World's Best Scientists 2026 revealed!

D-Index & Metrics

Electronics and Electrical Engineering

D-Index
71
Citations
26052
World Ranking
838
National Ranking
360

Research.com Recognitions

  • 2015 - Fellow, National Academy of Inventors

Overview

Ali Hajimiri is affiliated with the California Institute of Technology in the United States. Their research primarily centers on engineering with a strong emphasis on electrical and electronic engineering and aerospace engineering.

Their work spans several subfields including artificial intelligence, atomic and molecular physics and optics, and biomedical engineering. The central themes of their research include photonic and optical devices, energy harvesting in wireless networks, and antenna design and analysis. Additional focus areas include antenna design and optimization, advanced photonic communication systems, advanced antenna and metasurface technologies, and semiconductor lasers and optical devices.

Recent notable papers authored or co-authored by Ali Hajimiri include:

  • "Dynamic Focusing of Large Arrays for Wireless Power Transfer and Beyond," 2020, IEEE Journal of Solid-State Circuits
  • "Flexible active antenna arrays," 2022, npj Flexible Electronics
  • "A Framework for Array Shape Reconstruction Through Mutual Coupling," 2021, IEEE Transactions on Microwave Theory and Techniques
  • "A Lightweight Space-based Solar Power Generation and Transmission Satellite," 2022, arXiv (Cornell University)
  • "Discretization of annular-ring diffraction pattern for large-scale photonics beamforming," 2022, Photonics Research

Ali Hajimiri collaborates frequently with several researchers. Frequent co-authors include Austin Fikes, Aroutin Khachaturian, Oren S. Mizrahi, Reza Fatemi, and Matan Gal-Katziri.

Their publications appear regularly in venues such as arXiv (Cornell University), IEEE Journal of Solid-State Circuits, IEEE Transactions on Microwave Theory and Techniques, Photonics Research, and IEEE Journal of Microwaves.

In recognition of their contributions, Ali Hajimiri was awarded the title of Fellow at the National Academy of Inventors in 2015.

Best Publications

  • A general theory of phase noise in electrical oscillators

    A. Hajimiri;T.H. Lee

  • Jitter and phase noise in ring oscillators

    A. Hajimiri;S. Limotyrakis;T.H. Lee

  • Design issues in CMOS differential LC oscillators

    A. Hajimiri;T.H. Lee

  • Oscillator phase noise: a tutorial

    T.H. Lee;A. Hajimiri

  • Concepts and methods in optimization of integrated LC VCOs

    D. Ham;A. Hajimiri

  • The Design of Low Noise Oscillators

    Ali Hajimiri;Thomas H. Lee

  • Concurrent multiband low-noise amplifiers-theory, design, and applications

    H. Hashemi;A. Hajimiri

  • A fully integrated 24-GHz eight-element phased-array receiver in silicon

    Xiang Guan;Hossein Hashemi;Ali Hajimiri

  • Distributed active transformer-a new power-combining and impedance-transformation technique

    I. Aoki;S.D. Kee;D.B. Rutledge;A. Hajimiri

  • A 77-GHz phased-array transceiver with on-chip antennas in silicon : Receiver and antennas

    Aydin Babakhani;Xiang Guan;Abbas Komijani;Arun Natarajan

  • Fully integrated CMOS power amplifier design using the distributed active-transformer architecture

    I. Aoki;S.D. Kee;D.B. Rutledge;A. Hajimiri

  • A 77-GHz Phased-Array Transceiver With On-Chip Antennas in Silicon: Transmitter and Local LO-Path Phase Shifting

    A. Natarajan;A. Komijani;Xiang Guan;A. Babakhani

  • A noise-shifting differential Colpitts VCO

    R. Aparicio;A. Hajimiri

  • A self-sustaining ultrahigh-frequency nanoelectromechanical oscillator

    X. L. Feng;C. J. White;A. Hajimiri;M. L. Roukes

  • A Fully Integrated Quad-Band GSM/GPRS CMOS Power Amplifier

    I. Aoki;S. Kee;R. Magoon;R. Aparicio

  • The class-E/F family of ZVS switching amplifiers

    S.D. Kee;I. Aoki;A. Hajimiri;D. Rutledge

  • A 24-GHz CMOS front-end

    Xiang Guan;A. Hajimiri

  • Fractal capacitors

    H. Samavati;A. Hajimiri;A.R. Shahani;G.N. Nasserbakht

  • Capacity limits and matching properties of integrated capacitors

    R. Aparicio;A. Hajimiri

  • A 0.28 THz Power-Generation and Beam-Steering Array in CMOS Based on Distributed Active Radiators

    K. Sengupta;A. Hajimiri

  • Bandwidth enhancement for transimpedance amplifiers

    B. Analui;A. Hajimiri

Frequent Co-Authors

Hua Wang
Hua Wang Georgia Institute of Technology
Arun Natarajan
Arun Natarajan Oregon State University
Hossein Hashemi
Hossein Hashemi University of Southern California
James F. Buckwalter
James F. Buckwalter University of California, Santa Barbara
Thomas H. Lee
Thomas H. Lee Stanford University
David B. Rutledge
David B. Rutledge California Institute of Technology
Ehsan Afshari
Ehsan Afshari University of Michigan–Ann Arbor
Donhee Ham
Donhee Ham Harvard University
Harry A. Atwater
Harry A. Atwater California Institute of Technology
Kari Halonen
Kari Halonen Aalto University

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