Patents by Inventor Edmund J. Balboni
Edmund J. Balboni has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9362893Abstract: Apparatus and methods for switch-coupled oscillators are disclosed. In certain implementations, an oscillator system includes a primary oscillator, one or more auxiliary oscillators, one or more switching circuits, and an oscillator control circuit. The oscillator control circuit can be used to control the one or more switching circuits to selectively couple the primary oscillator to all or a portion of the one or more auxiliary oscillators. The oscillator control circuit can also disable any auxiliary oscillators that are decoupled from the primary oscillator to reduce power consumption. By selecting a number of auxiliary oscillators to couple to the primary oscillator, the oscillator system can have a configurable phase noise versus power consumption profile.Type: GrantFiled: June 23, 2014Date of Patent: June 7, 2016Assignee: ANALOG DEVICES, INC.Inventors: Benjamin P. Walker, Robert J. Broughton, Edmund J. Balboni
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Publication number: 20150372664Abstract: Apparatus and methods for switch-coupled oscillators are disclosed. In certain implementations, an oscillator system includes a primary oscillator, one or more auxiliary oscillators, one or more switching circuits, and an oscillator control circuit. The oscillator control circuit can be used to control the one or more switching circuits to selectively couple the primary oscillator to all or a portion of the one or more auxiliary oscillators. The oscillator control circuit can also disable any auxiliary oscillators that are decoupled from the primary oscillator to reduce power consumption. By selecting a number of auxiliary oscillators to couple to the primary oscillator, the oscillator system can have a configurable phase noise versus power consumption profile.Type: ApplicationFiled: June 23, 2014Publication date: December 24, 2015Inventors: Benjamin P. Walker, Robert J. Broughton, Edmund J. Balboni
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Patent number: 8238494Abstract: A radio frequency (RF) receiver having an analog gain control section for controlling the gain of a received RF signal, and a digital demodulator section for demodulating the output of the gain control section, includes an analog GO circuit connected to recognize the presence of a data packet within a received RF signal in the analog gain control section, and in response to produce an analog GO signal, a digital GO circuit connected to recognize the presence of a data packet within the received RF signal from the digital demodulator section, and in response to produce a digital GO signal, and control circuitry connected to enable gain control functions within the analog gain control section and digital demodulator functions within the digital demodulator section in response to respective analog and digital GO signals.Type: GrantFiled: November 4, 2008Date of Patent: August 7, 2012Assignee: MediaTek, Inc.Inventors: Phillip M. Sher, Sriram Krishnan, Colm J. Prendergast, Edmund J. Balboni, Daniel E. Fague, Jeffrey R. Feigin, Thomas J. Liptay
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Patent number: 7999599Abstract: Disclosed are apparatus and methods for electronic signal conversion in which a power level of the signal is used to adjust the bias current of a converter.Type: GrantFiled: November 24, 2009Date of Patent: August 16, 2011Assignee: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Patent number: 7944307Abstract: A device for amplifying signals over a wide frequency range features stacked amplifying modules connected between a DC voltage source and an electrical ground. The stacking configuration reuses the DC current produced the voltage source, and thus reduces the amount of operational DC current permitting the use of lower voltage, higher frequency devices to be used. The amplifying modules are fed signals which are different versions of an input signal, and the output signals are AC coupled using capacitors to balance out gain imbalances and asymmetries between the amplifying modules.Type: GrantFiled: March 19, 2009Date of Patent: May 17, 2011Assignee: Analog Devices, Inc.Inventors: Marc Goldfarb, Edmund J. Balboni
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Patent number: 7928794Abstract: A dynamically self-bootstrapping circuit for a switch features a resistor in series with the control node of the switch. A bypass switch connects a control node to ground. When the switch is in an off-state, the bypass switch is enabled.Type: GrantFiled: July 21, 2008Date of Patent: April 19, 2011Assignee: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Publication number: 20100237941Abstract: A device for amplifying signals over a wide frequency range features stacked amplifying modules connected between a DC voltage source and an electrical ground. The stacking configuration reuses the DC current produced the voltage source, and thus reduces the amount of operational DC current permitting the use of lower voltage, higher frequency devices to be used. The amplifying modules are fed signals which are different versions of an input signal, and the output signals are AC coupled using capacitors to balance out gain imbalances and asymmetries between the amplifying modules.Type: ApplicationFiled: March 19, 2009Publication date: September 23, 2010Inventors: Marc Goldfarb, Edmund J. Balboni
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Publication number: 20100127756Abstract: Disclosed are apparatus and methods for electronic signal conversion in which a power level of the signal is used to adjust the bias current of a converter.Type: ApplicationFiled: November 24, 2009Publication date: May 27, 2010Applicant: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Publication number: 20100013541Abstract: A dynamically self-bootstrapping circuit for a switch features a resistor in series with the control node of the switch. A bypass switch connects a control node to ground. When the switch is in an off-state, the bypass switch is enabled.Type: ApplicationFiled: July 21, 2008Publication date: January 21, 2010Inventor: Edmund J. Balboni
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Publication number: 20090060104Abstract: A radio frequency (RF) receiver having an analog gain control section for controlling the gain of a received RF signal, and a digital demodulator section for demodulating the output of the gain control section, includes an analog GO circuit connected to recognize the presence of a data packet within a received RF signal in the analog gain control section, and in response to produce an analog GO signal, a digital GO circuit connected to recognize the presence of a data packet within the received RF signal from the digital demodulator section, and in response to produce a digital GO signal, and control circuitry connected to enable gain control functions within the analog gain control section and digital demodulator functions within the digital demodulator section in response to respective analog and digital GO signals.Type: ApplicationFiled: November 4, 2008Publication date: March 5, 2009Applicant: MediaTek, Inc.Inventors: Phillip M. Sher, Sriram Krishnan, Colm J. Prendergast, Edmund J. Balboni, Daniel E. Fague, Jeffrey R. Feigin, Thomas J. Liptay
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Patent number: 7457378Abstract: An RF receiver includes an analog GO circuit that recognizes the presence of a data packet within a received RF signal in the receiver's analog gain control section, and in response produces an analog GO signal, and a digital GO circuit that recognizes the presence of a data packet from the receiver's digital demodulator section, and in response produces a digital GO signal. Gain control functions within the analog gain control section, and digital demodulator functions within the digital demodulator section, are enabled in response to respective analog and digital GO signals. The system is capable of distinguishing a valid data packet from noise, co-channel interference and adjacent panel interference. A symbol timing recovery circuit within the receiver identifies periodic samples of a data packet preamble that most closely match the preamble bits, with the receiver employing a continuation of the identified periodic samples to decode the remainder of the data packet.Type: GrantFiled: March 2, 2004Date of Patent: November 25, 2008Assignee: MediaTek, Inc.Inventors: Phillip M. Sher, Sriram Krishnan, Colm J. Prendergast, Edmund J. Balboni, Daniel E. Fague, Jeffrey R. Feigin, Thomas J. Liptay
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Patent number: 7352249Abstract: A phase-locked loop frequency synthesizer has a charge pump, phase-locked loop filter, voltage-controlled oscillator, and a bandwidth calibration circuit. The bandwidth calibration circuit measures the gain of the voltage-controlled oscillator and uses the measured voltage-controlled oscillator gain to adjust the charge pump level. The charge pump level is adjusted so that a product of the voltage-controlled oscillator gain and the measured charge pump level results in a constant phase-locked loop bandwidth.Type: GrantFiled: October 3, 2003Date of Patent: April 1, 2008Assignee: Analog Devices, Inc.Inventors: Edmund J. Balboni, Wyn T. Palmer, Jonathan R. Strange
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Patent number: 7200188Abstract: Frequency offsets between a received carrier signal and a receiver's LO frequency are compensated by determining the offset and adjusting the phase of a demodulated signal derived from the modulated carrier. For frequency offsets that produce DC voltage offsets in I and Q components of the demodulated signal, the phase correction is implemented by operating upon the I and Q components with phase rotation operators in the form of sin ? and cos ?, where ? is an angle whose tangent is the result of dividing the Q by the I frequency offsets.Type: GrantFiled: January 27, 2003Date of Patent: April 3, 2007Assignee: Analog Devices, Inc.Inventors: Daniel E. Fague, Thomas J. Liptay, Colm J. Prendergast, Edmund J. Balboni
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Patent number: 7170332Abstract: Reference signal generators are provided that automatically adjusts a reference signal's amplitude when that signal is delivered into system loads having unknown capacitances. The amplitude is preferably initiated at a maximum amplitude to insure operation of system elements that require the reference signal. It is subsequently adjusted downward to a controlled reference amplitude which is predetermined to be an amplitude sufficient to sustain proper operation of the system elements but sufficiently reduced to minimize the spurious signals typically generated by fast high-level current transitions. In addition, the reduction to the controlled amplitude reduces the system current drain. The level control is realized in a buffer amplifier so that the amplitude level of an oscillator signal can be set independently to maximize its signal-to-noise performance. Accordingly, requirements for the reference amplitude do not compromise requirements for the amplitude level of the oscillator signal.Type: GrantFiled: April 15, 2004Date of Patent: January 30, 2007Assignee: Analog Devices, Inc.Inventors: Marc E. Goldfarb, Edmund J. Balboni
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Patent number: 6967513Abstract: A wideband impedance attenuator includes a phase-locked loop filter, a voltage-controlled oscillator connected to the phase-locked loop filter during transmit, and an impedance circuit connected to the phase-locked loop filter and the voltage controlled oscillator. The impedance circuit is a scaled version of the phase-locked loop filter. Moreover, the wideband impedance attenuator attenuates a Gaussian frequency shift key modulation signal by a factor of 1/(N+1) using the impedance circuit, which has an impedance of N*Z(s), and the phase-locked loop filter, which has an impedance of Z(s). An output frequency is generated using a voltage-controlled oscillator wherein the output frequency corresponds to the attenuated Gaussian frequency shift key modulation signal. In addition, a comparator compares a voltage of an output from the programmable gain amplifier with a voltage necessary to produce a predetermined frequency shift in a voltage-controlled oscillator to produce a gain signal.Type: GrantFiled: February 2, 2004Date of Patent: November 22, 2005Assignee: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Patent number: 6882834Abstract: A direct conversion receiver apparatus includes a local oscillator to produce a first local oscillation signal and a second oscillation signal. A first modulation circuit modulates the first local oscillation signal, and a second modulation circuit modulates the second local oscillation signal. A RF mixer mixes a received radio frequency signal with the modulated first local oscillation signal, and another RF mixer mixes the received radio frequency signal with the modulated second local oscillation signal. Demodulating circuits translate desired signals of the mixed signal from the RF mixers into band and translate undesired signals of the mixed signal out of band. Filters remove the undesired signals from the demodulated signals.Type: GrantFiled: April 26, 2002Date of Patent: April 19, 2005Assignee: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Patent number: 6844763Abstract: A wideband impedance attenuator includes a phase-locked loop filter, a voltage-controlled oscillator connected to the phase-locked loop filter during transmit, and an impedance circuit connected to the phase-locked loop filter and the voltage controlled oscillator. The impedance circuit is a scaled version of the phase-locked loop filter. Moreover, the wideband impedance attenuator attenuates a Gaussian frequency shift key modulation signal by a factor of 1/(N+1) using the impedance circuit, which has an impedance of N*Z(s), and the phase-locked loop filter, which has an impedance of Z(s). An output frequency is generated using a voltage-controlled oscillator wherein the output frequency corresponds to the attenuated Gaussian frequency shift key modulation signal. In addition, a comparator compares a voltage of an output from the programmable gain amplifier with a voltage necessary to produce a predetermined frequency shift in a voltage-controlled oscillator to produce a gain signal.Type: GrantFiled: August 29, 2002Date of Patent: January 18, 2005Assignee: Analog Devices, Inc.Inventor: Edmund J. Balboni
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Publication number: 20040146122Abstract: Frequency offsets between a received carrier signal and a receiver's LO frequency are compensated by determining the offset and adjusting the phase of a demodulated signal derived from the modulated carrier. For frequency offsets that produce DC voltage offsets in I and Q components of the demodulated signal, the phase correction is implemented by operating upon the I and Q components with phase rotation operators in the form of sin &thgr; and cos &thgr;, where &thgr; is an angle whose tangent is the result of dividing the Q by the I frequency offsets.Type: ApplicationFiled: January 27, 2003Publication date: July 29, 2004Inventors: Daniel E. Fague, Thomas J. Liptay, Colm J. Prendergast, Edmund J. Balboni
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Patent number: 5157542Abstract: An optical FM modulation system includes a continuous wave optical light source for producing an optical carrier wave; integration means, responsive to an FM modulating signal, for generating a phase signal representative of the phase variations corresponding to the frequency variations of the FM modulating signal; and an electro-optic phase modulator, responsive to the electrical signal representative of the phase variations, for shifting the phase of the optical carrier wave to modulate the frequency of the optical carrier wave as a function of the modulating signal.Type: GrantFiled: January 15, 1991Date of Patent: October 20, 1992Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Daniel J. Fitzmartin, Edmund J. Balboni