Patents by Inventor Roberto Aparicio Joo
Roberto Aparicio Joo 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).
-
Patent number: 10312961Abstract: An apparatus comprises an input port, an output port, and a resonant receive switch circuit. The resonant receive switch circuit may be coupled between the input port and the output port. The resonant receive switch circuit may comprise a switch and an input matching circuit. When the switch is in a non-conducting state, a signal at the input port is passed to the output port. When the switch is in a conducting state, the signal at the input port is prevented from reaching the output port.Type: GrantFiled: December 14, 2017Date of Patent: June 4, 2019Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.Inventors: Victor Korol, Roberto Aparicio Joo, Naveen Krishna Yanduru
-
Publication number: 20190158066Abstract: An apparatus comprises a first RF port, a second RF port, a first resonator circuit and at least one second resonator circuit. The first resonator circuit and the second resonator circuit may be connected between the first RF port and the second RF port. The first resonator circuit may comprise a first inductor, a first capacitor, and a first stacked switch device. The second resonator circuit may comprise a second inductor, a second capacitor, and a second stacked switch device. The first capacitor and the first stacked switch device may be coupled in series across the first inductor. The second capacitor, the second inductor, and the second stacked switch device may be connected in parallel.Type: ApplicationFiled: November 20, 2018Publication date: May 23, 2019Inventors: Hojung Ju, Roberto Aparicio Joo
-
Publication number: 20190089319Abstract: An apparatus includes an amplifier and a gain control circuit. The amplifier may be configured to provide multiple gain steps. The gain control circuit may be configured to provide fast and precise changes between the multiple gain steps of the amplifier. The gain control circuit may be further configured to change an impedance of the amplifier to switch between the gain steps. The gain control circuit may be further configured to compensate for changes in frequency response related to changing the impedance. The gain control circuit may be further configured to inject a complementary charge to an input of the amplifier to correct a bias voltage deviation and a transient caused by the gain control circuit.Type: ApplicationFiled: August 20, 2018Publication date: March 21, 2019Inventors: Victor Korol, Roberto Aparicio Joo
-
Publication number: 20190068121Abstract: An apparatus comprises an amplifier having a predefined linear range and a shunt load. The shunt load may be connected to an output, an input, or between gain stages of the amplifier. An impedance of the shunt load dynamically varies in response to a level of a signal presented at a node formed by interconnection of the shunt load and the amplifier, extending linearity of the amplifier beyond the predefined range.Type: ApplicationFiled: February 2, 2018Publication date: February 28, 2019Inventors: Victor Korol, Roberto Aparicio Joo, Mohsin Asif, Shawn Bawell
-
Patent number: 8577312Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.Type: GrantFiled: September 13, 2011Date of Patent: November 5, 2013Assignee: Axiom Microdevices, Inc.Inventors: Rahul Magoon, Scott D. Kee, Seyed-Ali Hajimiri, Ichiro Aoki, Roberto Aparicio Joo, Morten Damgaard, Setu Mohta, Geoff Hatcher
-
Publication number: 20120001693Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.Type: ApplicationFiled: September 13, 2011Publication date: January 5, 2012Inventors: Rahul Magoon, Scott D. Kee, Seyed-Ali Hajimiri, Ichiro Aoki, Roberto Aparicio Joo, Morten Damgaard, Setu Mohta, Geoff Hatcher
-
Patent number: 8019292Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.Type: GrantFiled: July 11, 2007Date of Patent: September 13, 2011Assignee: Axiom Microdevices, Inc.Inventors: Rahul Magoon, Scott Kee, Seyed-Ali Hajimiri, Ichiro Aoki, Roberto Aparicio Joo, Morten Damgaard, Setu Mohta, Geoff Hatcher
-
Patent number: 7894546Abstract: A power amplifier includes a power amplifier core in which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, and an additional amplification device configured to generate an output that is proportional to an output of the power amplifier core, such that the output of the additional amplification device indirectly controls the output of the power amplifier core.Type: GrantFiled: June 29, 2007Date of Patent: February 22, 2011Assignee: Axiom Microdevices, Inc.Inventors: Rahul Magoon, Roberto Aparicio Joo, Scott D. Kee, Ichiro Aoki
-
Patent number: 7649411Abstract: A system for amplifying a signal is provided. The system includes a plurality of driver stages, each having an input, an output, and a disable control. An output stage having an input is coupled to the outputs of the plurality of driver stages. A plurality of disable control signals is provided to the driver stages so as to controllably enable and disable one or more of the driver stages.Type: GrantFiled: July 11, 2007Date of Patent: January 19, 2010Assignee: Axiom Microdevices, Inc.Inventors: Ichiro Aoki, Scott Kee, Seyed-Ali Hajimiri, Roberto Aparicio Joo, Rahul Magoon, Donald McClymont
-
Patent number: 7570928Abstract: A system for controlling the power output of a power amplifier includes a power amplifier through which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, a feedback signal comprising a portion of the output of the power amplifier, a first control loop configured to receive the feedback signal and configured to apply an amplitude modulated (AM) signal to the power amplifier and configured to control the gain of the power amplifier, a second control loop configured to receive the feedback signal and configured to correct for offsets in the forward path and to linearize the first control loop; and a third control loop configured to receive the feedback signal and configured to control the phase of the PM component of the transmit signal.Type: GrantFiled: June 29, 2007Date of Patent: August 4, 2009Assignee: Axiom Microdevices, Inc.Inventors: Rahul Magoon, Morten Damgaard, Roberto Aparicio Joo, Scott D. Kee, Ichiro Aoki
-
Publication number: 20090015324Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated current envelope signal. A controller receives power level data and generates attenuation control data for the voltage envelope signal and the current envelope signal. A detector receives the voltage envelope signal and the current envelope signal and generates a control signal based on the greater of the voltage envelope signal and the current envelope signal. A power amplifier level controller receives the control signal and generates a power amplifier level control signal.Type: ApplicationFiled: July 11, 2007Publication date: January 15, 2009Inventors: Rahul Magoon, Scott D. Kee, Seyed-Ali Hajimiri, Ichiro Aoki, Roberto Aparicio Joo, Morten Damgaard, Setu Mohta, Geoff Hatcher
-
Publication number: 20090015336Abstract: A system for amplifying a signal is provided. The system includes a plurality of driver stages, each having an input, an output, and a disable control. An output stage having an input is coupled to the outputs of the plurality of driver stages. A plurality of disable control signals is provided to the driver stages so as to controllably enable and disable one or more of the driver stages.Type: ApplicationFiled: July 11, 2007Publication date: January 15, 2009Inventors: Ichiro Aoki, Scott D. Kee, Seyed-Ali Hajimiri, Roberto Aparicio Joo, Rahul Magoon, Donald McClymont
-
Publication number: 20080061875Abstract: An architecture for detecting amplifier power is provided. The architecture includes a voltage envelope detector that receives a voltage signal and generates a voltage envelope signal. A current envelope detector receives a current signal and generates a current envelope signal. A power amplifier level controller receives the greater of the voltage envelope signal and the current envelope signal, such as by connecting the output of the voltage envelope detector and the current envelope detector at a common point and conducting the high frequency current components to ground via a capacitor. A power amplifier level control signal is then generated based on the voltage drop across the capacitor.Type: ApplicationFiled: January 18, 2007Publication date: March 13, 2008Inventors: Rahul Magoon, Scott D. Kee, John E. Lyu, Ichiro Aoki, Roberto Aparicio Joo
-
Publication number: 20080061874Abstract: A system for controlling amplifier power is provided. The system includes a voltage envelope detector that receives a voltage signal and generates a voltage envelope signal. A current envelope detector receives a current signal and generates a current envelope signal. A power amplifier level controller receives the greater of the voltage envelope signal and the current envelope signal, such as by connecting the output of the voltage envelope detector and the current envelope detector at a common point and conducting the high frequency current components to ground via a capacitor. A power amplifier level control signal is then generated based on the voltage drop across the capacitor.Type: ApplicationFiled: January 18, 2007Publication date: March 13, 2008Inventors: Rahul Magoon, Scott D. Kee, Jon E. Lyu, Ichiro Aoki, Roberto Aparicio Joo, Winfried Bakalski, Thomas Bruder
-
Publication number: 20080032634Abstract: A system for controlling the power output of a power amplifier includes a power amplifier through which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, a feedback signal comprising a portion of the output of the power amplifier, a first control loop configured to receive the feedback signal and configured to apply an amplitude modulated (AM) signal to the power amplifier and configured to control the gain of the power amplifier, a second control loop configured to receive the feedback signal and configured to correct for offsets in the forward path and to linearize the first control loop; and a third control loop configured to receive the feedback signal and configured to control the phase of the PM component of the transmit signal.Type: ApplicationFiled: June 29, 2007Publication date: February 7, 2008Inventors: Rahul Magoon, Morten Damgaard, Roberto Aparicio Joo, Scott D. Kee, Ichiro Aoki
-
Publication number: 20080031383Abstract: A power amplifier includes a power amplifier core in which a transmit signal having an amplitude-modulated (AM) component and a phase-modulated (PM) component is passed and amplified, the power amplifier comprising a forward path, and an additional amplification device configured to generate an output that is proportional to an output of the power amplifier core, such that the output of the additional amplification device indirectly controls the output of the power amplifier core.Type: ApplicationFiled: June 29, 2007Publication date: February 7, 2008Inventors: Rahul Magoon, Roberto Aparicio Joo, Scott D. Kee, Ichiro Aoki
-
Patent number: 6940355Abstract: An integrated voltage controlled oscillator is provided. The integrated voltage controlled oscillator includes a first slab inductor having two ends and a second slab inductor having two ends. A first oscillator core is connected to a first end of the first slab inductor and a second end of the second slab inductor, and a second oscillator core is connected to a second end of the first slab inductor and a first end of the second slab inductor. In this manner, the low-loss slab inductors provide the oscillator tank inductance.Type: GrantFiled: October 17, 2003Date of Patent: September 6, 2005Assignee: California Institute of TechnologyInventors: Seyed-Ali Hajimiri, Roberto Aparicio Joo
-
Publication number: 20040124931Abstract: An integrated voltage controlled oscillator is provided. The integrated voltage controlled oscillator includes a first slab inductor having two ends and a second slab inductor having two ends. A first oscillator core is connected to a first end of the first slab inductor and a second end of the second slab inductor, and a second oscillator core is connected to a second end of the first slab inductor and a first end of the second slab inductor. In this manner, the low-loss slab inductors provide the oscillator tank inductance.Type: ApplicationFiled: October 17, 2003Publication date: July 1, 2004Inventors: Seyed-Ali Hajimiri, Roberto Aparicio Joo