With Tuned Circuit Patents (Class 327/329)
-
Patent number: 11848666Abstract: Methods and devices to reduce the switching time of radio frequency (RF) switches including antenna switches are disclosed. The disclosed teachings include selective bypassing of the capacitive and resistive elements of the circuit during the transition of RF switches from one state to another. Several implementations of the disclosed methods and devices are also presented.Type: GrantFiled: June 3, 2022Date of Patent: December 19, 2023Assignee: pSemi CorporationInventors: Joseph Porter Slaton, Parvez Daruwalla
-
Patent number: 8416738Abstract: A communication method for at least one mobile station that includes a target mobile station that performs a Cooperative Multi-Point (CoMP) communication with at least two base stations, is provided. The communication method includes determining a beamforming vector used by the at least two base stations based on channel vectors and at least one channel matrix such that a signal-to-leakage-plus-noise-ratio (SLNR) for a target antenna from among antennas of a target mobile station is maximized. A Cholesky factorization may be used to determine an optimal beamforming vector with a low complexity.Type: GrantFiled: September 30, 2010Date of Patent: April 9, 2013Assignees: Samsung Electronics Co., Ltd., Korea Advanced Institute of Science and TechnologyInventors: Won Jae Shin, Young Jun Hong, Jung Hyun Park, Chang Yong Shin, Dong Jo Park
-
Patent number: 8243479Abstract: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.Type: GrantFiled: September 19, 2011Date of Patent: August 14, 2012Assignee: Micron Technology, Inc.Inventor: Houfei Chen
-
Patent number: 8023293Abstract: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.Type: GrantFiled: November 24, 2009Date of Patent: September 20, 2011Assignee: Micron Technology, Inc.Inventor: Houfei Chen
-
Patent number: 7902883Abstract: In one embodiment, a system includes a replica driver that includes n-type digital-to-analog converter (NDAC) current sources. The replica driver can produce a reference voltage based on current supplied by the NDAC current sources. The system includes driver fingers that are coupled to the replica driver and each include a driver bias circuit and an output driver. The driver bias circuit includes an operational amplifier (op-amp) that can adjust current-source gate voltage in the output driver to produce voltages at output nodes of the driver fingers that approximately match the reference voltage produced by the replica driver.Type: GrantFiled: June 22, 2009Date of Patent: March 8, 2011Assignee: Fujitsu LimitedInventor: Yasuo Hidaka
-
Patent number: 7633773Abstract: A structure and method for reducing the effects of chip-package resonance in an integrated circuit assembly is described. A series RLC circuit is employed to reduce the output impedance of the power delivery system at the resonance frequency.Type: GrantFiled: May 10, 2006Date of Patent: December 15, 2009Assignee: Micron Technology, Inc.Inventor: Houfei Chen
-
Patent number: 6140858Abstract: The invention relates to a predistortion circuit for an analog signal in a video communication network. In one embodiment the circuit according to the invention includes a primary branch connecting an input to an output, a delay circuit for delaying a signal in the primary branch, a first coupler/shunting device which samples a fraction of the input signal, a secondary branch connected to the shunting output of the coupler/shunting device, the secondary branch including a second-harmonic generator, and a second coupler/shunting device which receives the output signal from the secondary branch and adds it to the signal at the output of the primary branch. The circuit according to the invention makes possible a symmetrical filter with improved performance characteristics and low manufacturing cost.Type: GrantFiled: November 18, 1997Date of Patent: October 31, 2000Assignee: U.S. Philips CorporationInventor: Fran.cedilla.ois Dumont
-
Patent number: 5793127Abstract: An inductive load driver circuit with shared flyback protection includes a first transistor (209) which drives a first load (229), and a second transistor (231) drives a second load (251). A first clamp voltage steering diode (217) is coupled between an input terminal (207) of the first transistor (209) and a zener diode (203), and a second clamp voltage steering diode (239) coupled between an input terminal (233) of the second transistor (231) and the zener diode (203). A power supply terminal (201) is coupled to the zener diode (203).Type: GrantFiled: August 2, 1996Date of Patent: August 11, 1998Assignee: Motorola Inc.Inventor: John R. Qualich
-
Patent number: 5793245Abstract: A switch mode regulator circuit is provided to facilitate the conversion from one voltage level to another in a substantially power lossless manner. The circuit is particularly advantageous in instances where the power supply can be operable in a discontinuous mode, as inductor-capacitor oscillatory transients ("ringing"), along with its associated voltage spikes at the associated output transistor source, can be avoided. Such transients and their associated voltages are avoided by clamping the gate-source voltage on the circuit's output NMOS transistor over the entire positive operation voltage range.Type: GrantFiled: October 15, 1996Date of Patent: August 11, 1998Assignee: Texas Instruments IncorporatedInventors: Andrew Marshall, Joseph A. Devore, Raymond T. Summerlin