Patents by Inventor Hakan Inanoglu
Hakan Inanoglu 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).
-
Publication number: 20240097801Abstract: A wireless communication device is provided with an in-device capability of characterizing the coupling between a pair of antennas. The wireless communication device determines the coupling through an operating gain measurement and through calibration gain measurements obtained through test ports.Type: ApplicationFiled: September 21, 2022Publication date: March 21, 2024Inventors: Erwin SPITS, Francesco GATTA, Adrianus VAN BEZOOIJEN, Leon METREAUD, Hakan INANOGLU
-
Publication number: 20240097800Abstract: A wireless communication device is provided with an in-device capability of characterizing the coupling between a pair of antennas. The wireless communication device determines the coupling through an operating gain measurement and through calibration gain measurements obtained through test ports.Type: ApplicationFiled: September 21, 2022Publication date: March 21, 2024Inventors: Erwin SPITS, Francesco GATTA, Adrianus VAN BEZOOIJEN, Leon METREAUD, Hakan INANOGLU
-
Publication number: 20230396219Abstract: Aspects of the present disclosure provide signal amplification. An example method generally includes amplifying a version of a first input signal with a power amplifier in a first state where a bias voltage of the power amplifier is set to a first voltage based on a first tracking mode; obtaining a first output signal of the power amplifier in a second state where the bias voltage is set to a second voltage less than the first voltage; determining a predistortion associated with the power amplifier based at least in part on the obtained first output signal; applying the predistortion to the first input signal; and amplifying a version of the predistorted first input signal with the power amplifier in a third state where the bias voltage is set to a third voltage based on a second tracking mode, wherein the third voltage is less than the first voltage.Type: ApplicationFiled: June 2, 2022Publication date: December 7, 2023Inventors: Jiri STULEMEIJER, Christos KOMNINAKIS, Robert WILSON, Hakan INANOGLU, Ryan Scott Castro SPRING, Antonino SCUDERI, Michael Lee MCCLOUD
-
In-situ measurement of the delay between the envelope and the RF signal in envelope-tracking systems
Patent number: 10992308Abstract: An in-situ delay measurement is performed for an envelope-tracking power amplifier of an RF input signal. Because the delay measurement is in-situ, the delay measurement avoids the necessity to down convert and digitize a version of an RF output signal from the envelope-tracking power amplifier.Type: GrantFiled: April 29, 2020Date of Patent: April 27, 2021Assignee: QUALCOMM IncorporatedInventors: Chirag Sthalekar, Leon Metreaud, Hakan Inanoglu, Xiangdong Zhang -
Publication number: 20150194936Abstract: Exemplary embodiments are related to a wireless transmitter device. A device may include a power amplifier configured to receive a supply voltage and an input signal. The device may further include switch coupled to the supply voltage and the power amplifier via an inductor and configured to couple the inductor to one of a ground voltage and the supply voltage. The device may also include a prediction engine configured to receive the input signal and convey a signal to the switch to couple the inductor to the ground voltage upon detection of an overshoot event.Type: ApplicationFiled: January 9, 2014Publication date: July 9, 2015Applicant: QUALCOMM IncorporatedInventors: Hakan INANOGLU, Daniel Fred FILIPOVIC, Jifeng GENG, Leon T. METREAUD
-
Patent number: 8787248Abstract: An echo cancellation wireless repeater with first and second antenna arrays having vertical and horizontal feed antenna elements selects a combination of antenna elements for reception and transmission to reduce interference and improve the quality of signal reception. In one embodiment, the antenna elements are switchably connected to transceiver circuits and a combination of antenna elements is selected based on the best desired performance result. In another embodiment, the antenna elements are each connected to its own transceiver circuit and the echo cancellation repeater performs beamforming in baseband to select a combination of antenna elements.Type: GrantFiled: June 7, 2011Date of Patent: July 22, 2014Assignee: QUALCOMM IncorporatedInventors: James Arthur Proctor, Jr., Kenneth M. Gainey, Steven J. Howard, Hakan Inanoglu
-
Patent number: 8477665Abstract: A wireless repeater with an antenna array determines the antenna weights to modify the spatial selectivity of the antenna array to reduce interference and improve the quality of signal reception. The antenna weights are determined using an error minimizing algorithm to minimize the error between a desired receive signal and a reference signal or an adaptive metric optimization algorithm to calculate adaptively antenna weights to minimize the signal-to-noise ratio of a desired receive signal.Type: GrantFiled: July 14, 2010Date of Patent: July 2, 2013Assignee: QUALCOMM IncorporatedInventors: James Arthur Proctor, Jr., Kenneth M. Gainey, Steven J. Howard, Hakan Inanoglu
-
Publication number: 20120300818Abstract: A method for a self-calibrating reduction in inphase/quadrature imbalance is described. An inphase/quadrature amplitude imbalance is calculated. A correction to the inphase/quadrature amplitude imbalance is applied. An estimated inphase/quadrature phase imbalance is calculated. Calculating an estimated inphase/quadrature phase imbalance includes calculating a loopback phase. A correction to the estimated inphase/quadrature amplitude imbalance is applied.Type: ApplicationFiled: March 29, 2012Publication date: November 29, 2012Applicant: QUALCOMM INCORPORATEDInventors: Leon Teruo Metreaud, Hakan Inanoglu
-
Patent number: 8285201Abstract: A wireless repeater having a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal includes first and second front-end circuits and a repeater baseband block coupled between the first and second front-end circuits. The repeater baseband block includes a channel estimation block, an echo canceller implementing time domain echo cancellation, a variable gain stage controlled by a gain control block implementing digital gain control, a first variable delay element introducing a first delay before or after the echo canceller, a second variable delay element introducing a second delay to the output signal. The delayed output signal is coupled to the channel estimation block as a reference signal for estimating the feedback channel, to the echo canceller as a reference signal for estimating the feedback signal, and to the gain control block for monitoring the stability of the repeater.Type: GrantFiled: October 30, 2009Date of Patent: October 9, 2012Assignee: QUALCOMM IncorporatedInventors: Dhananjay Ashok Gore, Gwendolyn Denise Barriac, James Arthur Proctor, Jr., Steven J. Howard, Hakan Inanoglu, Kenneth M. Gainey, Michael Mao Wang, Tao Tian
-
Publication number: 20120015603Abstract: An echo cancellation wireless repeater with first and second antenna arrays having vertical and horizontal feed antenna elements selects a combination of antenna elements for reception and transmission to reduce interference and improve the quality of signal reception. In one embodiment, the antenna elements are switchably connected to transceiver circuits and a combination of antenna elements is selected based on the best desired performance result. In another embodiment, the antenna elements are each connected to its own transceiver circuit and the echo cancellation repeater performs beamforming in baseband to select a combination of antenna elements.Type: ApplicationFiled: June 7, 2011Publication date: January 19, 2012Applicant: QUALCOMM IncorporatedInventors: James Arthur Proctor, JR., Kenneth M. Gainey, Steven J. Howard, Hakan Inanoglu
-
Publication number: 20120015608Abstract: A wireless repeater with an antenna array determines the antenna weights to modify the spatial selectivity of the antenna array to reduce interference and improve the quality of signal reception. The antenna weights are determined using an error minimizing algorithm to minimize the error between a desired receive signal and a reference signal or an adaptive metric optimization algorithm to calculate adaptively antenna weights to minimize the signal-to-noise ratio of a desired receive signal.Type: ApplicationFiled: July 14, 2010Publication date: January 19, 2012Applicant: QUALCOMM IncorporatedInventors: James Arthur Proctor, JR., Kenneth M. Gainey, Steven J. Howard, Hakan Inanoglu
-
Patent number: 8000382Abstract: Certain aspects and embodiments provide for accurate measurement and estimation of imbalances between in-phase (I) and quadrature (Q) components of a complex baseband signal. The accuracy of I/Q phase imbalance estimates may be enhanced by conducting them on a transmitter and a receiver that are connected via a local, loopback connection and by removing cross-spectrum interference in transferred packets. Once these accurate I/Q phase imbalances are determined, they may be used to adjust a signal processed by the transmitter or the receiver to increase the performance and data throughput of communications using the signal.Type: GrantFiled: January 4, 2008Date of Patent: August 16, 2011Assignee: Qualcomm IncorporatedInventors: Hakan Inanoglu, Leon Metreaud, Mark S. Wallace, Xiangdong Zhang
-
Patent number: 7991067Abstract: Techniques for calibrating the transmit and receive chains at a wireless entity are described. For a pre-calibration, N first overall gains for a receiver unit and N transmitter units in the transmit chain are obtained, where N>1. Each first overall gain is for a combined response for the receiver unit and the associated transmitter unit. N second overall gains for a transmitter unit and N receiver units in the receive chain are also obtained. Each second overall gain is for a combined response for the transmitter unit and the associated receiver unit. The gain of each transmitter unit and the gain of each receiver unit are determined based on the first and second overall gains. At least one correction matrix is then derived based on the gains of the transmitter and receiver units and is used to account for the responses of these units.Type: GrantFiled: December 23, 2008Date of Patent: August 2, 2011Assignee: QUALCOMM, IncorporatedInventor: Hakan Inanoglu
-
Patent number: 7895254Abstract: Techniques for decomposing matrices using Jacobi rotation are described. Multiple iterations of Jacobi rotation are performed on a first matrix of complex values with multiple Jacobi rotation matrices of complex values to zero out the off-diagonal elements in the first matrix. For each iteration, a submatrix may be formed based on the first matrix and decomposed to obtain eigenvectors for the submatrix, and a Jacobi rotation matrix may be formed with the eigenvectors and used to update the first matrix. A second matrix of complex values, which contains orthogonal vectors, is derived based on the Jacobi rotation matrices. For eigenvalue decomposition, a third matrix of eigenvalues may be derived based on the Jacobi rotation matrices. For singular value decomposition, a fourth matrix with left singular vectors and a matrix of singular values may be derived based on the Jacobi rotation matrices.Type: GrantFiled: November 15, 2005Date of Patent: February 22, 2011Assignee: Qualcomm IncorporatedInventors: John W. Ketchum, Jay Rodney Walton, Mark S. Wallace, Steven J. Howard, Hakan Inanoglu
-
Publication number: 20110013724Abstract: Techniques for performing inphase/quadrature (I/Q) imbalance estimation and compensation are described. In one exemplary design, I/Q imbalances in a receiver may be estimated by (i) applying a continuous wave signal at different frequencies to the receiver and (ii) processing I and Q input samples from the receiver to determine I/Q imbalances at different frequencies. In another exemplary design, I/Q imbalances may be estimated by (i) downconverting an input RF signal with an LO signal that is offset in frequency from the input RF signal, (ii) transforming I and Q input samples from the receiver to the frequency domain to obtain I and Q symbols, and (iii) determining I/Q imbalances based on the I and Q symbols. In one exemplary design, I/Q imbalances may be corrected by compensating for frequency-dependent and frequency-independent I/Q imbalances separately. I/Q imbalances in a transmitter may also be estimated and compensated.Type: ApplicationFiled: April 24, 2009Publication date: January 20, 2011Applicant: QUALCOMM INCORPORATEDInventors: Leon Teruo Metreaud, Hakan Inanoglu, Xiangdong Zhang, Zhengi Q. Chen
-
Publication number: 20100285733Abstract: A wireless repeater having a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal includes first and second front-end circuits and a repeater baseband block coupled between the first and second front-end circuits. The repeater baseband block includes a channel estimation block, an echo canceller implementing time domain echo cancellation, a variable gain stage controlled by a gain control block implementing digital gain control, a first variable delay element introducing a first delay before or after the echo canceller, a second variable delay element introducing a second delay to the output signal. The delayed output signal is coupled to the channel estimation block as a reference signal for estimating the feedback channel, to the echo canceller as a reference signal for estimating the feedback signal, and to the gain control block for monitoring the stability of the repeater.Type: ApplicationFiled: October 30, 2009Publication date: November 11, 2010Applicant: QUALCOMM IncorporatedInventors: Dhananjay Ashok Gore, Gwendolyn Denise Barriac, James Arthur Proctor, JR., Steven J. Howard, Hakan Inanoglu, Kenneth M. Gainey, Michael Mao Wang, Tao Tian
-
Publication number: 20100183088Abstract: Techniques for calibrating the transmit and receive chains at a wireless entity are described. For a pre-calibration, N first overall gains for a receiver unit and N transmitter units in the transmit chain are obtained, where N>1. Each first overall gain is for a combined response for the receiver unit and the associated transmitter unit. N second overall gains for a transmitter unit and N receiver units in the receive chain are also obtained. Each second overall gain is for a combined response for the transmitter unit and the associated receiver unit. The gain of each transmitter unit and the gain of each receiver unit are determined based on the first and second overall gains. At least one correction matrix is then derived based on the gains of the transmitter and receiver units and is used to account for the responses of these units.Type: ApplicationFiled: December 23, 2008Publication date: July 22, 2010Applicant: QUALCOMM INCORPORATEDInventor: Hakan Inanoglu
-
Publication number: 20090322621Abstract: The present disclosure provides techniques for configuring multi-element antenna arrays. Such antenna arrays may be designed with slot pairs separated by ?/2 along perpendicular axes (e.g., x and y-directions). One such array may have four or more co-located antenna element pairs formed with cross slots having the same rotational orientation. Another such array may have four or more co-located antenna element pairs formed with some cross slots having the same rotational orientation and other cross slots having a different rotational orientation.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: QUALCOMM IncorporatedInventors: Hakan Inanoglu, John W. Ketchum, Leon Metreaud, Mark S. Wallace
-
Publication number: 20090175398Abstract: Certain aspects and embodiments provide for accurate measurement and estimation of imbalances between in-phase (I) and quadrature (Q) components of a complex baseband signal. The accuracy of I/Q phase imbalance estimates may be enhanced by conducting them on a transmitter and a receiver that are connected via a local, loopback connection and by removing cross-spectrum interference in transferred packets. Once these accurate I/Q phase imbalances are determined, they may be used to adjust a signal processed by the transmitter or the receiver to increase the performance and data throughput of communications using the signal.Type: ApplicationFiled: January 4, 2008Publication date: July 9, 2009Applicant: QUALCOMM INCORPORATEDInventors: Hakan Inanoglu, Leon Metreaud, Mark S. Wallace, Xiangdong Zhang
-
Patent number: 7486740Abstract: Techniques for calibrating the transmit and receive chains at a wireless entity are described. For a pre-calibration, N first overall gains for a receiver unit and N transmitter units in the transmit chain are obtained, where N>1. Each first overall gain is for a combined response for the receiver unit and the associated transmitter unit. N second overall gains for a transmitter unit and N receiver units in the receive chain are also obtained. Each second overall gain is for a combined response for the transmitter unit and the associated receiver unit. The gain of each transmitter unit and the gain of each receiver unit are determined based on the first and second overall gains. At least one correction matrix is then derived based on the gains of the transmitter and receiver units and is used to account for the responses of these units.Type: GrantFiled: April 2, 2004Date of Patent: February 3, 2009Assignee: Qualcomm IncorporatedInventor: Hakan Inanoglu