2022 Photonics & Electromagnetics Research Symposium (PIERS)最新文献

{"title":"Dielectric-supported Rhombus-shaped Meander-line Slow-wave Structure for a V-band Dual-sheet Beam Traveling Wave Tube","authors":"Yuxin Wang, Yang Dong, Shaomeng Wang, Y. Gong","doi":"10.1109/piers55526.2022.9793127","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793127","url":null,"abstract":"A novel dual-beam rhombus-shaped meander line slow wave structure (DS-RSML SWS) is proposed in this paper, which is suitable for low-voltage operation and device miniaturization. The planar SWS is supported by two dielectric rods from both sides, making it suitable for dual-beam operation. The high frequency and transmission characteristics of the SWS are investigated. The input-output couplers connect the SWS with the standard waveguide by adopting step waveguide. The backward-wave oscillation is effectively suppressed by negative pitch tapering. Particle-in-cell (PIC) simulation results show that the output power of the rhombus-shaped SWS can reach 83 W at 58 GHz, under the conditions of a dual-sheet beam (7.7kV, 0.1 A) and input power of 0.1 W, with gain and electron efficiency of 29 dB and 10.8%, respectively.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116802385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of High-Q Sensor for NQR Detection of Dangerous Materials","authors":"S. Mamadazizov, N. G. Calicioglu, Rian Ryzhov, G. Mozzhukhin, B. Rameev","doi":"10.1109/piers55526.2022.9793064","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793064","url":null,"abstract":"Nuclear Quadrupole Resonance (NQR) is a conventional technique for solid sample investigation. However,one of the main disadvantages of NQR is the low signal-to-noise ratio at low frequencies. This could be resolved by designing high sensitive coils. The goal of the current work is to develop an RF probe with a high quality factor. Thus, a finite element modelingsimulation of several planar RF coil configurations using the CST Studio package was made.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121234562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Offshore Electromagnetic Wave Propagation Loss Model Based on Ray Tracing Method","authors":"Zhenjia Chen, Lihui Wang, Ran Chen","doi":"10.1109/piers55526.2022.9793142","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793142","url":null,"abstract":"Wireless communication technology supports the safe implementation of maritime operations. The offshore electromagnetic wave propagation loss model is of great significance to the study of offshore wireless communication channels. The process of electromagnetic wave propagation on the sea can be expressed as a double-path model. Based on the ray tracing method, electromagnetic waves are regarded as numerous rays propagating from the source point. The rays are affected by the curvature of the earth and the refractive index of the air and will bend when propagating in the air. Rays incident on the rough sea surface will be reflected and absorbed. According to the wind speed and wind direction parameters, combined with the stochastic process method, the rough sea surface geometric model can be estimated. According to the salinity and temperature of the sea surface, the reflection coefficient and absorption coefficient of the rays can be determined. According to the tilt angle attitude of the transmitting antenna and the antenna pattern, the initial energy of the rays of different radiation directions can be determined. Offshore electromagnetic wave propagation loss model based on ray tracing method, research on receiving ball size design and offshore electromagnetic spectrum sensing method. The offshore electromagnetic wave propagation loss model proposed in this paper is based on the antenna attitude and rough sea surface model, which can more accurately describe the state of the offshore environment. Computational electromagnetics methods can effectively improve the estimation accuracy of the spatial distribution of offshore electromagnetic spectrum. According to the judgment of the rough sea surface geometric model and the position of the signal source to quickly estimate the effective ray, the ray tracing method is optimized and accelerated, and the speed of the model calculation is improved. Based on the ray tracing method and the rough sea surface model, an offshore electromagnetic wave propagation loss model is established. Combined with the auxiliary parameters of the sensor environment, it effectively describes the influence of the dynamic sea surface on the propagation of radio signals.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114922838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution Automotive Radar Point Cloud Imaging and Processing","authors":"Meng Jiang, Gang Xu, Haonan Pei, Hui Zhang, Kunpeng Guo","doi":"10.1109/piers55526.2022.9792662","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792662","url":null,"abstract":"Automotive radar is a class of important and necessary sensor for Advanced Driver Assistance System (ADAS) due to its recognized advantages of small size, low hardware cost, all-weather working, high-resolution and etc. However, the limitation of low angular resolution with low imaging performance can hardly satisfy the need of next-stage ADAS. The emerging 4D imaging radar (4D-radar), adopting the multi-chip cascaded multiple-input multiple-output (MIMO) technology, can achieve high resolution in the azimuth and elevation dimensions with providing high-quality three-dimensional point clouds images. In this paper, a novel algorithm is proposed by integrating the high-resolution MIMO radar point clouds imaging and processing. First, we have symmetrically studied the MIMO radar technologies, classing into three main modes, TDM-MIMO, Phase coding MIMO, DDM-MIMO. In particular, we have designed a mixed TDM-DDM-MIMO framework for point clouds imaging. Finally, the experimental analysis of the simulation is provided to confirm the effectiveness of the proposal.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122180287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Wideband High Gain Taper Slot Antenna for 5G Millimeter-wave Imaging System Application","authors":"Yao Zhang, K. Huang, Li Gao","doi":"10.1109/piers55526.2022.9792932","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792932","url":null,"abstract":"This paper presents a wideband coplanar waveguide (CPW) feed taper slot antenna. A microstrip-line-to-slot transition structure is used to excite the slot radiator. Wideband performance is realized by the aperiodic continuously scaled structure. The fabricated antenna prototype features a compact size of 61 × 25 × 0.16 mm3. Measurement results show this antenna achieves better than 10 dB return loss within an ultra-wideband (10–40 GHz). The measured peak gain within this band ranges from 6 to 12.5 dBi. The wideband characteristic makes this antenna attractive in 5G wideband phased-array beamformer and wideband imaging system applications.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128217319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Gravity Tailored Ultra-broadband Absorber Based on High-impedance Surface","authors":"Haozhe Zhang, Hao Pan, Hai‐feng Zhang","doi":"10.1109/piers55526.2022.9792833","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792833","url":null,"abstract":"We design a three-dimensional ultra-broadband tunable metamaterial absorber tailed by the gravity field (GF) with changing the position of the liquid metal in theory. The ultra-broadband absorption is achieved by the high-impedance surface and the liquid metal. Furthermore, the tuning absorption can be implemented by virtue of the liquid metal pouring into the different parts of the glass cavities under GF regulation. When such an absorber is not rotated, for the TE wave, the absorption rate exceeds 90% at 1.8–57.5GHz with a wide relative absorption bandwidth of 187.8%. yet for the TM wave, the absorptivity goes beyond 90% from 5.6 GHz to 56.4 GHz. The presented absorber exhibits ultra-broadband absorption at 1.6–45.3GHz (the absorptivity is higher than 90%) with this absorber rotated 180° in the x-y plane for the TE and TM waves. While the absorptivity is near to null at 1.6 60 GHz with the devised absorber rotated 180° in the y-z plane. Besides, the simulations show that this absorber can realize the high absorption upon a wider incident angle.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129336714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PIERS 2022 Committees","authors":"","doi":"10.1109/piers55526.2022.9792671","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792671","url":null,"abstract":"","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130381756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wavelength-tunable Q-switched Mode-locked Multimode Fiber Laser","authors":"Jia-Wen Wu, Guangyu Liu, Z. Luo, Wen-Cheng Xu, A. Luo","doi":"10.1109/piers55526.2022.9793046","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793046","url":null,"abstract":"A graphene-deposited multimode microfiber is used for generating Q-switched mode-locked (QML) pulses in multimode fiber laser. Due to the multimode interference filtering effect, the wavelength-tunable QML operation is achieved.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wideband Schiffman Phase Shifters Designed with Deep Neural Networks","authors":"S. An, B. Zheng, H. Tang, H. Li, L. Zhou, Y. Dong, M. Haerinia, Houyu Zhang","doi":"10.1109/piers55526.2022.9792858","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792858","url":null,"abstract":"Phase shifters play an important role in beam scanning phased arrays, modulators and communication systems. Ideal phase shifters should provide flat phase shift over wide operating frequency band with low insertion and return loss. Schiffman phase shifters are compact in size, easy to fabricate using Print Circuit Board (PCB) technology, while still provide accurate phase shift in relatively wide bandwidth (usually $gt 50$%), making them stand out from various wideband phase shifter designs. However, due to the approximations being used during the design and the unquantifiable influences of the chamfered entries, fringing effects and parasite inductances of the narrow links between coupled lines, it's hard to analytically calculate the electromagnetic (EM) response of a Schiffman phase shifter given the dimensions. As a result, time-consuming fine-tuning is still required during the design process. In this paper, a novel DNN approach is introduced for the fast inverse design of wideband Schiffman phase shifters. For the first time, a predicting neural network that is capable of simultaneously modeling the phase shift, insertion loss and return loss of Schiffman phase shifter structures over a relative wide spectrum (133%) has been demonstrated. Based on the highly accurate forward predicting network, a tandem inverse design network was also constructed for the fast inverse designs of Schiffman phase shifter with arbitrary phase shift and bandwidth targets. Different from traditional design approaches, the well-trained inverse design network generates design parameters in milliseconds, with no further EM simulation needed. Several Schiffman phase shifters with 60% and 40% fractional bandwidth were designed, fabricated and tested to verify the efficacy of the proposed approach. This DNN-enabled method validates the feasibility of on-demand wideband phase shifter designs, which can be easily generalized to other EM problems, including but not limited to antenna design, microwave circuit design and EM compatibility problems.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"109 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130616900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single Cell Optical Manipulation and Molecular Detection","authors":"Hongbao Xin, Baojun Li","doi":"10.1109/piers55526.2022.9792592","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792592","url":null,"abstract":"Single cell manipulation and molecular detection is of great importance for single cell analysis and biopsy at subcellular or single molecule level. In this talk, I will share our recent work on single cell optical manipulation and detection. Single bacteria detection and single cell surgery will first be discussed based on optical trapping. Indirect manipulation and actuation will then be presented via optical force-controlled bio-micromotor. Finally, I’ll talk about enzyme detection and quantum electron transfer detection in living cells via single plasmonic nanoantenna.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124231795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}