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 (130 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, Marcus Granger Jones: Dual antenna integrated carrier aggregation front end solution. RF Micro Devices, Withrow & Terranova P L L C, December 22, 2015: US09219594 (119 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 ...


3
Nadim Khlat: Power control loop using a tunable antenna matching circuit. RF Micro Devices, Withrow & Terranova P L L C, November 27, 2012: US08320850 (90 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 ...


4
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 (82 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 ...


5
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 (77 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 ...


6
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 (76 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 ...


7
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 (65 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 ...


8
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 (65 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 ...


9
Nadim Khlat: Power management system for multi-carriers transmitter. RF Micro Devices, Withrow & Terranova P L L C, November 19, 2013: US08588713 (64 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 ...


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 (49 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 ...