Design of 3-4GHz Tunable Low Noise LC-QVCO for IEEE 802.11a WLAN Application. - Harikrishnan Ramiah; Tun Zainal Azni Zulkifli (APCCAS, 2006)

A 24mW, 5Gb/s fully balanced differential output trans-impedance amplifier with active inductor and capacitive degeneration techniques in 0.18µm CMOS technology. - Balasubramaniam Shammugasamy; Tun Zainal Azni Zulkifli; Harikrishnan Ramiah (IEICE Electron. Express, 2010)

Design of ultra-low voltage 0.5V CMOS current bleeding mixer. - Gim Heng Tan; Roslina Mohd Sidek; Harikrishnan Ramiah; Wei-Keat Chong (IEICE Electron. Express, 2012)

Variable-Order Ant System for VLSI multiobjective floorplanning. - Chyi-Shiang Hoo; Kanesan Jeevan; Velappa Ganapathy; Harikrishnan Ramiah (Appl. Soft Comput., 2013)

Hierarchical congregated ant system for bottom-up VLSI placements. - Chyi-Shiang Hoo; Hock-Chai Yeo; Kanesan Jeevan; Velappa Ganapathy; Harikrishnan Ramiah; Irfan Anjum Badruddin (Eng. Appl. Artif. Intell., 2013)

A wideband CMOS LNA-mixer for cognitive radio receiver. - Nandini Vitee; Harikrishnan Ramiah; Wei-Keat Chong (APCCAS, 2014)

Enumeration technique in very large-scale integration fixed-outline floorplanning. - Chyi-Shiang Hoo; Kanesan Jeevan; Harikrishnan Ramiah (IET Circuits Devices Syst., 2014)

Ground to Cloud Lightning Flash Currents and Electric Fields: Interaction with Aircraft and Production of Ionosphere Sprites. - Paul Ratnamahilan Polycarp Hoole; Sanmugasundaram Thirukumaran; Harikrishnan Ramiah; Kanesan Jeevan; Samuel Ratnajeevan Herbert Hoole (J. Comput. Eng., 2014)

Design of wideband LTE Power amplifier with Novel Dual stage Linearizer for Mobile Wireless Communication. - U. Eswaran; Harikrishnan Ramiah; Kanesan Jeevan; Ahmed Wasif Reza (J. Circuits Syst. Comput., 2014)

Investigation of a New 3D Intelligent Ray-Tracing Model. - Ahmed Wasif Reza; Kamarul Ariffin Noordin; Md. Jakirul Islam; A. S. M. Zahid Kausar; Harikrishnan Ramiah (Wirel. Pers. Commun., 2014)

Designing a new high gain CMOS amplifier towards a 17.22 MHz MEMS based Si oscillator for a cost effective clock generator IC. - Sukanta Roy; Harikrishnan Ramiah; Ahmed Wasif Reza (IEICE Electron. Express, 2015)

Cost reduction in bottom-up hierarchical-based VLSI floorplanning designs. - Chyi-Shiang Hoo; Kanesan Jeevan; Harikrishnan Ramiah (Int. J. Circuit Theory Appl., 2015)

A Mathematical Algorithm of Locomotive Source Localization Based on Hyperbolic Technique. - Homayun Kabir; Jeevan Kanesan; Ahmed Wasif Reza; Harikrishnan Ramiah (Int. J. Distributed Sens. Networks, 2015)

A low-power fast transient output capacitor-free adaptively biased LDO based on slew rate enhancement for SoC applications. - Chee-Cheow Lim; Nai Shyan Lai; Gim Heng Tan; Harikrishnan Ramiah (Microelectron. J., 2015)

A high-Q spiral inductor with dual-layer patterned floating shield in a class-B VCO achieving a 190.5-dBc/Hz FoM. - Chee-Cheow Lim; Harikrishnan Ramiah; Jun Yin 001; Pui-In Mak; Rui Paulo Martins (ISCAS, 2016)

Data clustering using seed disperser ant algorithm. - Wen Liang Chang; Jeevan Kanesan; Anand Jayant Kulkarni; Harikrishnan Ramiah (Turkish J. Electr. Eng. Comput. Sci., 2017)

Broadband Linear Power Amplifier for Picocell Basestation Application. - Ram Sharma; Jagadheswaran Rajendran; Harikrishnan Ramiah (J. Commun., 2017)

A 50 MHz 10 GHz, 3.3 dB NF, +6 dBm IIP3 resistive feedback common source amplifier for cognitive radio application. - Yong-Yuen Tey; Harikrishnan Ramiah; Norlaili Mohd Noh; Jagadheswaran Rajendran (Microelectron. J., 2017)

Enhanced Quality of Service of Cell-Edge User by Extending Modified Largest Weighted Delay First Algorithm in LTE Networks. - Hasibur Rashid Chayon; Kaharudin Dimyati; Harikrishnan Ramiah; Ahmed Wasif Reza (Symmetry, 2017)

A 73.9%-Efficiency CMOS Rectifier Using a Lower DC Feeding (LDCF) Self-Body-Biasing Technique for Far-Field RF Energy-Harvesting Systems. - Amin Khalili Moghaddam; Joon Huang Chuah; Harikrishnan Ramiah; Jalil Ahmadian; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. I Regul. Pap., 2017)

An inverse-class-F CMOS VCO with intrinsic-high-Q 1st- and 2nd-harmonic resonances for 1/f2-to-1/f3 phase-noise suppression achieving 196.2dBc/Hz FOM. - Chee-Cheow Lim; Jun Yin 001; Pui-In Mak; Harikrishnan Ramiah; Rui Paulo Martins (ISSCC, 2018)

A 700MHz to 2.5GHz Cascode GaAs Power Amplifier for Multi-Band Pico-Cell Achieving 20dB Gain, 40dBm to 45dBm OIP3 and 66% Peak PAE. - Ram Sharma Nitesh; Jagadheswaran Rajendran; Harikrishnan Ramiah; Asrulnizam Bin Abd Manaf (IEEE Access, 2018)

An Inverse-Class-F CMOS Oscillator With Intrinsic-High-Q First Harmonic and Second Harmonic Resonances. - Chee-Cheow Lim; Harikrishnan Ramiah; Jun Yin 001; Pui-In Mak; Rui Paulo Martins (IEEE J. Solid State Circuits, 2018)

A High-Efficiency Ultra-Broadband Mixed-Mode GaN HEMT Power Amplifier. - Ragavan Krishnamoorthy; Narendra Kumar 001; Andrei Grebennikov; Harikrishnan Ramiah (IEEE Trans. Circuits Syst. II Express Briefs, 2018)

Analysis of a Single-Frequency Multi-Channel Ambient RF Energy Harvesting in CMOS Technology. - P. C. Kishore Kumar; Harikrishnan Ramiah; Mohd Yazed Ahmad; Gabriel Chong; Jagadheswaran Rajendran (APCCAS, 2019)

A 0.8 mm2 Sub-GHz GaAs HBT Power Amplifier for 5G Application Achieving 57.5% PAE and 28.5 dBm Maximum Linear Output Power. - Ram Sharma Nitesh; Jagadheswaran Rajendran; Harikrishnan Ramiah; Binboga Siddik Yarman (IEEE Access, 2019)

A 2.2 to 2.9 GHz Complementary Class-C VCO With PMOS Tail-Current Source Feedback Achieving - 120 dBc/Hz Phase Noise at 1 MHz Offset. - Pravinah Nair Shasidharan; Harikrishnan Ramiah; Jagadheswaran Rajendran (IEEE Access, 2019)

A coin-battery-powered LDO-Free 2.4-GHz Bluetooth Low Energy/ZigBee receiver consuming 2 mA. - Zechariah Balan; Harikrishnan Ramiah; Jagadheswaran Rajendran; Nandini Vitee; Pravinah Nair Shasidharan; Jun Yin 001; Pui-In Mak; Rui Paulo Martins (Integr., 2019)

CMOS Cross-Coupled Differential-Drive Rectifier in Subthreshold Operation for Ambient RF Energy Harvesting - Model and Analysis. - Gabriel Chong; Harikrishnan Ramiah; Jun Yin 001; Jagadheswaran Rajendran; Wei Ru Wong; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2019)

A 5.1-to-7.3 mW, 2.4-to-5 GHz Class-C Mode-Switching Single-Ended-Complementary VCO Achieving >190 dBc/Hz FoM. - Chee-Cheow Lim; Harikrishnan Ramiah; Jun Yin 001; Narendra Kumar 001; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2019)

Low-Voltage Capacitive-Based Step-Up DC-DC Converters for RF Energy Harvesting System: A Review. - Kishore Kumar Pakkirisami Churchill; Gabriel Chong; Harikrishnan Ramiah; Mohd Yazed Ahmad; Jagadheswaran Rajendran (IEEE Access, 2020)

Energy efficiency in CMOS power amplifier designs for ultralow power mobile wireless communication systems. - Selvakumar Mariappan; Jagadheswaran Rajendran; Norlaili Mohd Noh; Harikrishnan Ramiah; Asrulnizam Bin Abd Manaf (Turkish J. Electr. Eng. Comput. Sci., 2020)

Broadband RF Power Amplifier with Combination of Large Signal X-Parameter and Real Frequency Techniques. - Ragavan Krishnamoorthy; Narendra Kumar 001; Andrei Grebennikov; Binboga Siddik Yarman; Harikrishnan Ramiah (IEICE Trans. Electron., 2020)

On Wafer Noise Figure De-Embedding Method for CMOS Differential LNA. - Maizan Muhamad; Norhayati Soin; Harikrishnan Ramiah (IEICE Trans. Electron., 2020)

The Evolution of Integrated CMOS Power Amplifiers for Next Generation Mobile Wireless Transceivers. - Selvakumar Mariappan; Jagadheswaran Rajendran; Harikrishnan Ramiah; Norlaili Mohd Noh; Asrulnizam Bin Abd Manaf (J. Circuits Syst. Comput., 2020)

A Low Power High Precision Trim-Less Envelope Detector for Fail-Safe Circuit in LVDS Receiver. - Seng Siong Lee; Lini Lee; Fabian Wai Lee Kung; Ahmed Saad; Harikrishnan Ramiah; Gim Heng Tan (IEEE Trans. Circuits Syst. II Express Briefs, 2020)

A 3.15-mW +16.0-dBm IIP3 22-dB CG Inductively Source Degenerated Balun-LNA Mixer With Integrated Transformer-Based Gate Inductor and IM2 Injection Technique. - Nandini Vitee; Harikrishnan Ramiah; Pui-In Mak; Jun Yin 001; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2020)

A 1-V 4-mW Differential-Folded Mixer With Common-Gate Transconductor Using Multiple Feedback Achieving 18.4-dB Conversion Gain, +12.5-dBm IIP3, and 8.5-dB NF. - Nandini Vitee; Harikrishnan Ramiah; Pui-In Mak; Jun Yin 001; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2020)

Downlink Radio Resource Management Through CoMP and Carrier Aggregation for LTE-Advanced Network. - Hasibur Rashid Chayon; Harikrishnan Ramiah (Wirel. Pers. Commun., 2020)

A Differential RF Front-end CMOS Transformer Matching for Ambient RF Energy Harvesting Systems. - Wen Xun Lian; Harikrishnan Ramiah; Gabriel Chong; P. C. Kishore Kumar (APCCAS, 2021)

A 0.1V Input Energy Harvesting Charge Pump with Dynamic Gate Biasing and Capacitance Scaling. - Jack Kee Yong; Harikrishnan Ramiah; P. C. Kishore Kumar; Gabriel Chong (APCCAS, 2021)

A 5 GHz Current Controlled Oscillator with Active Inductor. - Chakaravarty D. Rajagopal; Norlaili Mohd Noh; Jagadheswaran Rajendran; Harikrishnan Ramiah (RoViSP, 2021)

A Dual-Band Transformer-Coupled Notch Filter Mixer for 2.45-/5.2-GHz WLAN Application. - Yoke Theng Wong; Harikrishnan Ramiah; Nandini Vitee (Circuits Syst. Signal Process., 2021)

A Wide-PCE-Dynamic-Range CMOS Cross-Coupled Differential-Drive Rectifier for Ambient RF Energy Harvesting. - Gabriel Chong; Harikrishnan Ramiah; Jun Yin 001; Jagadheswaran Rajendran; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

An 800 MHz-to-3.3 GHz 20-MHz Channel Bandwidth WPD CMOS Power Amplifier For Multiband Uplink Radio Transceivers. - Selvakumar Mariappan; Jagadheswaran Rajendran; Harikrishnan Ramiah; Pui-In Mak; Jun Yin 001; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

Wide Power Dynamic Range CMOS RF-DC Rectifier for RF Energy Harvesting System: A Review. - Alexander Choo Chia Chun; Harikrishnan Ramiah; Saad Mekhilef (IEEE Access, 2022)

Evaluation and Perspective of Analog Low-Dropout Voltage Regulators: A Review. - Tan Yee Chyan; Harikrishnan Ramiah; Sharifah Wan Muhamad Hatta; Nai Shyan Lai; Chee-Cheow Lim; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2022)

Low Voltage Switched-Capacitive-Based Reconfigurable Charge Pumps for Energy Harvesting Systems: An Overview. - Tian Siang Ho; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Yong Chen 005; Chee-Cheow Lim; Nai Shyan Lai; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2022)

Fully-Integrated Timers for Ultra-Low-Power Internet-of-Things Nodes - Fundamentals and Design Techniques. - Mikki How-Wen Loo; Harikrishnan Ramiah; Ka-Meng Lei; Chee-Cheow Lim; Nai Shyan Lai; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2022)

Self-Sustainable Biomedical Devices Powered by RF Energy: A Review. - Hussein Yahya Alkhalaf; Mohd Yazed Ahmad; Harikrishnan Ramiah (Sensors, 2022)

A Fully-Integrated Ambient RF Energy Harvesting System with 423-μW Output Power. - Kishore Kumar Pakkirisami Churchill; Harikrishnan Ramiah; Gabriel Chong; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (Sensors, 2022)

APCCAS 2021 Guest Editorial. - Yong Chen 005; Harikrishnan Ramiah (IEEE Trans. Circuits Syst. I Regul. Pap., 2022)

A 0.1-V VIN Subthreshold 3-Stage Dual-Branch Charge Pump With 43.4% Peak Power Conversion Efficiency Using Advanced Dynamic Gate-Bias. - Jack Kee Yong; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Gabriel Chong; Saad Mekhilef; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2022)

A Reconfigurable CMOS Rectifier With 14-dB Power Dynamic Range Achieving >36-dB/mm2 FoM for RF-Based Hybrid Energy Harvesting. - Alexander Choo Chia Chun; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Yong Chen 005; Saad Mekhilef; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2022)

A -20-dBm Sensitivity RF Energy-Harvesting Rectifier Front End Using a Transformer IMN. - Wen Xun Lian; Harikrishnan Ramiah; Gabriel Chong; Kishore Kumar Pakkirisami Churchill; Nai Shyan Lai; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2022)

Design and Implementation of Hybrid DC-DC Converter: A Review. - Teck Seong Chang; Harikrishnan Ramiah; Yang Jiang 002; Chee-Cheow Lim; Nai Shyan Lai; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2023)

Design Trends and Perspectives of Digital Low Dropout Voltage Regulators for Low Voltage Mobile Applications: A Review. - Li Fang Lai; Harikrishnan Ramiah; Tan Yee Chyan; Nai Shyan Lai; Chee-Cheow Lim; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2023)

High-Performance Multiband Ambient RF Energy Harvesting Front-End System for Sustainable IoT Applications - A Review. - Yi Chen Lee; Harikrishnan Ramiah; Alexander Choo Chia Chun; Kishore Kumar Pakkirisami Churchill; Nai Shyan Lai; Chee-Cheow Lim; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2023)

A Fully-Integrated CMOS Dual-Band RF Energy Harvesting Front-End Employing Adaptive Frequency Selection. - Wen Xun Lian; Harikrishnan Ramiah; Gabriel Chong; Kishore Kumar Pakkirisami Churchill; Nai Shyan Lai; Saad Mekhilef; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2023)

Location Accuracy Optimization in Bluetooth Low Energy (BLE) 5.1-Based Indoor Positioning System (IPS) - A Machine Learning Approach. - Dasmond Roy Philips; Erfan Salami; Harikrishnan Ramiah; Jeevan Kanesan (IEEE Access, 2023)

A Subthreshold Operation Series-Parallel Charge Pump Incorporating Dynamic Source-Fed Oscillator for Wide-Input-Voltage Energy Harvesting Application. - Jack Kee Yong; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Gabriel Chong; Saad Mekhilef; Nai Shyan Lai; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2023)

A High-Performance Dual-Topology CMOS Rectifier With 19.5-dB Power Dynamic Range for RF-Based Hybrid Energy Harvesting. - Alexander Choo Chia Chun; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Yong Chen 005; Saad Mekhilef; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2023)

A High-PCE Range-Extension CMOS Rectifier Employing Advanced Topology Amalgamation Technique for Ambient RF Energy Harvesting. - Alexander Choo Chia Chun; Yi Chen Lee; Harikrishnan Ramiah; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2023)

A Reconfigurable CMOS Stack Rectifier With 22.8-dB Dynamic Range Achieving 47.91% Peak PCE for IoT/WSN Application. - Kishore Kumar Pakkirisami Churchill; Harikrishnan Ramiah; Alexander Choo Chia Chun; Gabriel Chong; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Very Large Scale Integr. Syst., 2023)

A Fully Integrated CMOS Tri-Band Ambient RF Energy Harvesting System for IoT Devices. - Jack Kee Yong; Wen Xun Lian; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Gabriel Chong; Nai Shyan Lai; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. I Regul. Pap., 2023)

Flexible Meta-Patch Rectenna Array for Energizing Low-Power Wearable Medical Sensors. - Hussein Yahya Alkhalaf; Mohd Yazed Ahmad; Harikrishnan Ramiah; A. K. M. Zakir Hossain; S. M. Kayser Azam; Aung Thiha (IEEE Access, 2024)

A Fast Startup 38.4-MHz Crystal Oscillator Achieving 99-nJ Startup Energy With Adaptive Chirping. - Abdolraouf Rahmani; Harikrishnan Ramiah; Ka-Meng Lei; Chee-Cheow Lim; Nai Shyan Lai; Pui-In Mak; Rui Paulo Martins (IEEE Access, 2024)

Application of Artificial Intelligence in Particle and Impurity Detection and Removal: A Survey. - Nur Aini Syakimah Ahmad Shuyuti; Erfan Salami; Mahidzal Bin Dahari; Hamzah Arof; Harikrishnan Ramiah (IEEE Access, 2024)

Extended Power Dynamic Range and Enhanced Power Conversion Efficiency of a Switched-Capacitor DC-DC Converter: A Tutorial. - Tian Siang Ho; Harikrishnan Ramiah; Kishore Kumar Pakkirisami Churchill; Yong Chen 005; Pui-In Mak; Rui Paulo Martins (IEEE Trans. Circuits Syst. II Express Briefs, 2024)

Improved feature extraction network in lightweight YOLOv7 model for real-time vehicle detection on low-cost hardware. - Johan Lela Andika; Anis Salwa Mohd Khairuddin; Harikrishnan Ramiah; Jeevan Kanesan (J. Real Time Image Process., 2024)

Bidirectional Wireless Charging System for Electric Vehicles: A Review of Power Converters and Control Techniques in V2G Application. - Subia Meraj; Saad Mekhilef; Marizan Mubin; Harikrishnan Ramiah; Mehdi Seyedmahmoudian; Alex Stojcevski (IEEE Access, 2025)

A high-PCE amalgamate charge pump topology with extended input voltage dynamic range for energy harvesting systems. - Jack Kee Yong; Qi Huan Zhou; Tian Siang Ho; Harikrishnan Ramiah (Int. J. Circuit Theory Appl., 2025)

A Capacitorless Flipped-Voltage-Follower-Based Low-Dropout Regulator Incorporating Adaptive-Compensation Buffer. - Tan Yee Chyan; Harikrishnan Ramiah; Sharifah Wan Muhamad Hatta; Chee-Cheow Lim; Rui Paulo Martins; Pui-In Mak; Yong Chen 005 (IEEE Trans. Very Large Scale Integr. Syst., 2025)

A Switch-as-Resistor Self-Adaptive Gate-Biasing Technique for Optimized Forward and Reverse Conduction in a CMOS Rectifier. - Yi Chen Lee; Harikrishnan Ramiah; Tian Siang Ho; Fu Qi Chua; Wen Xun Lian; Kishore Kumar Pakkirisami Churchill; Yong Chen 005 (IEEE Trans. Circuits Syst. II Express Briefs, 2025)