Patents by Inventor Yuda Yehuda Luz
Yuda Yehuda Luz 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: 7965990Abstract: An apparatus amplifies RF signals in a communication system by using a first directional coupler having at least two inputs and at least two outputs; at least two RF amplifiers, where an input of each RF amplifier is connected to a different one of the at least two outputs of the first directional coupler; and a second directional coupler having at least two inputs and at least two outputs, where each one of the at least two inputs is connected to an output of a different one of the at least two RF amplifiers. The at least two outputs of the second directional coupler are connected to at least two antennas, respectively.Type: GrantFiled: December 6, 2007Date of Patent: June 21, 2011Assignee: Motorola Mobility, Inc.Inventors: Yuda Yehuda Luz, Jiangnan Jason Chen
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Publication number: 20090149144Abstract: An apparatus amplifies RF signals in a communication system by using a first directional coupler having at least two inputs and at least two outputs; at least two RF amplifiers, where an input of each RF amplifier is connected to a different one of the at least two outputs of the first directional coupler; and a second directional coupler having at least two inputs and at least two outputs, where each one of the at least two inputs is connected to an output of a different one of the at least two RF amplifiers. The at least two outputs of the second directional coupler are connected to at least two antennas, respectively.Type: ApplicationFiled: December 6, 2007Publication date: June 11, 2009Applicant: MOTOROLA, INC.Inventors: Yuda Yehuda Luz, Jiangnan Jason Chen
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Patent number: 7489942Abstract: A method and apparatus provide for soft handoff operation of at least a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C).Type: GrantFiled: February 4, 2004Date of Patent: February 10, 2009Assignee: Motorola, Inc.Inventors: Louay Jalloul, Keith A. Tenbrook, Yuda Yehuda Luz, Jiangnan (Jason) Chen, Ron Rotstein
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Patent number: 6985099Abstract: An automatic gain control includes a digital lowpass filter for filtering a series of digital samples generated by an analog-to-digital converter to generate a lowpass filtered digital sample series; a power averager coupled to the digital lowpass filter for calculating an average power of the lowpass filtered digital sample series; and a lookup table coupled to the power averager for setting a selectable gain of an amplifier coupled to the analog-to-digital converter as a function of the average power.Type: GrantFiled: October 20, 2000Date of Patent: January 10, 2006Assignee: Motorola, Inc.Inventors: Yuda Yehuda Luz, Ron Rotstein, Gregory Agami
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Patent number: 6909707Abstract: A method and apparatus for reuse of pseudo-random noise (PN) offsets within a cell of a wireless communication system such as a multi-sector CDMA system. Adaptive antenna arrays are employed to form the multiple sector areas within the CDMA cell. A forward link data channel is established between a mobile unit and a base station via sectors that share or reuse comment PN offsets, thereby providing desirable transmit diversity.Type: GrantFiled: November 6, 2001Date of Patent: June 21, 2005Assignee: Motorola, Inc.Inventors: Ron Rotstein, Yuda Yehuda Luz, Robert T. Love, Dennis Ray Schaefer, Jiangnan (Jason) Chen, Colin Frank
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Publication number: 20040157609Abstract: A method and apparatus provide for soft handoff operation of at least a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C).Type: ApplicationFiled: February 4, 2004Publication date: August 12, 2004Inventors: Louay Jalloul, Keith A. Tenbrook, Yuda Yehuda Luz, Jiangnan Chen, Ron Rotstein
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Patent number: 6768908Abstract: A method and apparatus provide for soft handoff operation of at least a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C).Type: GrantFiled: April 7, 2000Date of Patent: July 27, 2004Assignee: Motorola, Inc.Inventors: Louay Jalloul, Keith A. Tenbrook, Yuda Yehuda Luz, Jiangnan (Jason) Chen, Ron Rotstein
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Publication number: 20030087640Abstract: A method and apparatus for reuse of pseudo-random noise (PN) offsets within a cell of a wireless communication system such as a multi-sector CDMA system. Adaptive antenna arrays are employed to form the multiple sector areas within the CDMA cell. A forward link data channel is established between a mobile unit and a base station via sectors that share or reuse comment PN offsets, thereby providing desirable transmit diversity.Type: ApplicationFiled: November 6, 2001Publication date: May 8, 2003Inventors: Ron Rotstein, Yuda Yehuda Luz, Robert T. Love, Dennis Ray Schaeffer, Jiangnan Chen, Colin Frank
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Patent number: 6324206Abstract: A current mode of operation is provided to a Walsh spreader (203), and based on the current mode of operation, the Walsh spreader (203) either varies a Walsh code at a symbol rate, or holds the Walsh code constant. During multi-carrier transmission a first symbol within a data stream (210) is spread with a first Walsh code, while symbols immediately preceding and following the first symbol are spread by a another, differing Walsh code. The sequence of Walsh codes exiting the spreader (201) is further scrambled by a pair of Pseudo-Noise (PN) codes (224) that are held constant for three Walsh code periods during multi-carrier transmission, and are not held constant during direct-spread transmission.Type: GrantFiled: February 23, 2000Date of Patent: November 27, 2001Assignee: Motorola, Inc.Inventors: Ron Rotstein, Yuda Yehuda Luz, Robert John Corke
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Patent number: 6167099Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).Type: GrantFiled: May 30, 1996Date of Patent: December 26, 2000Assignee: Motorola, Inc.Inventors: Shelia Marie Rader, Yuda Yehuda Luz, Daniel Morris Lurey
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Patent number: 6091759Abstract: A current mode of operation is provided to a Walsh spreader (203), and based on the current mode of operation, the Walsh spreader (203) either varies a Walsh code at a symbol rate, or holds the Walsh code constant. During multi-carrier transmission a first symbol within a data stream (210) is spread with a first Walsh code, while symbols immediately preceding and following the first symbol are spread by a another, differing Walsh code. The sequence of Walsh codes exiting the spreader (201) is further scrambled by a pair of Pseudo-Noise (PN) codes (224) that are held constant for three Walsh code periods during multi-carrier transmission, and are not held constant during direct-spread transmission.Type: GrantFiled: November 24, 1998Date of Patent: July 18, 2000Assignee: Motorola, Inc.Inventors: Ron Rotstein, Yuda Yehuda Luz, Robert John Corke
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Patent number: 6088399Abstract: A transmitter (300) comprises summers (301-307, 3178-319), and mixers (309-315, 333). During multi-carrier transmission, multiple I and Q components enter the transmitter. I.sub.1 is summed with I.sub.3, Q.sub.3 is subtracted from Q.sub.1, Q.sub.1 is added to Q.sub.3, and I.sub.3 is subtracted from I.sub.1. The outputs of a first and a second summer (301, 305) enters a first and a second mixer (309, 313) where they are mixed by a cosine function. Similarly, the outputs of a third and a fourth summer (303, 307) enter a third and a fourth mixer (311, 315) where they are mixed by a sine function. The output from first and the second mixer (309, 311) enter a first summer (317) where they are summed along with the I.sub.2 component. The output from the third and the fourth mixer (313, 315) enters a second summer (319) where they are summed along with the Q.sub.2 component.Type: GrantFiled: November 24, 1998Date of Patent: July 11, 2000Assignee: Motorola, Inc.Inventors: Yuda Yehuda Luz, Ron Rotstein
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Patent number: 5834972Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialize with a matrix of transform coefficients. A plurality of digital input signals (M.sub.1 -M.sub.4) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A.sub.1 -A.sub.4) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M.sub.1 -M.sub.4).Type: GrantFiled: October 11, 1996Date of Patent: November 10, 1998Assignee: Motorola, Inc.Inventors: Arthur Fred Schiemenz, Jr., Yuda Yehuda Luz, Dale Robert Anderson, Louay Adel Jalloul
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Patent number: 5818883Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).Type: GrantFiled: July 23, 1996Date of Patent: October 6, 1998Assignee: Motorola, Inc.Inventors: Paul Fielding Smith, John M. Smith, Alan P. Rottinghaus, Shelia Marie Rader, Danny Thomas Pinckley, Yuda Yehuda Luz, Daniel Morris Lurey, Kevin Michael Laird, Tony Kobrinetz, Robert C. Elder, Donald E. Bailey
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Patent number: 5812605Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).Type: GrantFiled: April 15, 1997Date of Patent: September 22, 1998Assignee: Motorola, inc.Inventors: Paul Fielding Smith, John M. Smith, Alan P. Rottinghaus, Shelia Marie Rader, Danny Thomas Pinckley, Yuda Yehuda Luz, Daniel Morris Lurey, Kevin Michael Laird, Tony Kobrinetz, Robert C. Elder, Donald E. Bailey
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Patent number: 5783969Abstract: In a hybrid matrix amplifier array (100), the amplitude of each of a plurality of input signals is measured (132-136, 202). In response to the signal amplitude measurements, an overload condition that will result in an amplifier overload in said hybrid matrix amplifier array is estimated (204, 206, 138). In response to the estimation of the overload condition, the signal amplitude of at least one of the plurality of input signals is modified to prevent the overload condition in the hybrid matrix amplifier array. An overload condition may be estimated if the sum of the amplitudes of the input signals exceeds a threshold (206). In one embodiment, all input signals are modified by proportionately reducing the amplitude of each of the plurality of input signals (304).Type: GrantFiled: September 4, 1996Date of Patent: July 21, 1998Assignee: Motorola, Inc.Inventor: Yuda Yehuda Luz
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Patent number: 5764104Abstract: An input signal (102) and a dithering signal (106) are coupled to an input of a n by m transform matrix (98). The input signal (102) and the dithering signal (106) are transformed to produce m transformed signals, which are then amplified using a plurality of amplifiers (64). The amplified signals are then input into an m by n inverse transform matrix (100) that performs an inverse transform to produce a low noise output signal. The low noise output signal may be passed through a band pass filter (74) to remove out-of-band noise derived from the dithering signal and provide a filtered output signal (110). The transform matrix (98) and inverse transform matrix (100) may be implemented with Fourier transform matrices or a Butler transform matrices.Type: GrantFiled: May 31, 1996Date of Patent: June 9, 1998Assignee: Motorola, Inc.Inventor: Yuda Yehuda Luz