| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 用于受限电源的功率供应设备以及使用功率供应设备的音频放大器 | CN200780010062.9 | 2007-01-23 | CN101405924B | 2012-07-11 | J·B·弗伦奇; A·J·梅森 |
| 一种用于受限电源的功率供应设备和使用该功率供应设备的音频放大器，它包括用于提供输出功率信号的电源，该输出功率信号可以由峰均功率需求比高的负载使用。当使用这种电源给峰均功耗比高的装置供电时，如果要将峰值功率保持在受限电源的功率供应极限以下，那么该装置的平均功率输出会受到严重限制。 | ||||||
| 2 | 用于受限电源的功率供应设备以及使用功率供应设备的音频放大器 | CN200780010062.9 | 2007-01-23 | CN101405924A | 2009-04-08 | J·B·弗伦奇; A·J·梅森 |
| 一种用于受限电源的功率供应设备和使用该功率供应设备的音频放大器，它包括用于提供输出功率信号的电源，该输出功率信号可以由峰均功率需求比高的负载使用。当使用这种电源给峰均功耗比高的装置供电时，如果要将峰值功率保持在受限电源的功率供应极限以下，那么该装置的平均功率输出会受到严重限制。 | ||||||
| 3 | USING A NEW SYNCHRONIZATION SCHEME FOR A MULTI-CHANNEL CLASS-D AMPLIFIER | CA2798943 | 2012-12-14 | CA2798943C | 2016-02-02 | ANAZAWA ISAO GINN |
| Various embodiments are described herein for a multi-channel class-D amplifier and an associated processing method. In general, the multi-channel class-D amplifier comprises a signal source that provides a plurality of input signals and generates synchronization information; and a plurality of class-D amplifier channel modules, each class-D amplifier channel module being configured to process a corresponding input signal from the plurality of input signals according to the synchronization information to produce an output signal. The switching frequencies employed by the plurality of class-D amplifier channel modules are substantially similar to one another and the processing of the plurality of input signals is offset in time across the plurality of class-D amplifier channel modules. | ||||||
| 4 | USING A NEW SYNCHRONIZATION SCHEME FOR A MULTI-CHANNEL CLASS-D AMPLIFIER | CA2798943 | 2012-12-14 | CA2798943A1 | 2013-06-20 | ANAZAWA ISAO GINN |
| Various embodiments are described herein for a multi-channel class-D amplifier and an associated processing method. In general, the multi-channel class-D amplifier comprises a signal source that provides a plurality of input signals and generates synchronization information; and a plurality of class-D amplifier channel modules, each class-D amplifier channel module being configured to process a corresponding input signal from the plurality of input signals according to the synchronization information to produce an output signal. The switching frequencies employed by the plurality of class-D amplifier channel modules are substantially similar to one another and the processing of the plurality of input signals is offset in time across the plurality of class-D amplifier channel modules. | ||||||
| 5 | DETECTION AND ELIMINATION OF OSCILLATION WITHIN CELLULAR NETWORK AMPLIFIERS | CA2566784 | 2006-10-31 | CA2566784C | 2009-06-30 | BUREN V ALAN VAN; COOK PATRICK L; SKRYPNYK VOLODYMYR |
| A system and method for substantially reducing oscillation produced by a network amplifier. An exemplary method includes receiving a cellular signal at a first antenna of a network amplifier and applying a first amplification factor to the cellular signal. The resultant amplified cellular signal is transmitted to a target destination via a second antenna. A first signal level of the cellular signal is measured while the first amplification factor is being applied to the cellular signal. Then, a second amplification factor that is less than the first amplification factor is applied to the cellular signal, during which a second signal level of the cellular signal is measured. If the second signal level is significantly less than the first signal level, the first amplification factor is reduced by a predetermined amount. | ||||||
| 6 | DETECTION AND ELIMINATION OF OSCILLATION WITHIN CELLULAR NETWORK AMPLIFIERS | CA2566784 | 2006-10-31 | CA2566784A1 | 2008-01-13 | SKRYPNYK VOLODYMYR; COOK PATRICK L; BUREN V ALAN VAN |
| A system and method for substantially reducing oscillation produced by a network amplifier. An exemplary method includes receiving a cellular signal at a first antenna of a network amplifier and applying a first amplification factor to the cellular signal. The resultant amplified cellular signal is transmitted to a target destination via a second antenna. A first signal level of the cellular signal is measured whil e the first amplification factor is being applied to the cellular signal. Then, a second amplification factor that is less than the first amplification factor is applied to the cellular signal, during which a second signal level of the cellular signal is measured. If th e second signal level is significantly less than the first signal level, the first amplification factor is reduced by a predetermined amount. | ||||||
| 7 | POWER SUPPLY FOR LIMITED POWER SOURCES AND AUDIO AMPLIFIER USING POWER SUPPLY | CA2635629 | 2007-01-23 | CA2635629A1 | 2007-07-26 | FRENCH JOHN B; MASON ANDREW JOHN |
| A power supply for limited power sources and an audio amplifier using the power supply comprising power sources to provide an output power signal that can be used by load with a high peak to average power requirement ratio. When such power sources are used to power devices that have a high peak to average power consumption, the average power output of the device is severely limited if the peak power is kept below the power supply limits of the limited power source. | ||||||
| 8 | Envelope power supply calibration of a multi-mode radio frequency power amplifier | US14010617 | 2013-08-27 | US09020452B2 | 2015-04-28 | Brian Baxter; Jason Millard; Roman Zbigniew Arkiszewski; Steven Selby |
| The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom. | ||||||
| 9 | ENVELOPE POWER SUPPLY CALIBRATION OF A MULTI-MODE RADIO FREQUENCY POWER AMPLIFIER | US14010643 | 2013-08-27 | US20130342270A1 | 2013-12-26 | Brian Baxter; Jason Millard; Roman Zbigniew Arkiszewski; Steven Selby |
| The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom. | ||||||
| 10 | POWER AMPLIFIER WITH IMPROVED POWER EFFICIENCY | US13612267 | 2012-09-12 | US20130113555A1 | 2013-05-09 | Jin Cheol JEONG; In Bok YOM |
| Provided is a power amplifier used in a transmitter of a communication system. The power amplifier may include a power amplifier module to amplify power of a transmitting signal, an energy converter module to receive thermal energy generated by the power amplifier module and to convert the received thermal energy into electric energy, and a direct current (DC)-DC converter module to produce DC power using the electric energy generated by the energy converter module and to supply the produced DC power to the power amplifier module. | ||||||
| 11 | AUDIO SIGNAL PROCESSING SYSTEM FOR LIVE MUSIC PERFORMANCE | US12055903 | 2008-03-26 | US20080240454A1 | 2008-10-02 | William Henderson |
| A method for generating and/or performing music in real time includes receiving one or more audio signals, receiving one or more virtual instrument trigger signals, and selecting one or more plug-ins and/or one or more virtual instruments. A processing scheme is selected from a set of operations. The received audio signals and instrument trigger signals are processed in real time as a function of the selected plug-ins, virtual instruments and processing scheme, and outputted in real time as music signals. The set of operations from which the processing scheme can be selected includes: (1) manipulating the received audio signals as a function of the selected sound effects plug-ins to produce manipulated audio signals, and/or (2) generating virtual instrument sound signals as a function of the received trigger signals and the selected virtual instruments, and/or (3) manipulating the virtual instrument sound signals as a function of the selected sound effect plug-ins to produce manipulated virtual instrument signals, and/or (4) combining the received audio signals and/or the manipulated audio signals and/or the virtual instrument sound signals and/or the manipulated virtual instrument signals to produce combined signals, and/or (5) manipulating any or all of the combined signals to produce manipulated combined signals, and/or (6) repeating operations (4) and/or (5) with any or all of the combined signals and/or with any or all of the manipulated combined signals to produce iteratively processed signals. | ||||||
| 12 | POWER SUPPLY FOR LIMITED POWER SOURCES AND AUDIO AMPLIFIER USING POWER SUPPLY | PCT/CA2007/000086 | 2007-01-23 | WO2007082388A1 | 2007-07-26 | FRENCH, John, B.; MASON, Andrew, John |
A power supply for limited power sources and an audio amplifier using the power supply comprising power sources to provide an output power signal that can be used by load with a high peak to average power requirement ratio. When such power sources are used to power devices that have a high peak to average power consumption, the average power output of the device is severely limited if the peak power is kept below the power supply limits of the limited power source. |
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| 13 | Digital input circuit and method for high voltage sensors | US15018804 | 2016-02-08 | US09608635B1 | 2017-03-28 | Anthony S. Partow; Pirooz Parvarandeh |
| A digital input circuit includes a series connection of a current limiter and a switch having a switch control input coupled between a signal input and ground, and a logic level shifter coupled to the signal input and having a switch control output coupled to the switch control input and a signal output, where a maximum amplitude at the signal input is greater than a maximum amplitude at the signal output. A digital input method includes coupling an input signal to ground with a current limiter by closing an electronic switch, providing an output signal responsive to the input signal, where a maximum amplitude of the input signal is greater than a maximum amplitude of the output signal, by latching the output signal while the input signal is above a threshold voltage and opening the electronic switch after the output signal is latched. | ||||||
| 14 | Envelope power supply calibration of a multi-mode radio frequency power amplifier | US14010630 | 2013-08-27 | US09031522B2 | 2015-05-12 | Brian Baxter; Jason Millard; Roman Zbigniew Arkiszewski; Steven Selby |
| The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom. | ||||||
| 15 | POWER MODULE AND MANUFACTURING PROCESS | US13631455 | 2012-09-28 | US20130076360A1 | 2013-03-28 | Adam Albrecht |
| A power module for a high frequency amplifier unit is provided. The power module includes a base support plate, on which at least one power electronic module is contacted via a number of contact pins. A shield plate is arranged on a side of the power electronic module facing away from the base support plate. The power electronic module is in contact with a cooling element at a side facing the shield plate. | ||||||
| 16 | BOOST CHARGE-PUMP WITH FRACTIONAL RATIO AND OFFSET LOOP FOR SUPPLY MODULATION | US13218400 | 2011-08-25 | US20120212293A1 | 2012-08-23 | Nadim Khlat |
| Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system for managing the power delivered to a linear RF power amplifier. The pseudo-envelope follower power management system may include a switch mode power supply converter and a parallel amplifier cooperatively coupled to provide a linear RF power amplifier supply to the linear RF power amplifier. The pseudo-envelope follower power management system may include a charge pump configured to power the parallel amplifier. The charge pump may generate a plurality of output voltage levels. The charge pump may be either a boost charge pump or a boost/buck charge pump. The pseudo-envelope follower power management system may include an offset voltage control circuit configured to provide feedback to the switch mode power supply converter to regulate an offset voltage developed across a coupling device that couples the output of the parallel amplifier to the linear RF power amplifier supply. | ||||||
| 17 | SUPPLY VOLTAGE CONTROL DEVICE FOR AMPLIFIER | US12859406 | 2010-08-19 | US20110050337A1 | 2011-03-03 | Keiju Ito; Susumu Miura |
| A supply voltage control device for an amplifier that controls a supply voltage for the amplifier has been improved. The supply voltage control device includes: a supply voltage control circuit including an error amplification circuit that feeds an error current so as to control the supply voltage for the amplifier, and a direct current feed circuit that feeds a direct current (or the direct current and a current of a low-frequency component); a high-frequency component extraction unit that extracts a predetermined high-frequency component contained in a signal resulting from detection of an envelope relevant to a signal to be amplified by the amplifier; a peak hold unit that performs peak hold processing on a signal of the extracted high-frequency component; and an addition unit that adds up a signal based on the result of detection of the envelope relevant to the signal to be amplified by the amplifier, and the signal resulting from the peak hold processing, and inputs a signal resulting from the addition to the supply voltage control circuit. | ||||||
| 18 | ELECTRONIC CIRCUIT FOR MEASURING A PHYSICAL PARAMETER SUPPLYING AN ANALOGUE MEASUREMENT SIGNAL DEPENDENT UPON THE SUPPLY VOLTAGE | US12207689 | 2008-09-10 | US20090066392A1 | 2009-03-12 | Sylvain Grosjean; Michel Willemin; Beat Pfefferli |
| The electronic circuit (1) for measuring at least one physical parameter supplies an analogue output measurement signal (SA) dependent upon the value of a supply voltage. The circuit includes a sensor interface (2) connected to a sensor (C) for supplying an analogue measurement signal (Vm) which is then filtered. The circuit further includes an analogue-digital converter (8) for digitally converting the filtered signal (Sm), a digital signal control and processing unit (9) for receiving a converted signal from the converter, and supplying a digital measurement signal (SD). The sensor interface, the analogue-digital converter and the processing unit (9) are powered by a regulated voltage supplied by a voltage regulator (4). The analogue and digital measurement signals are thus independent of any variation in the supply voltage (VCC) of the electronic unit. A ratiometric unit, which may be an analogue multiplier (5) or a digital-analogue converter, is powered for example by the supply voltage source (Bat) in order to recreate the ratiometry on an analogue output measurement signal (SA) on the basis of the analogue (Sm) or digital (SD) measurement signal. | ||||||
| 19 | Envelope power supply calibration of a multi-mode radio frequency power amplifier | US14010643 | 2013-08-27 | US09197182B2 | 2015-11-24 | Brian Baxter; Jason Millard; Roman Zbigniew Arkiszewski; Steven Selby |
| The present disclosure relates to envelope power supply calibration of a multi-mode RF power amplifier (PA) to ensure adequate headroom when operating using one of multiple communications modes. The communications modes may include multiple modulation modes, a half-duplex mode, a full-duplex mode, or any combination thereof. As such, each communications mode may have specific peak-to-average power and linearity requirements for the multi-mode RF PA. As a result, each communications mode may have corresponding envelope power supply headroom requirements. The calibration may include determining a saturation operating constraint based on calibration data obtained during saturated operation of the multi-mode RF PA. During operation of the multi-mode RF PA, the envelope power supply may be restricted to provide a minimum allowable magnitude based on an RF signal level of the multi-mode RF PA, the communications mode, and the saturation operating constraint to provide adequate headroom. | ||||||
| 20 | AUDIO CALIBRATION SYSTEM AND METHOD | US14235205 | 2012-07-26 | US20140294201A1 | 2014-10-02 | Ronald Douglas Johnson; Mark Alan Schultz |
| Described herein is an audio calibration system and method that determines optimum placement and/or operating conditions of speakers for an entertainment system. The system receives an audio signal and transmits the audio signal to a speaker. A recordation of an emanated audio signal from each speaker is made. The system performs a sliding window fast Fourier transform (FFT) comparison of the recorded audio signal temporally and volumetrically with the audio signal. A time delay for each speaker is shifted so that each of the plurality of speakers is synchronized. The individual volumes are then compared for each speaker and are adjusted to collectively match. The method can align and move the convergence point of multiple audio sources. Time differences are measured with respect to a microphone as a function of position. The method uses any audio data and functions with background noise in real time. | ||||||
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