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Electrically tunable liquid crystal coplanar waveguide stepped-impedance resonator Research Articles
Xingye Fan, Ruozhou Li, Jing Yan, Yuming Fang, Ying Yu,jing.yan@njupt.edu.cn,ying_yu_001@163.com
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 9, Pages 1270-1276 doi: 10.1631/FITEE.2000278
Keywords: 可调阶梯阻抗谐振器;液晶;共面波导
Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process Research Articles
Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 174-181 doi: 10.1631/FITEE.1900453
Keywords: 60 GHz Antenna-in-package (AiP) Coplanar-waveguide-fed (CPW-fed) ring resonators Glass integrated passive device (GIPD) Metasurface antenna Miniaturized antenna
Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong
Strategic Study of CAE 2001, Volume 3, Issue 11, Pages 49-53
Vectorial eigenmodes supported by the buried rectangular and rib optical waveguides are obtained using variable transformed series expansion method. The infinite x-y plane is mapped into a unit square by an elegant tangent-type variable transformation. Consequently, the boundary truncation is not necessary, and the nonphysical reflection is eliminated. As a result, the calculation accuracy is promoted. In addition, small matrix derived from this method promotes the computational efficiency. Comparatively agreeing with those previously published, the results can be used to optimize the photonic devices.
Keywords: variable transformed series expansion method optical waveguides vectorial eigenmode analysis
COPPER: a combinatorial optimization problem solver with processing-in-memory architecture Correspondence
Yitong YAO, Gang DONG, Zhangming ZHU, Yintang YANG,19111110564@stu.xidian.edu.cn,gdong@xidian.edu.cn,zhangmingzhu@xidian.edu.cn,ytyang@xidian.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 5, Pages 759-766 doi: 10.1631/FITEE.2200398
Keywords: 圆极化;滤波效应;贴片天线;衬底集成波导
Chip-based waveguides for high-sensitivity biosensing and super-resolution imaging Review Articles
Chen-lei Pang, Xu Liu, Wei Chen, Qing Yang,qingyang@zju.edu.cn
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 8, Pages 1134-1149 doi: 10.1631/FITEE.1900211
Keywords: Waveguide-based sensing Waveguide-based imaging Evanescent illumination Frequency shifting and stitching
A mechanical reliability study of 3-dB waveguide hybrid couplers in submillimeter and terahertz bands Research Articles
Zhongqian Niu, Bo Zhang, Daotong Li, Dongfeng Ji, Yang Liu, Yinian Feng, Tianchi Zhou, Yaohui Zhang, Yong Fan,zhangbouestc@yeah.net
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 8, Pages 1104-1113 doi: 10.1631/FITEE.2000229
Keywords: 定向耦合器;3-dB分支波导定向耦合器;亚毫米波器件;太赫兹电路;机械可靠性
Synthesized All-Pass Waveguide for Ultrafast Electronics Article
Desong Wang,Ke Wu
Engineering 2023, Volume 30, Issue 11, Pages 49-54 doi: 10.1016/j.eng.2023.04.005
Ultrashort pulse transmission has been recognized as a primary problem that fundamentally hinders the development of ultrafast electronics beyond the current nanosecond timescale. This requires a transmission line or waveguide that exhibits an all-pass frequency behavior for the transmitted ultrashort pulse signals. However, this type of waveguiding structure has not yet been practically developed; groundbreaking innovations and advances in signal transmission technology are urgently required to address this scenario. Herein, we present a synthesized all-pass waveguide that demonstrates record guided-wave controlling capabilities, including eigenmode reshaping, polarization rotation, loss reduction, and dispersion improvement. We experimentally developed two waveguides for use in ultrabroad frequency ranges (direct current (DC)-to-millimeter-wave and DC-to-terahertz). Our results suggest that the waveguides can efficiently transmit picosecond electrical pulses while maintaining signal integrity. This waveguide technology is an important breakthrough in the evolution of ultrafast electronics, providing a path towards frequency-engineered ultrashort pulses for low-loss and low-dispersion transmissions.
Keywords: All-pass waveguide Ultrashort pulse Picosecond transmission Ultrafast electronics Terahertz technology Mode-selective transmission line
耿淳,连继伟,丁大志
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 9, Pages 1366-1374 doi: 10.1631/FITEE.2200454
GaAlAs/GaAs Planar Waveguide Filters Based on Cascade Rectangular Resonators
Cai Chun,Liu Xu,Xiao Jinbiao,Ma Changfeng,Chen Lin,Ding Dong,Zhang Mingde,Sun Xiaohan,Xu Xiaole,Chen Tangsheng,Li Fuxiao
Strategic Study of CAE 2004, Volume 6, Issue 2, Pages 61-66
Based on the electromagnetic model for four-port resonant filter, the optical characteristics of several filters with rectangular cascade resonators have been numerically simulated by utilizing two-dimensional FDTD method. The relationship between the number of cascade resonators and the filtering features is analyzed. The narrow-band filter with four cascade resonators implemented on GaAlAs/GaAs planar waveguide is designed and fabricated. The experiment result shows the half-width of filtering spectrum for the chip is about 10 nm, which coincides well with that of the simulation.
Keywords: WDM planar lightwave circuits optical filters resonator FDTD
On the Order Reduction of Dynamics Models of Flexible Spacecrafts
Miao Bingqi,Qu Guangji,Xia Suiqin,Cheng Daosheng
Strategic Study of CAE 2001, Volume 3, Issue 11, Pages 60-64
The usual mode sets for the dynamics modeling of flexible spacecraft are reviewed. Some mode reduction criterions for the selection of system retained modes are summarized. It is pointed out that the modal cost analysis and the internal balance theory are for the system mode selection and there is the problem how to use these criterions for the component elastic mode or the system elastic deformation mode selection. A tactic for using the order reduction criterions for the dynamics modeling is introduced. An example is given to show the comparison of modeling results with different mode sets and to illustrate how to use the mode reduction criterions for the dynamics modeling of flexible spacecraft.
Keywords: spacecraft flexible bodies dynamics reduction of models
Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation Correspondence
Yuyan CAO, Zijun GUO, Zhangcheng HAO
Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10, Pages 1568-1578 doi: 10.1631/FITEE.2200122
A planar millimeter-wave shared-aperture array antenna is proposed and designed in this paper. By composing the substrate integrated waveguide (SIW) and the stripline, the K-band antenna is embedded inside the Ka-band antenna to achieve a smaller size and a low profile by sharing an aperture. The Ka-band antenna radiates through the parallel slot pairs on the surface of the SIW cavities with horizontal polarization, while the K-band antenna radiates through the butterfly-shaped slots with vertical polarization, which are also designed on the surface. Then the two array antennas can radiate by sharing a common aperture with high isolation. To verify this idea, a prototype of an 8×8 shared-aperture array antenna has been designed with center frequencies of 19 and 30 GHz and fabricated using multilayer printed circuit board (PCB) technology. The measurement results show that the −10 dB impedance bandwidths in the K- and Ka-bands are 7.73% and >20%, and the corresponding isolations are higher than 60 and 44 dB, respectively. The proposed shared-aperture antenna has a small footprint, a low profile, and high isolation, and is a promising candidate to design compact millimeterwave wireless systems.
Keywords: 共口径;平面天线;高隔离度;基片集成波导
Zihang Qi, Xiuping Li, Hua Zhu,qizihang@bupt.edu.cn,xpli@bupt.edu.cn,judy-cool@163.com
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 609-614 doi: 10.1631/FITEE.2000503
Ten-channel mode-division-multiplexed silicon photonic integrated circuit with sharp bends Special Feature on Optoelectronic Devices and Inte
Chen-lei LI, Xiao-hui JIANG, Yung HSU, Guan-hong CHEN, Chi-wai CHOW, Dao-xin DAI
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 4, Pages 498-506 doi: 10.1631/FITEE.1800386
A multimode silicon photonic integrated circuit (PIC) comprising a pair of on-chip mode (de)multiplexers with 10-mode channels and a multimode bus waveguide with sharp bends is demonstrated to enable multi-channel on-chip transmissions. The core width of the multimode bus waveguide is chosen such that it can support 10 guided modes, of which there are four transverse-magnetic polarization modes and six transverse-electric polarization modes. This multimode bus waveguide comprises sharp bends based on modified Euler curves. Experimental results demonstrate that the present silicon PIC enables the 10-channel on-chip transmission with a low inter-mode crosstalk of approximately −20 dB over a broad bandwidth of 1520–1610 nm even when the bending radius of the S-bend is as small as 40 μm. Compared with a silicon PIC using a conventional arc-bend with the same bending radius, our proposed PIC demonstrates a significant improvement.
Keywords: Silicon Multimode Waveguide Euler-bends
An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in target detection and tracking Research Article
Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4, Pages 567-581 doi: 10.1631/FITEE.2200473
Keywords: Antenna Leaky-wave antenna (LWA) Substrate-integrated waveguide (SIW) Sum and difference beam Target detection and tracking
1.3-μm 4×25-Gb/s hybrid integrated TOSA and ROSA Special Feature on Optoelectronic Devices and Inte
Yu LIU, Hao-tian BAO, Yi-ming ZHANG, Zhi-ke ZHANG, Yun-shan ZHANG, Xiang-fei CHEN, Jun LU, Yue-chun SHI
Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 4, Pages 490-497 doi: 10.1631/FITEE.1800371
The design and fabrication of a compact and low-cost 4×25-Gb/s transmitter optical sub-assembly (TOSA) and receiver optical sub-assembly (ROSA) using a hybrid integrated technique are reported. TOSA and ROSA are developed without thermoelectric cooler for coarse wavelength division multiplexing applications. Physical dimension of the packaged optical subassembly is limited to 11.5 mm×5.4 mm×5.4 mm. The design of TOSA and ROSA is employed using a silica-based arrayed waveguide grating chip to select the specific channel wavelength at O-band. In TOSA, the wavelength of four 1.3-μm discrete directly modulated laser chips is well controlled based on the reconstruction equivalent chirp technique. In the back-to-back transmission test, bit error rates for all lanes of cascade of the TOSA and ROSA are small. A clear opening eye diagram is obtained.
Keywords: Reconstruction equivalent chirp Arrayed waveguide grating Transmitter optical subassembly Hybrid integrated
Title Author Date Type Operation
Electrically tunable liquid crystal coplanar waveguide stepped-impedance resonator
Xingye Fan, Ruozhou Li, Jing Yan, Yuming Fang, Ying Yu,jing.yan@njupt.edu.cn,ying_yu_001@163.com
Journal Article
Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process
Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG
Journal Article
Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series Expansion Method
Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong
Journal Article
COPPER: a combinatorial optimization problem solver with processing-in-memory architecture
Yitong YAO, Gang DONG, Zhangming ZHU, Yintang YANG,19111110564@stu.xidian.edu.cn,gdong@xidian.edu.cn,zhangmingzhu@xidian.edu.cn,ytyang@xidian.edu.cn
Journal Article
Chip-based waveguides for high-sensitivity biosensing and super-resolution imaging
Chen-lei Pang, Xu Liu, Wei Chen, Qing Yang,qingyang@zju.edu.cn
Journal Article
A mechanical reliability study of 3-dB waveguide hybrid couplers in submillimeter and terahertz bands
Zhongqian Niu, Bo Zhang, Daotong Li, Dongfeng Ji, Yang Liu, Yinian Feng, Tianchi Zhou, Yaohui Zhang, Yong Fan,zhangbouestc@yeah.net
Journal Article
Compact millimeter-wave air-filled substrate-integrated waveguide crossover employing homogeneous cylindrical lens
耿淳,连继伟,丁大志
Journal Article
GaAlAs/GaAs Planar Waveguide Filters Based on Cascade Rectangular Resonators
Cai Chun,Liu Xu,Xiao Jinbiao,Ma Changfeng,Chen Lin,Ding Dong,Zhang Mingde,Sun Xiaohan,Xu Xiaole,Chen Tangsheng,Li Fuxiao
Journal Article
On the Order Reduction of Dynamics Models of Flexible Spacecrafts
Miao Bingqi,Qu Guangji,Xia Suiqin,Cheng Daosheng
Journal Article
Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation
Yuyan CAO, Zijun GUO, Zhangcheng HAO
Journal Article
Low-cost high-order-mode cavity backed slot array antenna using empty substrate integrated waveguide for the 5G n260 band
Zihang Qi, Xiuping Li, Hua Zhu,qizihang@bupt.edu.cn,xpli@bupt.edu.cn,judy-cool@163.com
Journal Article
Ten-channel mode-division-multiplexed silicon photonic integrated circuit with sharp bends
Chen-lei LI, Xiao-hui JIANG, Yung HSU, Guan-hong CHEN, Chi-wai CHOW, Dao-xin DAI
Journal Article
An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in target detection and tracking
Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn
Journal Article