| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | CIRCUITS AND METHODS FOR REDUCING INTERFERENCE FROM SWITCHED MODE CIRCUITS | EP01964656.1 | 2001-08-29 | EP1314256B1 | 2007-12-19 | MELANSON, John, Laurence |
| A system (100) including a radio receiver (101/108) and switched mode circuitry (114/115) operating at a selected switching frequency is disclosed. Circuitry (207-209) sets the switching circuitry of the switched mode circuitry (114/115) as a function of a frequency of a signal being received by a radio receiver (101/108). | ||||||
| 22 | Methods and circuits for frequency modulation that reduce the spectral noise of switching regulators | EP05008936.6 | 2005-04-22 | EP1592154A2 | 2005-11-02 | Chen, Yuhui; LaPorte, Doug; Flatness, Randy Guy; Dobkin, Robert C. |
The present invention comprises methods and circuits for spread spectrum frequency modulation that reduce peak spectral noise at the outputs or inputs of switching regulators. More specifically, the present invention modulates the operating frequency of the switching regulator in accordance with a frequency modulation waveform having a shape coordinated to a peak noise amplitude waveform that describes the correlation between the operating frequency of a switching regulator and the peak noise amplitude at the regulator's input or output absent spread spectrum frequency modulation. |
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| 23 | Power supply circuit using DC/DC converter | EP12179964.7 | 2012-08-09 | EP2696488B1 | 2017-10-11 | Kroekenstoel, Dave; Thoen, Steven |
| A power supply circuit comprises an input for receiving a power supply from a battery and a DC/DC converter for supplying a converted voltage to a load. A regulator is used for controlling the DC/DC converter such that the current drawn from the converter is smoothed. A charge storage device at the output of the DC/DC converter enables delivery of a non-constant current to the load. | ||||||
| 24 | CIRCUITS AND METHODS FOR REDUCING INTERFERENCE FROM SWITCHED MODE CIRCUITS | EP01964656.1 | 2001-08-29 | EP1314256A2 | 2003-05-28 | MELANSON, John, Laurence |
| A system (100) including a radio receiver (101/108) and switched mode circuitry (114/115) operating at a selected switching frequency is disclosed. Circuitry (207-209) sets the switching circuitry of the switched mode circuitry (114/115) as a function of a frequency of a signal being received by a radio receiver (101/108). | ||||||
| 25 | PULSED TRANSMITTER AND METHOD FOR DYNAMICALLY COMPENSATING SUCH A PULSED TRANSMITTER, USING TEMPERATURE SENSING | EP96946251.4 | 1996-11-15 | EP0862812B1 | 2001-01-03 | TROXEL, James, R.; SCHWERMAN, Paul, W. |
| A system to alter the voltage supplied to the linear regulator of a pulsed transmitter in accordance with the temperature of the regulator, the minimum voltage required for a transmission and the specific aircraft installation requirements so as to reduce problems of heat dissipation in the regulator. | ||||||
| 26 | Eliminating the effects of voltage transients | EP90302663.1 | 1990-03-13 | EP0387108A1 | 1990-09-12 | Ikonen, Raimo; Lonka, Pekka; Mikkola, Pekka |
The invention relates to a method by means of which transients can be eliminated in an apparatus comprising a current source and several functional blocks of which at least one produces transients in the operating voltage. According to the invention, a switch (4) separates the current source (5) and the transient-producing block (2) from the other blocks (1) during the time that transients are being produced and connects the current source (4) to the other blocks (1) and to an energy-storing buffer (6) during the time that transients are not being produced. |
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| 27 | Power supply circuit using DC/DC converter | US13955257 | 2013-07-31 | US09819276B2 | 2017-11-14 | Dave Kroekenstoel; Steven Thoen |
| A power supply circuit comprises an input for receiving a power supply from a battery and a DC/DC converter for supplying a converted voltage to a load. A regulator is used for controlling the DC/DC converter such that the current drawn from the converter is smoothed. A charge storage device at the output of the DC/DC converter enables delivery of a non-constant current to the load. | ||||||
| 28 | Constant input current filter using high-frequency switching for power supplies and related system and method | US13406309 | 2012-02-27 | US09172304B2 | 2015-10-27 | Everett E. Baker; Bashirul A. Polash; Christopher D. Ballard |
| A system includes a constant input current filter configured to draw a constant input current from a power source and to generate a variable output current. The constant input current filter includes a capacitor, a boost converter, and a buck converter. The boost converter is configured to receive at least a portion of the input current and to charge the capacitor using at least the portion of the input current during first time periods associated with operation of a load. The buck converter is configured to discharge the capacitor and to provide an additional current as part of the output current during second time periods associated with operation of the load. The load could represent an electronic device having a time-varying output power characteristic, such as a wireless radio. | ||||||
| 29 | CONSTANT INPUT CURRENT FILTER USING HIGH-FREQUENCY SWITCHING FOR POWER SUPPLIES AND RELATED SYSTEM AND METHOD | US13406309 | 2012-02-27 | US20130221943A1 | 2013-08-29 | Everett E. Baker; Bashirul A. Polash; Christopher D. Ballard |
| A system includes a constant input current filter configured to draw a constant input current from a power source and to generate a variable output current. The constant input current filter includes a capacitor, a boost converter, and a buck converter. The boost converter is configured to receive at least a portion of the input current and to charge the capacitor using at least the portion of the input current during first time periods associated with operation of a load. The buck converter is configured to discharge the capacitor and to provide an additional current as part of the output current during second time periods associated with operation of the load. The load could represent an electronic device having a time-varying output power characteristic, such as a wireless radio. | ||||||
| 30 | Frequency planning for switching devices for multi-band broadcast radios | US12286314 | 2008-09-30 | US08229379B2 | 2012-07-24 | Ligang Zhang |
| Systems and methods are disclosed that use multiple DC-DC (direct-current-to-direct-current) regulators and configurable DC-DC regulators with respect to multi-band audio receivers in order to allow for the use of different DC-DC regulator switching clock signals for different audio broadcast bands. The systems and methods disclosed thereby help to alleviate interference problems typically caused by switching devices used in the DC-DC conversion process. The embodiments described are also applicable to switching power supplies run from alternating current (AC) power sources and to Class D amplifiers working with broadcast radios. | ||||||
| 31 | Frequency planning for switching devices for multi-band broadcast radios | US12286314 | 2008-09-30 | US20090253391A1 | 2009-10-08 | Ligang Zhang |
| Systems and methods are disclosed that use multiple DC-DC (direct-current-to-direct-current) regulators and configurable DC-DC regulators with respect to multi-band audio receivers in order to allow for the use of different DC-DC regulator switching clock signals for different audio broadcast bands. The systems and methods disclosed thereby help to alleviate interference problems typically caused by switching devices used in the DC-DC conversion process. The embodiments described are also applicable to switching power supplies run from alternating current (AC) power sources and to Class D amplifiers working with broadcast radios. | ||||||
| 32 | Methods and circuits for frequency modulation that reduce the spectral noise of switching regulators | US10835693 | 2004-04-29 | US07362191B2 | 2008-04-22 | Yuhui Chen; Doug LaPorte; Randy Guy Flatness; Robert C. Dobkin |
| The present invention comprises methods and circuits for spread spectrum frequency modulation that reduce peak spectral noise at the outputs or inputs of switching regulators. More specifically, the present invention modulates the operating frequency of the switching regulator in accordance with a frequency modulation waveform having a shape coordinated to a peak noise amplitude waveform that describes the correlation between the operating frequency of a switching regulator and the peak noise amplitude at the regulator's input or output absent spread spectrum frequency modulation. | ||||||
| 33 | Wireless communication base station with current limiting capability | US11234900 | 2005-09-26 | US20070072644A1 | 2007-03-29 | Igor Golioto |
| A wireless communication system base station (20) includes a base station transceiver (26) that has at least one operative component (32) for facilitating wireless communications. A current limiting device (36) includes at least one field effect transistor for selectively controlling current flow to a capacitive stability device (34) associated with at least one of the operative components (32). In the disclosed example, the current limiting device (36) is in series with the capacitive stability device (34) but in parallel with the operative component (32). | ||||||
| 34 | Circuits and methods for controlling switching noise in switched-mode circuits | US11233961 | 2005-09-23 | US07142819B1 | 2006-11-28 | Chang Yong Kang; John Laurence Melanson |
| A method of controlling noise in a pulse width modulation circuit includes varying a sample frequency and a range of information levels, wherein each sample within a data sample stream at the sample frequency represents a level within the range of information levels, to shift in frequency noise generated at the sample frequency during encoding of the data sample stream into pulse width modulated patterns. | ||||||
| 35 | Circuits and methods for reducing interference from switched mode circuits | US10715950 | 2003-11-18 | US07010271B2 | 2006-03-07 | John Laurence Melanson |
| A system 100 including a radio receiver 101/108 and switched mode circuitry 114/115 operating at a selected switching frequency is disclosed. Circuitry 207–209 sets the switching-circuitry of the switched mode circuitry 114/115 as a function of a frequency of a signal being received by a radio receiver 101/108. | ||||||
| 36 | Methods and circuits for frequency modulation that reduce the spectral noise of switching regulators | US10835693 | 2004-04-29 | US20050243894A1 | 2005-11-03 | Yuhui Chen; Doug LaPorte; Randy Flatness; Robert Dobkin |
| The present invention comprises methods and circuits for spread spectrum frequency modulation that reduce peak spectral noise at the outputs or inputs of switching regulators. More specifically, the present invention modulates the operating frequency of the switching regulator in accordance with a frequency modulation waveform having a shape coordinated to a peak noise amplitude waveform that describes the correlation between the operating frequency of a switching regulator and the peak noise amplitude at the regulator's input or output absent spread spectrum frequency modulation. | ||||||
| 37 | Pulse width modulated controller | US10251252 | 2002-09-20 | US20030108098A1 | 2003-06-12 | Earl Russell Geddes |
| A Pulse Width Modulated power amplifier which has a random or pseudo-random comparator switching mechanism for reduced distortion and radiated RF emissions is disclosed. | ||||||
| 38 | Electronic apparatus having radio transmitter | US10062476 | 2002-02-05 | US20030083025A1 | 2003-05-01 | Nobuhide Maruo; Makoto Saotome; Makoto Kotani |
| An electronic apparatus comprising a radio transmitter is disclosed. In a computer system (1) having a radio transmission circuit (3) of a phase modulation type supplied with power from a power supply (4) of a switching type, the switching frequency of the power supply (4) is determined based on the comparison frequency for the sampling operation of a PLL circuit (10) of the radio transmitter, thereby removing the power noises generated from the switching regulator of the radio transmitter of a phase modulation type. | ||||||
| 39 | Adaptive pulse frame rate frequency control for digital amplifier systems | US10068492 | 2002-02-05 | US20030058973A1 | 2003-03-27 | Michael J. Tsecouras |
| A system and method of integrating digital switching amplifiers into systems with low amplitude front-end tuners, among other things, to eliminate shielding and EMI filtering associated with signals, power and ground. An adaptive frequency programmable pulse frame rate digital switching amplifier scheme using either look-up tables or appropriate algorithms, ensures by design, the elimination of critical interference frequency generation. | ||||||
| 40 | Enhanced phase control circuit and method for a multiphase power converter | US15270994 | 2016-09-20 | US10103632B2 | 2018-10-16 | Hung-Shou Nien; Ting-Hung Wang; Cheng-Ching Hsu; Shang-Ying Chung |
| A multiphase power converter has a plurality of phase circuits, each of which provides a phase current when being active. During single-phase operation of the multiphase power converter, an enhanced phase control circuit and method monitor the summation of the phase currents, and when the summation becomes higher than a threshold, switch the multiphase power converter to a higher power zone to increase the number of active phases. A high efficiency and high reliability multiphase power converter is thus accomplished. | ||||||
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