Design of Variable Fractional Delay Filter Using DFT Interpolation. - Dharmendra Kumar Upadhyay; Vishal Chaudhary (ARTCom, 2009)

Design of optimal 2-D FIR differentiators with quadrantally symmetric properties using the L1-method. - Apoorva Aggarwal; Manjeet Kumar; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (ICSPCS, 2016)

Optimal Design of 2D FIR Filters with Quadrantally Symmetric Properties Using Fractional Derivative Constraints. - Apoorva Aggarwal; Manjeet Kumar; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (Circuits Syst. Signal Process., 2016)

Optimal design of L 1-norm based IIR digital differentiators and integrators using the bat algorithm. - Apoorva Aggarwal; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (IET Signal Process., 2017)

Optimal design of 2-D FIR digital differentiator using L1-norm based cuckoo-search algorithm. - Apoorva Aggarwal; Manjeet Kumar; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (Multidimens. Syst. Signal Process., 2017)

Real-time simulation of H-P noisy Schrödinger equation and Belavkin filter. - Naman Garg; Harish Parthasarathy; Dharmendra Kumar Upadhyay (Quantum Inf. Process., 2017)

Belavkin filter for mixture of quadrature and photon counting process with some control techniques. - Naman Garg; Harish Parthasarathy; Dharmendra Kumar Upadhyay (Quantum Inf. Process., 2018)

A Novel Approach for the Design of Optimum IIR Differentiators Using Fractional Interpolation. - Om Prakash Goswami; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (Circuits Syst. Signal Process., 2020)

Highly-Accurate Fractional-Order Microwave Differentiators for Band-Specific UWB Applications. - Mridul Gupta; Dharmendra Kumar Upadhyay (Wirel. Pers. Commun., 2020)

Compact Dual-Band Circularly-Polarized Cross-Dipole Antenna for Portable RFID Readers. - Chandni Bajaj; Dharmendra Kumar Upadhyay; Sachin Kumar 003; Binod Kumar Kanaujia (RFID-TA, 2021)

Compact Circularly Polarized 2.45/5.8-GHz Antenna for RFID Readers. - Chandni Bajaj; Dharmendra Kumar Upadhyay; Sachin Kumar 003; Binod Kumar Kanaujia (RFID-TA, 2021)

Approximation of Fractional-Order Butterworth Filter Using Pole-Placement in W-Plane. - Shalabh K. Mishra; Dharmendra Kumar Upadhyay; Maneesha Gupta (IEEE Trans. Circuits Syst. II Express Briefs, 2021)

L1-Norm-Based Optimal Design of Digital Differentiator Using Multiverse Optimization. - Om Prakash Goswami; Tarun Kumar Rawat; Dharmendra Kumar Upadhyay (Circuits Syst. Signal Process., 2022)

A Dual-Band Circularly Polarized Hexagonal Ring Antenna for Handheld RFID Readers. - Chandni Bajaj; Dharmendra Kumar Upadhyay; Sachin Kumar 003; Binod Kumar Kanaujia (Wirel. Pers. Commun., 2022)

Compact 2.45 GHz RFID Reader Antenna for IoT Networks. - Khushi Sahay; Sonu Sharma; Aryan Gupta; Ansh Makker; Chandni Bajaj; Dharmendra Kumar Upadhyay (EWDTS, 2024)

Modern RFID Reader Antennas: A Review of the Design, State-of-the-Art, and Research Challenges. - Chandni Bajaj; Sachin Kumar 003; Dharmendra Kumar Upadhyay; Binod Kumar Kanaujia; Dhiraj Gupta; Tanweer Ali (IEEE Access, 2025)