Searched for: author:"Madadi, I."
(1 - 6 of 6)
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Tohidian, M. (author), Madadi, I. (author), Staszewski, R.B. (author)
The zero/low intermediate frequency (IF) receiver (RX) architecture has enabled full CMOS integration. As the technology scales and wireless standards become ever more challenging, the issues related to time-varying dc offsets, the second-order nonlinearity, and flicker noise become more critical. In this paper, we propose a new architecture of...
journal article 2017
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Kuo, F.W. (author), Binsfeld Ferreira, S. (author), Chen, R. (author), Cho, L.C. (author), Jou, C.P. (author), Hsueh, F.L. (author), Madadi, I. (author), Tohidian, M. (author), Shahmohammadi, M. (author), Babaie, M. (author), Staszewski, R.B. (author)

We present an ultra-low-power Bluetooth low-energy (BLE) transceiver (TRX) for the Internet of Things (IoT) optimized for digital 28-nm CMOS. A transmitter (TX) employs an all-digital phase-locked loop (ADPLL) with a switched current-source digitally controlled oscillator (DCO) featuring low frequency pushing, and class-E/F2...

journal article 2017
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Madadi, I. (author), Tohidian, M. (author), Cornelissens, Koen (author), Vandenameele, Patrick (author), Staszewski, R.B. (author)
In this paper, we propose and demonstrate the first fully integrated surface acoustic wave (SAW)-less superheterodyne receiver (RX) for 4G cellular applications. The RX operates in discrete-time domain and introduces various innovations to simultaneously improve noise and linearity performance while reducing power consumption: a highly linear...
journal article 2016
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Madadi, I. (author)
There are nowadays strong business and technical demands to integrate radio- frequency (RF) receivers (RX) into a complete system-on-chip (SoC) realized in scaled digital processes technology. As a consequence, the RF circuitry has to function well in face of reduced power supply ( V DD ) while the CMOS device threshold voltage ( V th ) stays...
doctoral thesis 2015
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Madadi, I. (author), Tohidian, M. (author), Staszewski, R.B. (author)
A complex quadrature charge-sharing (CS) technique is proposed to implement a discrete-time band-pass filter (BPF) with a programmable bandwidth of 20–100 MHz. The BPF is part of a cellular superheterodyne receiver and completely determines the receiver frequency selectivity. It operates at the full sampling rate of up to 5.2 GHz corresponding...
journal article 2015
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Tohidian, M. (author), Madadi, I. (author), Staszewski, R.B. (author)
In this paper, we propose a discrete-time IIR low-pass filter that achieves a high-order of filtering through a charge-sharing rotation. Its sampling rate is then multiplied through pipelining. The first stage of the filter can operate in either a voltage-sampling or charge-sampling mode. It uses switches, capacitors and a simple gm-cell, rather...
journal article 2014
Searched for: author:"Madadi, I."
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