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Razieh Roufoogaran

from Santa Monica, CA
Age ~46
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Also known as:
Razieh R Ochikubo, Rozi Roufoogaran, Razieh N
Related to:
Maryam Rofougaran, 57Craig F Ochikubo, 61
Connected to:
Angelique M Roufs, 55Dale M Roufs, 51Stephan D Roufs, 63Todd A Roufs, 52Thomas M Roufus, 57Dameon J Rougas, 46Rosita Rougas, 53Cynthia L Rouge, 65Alice Rougeau, 54Cathryn Rougeau, 79

Razieh Roufoogaran Phones & Addresses

  • Santa Monica, CA
  • 615 Hampton Dr, Venice, CA 90291
  • Marina del Rey, CA
  • Newport Coast, CA
  • Los Angeles, CA
  • Palos Verdes Estates, CA

Publications

Us Patents

Method And System For A Low Noise Amplifier With Tolerance To Large Inputs

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US Patent:
7554404, Jun 30, 2009
Filed:
May 29, 2007
Appl. No.:
11/754472
Inventors:
Razieh Roufoogaran - Venice CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03F 3/45
US Classification:
330261, 330253
Abstract:
Methods and systems for a low noise amplifier with tolerance to large inputs are disclosed. Aspects of one method may include providing an individual current source for each input transistor to a low noise amplifier (LNA), wherein the individual current sources may be isolated from each other when the LNA is turned off. The individual current sources may also form a common current source for the input transistors when the LNA is turned on. Accordingly, the input transistors to the LNA may float when the LNA is turned off, thereby coupling the input signal voltage to the source and drain terminals. The individual current sources may be isolated from each other by a coupling transistor that is turned off. When the LNA is turned on, the coupling transistor may be turned on to couple the individual current sources to each other to form the common current source for the input transistors.

Programmable Amplitude Compensation Circuit

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US Patent:
7586342, Sep 8, 2009
Filed:
Feb 26, 2008
Appl. No.:
12/072437
Inventors:
Qiang Li - Irvine CA, US
Razieh Roufoogaran - Venice CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03B 1/00
US Classification:
327108, 327 63, 327 69, 327 77, 327 90
Abstract:
According to one exemplary embodiment, an amplitude compensation circuit includes a first composite programmable buffer for receiving a first input signal with a first input amplitude. The amplitude compensation circuit further includes a second composite programmable buffer for receiving a second input signal with a second input amplitude. The amplitude compensation circuit also includes a feedback circuit coupled to respective outputs of the first and second composite programmable buffers. According to this embodiment, the feedback circuit compares a first output amplitude of the first composite programmable buffer with a reference voltage and a second output amplitude of the second composite programmable buffer with the reference voltage and provides first and second control signals for adjusting the respective gains of the first and second composite programmable buffers so as to reduce respective differences between the first and second output amplitudes and the reference voltage.

Method And System For Independent I And Q Loop Amplitude Control For Quadrature Generators

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US Patent:
7634027, Dec 15, 2009
Filed:
Dec 29, 2006
Appl. No.:
11/618719
Inventors:
Arya Behzad - Poway CA, US
Qiang Li - Irvine CA, US
Razieh Roufoogaran - Venice CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 25/06
US Classification:
375319, 375298, 375320
Abstract:
Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal.

Method And System For Mitigating The Effects Of Pulling In Multiple Phase Locked Loops In Multi-Standard Systems

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US Patent:
7869781, Jan 11, 2011
Filed:
Dec 29, 2006
Appl. No.:
11/618716
Inventors:
Qiang Li - Irvine CA, US
Razieh Roufoogaran - Venice CA, US
Arya Behzad - Poway CA, US
Dandan Li - San Diego CA, US
Hung-Ming Chien - Irvine CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04B 1/06
US Classification:
455230, 4555521, 455285, 4555531, 455207, 455209
Abstract:
Certain aspects of a method and system for mitigating effects of pulling in multiple phase locked loops in multi-standard systems may include selecting an input frequency range of operation at a voltage controlled oscillator based on a particular wireless band of operation in a system that handles a first wireless communication protocol and a second wireless communication protocol. An image rejection mixer may be enabled to generate an output signal for the particular wireless band of operation based on mixing a plurality of received signals within a selected frequency range. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing a RC-CR quadrature network.

Method And System For Flip Chip Configurable Rf Front End With An Off-Chip Balun

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US Patent:
7944322, May 17, 2011
Filed:
Apr 30, 2008
Appl. No.:
12/112258
Inventors:
Razieh Roufoogaran - Venice CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03H 7/42
H01P 1/10
H04B 1/40
US Classification:
333 25, 333101
Abstract:
Methods and systems for a flip chip configurable RF front end with an off-chip balun may include bonding a balun package to a single integrated circuit (IC) comprising an integrated transmitter and a receiver. The balun package may comprise one or more layers and may be electrically coupled to the IC. The balun package may comprise various devices such as, for example, inductors, capacitors, resistors, and/or switches, which may be on an exterior surface and/or inner layers of the balun package. Accordingly, the balun package and/or the IC may be configured for receiving RF signals and/or transmitting RF signals. The balun package and/or the IC may also be configured for single-ended RF input, single-ended RF output, differential RF input, and/or differential RF output. An off-chip amplifier may be used to amplify signals on the single transmit line in the single-ended RF output mode of operation.

Method And System For Independent I And Q Loop Amplitude Control For Quadrature Generators

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US Patent:
8036316, Oct 11, 2011
Filed:
Dec 7, 2009
Appl. No.:
12/632184
Inventors:
Arya Behzad - Poway CA, US
Qiang Li - Irvine CA, US
Razieh Roufoogaran - Venice CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 25/06
US Classification:
375319, 375298, 375320
Abstract:
Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal.

Method And System For Rc-Cr Quadrature Generation With Wideband Coverage And Process Compensation

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US Patent:
8073080, Dec 6, 2011
Filed:
Dec 29, 2006
Appl. No.:
11/618720
Inventors:
Qiang Li - Irvine CA, US
Razieh Roufoogaran - Venice CA, US
Keith Carter - Rancho Palos Verdes CA, US
Arya Behzad - Poway CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H03D 3/00
H04L 27/22
US Classification:
375332, 329304, 329337
Abstract:
Certain aspects of a method and system for RC-CR quadrature generation with wideband coverage and process compensation may include determining an amplitude mismatch between an in-phase (I) component and a quadrature (Q) component of a signal generated in a radio frequency (RF) transmitter or receiver. A variation in resistance of a quadrature network associated with the I component and Q component may be determined. The determined amplitude mismatch and the determined variation in the resistance of the quadrature network may be compensated by adjusting a resistance of a portion of the quadrature network associated with the I component and a resistance of a portion of the quadrature network associated with the Q component.

Method And System For Calibrating A Plurality Of Modules In A Communication System

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US Patent:
8102953, Jan 24, 2012
Filed:
Dec 29, 2006
Appl. No.:
11/618721
Inventors:
Razieh Roufoogaran - Venice CA, US
Arya Behzad - Poway CA, US
Qiang Li - Irvine CA, US
Assignee:
Broadcom Corporation - Irvine CA
International Classification:
H04L 27/08
H04B 1/18
US Classification:
375345, 455209, 455285
Abstract:
A method and system for calibrating a plurality of modules in a communication system is provided. The method may include selecting a plurality of modules with at least one output signal and calibrating an amplitude of each selected module to be within a specified range if the amplitude is out of the specified range via a gain control processing circuit of the selected module, wherein the plurality of modules may be calibrated in an order starting with a first module located at an input of a signal path and ending with a module located at an output of the signal path. The DC component and amplitude of the envelope of the output signal may be detected by circuitry within the selected module. Muxes may be utilized to route the DC component and amplitude of the envelope to a feedback control processing circuit.
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Razieh Roufoogaran from Santa Monica, CA, age ~46 Get Report