Ehsan Afshari

According to our database, Ehsan Afshari authored at least 70 papers between 2003 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2025

Broadband Harmonic-Assisted Power and Efficiency Enhancement in a 174-232-GHz SiGe Voltage-Controlled Oscillator.

Hamidreza Aghasi, Xuyang Liu, Morteza Tavakolli Taba, Amirata Tabatabavakili, Ehsan Afshari

IEEE J. Solid State Circuits, June, 2025

2024

Parallel Versus Serial: Design of an Optical Receiver With Integrated Blue Photodetectors and Digitally Tunable Low-End Cutoff Frequency for MicroLED-Based Parallel Interchip Communication.

Farzad Khoeini, Bardia Pezeshki, Emad Afifi, Alex Tselikov, Robert F. Kalman, Bahareh Hadidian, Ehsan Afshari

IEEE J. Solid State Circuits, May, 2024

A Fast Back-to-Lock DPLL-Based 192-210-GHz Chirp Generator With +5.9-dBm Peak Output Power for Sub-THz Imaging and Sensing.

Lili Chen, Morteza Tavakoli Taba, Zainulabideen J. Khalifa, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, May, 2024

A High-Efficiency High-Power 170-176-GHz Frequency Stabilized Quadrature Radiator.

Lili Chen, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, January, 2024

24.4 Sub-THz Ruler: Spectral Bistability in a 235GHz Self-Injection-Locked Oscillator for Agile and Unambiguous Ranging.

S. M. Hossein Naghavi, Morteza Tavakoli Taba, Amirata Tabatabavakili, Ali Mostajeran, Mohammed Aseeri, Andreia Cathelin, Ehsan Afshari

Proceedings of the IEEE International Solid-State Circuits Conference, 2024

2023

AnGeL: Fully-Automated Analog Circuit Generator Using a Neural Network Assisted Semi-Supervised Learning Approach.

Morteza Fayazi, Morteza Tavakoli Taba, Ehsan Afshari, Ronald G. Dreslinski

IEEE Trans. Circuits Syst. I Regul. Pap., November, 2023

FuNToM: Functional Modeling of RF Circuits Using a Neural Network Assisted Two-Port Analysis Method.

Morteza Fayazi, Morteza Tavakoli Taba, Amirata Tabatabavakili, Ehsan Afshari, Ronald G. Dreslinski

Proceedings of the IEEE/ACM International Conference on Computer Aided Design, 2023

A 53-62 GHz Two-channel Differential 6-bit Active Phase Shifter in 55-nm SiGe Technology.

Morteza Tavakoli Taba, S. M. Hossein Naghavi, Sara Shoouri, Andreia Cathelin, Ehsan Afshari

Proceedings of the 49th IEEE European Solid State Circuits Conference, 2023

A Compact CMOS 363 GHz Autodyne FMCW Radar with 57 GHz Bandwidth for Dental Imaging.

Morteza Tavakoli Taba, S. M. Hossein Naghavi, Morteza Fayazi, Ali Sadeghi, Andreia Cathelin, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2023

A 194-238GHz Fully On-Chip Self-Referenced Frequency Stabilized Radiator for High Range Resolution Imaging.

Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Kamal Sarabandi, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2023

A Low-Power 20Gb/s 196GHz BPSK Wireless Transmitter with Energy Efficiency FoM of 0.15pJ/bit/cm.

Lili Chen, Morteza Tavakoli Taba, Andreia Cathelin, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2023

2022

A 220-GHz Energy-Efficient High-Data-Rate Wireless ASK Transmitter Array.

Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2022

A Review on the State-of-the-Art THz FMCW Radars Implemented on Silicon: Invited.

Morteza Tavakoli Taba, S. M. Hossein Naghavi, Ehsan Afshari

Proceedings of the 48th IEEE European Solid State Circuits Conference, 2022

2021

A Transimpedance-to-Noise Optimized Analog Front-End With High PSRR for Pulsed ToF Lidar Receivers.

Farzad Khoeini, Bahareh Hadidian, Keshu Zhang, Ehsan Afshari

IEEE Trans. Circuits Syst. I Regul. Pap., 2021

Applications of Artificial Intelligence on the Modeling and Optimization for Analog and Mixed-Signal Circuits: A Review.

Morteza Fayazi, Zachary Colter, Ehsan Afshari, Ronald G. Dreslinski

IEEE Trans. Circuits Syst. I Regul. Pap., 2021

A 250GHz Autodyne FMCW Radar in 55nm BiCMOS with Micrometer Range Resolution.

S. M. Hossein Naghavi, Saghar Seyedabbaszadehesfahlani, Farzad Khoeini, Andreia Cathelin, Ehsan Afshari

Proceedings of the IEEE International Solid-State Circuits Conference, 2021

An Energy Efficient Fully Integrated 20Gbps OOK Wireless Transmitter at 220GHz.

Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2021

2019

A System of Two Coupled Oscillators With a Continuously Controllable Phase Shift.

Vahnood Pourahmad, Farzad Khoeini, Ehsan Afshari

IEEE Trans. Circuits Syst. I Regul. Pap., 2019

A 53-67 GHz Low-Noise Mixer-First Receiver Front-End in 65-nm CMOS.

Milad Haghi Kashani, Amirahmad Tarkeshdouz, Ehsan Afshari, Shahriar Mirabbasi

IEEE Trans. Circuits Syst. I Regul. Pap., 2019

Fully Integrated Solutions for High Resolution Terahertz Imaging (Invited).

Ali Mostajeran, Hamidreza Aghasi, S. M. Hossein Naghavi, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2019

A Compact 275 GHz Harmonic VCO with -2.6 dBm Output Power in a 130 nm SiGe Process.

Somayeh Khiyabani, Hamid Khatibi, Ehsan Afshari

Proceedings of the IEEE Custom Integrated Circuits Conference, 2019

2018

A 60-GHz CMOS Down-Conversion Mixer with High Conversion Gain and Low Noise Figure.

Milad Haghi Kashani, Amirahmad Tarkeshdouz, Ehsan Afshari, Shahriar Mirabbasi

Proceedings of the 16th IEEE International New Circuits and Systems Conference, 2018

A 301.7-to-331.8GHz source with entirely on-chip feedback loop for frequency stabilization in 0.μm BiCMOS.

Chen Jiang, Mohammed Aseeri, Andreia Cathelin, Ehsan Afshari

Proceedings of the 2018 IEEE International Solid-State Circuits Conference, 2018

A Novel Approach to Secure Communication in Physical Layer via Coupled Dynamical Systems.

Najme Ebrahimi, Hessam Mahdavifar, Ehsan Afshari

Proceedings of the IEEE Global Communications Conference, 2018

2017

Control Strategy for Three-Phase Grid-Connected PV Inverters Enabling Current Limitation Under Unbalanced Faults.

Ehsan Afshari, Gholamreza Moradi, Ramin Rahimi, Babak Farhangi, Yongheng Yang, Frede Blaabjerg, Shahrokh Farhangi

IEEE Trans. Ind. Electron., 2017

On Probability of Support Recovery for Orthogonal Matching Pursuit Using Mutual Coherence.

Ehsan Miandji, Mohammad Emadi, Jonas Unger, Ehsan Afshari

IEEE Signal Process. Lett., 2017

A 170-GHz Fully Integrated Single-Chip FMCW Imaging Radar with 3-D Imaging Capability.

Ali Mostajeran, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2017

A High-Speed Efficient 220-GHz Spatial-Orthogonal ASK Transmitter in 130-nm SiGe BiCMOS.

Chen Jiang, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2017

A 0.92-THz SiGe Power Radiator Based on a Nonlinear Theory for Harmonic Generation.

Hamidreza Aghasi, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2017

Power-efficient terahertz communication circuits.

Hamidreza Aghasi, Ehsan Afshari

Proceedings of the 4th ACM International Conference on Nanoscale Computing and Communication, 2017

2016

A Fully Integrated 320 GHz Coherent Imaging Transceiver in 130 nm SiGe BiCMOS.

Chen Jiang, Ali Mostajeran, Ruonan Han, Mohammad Emadi, Hani Sherry, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2016

25.5 A 320GHz subharmonic-mixing coherent imager in 0.13µm SiGe BiCMOS.

Chen Jiang, Ali Mostajeran, Ruonan Han, Mohammad Emadi, Hani Sherry, Andreia Cathelin, Ehsan Afshari

Proceedings of the 2016 IEEE International Solid-State Circuits Conference, 2016

A new automatic spark generation system for gasoline engines.

Pedjman Pourmohamadiyan, Arman Hassanpoor, Adel Soheili, Ehsan Afshari, Kamel Hooman

Proceedings of the IEEE International Conference on Industrial Technology, 2016

Design of broadband mm-wave and THz frequency doublers.

Hamidreza Aghasi, Ehsan Afshari

Proceedings of the ESSCIRC Conference 2016: 42^nd European Solid-State Circuits Conference, 2016

2015

A High-Power and Scalable 2-D Phased Array for Terahertz CMOS Integrated Systems.

Yahya M. Tousi, Ehsan Afshari

IEEE J. Solid State Circuits, 2015

A SiGe Terahertz Heterodyne Imaging Transmitter With 3.3 mW Radiated Power and Fully-Integrated Phase-Locked Loop.

Ruonan Han, Chen Jiang, Ali Mostajeran, Mohammad Emadi, Hamidreza Aghasi, Hani Sherry, Andreia Cathelin, Ehsan Afshari

IEEE J. Solid State Circuits, 2015

Smart Detector Cell: A Scalable All-Spin Circuit for Low Power Non-Boolean Pattern Recognition.

Hamidreza Aghasi, Ruohollah Mousavi Iraei, Azad Naeemi, Ehsan Afshari

CoRR, 2015

25.8 A 2.4GHz VCO with FOM of 190dBc/Hz at 10kHz-to-2MHz offset frequencies in 0.13μm CMOS using an ISF manipulation technique.

Ali Mostajeran, Mehrdad Sharif Bakhtiar, Ehsan Afshari

Proceedings of the 2015 IEEE International Solid-State Circuits Conference, 2015

25.5 A 320GHz phase-locked transmitter with 3.3mW radiated power and 22.5dBm EIRP for heterodyne THz imaging systems.

Ruonan Han, Chen Jiang, Ali Mostajeran, Mohammad Emadi, Hamidreza Aghasi, Hani Sherry, Andreia Cathelin, Ehsan Afshari

Proceedings of the 2015 IEEE International Solid-State Circuits Conference, 2015

Session 2 Overview: RF TX/RX design techniques: RF subcommittee.

Ehsan Afshari, Minoru Fujishima

Proceedings of the 2015 IEEE International Solid-State Circuits Conference, 2015

2014

14.6 A scalable THz 2D phased array with +17dBm of EIRP at 338GHz in 65nm bulk CMOS.

Yahya M. Tousi, Ehsan Afshari

Proceedings of the 2014 IEEE International Conference on Solid-State Circuits Conference, 2014

14.8 A 247-to-263.5GHz VCO with 2.6mW peak output power and 1.14% DC-to-RF efficiency in 65nm Bulk CMOS.

Muhammad Adnan, Ehsan Afshari

Proceedings of the 2014 IEEE International Conference on Solid-State Circuits Conference, 2014

2013

Active Terahertz Imaging Using Schottky Diodes in CMOS: Array and 860-GHz Pixel.

Ruonan Han, Yaming Zhang, Youngwan Kim, Dae Yeon Kim, Hisashi Shichijo, Ehsan Afshari, Kenneth K. O

IEEE J. Solid State Circuits, 2013

A CMOS High-Power Broadband 260-GHz Radiator Array for Spectroscopy.

Ruonan Han, Ehsan Afshari

IEEE J. Solid State Circuits, 2013

F4: Scientific imaging.

Makoto Ikeda, Ehsan Afshari, Yusuke Oike, David Ruffieux, Johannes Solhusvik, Albert Theuwissen

Proceedings of the 2013 IEEE International Solid-State Circuits Conference, 2013

A 260GHz broadband source with 1.1mW continuous-wave radiated power and EIRP of 15.7dBm in 65nm CMOS.

Ruonan Han, Ehsan Afshari

Proceedings of the 2013 IEEE International Solid-State Circuits Conference, 2013

2012

A Novel CMOS High-Power Terahertz VCO Based on Coupled Oscillators: Theory and Implementation.

Yahya M. Tousi, Omeed Momeni, Ehsan Afshari

IEEE J. Solid State Circuits, 2012

A Low-Phase-Noise Wide-Tuning-Range Oscillator Based on Resonant Mode Switching.

Guansheng Li, Li Liu, Yiwu Tang, Ehsan Afshari

IEEE J. Solid State Circuits, 2012

A 283-to-296GHz VCO with 0.76mW peak output power in 65nm CMOS.

Yahya M. Tousi, Omeed Momeni, Ehsan Afshari

Proceedings of the 2012 IEEE International Solid-State Circuits Conference, 2012

280GHz and 860GHz image sensors using Schottky-barrier diodes in 0.13μm digital CMOS.

Ruonan Han, Yaming Zhang, Youngwan Kim, Dae Yeon Kim, Hisashi Shichijo, Ehsan Afshari, Kenneth K. O

Proceedings of the 2012 IEEE International Solid-State Circuits Conference, 2012

Session 15 overview: Mm-Wave and THz techniques: RF subcommittee.

Ehsan Afshari, Yorgos Palaskas

Proceedings of the 2012 IEEE International Solid-State Circuits Conference, 2012

A low-phase-noise wide-tuning-range quadrature oscillator in 65nm CMOS.

Guansheng Li, Ehsan Afshari

Proceedings of the IEEE 2012 Custom Integrated Circuits Conference, 2012

2011

Low-Noise Parametric Resonant Amplifier.

Wooram Lee, Ehsan Afshari

IEEE Trans. Circuits Syst. I Regul. Pap., 2011

A Miniature 2 mW 4 bit 1.2 GS/s Delay-Line-Based ADC in 65 nm CMOS.

Yahya M. Tousi, Ehsan Afshari

IEEE J. Solid State Circuits, 2011

High Power Terahertz and Millimeter-Wave Oscillator Design: A Systematic Approach.

Omeed Momeni, Ehsan Afshari

IEEE J. Solid State Circuits, 2011

A Broadband mm-Wave and Terahertz Traveling-Wave Frequency Multiplier on CMOS.

Omeed Momeni, Ehsan Afshari

IEEE J. Solid State Circuits, 2011

A 220-to-275GHz traveling-wave frequency doubler with -6.6dBm Power at 244GHz in 65nm CMOS.

Omeed Momeni, Ehsan Afshari

Proceedings of the IEEE International Solid-State Circuits Conference, 2011

A high gain 107 GHz amplifier in 130 nm CMOS.

Omeed Momeni, Ehsan Afshari

Proceedings of the 2011 IEEE Custom Integrated Circuits Conference, 2011

A low conversion loss passive frequency doubler.

Muhammad Adnan, Ehsan Afshari

Proceedings of the 2011 IEEE Custom Integrated Circuits Conference, 2011

2010

A 10-Gb/s Inductorless Transimpedance Amplifier.

Omeed Momeni, Hossein Hashemi, Ehsan Afshari

IEEE Trans. Circuits Syst. II Express Briefs, 2010

A Low-Phase-Noise Multi-Phase Oscillator Based on Left-Handed LC-Ring.

Guansheng Li, Ehsan Afshari

IEEE J. Solid State Circuits, 2010

Correction to "Distributed Parametric Resonator: A Passive CMOS Frequency Divider" [Sep 10 1834-1844].

Wooram Lee, Ehsan Afshari

IEEE J. Solid State Circuits, 2010

Distributed Parametric Resonator: A Passive CMOS Frequency Divider.

Wooram Lee, Ehsan Afshari

IEEE J. Solid State Circuits, 2010

Bandwidth enhancement of passive filters at mm-wave frequencies using effective negative group index (NGI) structures.

Muhammad Adnan, Ehsan Afshari

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2010), May 30, 2010

2009

Delay-Line-Based Analog-to-Digital Converters.

Guansheng Li, Yahya M. Tousi, Arjang Hassibi, Ehsan Afshari

IEEE Trans. Circuits Syst. II Express Briefs, 2009

A 1mW 4b 1GS/s delay-line based Analog-to-digital Converter.

Yahya M. Tousi, Guansheng Li, Arjang Hassibi, Ehsan Afshari

Proceedings of the International Symposium on Circuits and Systems (ISCAS 2009), 2009

2008

Ultrafast Analog Fourier Transform Using 2-D <i>LC</i> Lattice.

Ehsan Afshari, Harish S. Bhat, Ali Hajimiri

IEEE Trans. Circuits Syst. I Regul. Pap., 2008

2006

Electrical funnel: A broadband signal combining method.

Ehsan Afshari, Harish S. Bhat, Xiaofeng Li, Ali Hajimiri

Proceedings of the 2006 IEEE International Solid State Circuits Conference, 2006

2005

Nonlinear transmission lines for pulse shaping in silicon.

Ehsan Afshari, Ali Hajimiri

IEEE J. Solid State Circuits, 2005

2003

Non-linear transmission lines for pulse shaping in silicon.

Ehsan Afshari, Ali Hajimiri

Proceedings of the IEEE Custom Integrated Circuits Conference, 2003