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公开(公告)号：US11929766B2
公开(公告)日：2024-03-12
申请号：US17659468
申请日：2022-04-15
CPC分类号： H04B1/0007 , H04B1/0053 , H04B1/403 , H04B1/588
摘要： According to embodiments, an example method for determining an analog-to-digital converter (ADC) output timing in a user equipment may include operating a switch in a first mode to route a system clock from an oscillator to an input of the ADC and determining a first ADC output timing based on a first set of ADC samples generated by the ADC. The method may also include operating the switch in a second mode to route analog signals from a transceiver of the user equipment to the input of the ADC and obtaining a second set of ADC samples generated by the ADC based on the analog signals.
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公开(公告)号：US11863144B2
公开(公告)日：2024-01-02
申请号：US17652716
申请日：2022-02-28
IPC分类号： H03G3/30 , H04B1/10 , H04B1/16 , H04B17/318 , H04B1/26
CPC分类号： H03G3/3036 , H04B1/10 , H04B1/1607 , H04B1/26 , H04B17/318
摘要： Apparatus and methods for non-invasively monitoring an oscillation signal in an effort to provide a more reliable oscillation signal. An example oscillation circuit generally includes an oscillator configured to generate an oscillation signal, the oscillator comprising an oscillator core circuit for coupling to a resonator and configured to generate the oscillation signal to enable the resonator to resonate and an adjustable current source coupled to the oscillator core circuit and configured to control an amplitude of the oscillation signal; a first automatic gain control (AGC) circuit having an input coupled to an output of the oscillator and having an output coupled to a control input of the adjustable current source; a second AGC circuit configured to replicate the first AGC circuit; and logic having a first input coupled to the output of the first AGC circuit and having a second input coupled to an output of the second AGC circuit.
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公开(公告)号：US11774478B2
公开(公告)日：2023-10-03
申请号：US17407694
申请日：2021-08-20
摘要： Systems, devices, computer-implemented methods, and/or computer program products that facilitate low power, wideband multitone generation. In one example, a multitone generator device can comprise a controller operatively coupled to first and second digital-to-analog converters (DACs). The controller can apply different delays of a sampling signal to the first and second DACs to facilitate sideband suppression of signals output by the first and second DACs. One aspect of such a multitone generator device is that the multitone generator device can facilitate low power, wideband multitone generation.
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公开(公告)号：US11677433B2
公开(公告)日：2023-06-13
申请号：US16152391
申请日：2018-10-04
申请人： MEDIATEK INC.
发明人： Jui-Lin Hsu , Chao-Ching Hung , Tzu-Chin Lin , Wei-Hsiu Hsu , Yu-Li Hsueh , Jing-Hong Conan Zhan , Chih-Ming Hung
CPC分类号： H04B1/403 , G01S7/03 , G01S7/032 , H03B5/12 , H03K5/135 , H04B7/2662 , H03B2200/008
摘要： A wireless system includes an active oscillator and a front-end circuit. The active oscillator is used to generate and output a reference clock. The active oscillator includes at least one active component, and does not include an electromechanical resonator. The front-end circuit is used to process a transmit (TX) signal or a receive (RX) signal according to a local oscillator (LO) signal. The LO signal is derived from the reference clock.
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公开(公告)号：US11664766B2
公开(公告)日：2023-05-30
申请号：US17845666
申请日：2022-06-21
申请人： Apple Inc.
发明人： Feng Zhao , Utku Seckin
CPC分类号： H03D7/1466 , H03B5/1265 , H03D7/1458 , H04B1/10 , H04B15/005
摘要： An electronic device may include wireless circuitry with a baseband processor, a transceiver, a front-end module, and an antenna. The transceiver may include mixer circuitry. The mixer circuitry may include switches controlled by oscillator signals. The mixer circuitry may also include oscillator phase noise cancelling capacitors controlled by inverted oscillator signals. Operated in this way, the mixer circuitry exhibits improved noise figure performance.
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公开(公告)号：US20230145524A1
公开(公告)日：2023-05-11
申请号：US17454383
申请日：2021-11-10
申请人： Know Labs, Inc.
CPC分类号： G01N33/5308 , A61B5/14532 , A61B5/14546 , H04B1/26 , H01Q1/247 , G01N22/00
摘要： A non-invasive analyte sensor includes a receive side with a superheterodyne circuit. The superheterodyne circuit include a mixer with an input that is electrically connected to a receive antenna, and a radio frequency generator connected to another input of the mixer and that is configured to generate a radio frequency signal. The mixer outputs a signal that is based on a frequency of a signal received by the receive antenna and the frequency of the signal generated by the radio frequency generator.
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公开(公告)号：US20230101719A1
公开(公告)日：2023-03-30
申请号：US17857658
申请日：2022-07-05
发明人： Arnaud CASAGRANDE , Jean-Luc AREND
摘要： A correction method (500) for a super-regenerative receiver (100) being configured to resonate at at least one oscillator resonant frequency reference value (111) and comprising at least one control stage (130), at least one varactor (140), at least one reference system (150) and, at least one oscillator (110). The method includes at least one setup (510) of at least one reference signal value (158) by the at least one reference system (150), at least one comparison (560) of at least one oscillator frequency actual value (112) of the at least one oscillator (110) with the at least one reference signal value (158) by the at least one reference system (150) and at least one adjustment (570) of at least one gain of the at least one control stage (130).
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公开(公告)号：US11611363B2
公开(公告)日：2023-03-21
申请号：US17274612
申请日：2019-09-09
摘要： A radio module is configured to operate within a specialized frequency band, for example a band that has recently become available for use in the public domain. Superheterodyne techniques are used by a transmitter component of the radio module to frequency shift a conventional wireless data signal (e.g., used for WiFi, LTE telecommunications, etc.) into a designated band; a receiver component of the radio module is similarly configured to receive signals transmitted on the designated band and shift back into the conventional RF band (where standard components are able to further process the received signal).
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公开(公告)号：US20220376731A1
公开(公告)日：2022-11-24
申请号：US17324378
申请日：2021-05-19
发明人： Jinbo LI , Sean Joel LYN , Ara BICAKCI
摘要： A transceiver circuit includes transmit circuitry comprising a transmit baseband filter and a driver amplifier having an output coupled to a power amplifier, receive circuitry comprising a low noise amplifier and a receive baseband filter, mixer circuitry and a magnetic circuit, wherein the mixer circuitry and the magnetic circuit are coupled between the transmit baseband filter and the driver amplifier, and are further coupled between the low noise amplifier and the receive baseband filter, wherein the mixer circuitry and the magnetic circuit are shared between the transmit circuitry and the receive circuitry in a time division duplexing (TDD) communication system.
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公开(公告)号：US20220209797A1
公开(公告)日：2022-06-30
申请号：US17606546
申请日：2020-04-27
发明人： Toshihiro YAMAGUCHI , Hiroshi SHONO
摘要： The present technology relates to a semiconductor chip and a receiving apparatus capable of suppressing increases in size and cost due to circuit complexity.
A tuner includes an RF input terminal to which an RF signal of terrestrial broadcasting is input, a first-IF input terminal to which a first-IF signal of satellite digital broadcasting is input, a first filter that filters a signal in a frequency band lower than a predetermined frequency, a second filter that filters a signal in a frequency band equal to or higher than the predetermined frequency, and a switch that causes the RF signal to be input to the first filter or to the second filter by switching according to a frequency of the RF signal, and causes the first-IF signal to be input to the first filter or to the second filter by switching according to a frequency of the first-IF signal. The present technology may be applied to a broadcast receiving system.
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