Vishnu Unnikrishnan
Visitor IT rights
Visitor IT rights
T411 Dept. Electronics and Nanoeng
Full researcher profile
https://research.aalto.fi/...
Publications
High-Precision Time-to-Digital Conversion for Calibration of Outphasing Radio Transmitters
Dhanashree Boopathy, Tze Hin Cheung, Andrei Spelman, Agnimesh Ghosh, Vesa Lampu, Lauri Anttila, Kari Stadius, Marko Kosunen, Jussi Ryynanen, Vishnu Unnikrishnan
2023
21st IEEE Interregional NEWCAS Conference, NEWCAS 2023 - Proceedings
Multilevel Outphasing with Over-the-Air Combining in Large Antenna Arrays
Vesa Lampu, Guixian Xu, Alberto Brihuega, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynanen, Christian Fager, Mikko Valkama, Lauri Anttila
2023
IEEE Transactions on Communications
Digital Polar Transmitters for Massive MIMO: Sum-Rate and Power Efficiency Analysis
Guixian Xu, Vesa Lampu, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynanen, Mikko Valkama, Lauri Anttila
2023
IEEE Transactions on Wireless Communications
Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters
Agnimesh Ghosh, Andrei Spelman, Tze Hin Cheung, Dhanashree Boopathy, Vishnu Unnikrishnan, Vesa Lampu, Guixian Xu, Lauri Anttila, Kari Stadius, Marko Kosunen, Jussi Ryynänen
2022
2022 IEEE Nordic Circuits and Systems Conference, NORCAS 2022 - Proceedings
Design of Cyclic-Coupled Ring Oscillators with Guaranteed Maximal Phase Resolution
Okko Jarvinen, Vishnu Unnikrishnan, Ilia Kempi, Kari Stadius, Marko Kosunen, Jussi Ryynanen
2022
IEEE International Symposium on Circuits and Systems, ISCAS 2022
Energy-Efficient Cyclic-Coupled Ring Oscillator With Delay-Based Injection Locking
Okko Jarvinen, Vishnu Unnikrishnan, Ilia Kempi, Santeri Porrasmaa, Kari Stadius, Marko Kosunen, Jussi Ryynanen
2022
IEEE Transactions on Circuits and Systems II: Express Briefs
Fully Digital On-Chip Wideband Background Calibration for Channel Mismatches in Time-Interleaved Time-Based ADCs
Okko Jarvinen, Ilia Kempi, Vishnu Unnikrishnan, Kari Stadius, Marko Kosunen, Jussi Ryynänen
2022
IEEE Solid-State Circuits Letters
A 0.9-Nyquist-Band Digital Timing Mismatch Correction for Time-Interleaved ADCs Achieving Delay Tuning Range of 0.12-Sample-Period
Ilia Kempi, Okko Jarvinen, Marko Kosunen, Vishnu Unnikrishnan, Kari Stadius, Jussi Ryynanen
2022
IEEE International Symposium on Circuits and Systems, ISCAS 2022
A 0.8-6 GHz True-Time-Delay Beam-Nulling Receiver Front-End
K. Spoof, M. Tenhunen, V. Unnikrishnan, K. Stadius, M. Kosunen, J. Ryynänen
2022
ICECS 2022 - 29th IEEE International Conference on Electronics, Circuits and Systems, Proceedings
A RECEIVER SYSTEM CONFIGURED TO ALTERNATE BETWEEN DIFFERENT BEAMFORMING TYPES
Kalle Spoof, Miikka Tenhunen, Kari Stadius, Vishnu Unnikrishnan, Marko Kosunen, Jussi Ryynänen
2022