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Design of RF Receiver Front-End for Low Power Applications
, Ph.D. Dissertation Sharif University of Technology ; Medi, Ali (Supervisor) ; Meghdadi, Masoud (Co-Supervisor)
Abstract
The quest for reducing power consumption, external components and chip area in integrated circuits is never ended. One of the solutions is to use circuit re-use techniques whereas most of the blocks have multi tasks in the architecture. Besides that, the bias current is shared between the various parts of the system. Consequently, the total power and chip area are reduced. This thesis introduces Blixator (Balun, LNA, Mixer and Oscillator) circuit as a new generation of circuit and current re-use topologies for low power applications. The receiver has been designed for BLE applications. It exhibits a NF of 10.5 dB, IIP3 of -15.5 dBm, IRR of 23 dB, input impedance matching of -15 dB in 80 MHz...
A current Re-use quadrature RF receiver front-end for low power applications: blixator circuit
, Article IEEE Journal of Solid-State Circuits ; Volume 57, Issue 9 , 2022 , Pages 2672-2684 ; 00189200 (ISSN) ; Ghafari, A ; Meghdadi, M ; Medi, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
This article presents the theory and implementation of a quadrature and differential RF front-end receiver. Combining balun, low-noise amplifier (LNA), mixer, and oscillator in a single stage, the proposed circuit, named the Blixator, is well suited for low-power applications. The baseband's transimpedance amplifier (TIA) also shares part of its dc current with the Blixator cell, resulting in sub-milliwatt power consumption. To avoid additional power and area by quadrature LO generation, the I/Q signals are generated at RF, employing the inductors already required for providing the dc current path of the LNA transistors. The expressions for gain, noise figure (NF), and phase noise of the...