Tianning Zheng

Synthesis of coupled-resonator bandpass filters via Hamiltonian-based model

Tengyu Liang, Tianning Zheng

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A Generalized Hamiltonian Framework for High-Performance Microwave Bandstop Filters: From Theory to Experimental Validation

Qi Guo, Tengyu Liang, Youzhi Wang, Bowei Xie et autres

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Topological Photonic Crystal in Microwave Region Based on Coupled Superconducting Resonators

Tianning Zheng, Xiaoyang Chang, J. Q. Huang, Yilun Liu et autres

Topological photonics has been widely investigated due to its profound physical significance and great number of potential applications. Microwaves have long wavelengths, so it is relatively easy to manufacture large-sized microwave photonic crystals, enabling researchers to observe and measure phenomena such as …

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Three-pathway electromagnetically induced transparency and absorption based on coupled superconducting resonators

Tianning Zheng, Pengqi Wang, Bin Wei, Boyu Lu et autres

Electromagnetically induced transparency (EIT) and electromagnetically induced absorption (EIA) have many applications, especially for achieving slow light and fast light. EIT and EIA have been widely observed in both quantum and classical systems where two transition pathways could interference destructively or constructively. …

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Electromagnetically induced transparency in indirectly coupled high‐temperature superconducting resonators

Tianning Zheng, J. Q. Huang, Pengqi Wang, Linan Jiang et autres

Abstract In this letter, electromagnetically induced transparency (EIT) is implemented in the microwave region with an experimental system composed of two indirectly coupled high‐temperature superconducting resonators. The transition condition between EIT and Autler–Townes splitting is analyzed, giving a physical explanation of this …

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Very large group delay in VHF band using coupled high temperature superconducting resonators

Tianning Zheng, Bin Wei, Fuchuan Lei, Bisong Cao

Storing a very high frequency (VHF) band (30–300 MHz) electromagnetic wave has many potential applications, such as phase modulation, buffering, and radio frequency memory. It can be effectively achieved by applying coupled resonator-based electromagnetically induced transparency (EIT) due to its slow light …

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Xバンドフィルタ設計における予測不可能な伝送0の解析と最適化【Powered by NICT】

Ying Jiang, Wei Bin, Tianning Zheng, Jiabin Chen et autres

Analysis and optimization of the unpredictable transmission zero in X-band filter design

Ying Lan Jiang, Bin Wei, Tianning Zheng, Jiabin Chen et autres

This article focuses on the common problem of uncontrollable transmission zero (TZ) in X-band filter design. Using uniform impedance rectangular resonator (UIRR) to design an X-band filter always results in an unpredictable TZ on the low-frequency side of the passband, which greatly …

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Design and implementation of a narrow-band superconducting X-band diplexer with high isolation

Bin Wei, Tianning Zheng, Bisong Cao, Linan Jiang et autres

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Compact Superconducting Diplexer Design With Conductor-Backed Coplanar Waveguide Structures

Tianning Zheng, Bin Wei, Bisong Cao, Xubo Guo et autres

This paper presents a compact superconducting diplexer with conductor-backed coplanar waveguide (CBCPW) structures. The couplings of the CBCPW structure resonators are significantly weaker than those of traditional microstrip resonators. High isolations between two channels are therefore achieved by using the CBCPW structures …

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Superconducting Varactor Tunable Filter With Constant Bandwidth Using Coupling Line

Guannan Suo, Xubo Guo, Bisong Cao, Bin Wei et autres

This letter presents a superconducting tunable filter with a constant bandwidth using semiconductor varactors. A coupling line is introduced to adjust the inter-resonator coupling to meet the requirement of constant bandwidth. The external couplings are designed to remain a good passband shape …

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Design of a High-Power Superconducting Filter With Novel DGS Structures

Tianning Zheng, Bin Wei, Bisong Cao, Xubo Guo et autres

A novel defected ground structure (DGS) resonator with improved power handling capability is proposed in this paper. The current density distribution of the DGS resonator is simulated and compared with that of the complete ground structure (CGS) resonator. Simulation shows that the …

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