150 citations · 351 across the 13 of their papers we have counts for
14 papers
Synthesis of Negative Group Delay Using Lossy Coupling Matrix
Ranjan Das, Qingfeng Zhang
In this paper, a systematic synthesis approach is proposed for achieving negative group delay responses using lossy coupling matrix. It is mathematically proved that, for a passive…
Low-Profile Spoof Surface Plasmon Polaritons Traveling-Wave Antenna for Endfire Radiation
Abhishek Kandwal, Qingfeng Zhang, Xiao-Lan Tang +2
This paper proposes a low-profile and highly efficient endfire radiating travelling-wave antenna based on spoof surface plasmon polaritons (SSPPs) transmission line. The aperture i…
Spoof Surface Plasmon Polariton Leaky-Wave Antennas using Periodically Loaded Patches above PEC and AMC Ground Planes
QingLe Zhang, Qingfeng Zhang, Yifan Chen
This paper proposes two spoof surface plasmon polariton (SSPP) leaky-wave antennas using periodically loaded patches above perfect electric conductor (PEC) and artificial magnetic…
Capacitor-Loaded Spoof Surface Plasmon (SSP) for Flexible Dispersion Control and High-Selectivity Filtering
Xiaolan Tang, Qingfeng Zhang, Sanming Hu +3
This letter proposes a new spoof surface plasmon transmission line (SSP-TL) using capacitor loading techniques. This new SSP-TL features flexible and reconfigurable dispersion cont…
Enhanced Bandwidth and Diversity in Real-Time Analog Signal Processing (R-ASP) using Nonuniform C-section Phasers
Sajjad Taravati, Shulabh Gupta, Qingfeng Zhang +1
We show that a continuously nonuniform coupled line C-section phaser, as the limiting case of the step discontinuous coupled-line multisection commensurate and non-commensurate pha…
Single-Step Tunable Group Delay Phaser for Real-Time Spectrum Sniffing
Tongfeng Guo, Qingfeng Zhang, Yifan Chen +2
This paper presents a single-step tunable group delay phaser for spectrum sniffing. This device may be seen as a "time filter", where frequencies are suppressed by time separation…