1
Jason Young, Dennis Mahoney, Ricke W Clark, Nadim Khlat, Adam Toner: N-th order curve fit for power calibration in a mobile terminal. RF Micro Devices, Withrow & Terranova P L L C, May 5, 2009: US07529523 (122 worldwide citation)

A method for calibrating the output power of a mobile terminal using at least a second order curve fit to describe a power amplifier gain (PAG) setting versus output power characteristic of a power amplifier in a transmitter of the mobile terminal is provided. For each of an upper-band frequency, a ...


2
Nadim Khlat: Power control loop using a tunable antenna matching circuit. RF Micro Devices, Withrow & Terranova P L L C, November 27, 2012: US08320850 (80 worldwide citation)

The present disclosure relates to combining tunable antenna matching circuit adjustments and RF power amplifier output power adjustments of a first RF terminal in response to output power adjustment commands received from a second RF terminal. The output power adjustment commands may be part of an o ...


3
Nadim Khlat, Ruediger Bauder: Power control system for a continuous time mobile transmitter. RF Micro Devices, Withrow & Terranova P L L C, August 10, 2010: US07773691 (75 worldwide citation)

Power control circuitry is provided for controlling an output power of a transmitter of a mobile terminal operating according to a continuous time transmit scheme such as Wideband Code Division Multiple Access (WCDMA). Transmit circuitry processes a quadrature baseband signal to provide a radio freq ...


4
Nadim Khlat, Joseph Hubert Colles: Single charge-pump buck-boost for providing independent voltages. RF Micro Devices, Withrow & Terranova P L L C, December 31, 2013: US08618868 (69 worldwide citation)

Disclosed is a charge pump having first and second outputs and at least one capacitor. A plurality of switches are coupled to the at least one capacitor for selectively coupling the at least one capacitor between a high voltage node and a low voltage node, and for selectively coupling the at least o ...


5
Nadim Khlat, Joseph Hubert Colles: Charge-pump system for providing independent voltages. RF Micro Devices, Withrow & Terranova P L L C, January 7, 2014: US08624576 (68 worldwide citation)

Disclosed is a charge pump system having a charge pump with a switch control input, a voltage output terminal, a high voltage terminal coupled to a high voltage node and a low voltage terminal coupled to a low voltage node. Also included is a first buck/boost switch having a first terminal coupled t ...


6
Christopher Truong Ngo, Nadim Khlat: Apparatuses and methods for rate conversion and fractional delay calculation using a coefficient look up table. RF Micro Devices, Withrow & Terranova P L L C, January 7, 2014: US08624760 (58 worldwide citation)

A system and method for performing sample rate conversion and creating fractional delays to a signal is disclosed. The system comprises a filter, a look up table for storing coefficients for sample rate conversion and fractional delays, and control circuitry configured to use an indexing scheme to s ...


7
Nadim Khlat, Andrew F Folkmann, James M Retz: Envelope tracking with variable compression. RF Micro Devices, Withrow & Terranova P L L C, January 7, 2014: US08626091 (58 worldwide citation)

Radio frequency (RF) transmitter circuitry, which includes an envelope tracking power supply and an RF power amplifier (PA), is disclosed. The RF PA operates in either a first operating mode or a second operating mode, such that selection of the operating mode is based on compression tolerance crite ...


8
Nadim Khlat: Power management system for multi-carriers transmitter. RF Micro Devices, Withrow & Terranova P L L C, November 19, 2013: US08588713 (57 worldwide citation)

A power management system for a multi-carriers transmitter is disclosed. The power management system includes a first switcher having a control input and a power output, and a second switcher having a control input and a power output. Also included is a mode switch having a mode control input, where ...


9
Nadim Khlat, Marcus Granger Jones: Dual antenna integrated carrier aggregation front end solution. RF Micro Devices, Withrow & Terranova P L L C, December 22, 2015: US09219594 (55 worldwide citation)

Radio frequency front end circuitry comprises a first antenna port, a second antenna port, antenna switching circuitry, a first diplexer, and a second diplexer. The antenna switching circuitry is coupled to each of the first antenna port and the second antenna port through the first diplexer and the ...


10
Nadim Khlat, Michael R Kay, Philippe Gorisse: Pseudo-envelope follower power management system with high frequency ripple current compensation. RF Micro Devices, Withrow & Terranova P L L C, January 21, 2014: US08633766 (41 worldwide citation)

Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system including a parallel amplifier and a switch mode power supply converter cooperatively coupled to generate a power supply voltage at a power supply output coupled to a linear RF power amplif ...



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