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This paper presents the design challenges and solutions for 4 G nanometer radio receivers for mobile devices. The specifications for the ZERO-IF/LOW-IF 4 G receiver architecture are derived. Limitations due to the use of low-voltage nanometer technologies are described and novel circuit technique mobile systems, such as wideband noise reduction, inductor-less peaking, passive mixing, and low flicker...
Convergence into 4G wireless communication systems pushes the design of radio receivers beyond limits unconceivable only few years ago. The complexity of RF systems has increased enormously as new communication standards have appeared in the wireless scenario. The convergence trends, enabled by the advances in fabrication technology, have driven the software defined radio (SDR) more and more into...
This paper presents the design methodology and underlying algorithms of a tool developed for automated receiver design and optimization for fourth generation (4G) wireless communication systems. An algorithm to systematically design and optimize the receiver budget for the multi-standard case is introduced. The goal of this algorithm is to find a multi-standard receiver budget that meets or exceeds...
A reconfigurable ADC based on a 2-2 modified cascaded SigmaDelta modulator designed for a GSM/WCDMA/WLAN/WiMAX zero-IF receiver has been presented. Employing the second-order feedforward SigmaDelta modulator in a 2-2 modified cascaded configuration, a high linearity over 100 kHz/2 MHz/10 MHz signal bandwidth is achieved. The P-DWA technique is applied in the first feedback 4-b DAC to eliminate the...
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