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1. 发明专利

CA2206379A1 AUTOMATIC MATCHING AND TUNING NETWORK 未知
公开(公告)号：CA2206379A1
公开(公告)日：1997-12-18
申请号：CA2206379
申请日：1997-05-28
申请人： NAUTEL LIMITED
发明人： LUU KY THOAI
IPC分类号： H03H7/40 , H03H11/30
摘要： The present invention relates to a matching and tuning network for connecting a source of RF power to a complex load. The network is comprised of a primary circuit and a secondary circuit. The primary circuit is comprised of a fixed capacitor connected in series with a primary winding of a coupling transformer connected to said source of RF power. The secondary circuit is comprised of a series connection of a secondary winding of said coupling transformer and a variable capacitor connected to said load. The network is further comprised of an input voltage sensor; and an input current sensor both connect to an impedance detector and a phase detector. The impedance detector controls an encoder for varying the coupling between the primary winding and the secondary winding of the coupling transformer to maintain a constant input impedance. The phase detector controls the same encoder for varying the capacity of the variable capacitor so as to maintain a zero phase shift at the input to the network.

2. 发明申请

WO2009092150A1 PEAK-TO-AVERAGE POWER REDUCTION METHOD 审中-公开
标题翻译：峰值平均功率降低方法
公开(公告)号：WO2009092150A1
公开(公告)日：2009-07-30
申请号：PCT/CA2008/000169
申请日：2008-01-25
申请人： NAUTEL LIMITED , WALKER, Brian , SCHMID, Philipp
发明人： WALKER, Brian , SCHMID, Philipp
IPC分类号： H04L27/26 , H04H20/72 , H04J11/00
CPC分类号： H04L27/2614 , H04B1/0475 , H04B2001/0416 , H04L27/2623
摘要： A method of reducing peak-to-average power in a hybrid signal is provided. The method determines peaks in power by defining a sample point by way of a digital vector and an analog vector. The digital and analog vectors are added together to generate a hybrid vector which is used to compare the sample point to the maximum desired peak threshold. An error vector is used to correct the sample point to a desired power level. Once the sample point has been corrected it can be added back to the analog signal and transmitted.
摘要翻译：提供了一种降低混合信号中的峰均功率的方法。该方法通过数字矢量和模拟矢量定义采样点来确定功率峰值。将数字和模拟向量相加在一起以产生用于将采样点与最大期望峰值阈值进行比较的混合矢量。使用误差向量将采样点校正到所需的功率水平。一旦采样点被校正，可以将其加回到模拟信号并传输。

3. 发明申请

WO2016161517A1 MULTIPLEX OF HIGH DEFINITION RADIO STATIONS 审中-公开
标题翻译：高定义无线电台的多重
公开(公告)号：WO2016161517A1
公开(公告)日：2016-10-13
申请号：PCT/CA2016/050406
申请日：2016-04-08
申请人： NAUTEL LIMITED
发明人： SCHMID, Philipp , WALKER, Brian
IPC分类号： H04H20/95 , H04H20/30 , H04H20/46 , H04H60/27 , H04J11/00
CPC分类号： H04L27/2621 , H04H20/00 , H04H2201/12 , H04H2201/183 , H04L27/2623 , H04L27/2624
摘要： A system for peak-to-average-power ratio (PAPR) reduction of a frequency shifted plurality of digital broadcast signals taking into account the combined signal peaks in order to transmit the signals more efficiently in a single broadcast transmission system. The PAPR algorithm takes into account a rotating constellation phase offset for the shifted signals corresponding to the amount of applied frequency shift. In the case of a dual sideband In-Band-On-Channel (IBOC) signal typically used in conjunction with an FM carrier in the center, the sidebands can be interleaved to create a new IBOC signal definition and take the place of the FM carrier for an all-digital transmission that is backward compatible with IBOC receivers allowing for a gradual migration to all digital broadcasting.
摘要翻译：考虑到组合信号峰值的频移多个数字广播信号的峰值与平均功率比（PAPR）的系统，以便在单个广播传输系统中更有效地发送信号。 PAPR算法考虑了与所施加的频移量相对应的移位信号的旋转星座相位偏移。在通常与中心的FM载波一起使用的双边带带内通道（IBOC）信号的情况下，边带可以被交织以产生新的IBOC信号定义并代替FM载波用于与IBOC接收机向后兼容的全数字传输，允许逐渐迁移到所有数字广播。

4. 发明申请

WO2005078922A1 AUTOMATIC MATCHING AND TUNING UNIT 审中-公开
标题翻译：自动匹配和调谐单元
公开(公告)号：WO2005078922A1
公开(公告)日：2005-08-25
申请号：PCT/CA2005/000182
申请日：2005-02-14
申请人： NAUTEL LIMITED , PINKS, John, R.
发明人： PINKS, John, R.
IPC分类号： H03H7/40
CPC分类号： H03H7/40 , H04B1/0458
摘要： An automatic matching and tuning unit (AMTU), which connects the output from a low or medium frequency, high power radio transmitter, to an antenna with a complex input impedance. The transmitter requires a resistive 50-ohm terminating impedance whereas the input impedance to the antenna comprises a low resistance value in series with a high capacitive reactance. The AMTU resonates the antenna's reactance with a series connected adjustable loading coil. Sensors measure the phase angle between the input current and voltage and maintain a continuous tuned condition using a microprocessor controlled tuning motor. The resulting input resistance is transformed to 50 ohms using a tapped matching transformer in conjunction with pair of resonant, mutually coupled coils with an adjustable mutual coupling coefficient. Sensors measure the input resistance and adjust the mutual coupling coefficient using a microprocessor-controlled motor to maintain the required 50-ohm input impedance.
摘要翻译：一个自动匹配和调谐单元（AMTU），它将低功率或中频高功率无线电发射机的输出连接到具有复杂输入阻抗的天线。发射机需要电阻50欧姆的终端阻抗，而对天线的输入阻抗包括与高电容电抗串联的低电阻值。 AMTU通过串联可调加载线圈共振天线的电抗。传感器测量输入电流和电压之间的相位角，并使用微处理器控制的调谐电机保持连续调谐状态。结果输入电阻变换为50欧姆，使用抽头匹配的变压器与一对具有可调互耦系数的谐振，相互耦合的线圈。传感器测量输入电阻并使用微处理器控制的电机调整相互耦合系数，以保持所需的50欧姆输入阻抗。

5. 发明授权

US11855825B2 IBOC compatible superposition modulation by independent modulators utilizing clipping noise from peak-to-average power reduction 有权
公开(公告)号：US11855825B2
公开(公告)日：2023-12-26
申请号：US17848132
申请日：2022-06-23
申请人： Nautel Limited
发明人： Philipp Schmid
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49 , H04L27/26 , H04L27/18 , H04H40/18 , H04L5/02
CPC分类号： H04L27/2624 , H04H40/18 , H04L5/023 , H04L27/183 , H04H2201/18
摘要： According to an aspect of the present invention, there is provided a method for providing additional bandwidth to receivers that can decode a higher modulation comprising trading a peak-to-average power ratio (PAPR) reduction induced constellation noise of all or a subset of in-band on-channel (IBOC) carriers within an orthogonal frequency division multiplexing (ODFM) waveform with data carrying superposition modulation.

6. 发明申请

US20120170632A1 IMPEDANCE MEASUREMENT IN AN ACTIVE RADIO FREQUENCY TRANSMITTER 有权
标题翻译：有源无线电频率发射机中的阻抗测量
公开(公告)号：US20120170632A1
公开(公告)日：2012-07-05
申请号：US13412661
申请日：2012-03-06
申请人： Brian Walker
发明人： Brian Walker
IPC分类号： H04B17/00
CPC分类号： H04B1/0458 , H04B17/10
摘要： A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
摘要翻译：提供了一种用于确定天线的有源射频发射机中的阻抗测量的发射机和方法。从传送到天线的调制信号获得电压和电流采样。电压和电流样本从模拟转换为数字格式，并进行抽取以减少样本数量。执行每个电压和电流采样到基带电平的复杂解调，并执行电压和电流采样的抽取以减少样本数量。然后可以从电压和电流样本估计阻抗估计。

7. 发明申请

US20090289710A1 AMPLIFIER PROVIDING POWER RECOVERY FROM A NARROW-BAND ANTENNA 有权
标题翻译：放大器提供从窄带天线恢复功率
公开(公告)号：US20090289710A1
公开(公告)日：2009-11-26
申请号：US12470210
申请日：2009-05-21
申请人： Tim Hardy , Dennis Covill
发明人： Tim Hardy , Dennis Covill
IPC分类号： H03F3/217
CPC分类号： H04B1/0458 , G01S1/024 , G01S1/042 , G01S1/24 , H03F1/02 , H03F1/56 , H03F3/211 , H03F3/2173 , H03F3/24 , H03F2200/387 , H03F2200/451 , H03F2200/537 , H03F2200/541 , H04B2001/045
摘要： A method, amplifier and system are provided for enabling power recovery from a narrow-band antenna when a signal having bandwidth exceeding that of the antenna is utilized. The amplifier provides amplification of a source signal to the antenna and recovery of power stored in the antenna during periods when the impedance of the antenna is negative to enable reverse current through the amplifier to a direct current (DC) power source.
摘要翻译：提供了一种方法，放大器和系统，用于当使用带宽超过天线宽度的信号时，能够从窄带天线进行功率恢复。该放大器在天线的阻抗为负的时段内，向天线放大源极信号和恢复存储在天线中的功率，以使反向电流通过放大器到直流（DC）电源。

8. 发明授权

US10469301B2 Multiplex of high definition radio stations 有权
公开(公告)号：US10469301B2
公开(公告)日：2019-11-05
申请号：US15565329
申请日：2016-04-08
申请人： Nautel Limited
发明人： Philipp Schmid , Brian Walker
IPC分类号： H04L27/26 , H04H20/00
摘要： A system for peak-to-average-power ratio (PAPR) reduction of a frequency shifted plurality of digital broadcast signals taking into account the combined signal peaks in order to transmit the signals more efficiently in a single broadcast transmission system. The PAPR algorithm takes into account a rotating constellation phase offset for the shifted signals corresponding to the amount of applied frequency shift. In the case of a dual sideband In-Band-On-Channel (IBOC) signal typically used in conjunction with an FM carrier in the center, the sidebands can be interleaved to create a new IBOC signal definition and take the place of the FM carrier for an all-digital transmission that is backward compatible with IBOC receivers allowing for a gradual migration to all digital broadcasting.

9. 发明授权

US08452245B2 Impedance measurement in an active radio frequency transmitter 有权
标题翻译：有源射频发射机中的阻抗测量
公开(公告)号：US08452245B2
公开(公告)日：2013-05-28
申请号：US13412661
申请日：2012-03-06
申请人： Brian Walker
发明人： Brian Walker
IPC分类号： H03C1/62
CPC分类号： H04B1/0458 , H04B17/10
摘要： A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
摘要翻译：提供了一种用于确定天线的有源射频发射机中的阻抗测量的发射机和方法。从传送到天线的调制信号获得电压和电流采样。电压和电流样本从模拟转换为数字格式，并进行抽取以减少样本数量。执行每个电压和电流采样到基带电平的复杂解调，并执行电压和电流采样的抽取以减少样本数量。然后可以从电压和电流样本估计阻抗估计。

10. 发明授权

US08213885B2 Impedance measurement in an active radio frequency transmitter 有权
标题翻译：有源射频发射机中的阻抗测量
公开(公告)号：US08213885B2
公开(公告)日：2012-07-03
申请号：US12421519
申请日：2009-04-09
申请人： Brian Walker
发明人： Brian Walker
IPC分类号： H03C1/62
CPC分类号： H04B1/0458 , H04B17/10
摘要： A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
摘要翻译：提供了一种用于确定天线的有源射频发射机中的阻抗测量的发射机和方法。从传送到天线的调制信号获得电压和电流采样。电压和电流样本从模拟转换为数字格式，并进行抽取以减少样本数量。执行每个电压和电流采样到基带电平的复杂解调，并执行电压和电流采样的抽取以减少样本数量。然后可以从电压和电流样本估计阻抗估计。

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