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公开(公告)号：US10419008B2
公开(公告)日：2019-09-17
申请号：US15470375
申请日：2017-03-27
IPC分类号： H03L7/099 , H03B1/00 , H03L1/02 , H03B5/12 , H03B5/08 , H03B5/04 , H03L7/087 , H03L7/113 , H03L7/18
摘要： Methods and systems are provided for calibrating voltage-controlled oscillators (VCOs). frequency control information, relating to output frequency of a VCO, which varies based on changes in operational conditions, may be determined. The frequency control information enables indicating the output frequency within a range of allowable values for control inputs and a range of expected values based on the operational conditions. For each control input setting, calibration control information for a calibration voltage associated with a control input, may be determined, based on the frequency control information, with respect to the operational conditions, to generate a constant output frequency. The operational conditions may be assessed, and a calibration voltage corresponding to the assessed operational conditions may be determined. The calibration voltage may be applied, and based on applying the calibration voltage, a tuning control input for tuning the constant output frequency may be determined and applied to the VCO.
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公开(公告)号：US10284207B2
公开(公告)日：2019-05-07
申请号：US15812221
申请日：2017-11-14
摘要： Methods and systems are provided for adaptively configuring voltage-controlled oscillator (VCO) arrays, such as to reduce mismatches among the VCOs. A plurality of voltage-controlled oscillators (VCOs), connected in parallel to a common control input, and with each VCO outputting an oscillating signal based on the common control input and an adjustment input, may be configured to reduce mismatches among the VCOs. The plurality of VCO may be configured by adjusting at least one operational parameter applicable to interconnection paths connecting outputs of the plurality of VCOs; measuring a mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter; and adjusting a first operational parameter applicable to one or more of the plurality of VCOs to reduce mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter.
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公开(公告)号：US10256948B2
公开(公告)日：2019-04-09
申请号：US15484750
申请日：2017-04-11
发明人： Hanan Leizerovich
摘要： Systems and methods enable a plurality of modems in a microwave network receive a plurality of frames from a previous one of the plurality of modems and detect an error frame within the plurality of frames. The plurality of modems can be further configured to send a retransmission request to the previous modem upon detection of the error frame and transmit a dummy frame in place of the error frame to a next one of the plurality of modems.
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公开(公告)号：US10243601B2
公开(公告)日：2019-03-26
申请号：US15830177
申请日：2017-12-04
发明人： Ronen Shaked , Ilan Reingold , Eitan Tsur , Eran Ridel
摘要： A system and method for frequency reuse for wireless point-to-point backhaul. Frequency reuse is enabled through the cancellation of interfering signals generated by interference sources. In one embodiment, a conventional dish antenna is complemented with one or more additional auxiliary antennas (e.g., isotropic). The one or more additional auxiliary antennas enable cancellation of interfering signals whose direction of arrival (DOA) is off the dish antenna's bore-sight.
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公开(公告)号：US10243267B2
公开(公告)日：2019-03-26
申请号：US15155572
申请日：2016-05-16
发明人： Eran Ridel , Igal Kushnir
摘要： A point-to-point (PtP) communication system includes a near end antenna device configured to transmit a narrow antenna beam over a wireless link, and includes a far end antenna device configured receive the narrow antenna beam over the wireless link. The near end antenna device including a directive element configured to focus an electrical field into the narrow antenna beam, and including a beam steering element (e.g., a phased array feeder (PAF) assembly) configured to generate the electrical field and to track the far end antenna, and further including a communication interface unit (e.g., an outdoor unit) configured to perform operations on a transmitted signal and a received signal.
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公开(公告)号：US10135505B2
公开(公告)日：2018-11-20
申请号：US15671523
申请日：2017-08-08
发明人： Ronen Shaked
IPC分类号： H04B7/0456
摘要： A 5G base station transmitter at least partially precodes data for beam forming, and generates digital precoded baseband signals. Cross product circuitry coupled to the digital precoder, generates digital cross products of the digital precoded baseband signals. Both the baseband signals and the cross products are put through digital-to-analog converters (DACs), then provided to an analog non-linear precoder. The analog non-linear precoder combines the analog baseband signals, the cross products, with pre-distortion and precoder coefficients to generate a signal that is pre-compensated for power amplifier non-linearity. The pre-compensated signal is amplified by the power amplifier and transmitted via a phased antenna array. The number of extra DACs required for inserting pre-distortion when a hybrid digital/analog precoder is used can be limited to approximately N RF ( N RF - 1 ) 2 , where NRF is the number of outputs of the digital precoder. This is significantly fewer than the number of extra DACs used by other methods.
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公开(公告)号：US10122520B2
公开(公告)日：2018-11-06
申请号：US15834201
申请日：2017-12-07
发明人： Kobi Sturkovich
摘要： A microwave backhaul system having quadruple capacity. In one embodiment, an outdoor communication unit in a microwave backhaul system is provided, which includes a first and second dual channel processing modules that are each configured to process two transmission/reception channels. The outdoor communication unit also includes two transmitter modules that are each configured to upconvert two channels for transmission at vertical polarization and a horizontal polarization.
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公开(公告)号：US10097188B2
公开(公告)日：2018-10-09
申请号：US15830105
申请日：2017-12-04
IPC分类号： H03L7/00
摘要： A system and method for system, method and apparatus for phase hits and microphonics cancellation. In addition to a first RF synthesizer source, a device also includes a second stable reference signal source that operates at a lower frequency as compared to the RF synthesizer source. The second stable reference signal source is selected with good phase noise characteristics and can be used to correct phase error events.
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公开(公告)号：US09882659B2
公开(公告)日：2018-01-30
申请号：US15670142
申请日：2017-08-07
发明人： Nadav Fine , Ran Soffer
CPC分类号： H04B14/02 , H04B14/004 , H04B14/023 , H04L1/0042 , H04L1/0045 , H04L1/0065 , H04L1/007 , H04L27/0008 , H04L27/3411 , H04L43/028 , H04L43/16 , H04W24/02
摘要： The continuous demand for capacity and the limited available spectrum in wireless and wired communication has led to reliance on advanced modulation techniques to dramatically increase the number of bits per hertz per second. This demand in capacity and using the higher order constellations shorten the link range, and as a result, system gain becomes an important characteristic. The modulation techniques described here improve the system gain by, e.g., as much as 2.5 dB in high order modulations such as 4096-QAM. The modulation techniques include reducing the peak to average ratio and adding shaping gain. These techniques dramatically improve the system capacity, system gain, power consumption and system cost.
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公开(公告)号：US09768889B2
公开(公告)日：2017-09-19
申请号：US14983792
申请日：2015-12-30
发明人： Nadav Fine , Ran Soffer
CPC分类号： H04B14/02 , H04B14/004 , H04B14/023 , H04L1/0042 , H04L1/0045 , H04L1/0065 , H04L1/007 , H04L27/0008 , H04L27/3411 , H04L43/028 , H04L43/16 , H04W24/02
摘要： The continuous demand for capacity and the limited available spectrum in wireless and wired communication has led to reliance on advanced modulation techniques to dramatically increase the number of bits per hertz per second. This demand in capacity and using the higher order constellations shorten the link range, and as a result, system gain becomes an important characteristic. The modulation techniques described here improve the system gain by, e.g., as much as 2.5 dB in high order modulations such as 4096-QAM. The modulation techniques include reducing the peak to average ratio and adding shaping gain. These techniques dramatically improve the system capacity, system gain, power consumption and system cost.
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