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1.发明公开公开(公告)号：US20230421191A1
公开(公告)日：2023-12-28
申请号：US17897637
申请日：2022-08-29
Applicant: Silicon Laboratories Inc.
Inventor： Thomas Edward Voor , Jeffrey L. Sonntag , Richard Hendricks , Logan Lucas , Jeffrey Merrill , Hendricus De Ruijter , Luigi Panseri
IPC: H04B1/16 , H04B17/318
CPC classification number: H04B1/16 , H04B17/318
Abstract: In one aspect, a method comprises: comparing, in a comparator, a signal level of a receive radio frequency (RF) signal to a first threshold, the receive RF signal obtained from a controllable location in an RF front end circuit; and in response to the signal level of the receive RF signal exceeding the first threshold, causing the RF front end circuit to be reconfigured from a first mode in which an input to a low noise amplifier (LNA) is coupled an antenna to a second mode in which the input to the LNA is coupled to an RF filter.
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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：US20240063841A1
公开(公告)日：2024-02-22
申请号：US17851534
申请日：2022-06-28
Applicant: Silicon Laboratories Inc.
Inventor： Thomas Edward Voor , Jeffrey L. Sonntag , Luigi Panseri
IPC: H04B1/44
CPC classification number: H04B1/44
Abstract: In one embodiment, an apparatus includes: a transmit path to receive, process and output a transmit radio frequency (RF) signal, the transmit path including a first power amplifier; a receive path to receive, process and output a receive RF signal, the receive path including a first low noise amplifier (LNA); and switching circuitry coupled to the transmit path and the receive path. In a transmit mode, the switching circuitry is to cause a RF filter to couple into the transmit path to filter the transmit RF signal and cause the filtered transmit RF signal to be provided to the first power amplifier and thereafter to an antenna. In a receive mode, the switching circuitry is to cause the receive RF signal to be provided to the RF filter and the first LNA, and thereafter to be provided to a digital processor.
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公开(公告)号：US11683012B2
公开(公告)日：2023-06-20
申请号：US17587678
申请日：2022-01-28
Applicant: Silicon Laboratories Inc.
Inventor： Luigi Panseri , Mustafa H. Koroglu , Praveen Vangala , John M. Khoury
CPC classification number: H03F1/0216 , H03F1/3205 , H03F3/245 , H04B1/40 , H03F2200/451 , H03F2201/3215
Abstract: An apparatus includes a radio-frequency (RF) circuit, which includes a power amplifier coupled to receive an RF input signal and to provide an RF output signal in response to a modified bias signal. The RF circuit further includes a bias path circuit coupled to modify a bias signal as a function of a characteristic of an input signal to generate the modified bias signal. The bias path circuit provides the modified bias signal to the power amplifier.
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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：US12218702B2
公开(公告)日：2025-02-04
申请号：US17851534
申请日：2022-06-28
Applicant: Silicon Laboratories Inc.
Inventor： Thomas Edward Voor , Jeffrey L Sonntag , Luigi Panseri
IPC: H04B1/44
Abstract: In one embodiment, an apparatus includes: a transmit path to receive, process and output a transmit radio frequency (RF) signal, the transmit path including a first power amplifier; a receive path to receive, process and output a receive RF signal, the receive path including a first low noise amplifier (LNA); and switching circuitry coupled to the transmit path and the receive path. In a transmit mode, the switching circuitry is to cause a RF filter to couple into the transmit path to filter the transmit RF signal and cause the filtered transmit RF signal to be provided to the first power amplifier and thereafter to an antenna. In a receive mode, the switching circuitry is to cause the receive RF signal to be provided to the RF filter and the first LNA, and thereafter to be provided to a digital processor.
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公开(公告)号：US11552606B2
公开(公告)日：2023-01-10
申请号：US17241220
申请日：2021-04-27
Applicant: Silicon Laboratories Inc.
Inventor： Luigi Panseri
Abstract: A power limiting system and method for a low noise amplifier of a front end interface of a radio frequency communication device. A voltage regulator provides a source voltage to the low noise amplifier having a nominal voltage level that optimizes linearity of the low noise amplifier while a power level of a radio frequency input signal provided to an input of the low noise amplifier does not exceed a predetermined power level threshold. Detection circuitry detects when the power level of a radio frequency input signal exceeds the predetermined power level threshold and provides an adjust signal indicative thereof to the voltage regulator to reduce the source voltage below the nominal voltage level.
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公开(公告)号：US11316482B2
公开(公告)日：2022-04-26
申请号：US16904811
申请日：2020-06-18
Applicant: Silicon Laboratories Inc.
Inventor： Luigi Panseri , Mustafa Koroglu , Emmanuel Gautier , Pascal Blouin
Abstract: In an embodiment, an apparatus includes: a modulator to modulate a first signal; a distortion circuit coupled to the modulator to digitally pre-distort the first signal to compensate for a distortion of an amplifier; a distortion characterization circuit coupled to the distortion circuit to determine the distortion of the amplifier and configure the distortion circuit based on the determined distortion; a mixer coupled to the distortion circuit to upconvert the pre-distorted first signal to a pre-distorted radio frequency (RF) signal; and the amplifier coupled to the mixer to amplify the pre-distorted RF signal and output an amplified RF signal.
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公开(公告)号：US11239799B2
公开(公告)日：2022-02-01
申请号：US16661174
申请日：2019-10-23
Applicant: Silicon Laboratories Inc.
Inventor： Luigi Panseri , Mustafa H. Koroglu , Praveen Vangala , John M. Khoury
Abstract: An apparatus includes a radio-frequency (RF) circuit, which includes a power amplifier coupled to receive an RF input signal and to provide an RF output signal in response to a modified bias signal. The RF circuit further includes a bias path circuit coupled to modify a bias signal as a function of a characteristic of an input signal to generate the modified bias signal. The bias path circuit provides the modified bias signal to the power amplifier.
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公开(公告)号：US20230421194A1
公开(公告)日：2023-12-28
申请号：US17897620
申请日：2022-08-29
Applicant: Silicon Laboratories Inc.
Inventor： Thomas Edward Voor , Jeffrey L. Sonntag , Richard Hendricks , Logan Lucas , Hendricus De Ruijter , Luigi Panseri
CPC classification number: H04B1/18 , H04B1/10 , H04B1/1607
Abstract: In one aspect, an apparatus includes a receive path to receive, process and output a receive radio frequency (RF) signal, the receive path comprising at least one low noise amplifier (LNA) and a plurality of signal nodes. The receive path may be configurable to operate in a plurality of modes. The apparatus also may include at least one filter to filter the receive RF signal and at least one detector circuit to detect one or more levels present at one or more of the plurality of signal nodes. The apparatus may configure an order of the at least one LNA and the at least one filter, based at least in part on the one or more levels detected in the at least one detector circuit.
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