A filtering apparatus and method of a multimode multiband transceiver is provided for filtering a signal carrying an analog baseband signal. A filtering apparatus of a multimode multiband radio transceiver of the present invention includes a filtering unit which filters Radio Frequency (RF) signals on one of at least one frequency bands, a switching unit which switches the signals among at least one filter block included in the filtering unit according to a selected communication mode, and a controller which selects the communication mode and controls the switching unit. The analog signal filtering apparatus and method of the present invention is advantageous in terms of providing a variable gain amplifier, filter circuit, and algorithm capable of fulfilling the gains and bandwidths required by the baseband receiver for all mobile communication standards complied by 2G, 3G, and 4G systems.
摘要翻译：提供了一种多模多频收发器的滤波装置和方法，用于对携带模拟基带信号的信号进行滤波。本发明的多模多频带无线电收发器的滤波装置包括：滤波单元，其对至少一个频带中的一个频带上的射频（RF）信号进行滤波;切换单元，其在包括在所述至少一个频带中的至少一个滤波器块过滤单元，以及选择通信模式并控制切换单元的控制器。本发明的模拟信号滤波装置和方法在提供一种可变增益放大器，滤波器电路和算法方面是有利的，该可变增益放大器，滤波器电路和算法能够满足基带接收机对2G，3G所遵循的所有移动通信标准所需的增益和带宽，和4G系统。

6. 发明授权

US09306616B2 Analog baseband filter apparatus for multi-band and multi-mode wireless transceiver and method for controlling the filter apparatus 有权
公开(公告)号：US09306616B2
公开(公告)日：2016-04-05
申请号：US14638325
申请日：2015-03-04
申请人： Samsung Electronics Co., Ltd.
发明人： Jong-Woo Lee , Shin-Chul Kim , Su-Seob Ahn , Si-Bum Jun , Byung-Ki Han
IPC分类号： H04B1/401 , H03H11/12 , H04B1/12
CPC分类号： H04B1/401 , H03H11/1252 , H03H11/1291 , H03H2011/0494 , H03H2250/00 , H04B1/123 , H04B1/126
摘要： An analog baseband filter apparatus for a multi-mode and multi-band wireless transceiver and a method for controlling the analog baseband filter apparatus are provided. The analog baseband filter apparatus includes a plurality of Radio Frequency (RF) units, each of the plurality of RF units being for receiving RF signals of one of a plurality of frequency bands and outputting baseband signals, a plurality of filter blocks for filtering and amplifying the baseband signals, and a switching unit for connecting at least two of the plurality of RF units to at least one of the plurality of filter blocks according to a selected communication mode, wherein the at least one of the plurality of filter blocks is configured to be connected to a capacitor region of an adjacent filter block from among the plurality of filter blocks.

7. 发明授权

US09252743B2 Distributed polyphase filter 有权
标题翻译：分布式多相滤波器
公开(公告)号：US09252743B2
公开(公告)日：2016-02-02
申请号：US13630014
申请日：2012-09-28
申请人： Intel Corporation
发明人： Hongjiang Song
IPC分类号： H04L27/00 , H03H11/22 , H04W56/00 , H03H7/18 , H03H7/21 , H03H7/01 , H03H11/04
CPC分类号： H03H11/22 , G06F1/04 , G06F1/06 , H03H7/185 , H03H7/21 , H03H2007/0192 , H03H2011/0494 , H04W56/0035
摘要： In one embodiment, an apparatus includes a clock generator to generate differential clock signals. The apparatus also includes a distributed polyphase filter to obtain phase-corrected multi-phase clock signals based on the differential clock signals.
摘要翻译：在一个实施例中，一种装置包括用于产生差分时钟信号的时钟发生器。该装置还包括分布式多相滤波器，以基于差分时钟信号获得相位校正的多相时钟信号。

8. 发明申请

US20150214925A1 COMPLEX BAND PASS FILTER AND RECEIVER 有权
标题翻译：复杂带通滤波器和接收器
公开(公告)号：US20150214925A1
公开(公告)日：2015-07-30
申请号：US14464039
申请日：2014-08-20
申请人： Kabushiki Kaisha Toshiba
发明人： Yosuke Ogasawara
IPC分类号： H03H11/04 , H03H11/36 , H04B1/10
CPC分类号： H03H11/04 , H03H11/36 , H03H11/365 , H03H2011/0494 , H04B1/10 , H04B1/28
摘要： According to one embodiment, a complex band pass filter comprises a first active filter circuit 10 to receive a first input signal on its input end and a second active filter circuit 20 to receive a second input signal on its input end, the second input signal having a 90-degree phase difference from the first input signal. A predetermined offset is imparted to the first input signal and the second input signal through the first and second signal level adjusting units (30, 40). A differential signal between the output signals of the first and second active filter circuits (10, 20) is outputted.
摘要翻译：根据一个实施例，复带通滤波器包括：第一有源滤波器电路10，用于在其输入端接收第一输入信号;以及第二有源滤波器电路20，用于在其输入端接收第二输入信号，第二输入信号具有与第一输入信号的90度相位差。通过第一和第二信号电平调整单元（30,40）将预定的偏移量赋予第一输入信号和第二输入信号。输出第一和第二有源滤波器电路（10,20）的输出信号之间的差分信号。

9. 发明申请

US20150180532A1 ANALOG BASEBAND FILTER APPARATUS FOR MULTI-BAND AND MULTI-MODE WIRELESS TRANSCEIVER AND METHOD FOR CONTROLLING THE FILTER APPARATUS 审中-公开
标题翻译：用于多带和多模无线收发器的模拟基带滤波器装置和用于控制滤波器的方法
公开(公告)号：US20150180532A1
公开(公告)日：2015-06-25
申请号：US14638325
申请日：2015-03-04
申请人： Samsung Electronics Co., Ltd.
发明人： Jong-Woo LEE , Shin-Chul KIM , Su-Seob AHN , Si-Bum JUN , Byung-Ki HAN
IPC分类号： H04B1/401 , H04B1/12
CPC分类号： H04B1/401 , H03H11/1252 , H03H11/1291 , H03H2011/0494 , H03H2250/00 , H04B1/123 , H04B1/126
摘要： An analog baseband filter apparatus for a multi-mode and multi-band wireless transceiver and a method for controlling the analog baseband filter apparatus are provided. The analog baseband filter apparatus includes a plurality of Radio Frequency (RF) units, each of the plurality of RF units being for receiving RF signals of one of a plurality of frequency bands and outputting baseband signals, a plurality of filter blocks for filtering and amplifying the baseband signals, and a switching unit for connecting at least two of the plurality of RF units to at least one of the plurality of filter blocks according to a selected communication mode, wherein the at least one of the plurality of filter blocks is configured to be connected to a capacitor region of an adjacent filter block from among the plurality of filter blocks.
摘要翻译：提供了一种用于多模和多频无线收发器的模拟基带滤波装置和一种用于控制模拟基带滤波装置的方法。模拟基带滤波器装置包括多个射频单元，多个RF单元中的每一个用于接收多个频带之一的RF信号并输出基带信号，多个用于滤波和放大的滤波器块所述基带信号以及用于根据所选择的通信模式将所述多个RF单元中的至少两个RF单元连接到所述多个滤波块中的至少一个的切换单元，其中，所述多个滤波块中的至少一个被配置为连接到多个滤波器块中的相邻滤波器块的电容器区域。

10. 发明申请

US20120288045A1 SIGNAL RECEIVING APPARATUS AND METHOD OF CONTROLLING FILTERS IN SIGNAL RECEIVING APPARATUS 审中-公开
标题翻译：信号接收装置和控制信号接收装置中的滤波器的方法
公开(公告)号：US20120288045A1
公开(公告)日：2012-11-15
申请号：US13468480
申请日：2012-05-10
申请人： Seiji NAKANISHI
发明人： Seiji NAKANISHI
IPC分类号： H04B1/10
CPC分类号： H04B1/1036 , H03H11/1291 , H03H2011/0494 , H03H2210/012 , H03H2210/015 , H03H2210/025 , H03H2210/028 , H03H2210/036
摘要： A signal receiving device receives an incoming signal to obtain a frequency signal. The signal receiving device has a multi-filter device. The frequency signal is subjected to frequency selection processing by using the multi-filter device. The multi-filter device has a plurality of filters whose frequency characteristics are different from each other. The filters are connected in series. If the received signal intensity is higher than prescribed threshold intensity, the center frequency of at least one of the filters in the multi-filter device is biased.
摘要翻译：信号接收装置接收输入信号以获得频率信号。信号接收装置具有多滤波器装置。通过使用多滤波器装置对频率信号进行频率选择处理。多滤波器装置具有频率特性彼此不同的多个滤波器。滤波器串联连接。如果接收信号强度高于规定的阈值强度，则多滤波器装置中的至少一个滤波器的中心频率是偏置的。

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