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- Sanka Ganesan, E.S. Sanchez-Sinencio, José Silva-Martínez
- IEEE Transactions on Microwave Theory and…
- 2006

A low-noise amplifier (LNA) that achieves high third-order input intercept point (IIP3) at RF frequencies using a nonlinearity cancellation technique is proposed. The circuit tackles the problem of the effect of the second-order nonlinearity on IIP3 at RF frequencies. The circuit functionality is analyzed using Volterra series. The linear LNA was designed… (More)

- Mohamed El-Nozahi, E.S. Sanchez-Sinencio, Kamran Entesari
- IEEE Transactions on Microwave Theory and…
- 2009

A reconfigurable low-noise amplifier (LNA) with tunable input matching network is proposed. The tunable input matching network provides continuous tuning of the input resonant circuit. The LNA is implemented using 0.13-mum CMOS technology. The amplifier has a tuning range of 1.9-2.4 GHz with an input return loss better than -13 dB. The LNA has a measured… (More)

- Chandrakant Mishra, Alberto Valdes-Garcia, Faramarz Bahmani, Anjali Batra, E.S. Sanchez-Sinencio, José Silva-Martínez
- IEEE Transactions on Microwave Theory and…
- 2005

This work presents an analysis on frequency planning and synthesis for multiband (MB) orthogonal frequency-division multiplexing (OFDM) ultra-wideband (UWB) radios operating in the range of 3.1-10.6 GHz. The most important specifications for the frequency synthesizer in an MB-OFDM UWB transceiver are provided. A synthesizer architecture for an existing… (More)

- Eman A. Sobhy, Ahmed A. Helmy, Sebastian Hoyos, Kamran Entesari, E.S. Sanchez-Sinencio
- IEEE Transactions on Microwave Theory and…
- 2011

A wideband low-noise amplifier (LNA), which is a key block in the design of broadband receivers for multiband wireless communication standards, is presented in this paper. The LNA is a fully differential common-gate structure. It uses multiple feedback paths, which add degrees of freedom in the choice of the LNA transconductance to reduce the noise figure… (More)

This paper describes the design and implementation of a second-order switched-capacitor (SC) bandpass (BP) filter with very wide quality factor (Q) programmability range. The filter selectivity is digitally programmed by varying the effective sampling frequency of an SC branch, without modifying any capacitor value. The proposed approach allows a… (More)

- Alberto Valdes-Garcia, Waleed Khalil, Bertan Bakkaloglu, José Silva-Martínez, E.S. Sanchez-Sinencio
- 2007 IEEE Radio Frequency Integrated Circuits…
- 2007

Built-in self test techniques for local oscillator phase noise, RF front-end circuits, baseband building blocks and transceiver loop-back are described. CMOS implementation of integrated RF test components, including RF detectors and phase discriminators are introduced. These devices eliminate the need for expensive external test equipment. The presented… (More)

- Chandrakant Mishra, Alberto Valdes-Garcia, E.S. Sanchez-Sinencio, José Silva-Martínez
- IEEE Radio Frequency Integrated Circuits (RFIC…
- 2006

A fast-switching carrier frequency generator for multi-band UWB radios is presented. It generates 11 carrier frequencies in quadrature in the range of 3.7-10GHz from a single frequency source. The architecture consists of a series of dividers, single sideband mixers with filtering and multiplexers. The IC is implemented in a 0.25mum SiGe BiCMOS technology… (More)

This paper presents a new Built-In Self-Test for Pipeline ADC’s. The test set is divided in 3 parts: Monotonicity test for basic functionality verification, DC gain of each stage and frequency bandwidth of each stage. The approach is based on the “Divide and conquer” principle. Adaptive schemes are used to get a precise analog timer, ramp generator and… (More)

- A. Emira, Alberto Valdes-Garcia, +5 authors E.S. Sanchez-Sinencio
- 2004 IEE Radio Frequency Integrated Circuits…
- 2004

A fully integrated direct conversion receiver, supporting both Bluetooth and 802.11b standards, is implemented using IBM 0.25 /spl mu/m BiCMOS technology. The RF front-end is shared between both standards while the baseband blocks are programmable for each receiving mode. All the components of the receiver from the LNA to the ADC are integrated using 19… (More)

Efficient procedures for evaluating nonlinear distortion and noise valid for any OTA-C filter of arbitrary order are developed based on matrix description of a general OTA-C filter model. Since those procedures use OTA macromodels, they allow us to obtain the results significantly faster than transistor-level simulation. On the other hand, the general OTA-C… (More)