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公开(公告)号：US20200243304A1
公开(公告)日：2020-07-30
申请号：US16847492
申请日：2020-04-13
IPC分类号： H01J37/32 , H01J37/244 , H03J7/00 , H05H1/46
摘要： Systems and methods for adjusting power and frequency based on three or more states are described. One of the methods includes receiving a pulsed signal having multiple states. The pulsed signal is received by multiple radio frequency (RF) generators. When the pulsed signal having a first state is received, an RF signal having a pre-set power level is generated by a first RF generator and an RF signal having a pre-set power level is generated by a second RF generator. Moreover, when the pulsed signal having a second state is received, RF signals having pre-set power levels are generated by the first and second RF generators. Furthermore, when the pulsed signal having a third state is received, RF signals having pre-set power levels are generated by the first and second RF generators.
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公开(公告)号：US10715209B2
公开(公告)日：2020-07-14
申请号：US15217816
申请日：2016-07-22
申请人： RFMicron, Inc.
发明人： Shahriar Rokhsaz
摘要： A method includes a computing device transmitting a radio frequency (RF) signal to a passive wireless sensor. The RF signal includes a carrier frequency signal and a modulated sense request signal. The method further includes, in response to the modulated sense request signal, receiving, by the computing device, a response RF signal that includes the carrier frequency signal and a coded sense response signal from the passive wireless sensor. The coded sense response signal is representative of a sensed environmental condition by the passive wireless sensor. The method further includes generating, by the computing device, an environmental condition value based on the coded sense response signal and an environmental conversion information.
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公开(公告)号：US10666193B2
公开(公告)日：2020-05-26
申请号：US16322288
申请日：2016-08-23
发明人： Andreas Kämpe
摘要： A biasing circuit for biasing a switching transistor, wherein the switching transistor is used for switching a respective capacitor cell into/out of a capacitor array, wherein the capacitor array comprises one or more such capacitor cells, and wherein the capacitor array is coupled in parallel with a primary inductor to form an inductive/capacitive tank. The biasing circuit comprises a secondary inductor which is inductively coupled to the primary inductor, the secondary inductor configured to provide a bias signal for biasing the switching transistor.
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公开(公告)号：US20200160007A1
公开(公告)日：2020-05-21
申请号：US16773595
申请日：2020-01-27
申请人： RFMicron, Inc.
摘要： A method includes sending, by a reader, a radio frequency (RF) signal to a wireless sensor that includes an antenna having a tail section and a head section. The tail section is for placement in an RF limited area for sensing moisture in a first location of a vehicle under test and wherein the head section is for placement in a non-RF limited area. The method further includes receiving, by the reader, an RF response to the RF signal from the wireless sensor. The first RF response includes an indication of adjustment of one or more RF characteristics of the wireless sensor, which corresponds to a variance of the one or more RF characteristics from a desired value, which, in turn, corresponds to a level of moisture at the first location. The method further includes outputting, by the reader, a message regarding the level of moisture at the first location.
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公开(公告)号：US20200083869A1
公开(公告)日：2020-03-12
申请号：US16681675
申请日：2019-11-12
发明人： Osama KHAN , Kristofer Pister
摘要： A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from slave node and the master node at the tuned RF oscillator the reference node to enable communication between the frequency.
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公开(公告)号：US10581409B2
公开(公告)日：2020-03-03
申请号：US15855943
申请日：2017-12-27
申请人： pSemi Corporation
发明人： David Kovac
摘要： Devices and methods for auto-tuning a tunable circuit based on a frequency of operation of the tunable circuit using a clocked frequency detector circuit are described. The clocked frequency detector uses a readily available clock signal to drive a counter circuit to provide an indication of the frequency of operation of the tunable circuit. The tunable circuit, including the clocked frequency detector, can be integrated within a same chip that is autonomously configurable based on the frequency of operation and the readily available clock.
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公开(公告)号：US10546166B2
公开(公告)日：2020-01-28
申请号：US16266376
申请日：2019-02-04
申请人： RFMicron, Inc.
摘要： A method includes sending, by a reader, a radio frequency (RF) signal to a wireless sensor that includes an antenna having a tail section and a head section. The tail section is for placement in an RF limited area for sensing moisture in a first location of a vehicle under test and wherein the head section is for placement in a non-RF limited area. The method further includes receiving, by the reader, an RF response to the RF signal from the wireless sensor. The first RF response includes an indication of adjustment of one or more RF characteristics of the wireless sensor, which corresponds to a variance of the one or more RF characteristics from a desired value, which, in turn, corresponds to a level of moisture at the first location. The method further includes outputting, by the reader, a message regarding the level of moisture at the first location.
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公开(公告)号：US10536317B2
公开(公告)日：2020-01-14
申请号：US16359355
申请日：2019-03-20
发明人： Young-yun Kang , Min-ho Shin , Hyun-ju Go
摘要： Automatic frequency controllers, automatic frequency control methods, wireless communication devices, and/or wireless communication methods are provided. The automatic frequency controllers for correcting a frequency offset between a base station and a terminal includes at least one processor communicatively coupled to a memory and configured to execute computer-readable instructions stored in the memory to obtain a phase estimate from a reference signal received from the base station; classify a downlink channel as a High Speed Train (HST) channel or a non-HST channel based on the phase estimate; adjust a loop gain according to the classified downlink channel; calculate a phase error based on the phase estimate and the loop gain; correct the frequency offset using the phase error; and communicate with the base station after correcting the frequency offset.
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49.发明申请公开(公告)号：US20200014382A1
公开(公告)日：2020-01-09
申请号：US16524710
申请日：2019-07-29
申请人： pSemi Corporation
发明人： Tero Tapio Ranta
IPC分类号： H03K17/16 , H03M1/10 , H01F21/12 , H03H7/01 , H03K17/10 , H03K17/687 , H01G7/00 , H03H7/38 , H03H11/28 , H01L23/522 , H01L27/06 , H01L27/12 , H01L49/02 , H03J3/20 , H01G4/002
摘要： A method and apparatus for use in a digitally tuning a capacitor in an integrated circuit device is described. A Digitally Tuned Capacitor DTC is described which facilitates digitally controlling capacitance applied between a first and second terminal. In some embodiments, the first terminal comprises an RF+ terminal and the second terminal comprises an RF− terminal. In accordance with some embodiments, the DTCs comprise a plurality of sub-circuits ordered in significance from least significant bit (LSB) to most significant bit (MSB) sub-circuits, wherein the plurality of significant bit sub-circuits are coupled together in parallel, and wherein each sub-circuit has a first node coupled to the first RF terminal, and a second node coupled to the second RF terminal. The DTCs further include an input means for receiving a digital control word, wherein the digital control word comprises bits that are similarly ordered in significance from an LSB to an MSB.
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公开(公告)号：US10476485B2
公开(公告)日：2019-11-12
申请号：US15477196
申请日：2017-04-03
发明人： Xin Wang , Lily Zhu , Andrew E. Youtz
摘要： A method, apparatus, and system for lessening impact of connected mode mobility measurement is disclosed. A user equipment (UE) may reduce network management complexity by autonomously collecting signal quality measurements for neighboring cells. By autonomously tuning at opportune times for the UE, signal quality measurements may be obtained and reported to a serving cell. In another implementation, the UE examines the broadcast system information of both the serving base station against that of the neighboring base stations. Based on the included bandwidth information, the UE selects appropriate narrowband radio frequency subcarriers to perform signal quality measurement.
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