150 citations · 351 across the 13 of their papers we have counts for
7 papers · 1 filter
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…
Coupling Matrix Synthesis of Nonreciprocal Lossless Two-Port Networks using Gyrators and Inverters
Qingfeng Zhang, Toshiro Kodera, Shuai Ding +1
A coupling matrix technique is presented for the synthesis of nonreciprocal lossless two-port networks. This technique introduces complex inverters to build the nonreciprocal trans…
Planar Reflective Phaser and Synthesis for Radio Analog Signal Processing (R-ASP)
Lianfeng Zou, Qingfeng Zhang, Christophe Caloz
A planar reflective phaser based on an open-ended edge-coupled-line structure is proposed. This phaser is the first reported phaser that combines the benefits of high resolution, i…
Enhanced-SNR Impulse Radio Transceiver based on Phasers
Babak Nikfal, Qingfeng Zhang, Christophe Caloz
The concept of SNR enhancement in impulse radio transceivers based on phasers of opposite chirping slopes is introduced. It is shown that signal to-noise radio (SNR) enhancements b…
Generalized Coupled-line All-Pass Phasers
Shulabh Gupta, Qingfeng Zhang, Lianfeng Zou +2
Generalized coupled-line all-pass phasers, based on transversally-cascaded (TC), longitudinally-cascaded (LC) and hybrid-cascaded (HC) coupled transmission line sections, are prese…
Analog Signal Processing
Christophe Caloz, Shulabh Gupta, Qingfeng Zhang +1
Analog signal processing (ASP) is presented as a systematic approach to address future challenges in high speed and high frequency microwave applications. The general concept of AS…