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公开(公告)号：US10033421B2
公开(公告)日：2018-07-24
申请号：US15168318
申请日：2016-05-31
Applicant: Silicon Laboratories Inc.
Inventor： Vitor Pereira , Mustafa Koroglu , Ruifeng Sun , Ramin Khoini-Poorfard , Abdulkerim Coban , Yu Su , Krishna Pentakota
Abstract: In one example, a semiconductor die includes multi-standard, multi-channel expandable television/satellite receiver that can be flexibly implemented in a number of different configurations to enable incorporation into a plurality of different systems. The semiconductor die may include multiple tuners to receive and tune a terrestrial radio frequency (RF) signal and a satellite RF signal. These tuners may include different frequency synthesizers including voltage controlled oscillators (VCOs) to generate VCO signals at different frequencies, mixers to downconvert the RF signals to baseband signals using the VCO signals. In an implementation, the semiconductor die may further include shared circuitry coupled to the tuners to digitize, process and demodulate the baseband signals.
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公开(公告)号：US20150147991A1
公开(公告)日：2015-05-28
申请号：US14612232
申请日：2015-02-02
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa H. Koroglu , Yu Su
CPC classification number: H04B1/005 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/171 , H03F2200/294 , H03F2200/451 , H03H7/0169 , H03H7/09 , H03H7/46 , H03H11/1291 , H03H2210/025 , H03H2210/033 , H03J3/10 , H03J2200/32 , H04B1/16 , H04B1/1638 , H04B1/18
Abstract: A receiver includes a first amplifier having an input for receiving an RF signal, and an output for providing an amplified RF signal, a switch section that selectively switches the amplified RF signal onto a selected one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal. The first variable capacitor has a capacitance that varies in response to a tuning signal. The inductance leg includes a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.
Abstract translation: 接收机包括具有用于接收RF信号的输入端的第一放大器和用于提供放大的RF信号的输出端，用于选择性地将放大的RF信号切换到多个节点中选定的一个节点的开关部分，以及包括 耦合到所述多个节点中的相应节点的多个滤波器。 多个滤波器的第一滤波器包括与多个节点中的相应一个节点之间的电感腿和电源电压端子并联耦合的第一可变电容器。 第一可变电容器具有响应于调谐信号而变化的电容。 电感腿包括与有效电阻串联的第一电感器，其中有效电阻具有与要由第一滤波器调谐的上截止频率相关的值。
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公开(公告)号：US20140361838A1
公开(公告)日：2014-12-11
申请号：US13910392
申请日：2013-06-05
Applicant: Silicon Laboratories Inc.
Inventor： Yu Su , Mustafa H. Koroglu , Ruifeng Sun , Krishna Pentakota , Pio Balmelli , Ramin Khoini-Poorfard
Abstract: An amplifier includes a negative gain amplifier, a load element, and a transconductance device. The negative gain amplifier has an input and an output. The load element has a first terminal coupled to a power supply voltage terminal, and a second terminal. The transconductance device has a first current electrode coupled to the second terminal of the load element, a control electrode coupled to the output of the negative gain amplifier, and a second current electrode coupled to the input of the negative gain amplifier.
Abstract translation: 放大器包括负增益放大器，负载元件和跨导器件。 负增益放大器具有输入和输出。 负载元件具有耦合到电源电压端子的第一端子和第二端子。 跨导器件具有耦合到负载元件的第二端子的第一电流电极，耦合到负增益放大器的输出的控制电极和耦合到负增益放大器的输入的第二电流电极。
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公开(公告)号：US11811446B2
公开(公告)日：2023-11-07
申请号：US17241202
申请日：2021-04-27
Applicant: Silicon Laboratories, Inc.
Inventor： Luigi Panseri , Yu Su , Mustafa H. Koroglu
CPC classification number: H04B1/40 , H03F3/19 , H03F2200/294 , H03F2200/451
Abstract: A bias circuit for a low noise amplifier of a front end interface of a radio frequency communication device including a bias generator providing a bias voltage on a bias node for the low noise amplifier, a first resistive device coupled between the bias node and an input of the low noise amplifier, a first switch coupled in parallel with the first resistive device, and mode control circuitry receiving a mode signal indicative of a mode change, in which the mode control circuitry, in response to a mode change, momentarily activates the first switch to bypass the first resistive device and momentarily increases current capacity of the bias generator. The mode control circuitry may also momentarily activate a second switch to bypass a second resistive device of the bias circuit. The mode control circuitry may increase a sink current of the bias generator in response to the mode change.
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公开(公告)号：US20220345170A1
公开(公告)日：2022-10-27
申请号：US17241202
申请日：2021-04-27
Applicant: Silicon Laboratories, Inc.
Inventor： Luigi Panseri , Yu Su , Mustafa H. Koroglu
Abstract: A bias circuit for a low noise amplifier of a front end interface of a radio frequency communication device including a bias generator providing a bias voltage on a bias node for the low noise amplifier, a first resistive device coupled between the bias node and an input of the low noise amplifier, a first switch coupled in parallel with the first resistive device, and mode control circuitry receiving a mode signal indicative of a mode change, in which the mode control circuitry, in response to a mode change, momentarily activates the first switch to bypass the first resistive device and momentarily increases current capacity of the bias generator. The mode control circuitry may also momentarily activate a second switch to bypass a second resistive device of the bias circuit. The mode control circuitry may increase a sink current of the bias generator in response to the mode change.
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Patent Agency Ranking
公开(公告)号：US09479199B2
公开(公告)日：2016-10-25
申请号：US14930139
申请日：2015-11-02
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa H. Koroglu , Yu Su
IPC: H04B1/18 , H04B1/00 , H03J3/10 , H04B1/16 , H03H7/01 , H03H7/46 , H03H11/12 , H03F3/19 , H03F1/56 , H03F3/193 , H03H7/09
CPC classification number: H04B1/005 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/171 , H03F2200/294 , H03F2200/451 , H03H7/0169 , H03H7/09 , H03H7/46 , H03H11/1291 , H03H2210/025 , H03H2210/033 , H03J3/10 , H03J2200/32 , H04B1/16 , H04B1/1638 , H04B1/18
Abstract: A receiver includes a first amplifier having an input for receiving a radio frequency (RF) signal, and an output for providing an amplified RF signal, a switch section for selectively switching the RF signal onto one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal, wherein the first variable capacitor has a capacitance that varies in response to a tuning signal, and the inductance leg comprises a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.
Abstract translation: 接收机包括具有用于接收射频（RF）信号的输入端和用于提供放大的RF信号的输出的第一放大器，用于选择性地将RF信号切换到多个节点之一的开关部分，以及滤波器部分 包括耦合到所述多个节点中的相应节点的多个滤波器。 多个滤波器的第一滤波器包括与多个节点中的相应一个节点之间的电感支路并联耦合的第一可变电容器和电源电压端子，其中第一可变电容器具有响应于 调谐信号，并且电感腿包括与有效电阻串联的第一电感器，其中有效电阻具有与要由第一滤波器调谐的上截止频率相关的值。
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公开(公告)号：US09231579B2
公开(公告)日：2016-01-05
申请号：US14074241
申请日：2013-11-07
Applicant: SILICON LABORATORIES INC.
Inventor： Ruifeng Sun , Mustafa H. Koroglu , Ramin Khoini Poorfard , Yu Su , Krishna Pentakota , Pio Balmelli
CPC classification number: H03K17/16 , H03K2217/0063
Abstract: Techniques relating to buffer circuits. In one embodiment, a circuit includes a first transistor configured as a source follower and a feed-forward path coupled to the gate terminal of the first transistor and the drain terminal of the first transistor. In this embodiment, the feed-forward path includes circuitry configured to decouple the feed-forward path from a DC component of an input signal to the gate terminal of the first transistor. In this embodiment, the circuitry is configured to reduce a drain-source voltage of the first transistor based on the input signal. In some embodiment, the feed-forward path includes a second transistor configured as a source follower and the source terminal of the second transistor is coupled to the drain terminal of the first transistor. In various embodiments, reducing the drain-source voltage may improve linearity of the first transistor.
Abstract translation: 与缓冲电路有关的技术。 在一个实施例中，电路包括配置为源极跟随器的第一晶体管和耦合到第一晶体管的栅极端子和第一晶体管的漏极端子的前馈通路。 在该实施例中，前馈路径包括被配置为将前馈路径与输入信号的DC分量去耦到第一晶体管的栅极端子的电路。 在该实施例中，电路被配置为基于输入信号来减小第一晶体管的漏 - 源电压。 在一些实施例中，前馈路径包括配置为源极跟随器的第二晶体管，并且第二晶体管的源极端子耦合到第一晶体管的漏极端子。 在各种实施例中，减小漏极 - 源极电压可以提高第一晶体管的线性。
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公开(公告)号：US09209838B2
公开(公告)日：2015-12-08
申请号：US14612232
申请日：2015-02-02
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa H. Koroglu , Yu Su
IPC: H04B1/18 , H04B1/00 , H03J3/10 , H04B1/16 , H03H7/01 , H03H7/46 , H03H11/12 , H03F3/19 , H03H7/09
CPC classification number: H04B1/005 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/171 , H03F2200/294 , H03F2200/451 , H03H7/0169 , H03H7/09 , H03H7/46 , H03H11/1291 , H03H2210/025 , H03H2210/033 , H03J3/10 , H03J2200/32 , H04B1/16 , H04B1/1638 , H04B1/18
Abstract: A receiver includes a first amplifier having an input for receiving an RF signal, and an output for providing an amplified RF signal, a switch section that selectively switches the amplified RF signal onto a selected one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal. The first variable capacitor has a capacitance that varies in response to a tuning signal. The inductance leg includes a first inductor in series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.
Abstract translation: 接收机包括具有用于接收RF信号的输入端的第一放大器和用于提供放大的RF信号的输出端，用于选择性地将放大的RF信号切换到多个节点中选定的一个节点的开关部分，以及包括 耦合到所述多个节点中的相应节点的多个滤波器。 多个滤波器的第一滤波器包括与多个节点中的相应一个节点之间的电感腿和电源电压端子并联耦合的第一可变电容器。 第一可变电容器具有响应于调谐信号而变化的电容。 电感腿包括与有效电阻串联的第一电感器，其中有效电阻具有与要由第一滤波器调谐的上截止频率相关的值。
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公开(公告)号：US11190147B1
公开(公告)日：2021-11-30
申请号：US16904821
申请日：2020-06-18
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa Koroglu , Luigi Panseri , Yu Su , Vitor Pereira
Abstract: In one embodiment, an apparatus includes: a digital baseband circuit to receive a digital baseband signal and output a first digital baseband signal and a second digital baseband signal, the second digital baseband signal comprising a scaled version of the first digital baseband signal; a first transmitter signal path coupled to the digital baseband circuit to process the first digital baseband signal and output a first radio frequency (RF) signal; a second transmitter signal path coupled to the digital baseband circuit to process the second digital baseband signal and output a second RF signal; a first power amplifier coupled to the first transmitter signal path to amplify the first RF signal and output an amplified first RF signal; and a second power amplifier coupled to the second transmitter signal path to amplify the second RF signal and output an amplified second RF signal.
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公开(公告)号：US20160056845A1
公开(公告)日：2016-02-25
申请号：US14930139
申请日：2015-11-02
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa H. Koroglu , Yu Su
CPC classification number: H04B1/005 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/171 , H03F2200/294 , H03F2200/451 , H03H7/0169 , H03H7/09 , H03H7/46 , H03H11/1291 , H03H2210/025 , H03H2210/033 , H03J3/10 , H03J2200/32 , H04B1/16 , H04B1/1638 , H04B1/18
Abstract: A receiver includes a first amplifier having an input for receiving a radio frequency (RF) signal, and an output for providing an amplified RF signal, a switch section for selectively switching the RF signal onto one of a plurality of nodes, and a filter section comprising a plurality of filters coupled to respective ones of the plurality of nodes. A first filter of the plurality of filters comprises a first variable capacitor coupled in parallel with an inductance leg between a corresponding one of the plurality of nodes and a power supply voltage terminal, wherein the first variable capacitor has a capacitance that varies in response to a tuning signal, and the inductance leg comprises a first inductorin series with an effective resistance, wherein the effective resistance has a value related to an upper cutoff frequency to be tuned by the first filter.
Abstract translation: 接收机包括具有用于接收射频（RF）信号的输入端和用于提供放大的RF信号的输出的第一放大器，用于选择性地将RF信号切换到多个节点之一的开关部分，以及滤波器部分 包括耦合到所述多个节点中的相应节点的多个滤波器。 多个滤波器的第一滤波器包括与多个节点中的相应一个节点之间的电感支路并联耦合的第一可变电容器和电源电压端子，其中第一可变电容器具有响应于 调谐信号，并且电感腿包括具有有效电阻的第一电感器串联，其中有效电阻具有与要由第一滤波器调谐的上截止频率相关的值。
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