Ehsan Afshari

Publication Activity (10 Years)

Years Active: 2003-2024
Publications (10 Years): 40

Top Topics

Imaging Systems

Energy Efficiency

Top Venues

IEEE J. Solid State Circuits

IEEE Trans. Circuits Syst. I Regul. Pap.

Publications

Lili Chen, Morteza Tavakoli Taba, Zainulabideen J. Khalifa, Andreia Cathelin, Ehsan Afshari
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. IEEE J. Solid State Circuits 59 (5) (2024)
Lili Chen, Andreia Cathelin, Ehsan Afshari
A High-Efficiency High-Power 170-176-GHz Frequency Stabilized Quadrature Radiator. IEEE J. Solid State Circuits 59 (1) (2024)
Farzad Khoeini, Bardia Pezeshki, Emad Afifi, Alex Tselikov, Robert F. Kalman, Bahareh Hadidian, Ehsan Afshari
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. IEEE J. Solid State Circuits 59 (5) (2024)
S. M. Hossein Naghavi, Morteza Tavakoli Taba, Amirata Tabatabavakili, Ali Mostajeran, Mohammed Aseeri, Andreia Cathelin, Ehsan Afshari
24.4 Sub-THz Ruler: Spectral Bistability in a 235GHz Self-Injection-Locked Oscillator for Agile and Unambiguous Ranging. ISSCC (2024)
Morteza Fayazi, Morteza Tavakoli Taba, Ehsan Afshari, Ronald G. Dreslinski
AnGeL: Fully-Automated Analog Circuit Generator Using a Neural Network Assisted Semi-Supervised Learning Approach. IEEE Trans. Circuits Syst. I Regul. Pap. 70 (11) (2023)
Morteza Tavakoli Taba, S. M. Hossein Naghavi, Morteza Fayazi, Ali Sadeghi, Andreia Cathelin, Ehsan Afshari
A Compact CMOS 363 GHz Autodyne FMCW Radar with 57 GHz Bandwidth for Dental Imaging. CICC (2023)
Morteza Fayazi, Morteza Tavakoli Taba, Amirata Tabatabavakili, Ehsan Afshari, Ronald G. Dreslinski
FuNToM: Functional Modeling of RF Circuits Using a Neural Network Assisted Two-Port Analysis Method. CoRR (2023)
Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Kamal Sarabandi, Ehsan Afshari
A 194-238GHz Fully On-Chip Self-Referenced Frequency Stabilized Radiator for High Range Resolution Imaging. CICC (2023)
Morteza Tavakoli Taba, S. M. Hossein Naghavi, Sara Shoouri, Andreia Cathelin, Ehsan Afshari
A 53-62 GHz Two-channel Differential 6-bit Active Phase Shifter in 55-nm SiGe Technology. ESSCIRC (2023)
Lili Chen, Morteza Taba, Andreia Cathelin, Ehsan Afshari
A Low-Power 20Gb/s 196GHz BPSK Wireless Transmitter with Energy Efficiency FoM of 0.15pJ/bit/cm. CICC (2023)
Morteza Fayazi, Morteza Tavakoli Taba, Amirata Tabatabavakili, Ehsan Afshari, Ronald G. Dreslinski
FuNToM: Functional Modeling of RF Circuits Using a Neural Network Assisted Two-Port Analysis Method. ICCAD (2023)
Morteza Tavakoli Taba, S. M. Hossein Naghavi, Ehsan Afshari
A Review on the State-of-the-Art THz FMCW Radars Implemented on Silicon: Invited. ESSCIRC (2022)
Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Ehsan Afshari
A 220-GHz Energy-Efficient High-Data-Rate Wireless ASK Transmitter Array. IEEE J. Solid State Circuits 57 (6) (2022)
Farzad Khoeini, Bahareh Hadidian, Keshu Zhang, Ehsan Afshari
A Transimpedance-to-Noise Optimized Analog Front-End With High PSRR for Pulsed ToF Lidar Receivers. IEEE Trans. Circuits Syst. I Regul. Pap. 68 (9) (2021)
Morteza Fayazi, Zachary Colter, Ehsan Afshari, Ronald G. Dreslinski
Applications of Artificial Intelligence on the Modeling and Optimization for Analog and Mixed-Signal Circuits: A Review. IEEE Trans. Circuits Syst. I Regul. Pap. 68 (6) (2021)
Bahareh Hadidian, Farzad Khoeini, S. M. Hossein Naghavi, Andreia Cathelin, Ehsan Afshari
An Energy Efficient Fully Integrated 20Gbps OOK Wireless Transmitter at 220GHz. CICC (2021)
S. M. Hossein Naghavi, Saghar Seyedabbaszadehesfahlani, Farzad Khoeini, Andreia Cathelin, Ehsan Afshari
A 250GHz Autodyne FMCW Radar in 55nm BiCMOS with Micrometer Range Resolution. ISSCC (2021)
Somayeh Khiyabani, Hamid Khatibi, Ehsan Afshari
A Compact 275 GHz Harmonic VCO with -2.6 dBm Output Power in a 130 nm SiGe Process. CICC (2019)
Ali Mostajeran, Hamidreza Aghasi, S. M. Hossein Naghavi, Ehsan Afshari
Fully Integrated Solutions for High Resolution Terahertz Imaging (Invited). CICC (2019)
Milad Haghi Kashani, Amirahmad Tarkeshdouz, Ehsan Afshari, Shahriar Mirabbasi
A 53-67 GHz Low-Noise Mixer-First Receiver Front-End in 65-nm CMOS. IEEE Trans. Circuits Syst. I Regul. Pap. (6) (2019)
Vahnood Pourahmad, Farzad Khoeini, Ehsan Afshari
A System of Two Coupled Oscillators With a Continuously Controllable Phase Shift. IEEE Trans. Circuits Syst. I Regul. Pap. (4) (2019)
Chen Jiang, Mohammed Aseeri, Andreia Cathelin, Ehsan Afshari
A 301.7-to-331.8GHz source with entirely on-chip feedback loop for frequency stabilization in 0.μm BiCMOS. ISSCC (2018)
Najme Ebrahimi, Hessam Mahdavifar, Ehsan Afshari
A Novel Approach to Secure Communication in Physical Layer via Coupled Dynamical Systems. GLOBECOM (2018)
Milad Haghi Kashani, Amirahmad Tarkeshdouz, Ehsan Afshari, Shahriar Mirabbasi
A 60-GHz CMOS Down-Conversion Mixer with High Conversion Gain and Low Noise Figure. NEWCAS (2018)
Ehsan Miandji, Mohammad Emadi, Jonas Unger, Ehsan Afshari
On Probability of Support Recovery for Orthogonal Matching Pursuit Using Mutual Coherence. IEEE Signal Process. Lett. 24 (11) (2017)
Ali Mostajeran, Andreia Cathelin, Ehsan Afshari
A 170-GHz Fully Integrated Single-Chip FMCW Imaging Radar with 3-D Imaging Capability. IEEE J. Solid State Circuits 52 (10) (2017)
Hamidreza Aghasi, Ehsan Afshari
Power-efficient terahertz communication circuits. NANOCOM (2017)
Ehsan Afshari, Gholamreza Moradi, Ramin Rahimi, Babak Farhangi, Yongheng Yang, Frede Blaabjerg, Shahrokh Farhangi
Control Strategy for Three-Phase Grid-Connected PV Inverters Enabling Current Limitation Under Unbalanced Faults. IEEE Trans. Ind. Electron. 64 (11) (2017)
Hamidreza Aghasi, Andreia Cathelin, Ehsan Afshari
A 0.92-THz SiGe Power Radiator Based on a Nonlinear Theory for Harmonic Generation. IEEE J. Solid State Circuits 52 (2) (2017)
Chen Jiang, Andreia Cathelin, Ehsan Afshari
A High-Speed Efficient 220-GHz Spatial-Orthogonal ASK Transmitter in 130-nm SiGe BiCMOS. IEEE J. Solid State Circuits 52 (9) (2017)
Chen Jiang, Ali Mostajeran, Ruonan Han, Mohammad Emadi, Hani Sherry, Andreia Cathelin, Ehsan Afshari
A Fully Integrated 320 GHz Coherent Imaging Transceiver in 130 nm SiGe BiCMOS. IEEE J. Solid State Circuits 51 (11) (2016)
Pedjman Pourmohamadiyan, Arman Hassanpoor, Adel Soheili, Ehsan Afshari, Kamel Hooman
A new automatic spark generation system for gasoline engines. ICIT (2016)
Chen Jiang, Ali Mostajeran, Ruonan Han, Mohammad Emadi, Hani Sherry, Andreia Cathelin, Ehsan Afshari
25.5 A 320GHz subharmonic-mixing coherent imager in 0.13µm SiGe BiCMOS. ISSCC (2016)
Hamidreza Aghasi, Ehsan Afshari
Design of broadband mm-wave and THz frequency doublers. ESSCIRC (2016)
Yahya M. Tousi, Ehsan Afshari
A High-Power and Scalable 2-D Phased Array for Terahertz CMOS Integrated Systems. IEEE J. Solid State Circuits 50 (2) (2015)
Ruonan Han, Chen Jiang, Ali Mostajeran, Mohammad Emadi, Hamidreza Aghasi, Hani Sherry, Andreia Cathelin, Ehsan Afshari
A SiGe Terahertz Heterodyne Imaging Transmitter With 3.3 mW Radiated Power and Fully-Integrated Phase-Locked Loop. IEEE J. Solid State Circuits 50 (12) (2015)
Hamidreza Aghasi, Ruohollah Mousavi Iraei, Azad Naeemi, Ehsan Afshari
Smart Detector Cell: A Scalable All-Spin Circuit for Low Power Non-Boolean Pattern Recognition. CoRR (2015)
Ali Mostajeran, Mehrdad Sharif Bakhtiar, Ehsan Afshari
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. ISSCC (2015)
Ruonan Han, Chen Jiang, Ali Mostajeran, Mohammad Emadi, Hamidreza Aghasi, Hani Sherry, Andreia Cathelin, Ehsan Afshari
25.5 A 320GHz phase-locked transmitter with 3.3mW radiated power and 22.5dBm EIRP for heterodyne THz imaging systems. ISSCC (2015)
Ehsan Afshari, Minoru Fujishima
Session 2 Overview: RF TX/RX design techniques: RF subcommittee. ISSCC (2015)
Yahya M. Tousi, Ehsan Afshari
14.6 A scalable THz 2D phased array with +17dBm of EIRP at 338GHz in 65nm bulk CMOS. ISSCC (2014)
Muhammad Adnan, Ehsan Afshari
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. ISSCC (2014)
Makoto Ikeda, Ehsan Afshari, Yusuke Oike, David Ruffieux, Johannes Solhusvik, Albert Theuwissen
F4: Scientific imaging. ISSCC (2013)
Ruonan Han, Ehsan Afshari
A CMOS High-Power Broadband 260-GHz Radiator Array for Spectroscopy. IEEE J. Solid State Circuits 48 (12) (2013)
Ruonan Han, Ehsan Afshari
A 260GHz broadband source with 1.1mW continuous-wave radiated power and EIRP of 15.7dBm in 65nm CMOS. ISSCC (2013)
Ruonan Han, Yaming Zhang, Youngwan Kim, Dae Yeon Kim, Hisashi Shichijo, Ehsan Afshari, Kenneth K. O
Active Terahertz Imaging Using Schottky Diodes in CMOS: Array and 860-GHz Pixel. IEEE J. Solid State Circuits 48 (10) (2013)
Yahya M. Tousi, Omeed Momeni, Ehsan Afshari
A 283-to-296GHz VCO with 0.76mW peak output power in 65nm CMOS. ISSCC (2012)
Guansheng Li, Li Liu, Yiwu Tang, Ehsan Afshari
A Low-Phase-Noise Wide-Tuning-Range Oscillator Based on Resonant Mode Switching. IEEE J. Solid State Circuits 47 (6) (2012)
Ehsan Afshari, Yorgos Palaskas
Session 15 overview: Mm-Wave and THz techniques: RF subcommittee. ISSCC (2012)
Ruonan Han, Yaming Zhang, Youngwan Kim, Dae Yeon Kim, Hisashi Shichijo, Ehsan Afshari, Kenneth K. O
280GHz and 860GHz image sensors using Schottky-barrier diodes in 0.13μm digital CMOS. ISSCC (2012)
Yahya M. Tousi, Omeed Momeni, Ehsan Afshari
A Novel CMOS High-Power Terahertz VCO Based on Coupled Oscillators: Theory and Implementation. IEEE J. Solid State Circuits 47 (12) (2012)
Guansheng Li, Ehsan Afshari
A low-phase-noise wide-tuning-range quadrature oscillator in 65nm CMOS. CICC (2012)
Wooram Lee, Ehsan Afshari
Low-Noise Parametric Resonant Amplifier. IEEE Trans. Circuits Syst. I Regul. Pap. (3) (2011)
Omeed Momeni, Ehsan Afshari
A Broadband mm-Wave and Terahertz Traveling-Wave Frequency Multiplier on CMOS. IEEE J. Solid State Circuits 46 (12) (2011)
Yahya M. Tousi, Ehsan Afshari
A Miniature 2 mW 4 bit 1.2 GS/s Delay-Line-Based ADC in 65 nm CMOS. IEEE J. Solid State Circuits 46 (10) (2011)
Muhammad Adnan, Ehsan Afshari
A low conversion loss passive frequency doubler. CICC (2011)
Omeed Momeni, Ehsan Afshari
A high gain 107 GHz amplifier in 130 nm CMOS. CICC (2011)
Omeed Momeni, Ehsan Afshari
High Power Terahertz and Millimeter-Wave Oscillator Design: A Systematic Approach. IEEE J. Solid State Circuits 46 (3) (2011)
Omeed Momeni, Ehsan Afshari
A 220-to-275GHz traveling-wave frequency doubler with -6.6dBm Power at 244GHz in 65nm CMOS. ISSCC (2011)
Guansheng Li, Ehsan Afshari
A Low-Phase-Noise Multi-Phase Oscillator Based on Left-Handed LC-Ring. IEEE J. Solid State Circuits 45 (9) (2010)
Wooram Lee, Ehsan Afshari
Distributed Parametric Resonator: A Passive CMOS Frequency Divider. IEEE J. Solid State Circuits 45 (9) (2010)
Omeed Momeni, Hossein Hashemi, Ehsan Afshari
A 10-Gb/s Inductorless Transimpedance Amplifier. IEEE Trans. Circuits Syst. II Express Briefs (12) (2010)
Muhammad Adnan, Ehsan Afshari
Bandwidth enhancement of passive filters at mm-wave frequencies using effective negative group index (NGI) structures. ISCAS (2010)
Wooram Lee, Ehsan Afshari
Correction to "Distributed Parametric Resonator: A Passive CMOS Frequency Divider" [Sep 10 1834-1844]. IEEE J. Solid State Circuits 45 (10) (2010)
Guansheng Li, Yahya M. Tousi, Arjang Hassibi, Ehsan Afshari
Delay-Line-Based Analog-to-Digital Converters. IEEE Trans. Circuits Syst. II Express Briefs (6) (2009)
Yahya M. Tousi, Guansheng Li, Arjang Hassibi, Ehsan Afshari
A 1mW 4b 1GS/s delay-line based Analog-to-digital Converter. ISCAS (2009)
Ehsan Afshari, Harish S. Bhat, Ali Hajimiri
Lattice. IEEE Trans. Circuits Syst. I Regul. Pap. (8) (2008)
Ehsan Afshari, Harish S. Bhat, Xiaofeng Li, Ali Hajimiri
Electrical funnel: A broadband signal combining method. ISSCC (2006)
Ehsan Afshari, Ali Hajimiri
Nonlinear transmission lines for pulse shaping in silicon. IEEE J. Solid State Circuits 40 (3) (2005)
Ehsan Afshari, Ali Hajimiri
Non-linear transmission lines for pulse shaping in silicon. CICC (2003)