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Investigations of all-optical gates based on linear photonic crystals using the PSK technique and beam interference effect 利用PSK技术和光束干涉效应研究基于线性光子晶体的全光门
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2244829
Asghar Askarian, F. Parandin
{"title":"Investigations of all-optical gates based on linear photonic crystals using the PSK technique and beam interference effect","authors":"Asghar Askarian, F. Parandin","doi":"10.1080/02726343.2023.2244829","DOIUrl":"https://doi.org/10.1080/02726343.2023.2244829","url":null,"abstract":"ABSTRACT In this paper, all optical OR, AND, NOR and NAND gates based on linear photonic crystals (LPhCs) have been numerically designed and simulated by the plane wave expansion (PWE) and finite difference time domain (FDTD) methods. The LPhC fundamental structure with cross-section of 114 is used for designing the proposed all optical gates (AOGATEs), which is composed of 15 × 23 cubic matrix of dielectric silicon rods in air substrate. The mechanism of the proposed AOGATEs is performed based on phase shift keying (PSK) technique and beam interference effect. Simulation results by FDTD approach illustrate the minimum contrast ratio of 8.88 and 10.31 dB for all optical AND/NOR and OR/NAND logic gates, respectively. Also, the minimum bit rate is obtained as 3.34 Tb/s for AND/NOR and 5 Tb/s for OR/NAND logic gates.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"291 - 308"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44242616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design of folded rectangular microstrip antenna on thinner substrate for wideband response 用于宽带响应的薄衬底折叠矩形微带天线的设计
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2244830
Venkata A. P. Chavali, A. Deshmukh
{"title":"Design of folded rectangular microstrip antenna on thinner substrate for wideband response","authors":"Venkata A. P. Chavali, A. Deshmukh","doi":"10.1080/02726343.2023.2244830","DOIUrl":"https://doi.org/10.1080/02726343.2023.2244830","url":null,"abstract":"ABSTRACT Wideband microstrip antenna is realized by adding more than one resonant modes in the patch. In this paper, on electrically thinner substrate, design of modified shape rectangular microstrip antenna by employing folded rectangular patch is presented for linear polarized wideband response. Unlike the conventional rectangular patch, radiation pattern and resonance frequency at the second-order resonant mode are modified and along with the fundamental mode, yield wider bandwidth. On substrate of thickness 0.045λ0, folded patch design yields bandwidth of more than 20% along with the broadside radiation pattern and gain more than 8 dBi. Against the reported wideband designs, proposed design does not employ parasitic patches, resonant slot, modified ground plane structures, but on thinner substrate achieves the bandwidth of more than 20%. Resonant length formulation and subsequent design methodology are presented, which is useful in realizing similar folded antenna as per the specific frequency band. Simulated results have been experimentally verified, which shows close agreement.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"309 - 321"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43888946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An ultra-low profile reconfigurable multi-beam antenna based on impedance modulated metasurface 基于阻抗调制元表面的超低剖面可重构多波束天线
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2249293
Zekui Zhang, Wen Zhang
{"title":"An ultra-low profile reconfigurable multi-beam antenna based on impedance modulated metasurface","authors":"Zekui Zhang, Wen Zhang","doi":"10.1080/02726343.2023.2249293","DOIUrl":"https://doi.org/10.1080/02726343.2023.2249293","url":null,"abstract":"ABSTRACT A new ultra-low profile reconfigurable multi-beam antenna is proposed. It is based on impedance modulated metasurface fed with a one-divide-four electronically controllable feed network. By properly arranging the feed network, six beams at different azimuth planes are formed by controlling four diodes. The gain is enhanced through loading a cross metal strip in the middle of metasurface. The results indicate that the realized antenna has dimensions of 126 mm × 126 mm × 4 mm (equal to 2.1λ0 ×2.1λ0 ×0.067λ0, λ0, wavelength at 5 GHz). Its −10-dB bandwidth is larger than 30.0% (4.28 GHz − 5.79 GHz) when diodes I-V are turned on successively. And it can radiate beams pointing to (0°, 33°), (20°, 44°), (150°, 36°), (180°, 35°). Furthermore, the beams can be steered to (0°, 43°) and (180°, 43°) in case that diodes I&II or III&IV are switched on simultaneously.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"361 - 373"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49297187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A wideband omnidirectional dipole antenna with parasitic loop based on multi-resonant modes 基于多谐振模式的宽带全向寄生环偶极子天线
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2244832
Yanfeng Geng, Huihui Gao, G. Han, L. Han, H. Yuan, Wenmei Zhang
{"title":"A wideband omnidirectional dipole antenna with parasitic loop based on multi-resonant modes","authors":"Yanfeng Geng, Huihui Gao, G. Han, L. Han, H. Yuan, Wenmei Zhang","doi":"10.1080/02726343.2023.2244832","DOIUrl":"https://doi.org/10.1080/02726343.2023.2244832","url":null,"abstract":"ABSTRACT A wideband omnidirectional dipole antenna with parasitic loop based on multi-resonant modes is proposed for WLAN, 5 G Sub-6 GHz, and RFID applications. The antenna is composed of a regular dipole with co-planar strips and a parasitic loop with four U-shaped branches. A regular dipole with co-planar strips is used to generate two resonant modes, and the parasitic loop around it generates another two resonant modes. By combining these four resonant modes, a wideband characteristic is achieved. In order to reduce the cross-polarization, four U-shaped branches are introduced, and then the cross-polarization levels are decreased from −2 dB to −13 dB. A prototype with a compact size of 0.6λ0 ×0.56λ0 ×0.012λ0 (λ0 is the wavelength in free space at center frequency) is fabricated and tested. Measurement shows that effective bandwidth is 1.8–5.6 GHz (102.7%), the measured gain variation is only 1.3 dBi, and omnidirectional radiation patterns are achieved over the operating band.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"322 - 333"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46980829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A wideband quasi-Yagi antenna using symmetrical slots on the ground plane 地平面上使用对称缝隙的宽带准八木天线
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2244841
Goksel Turan, H. Odabasi
{"title":"A wideband quasi-Yagi antenna using symmetrical slots on the ground plane","authors":"Goksel Turan, H. Odabasi","doi":"10.1080/02726343.2023.2244841","DOIUrl":"https://doi.org/10.1080/02726343.2023.2244841","url":null,"abstract":"ABSTRACT A wideband quasi-Yagi antenna with symmetrical rectangular slots in the ground plane is studied. The feeding structure of the antenna is simplified, consisting of a microstrip transmission line and a short strip. The driver and director arms are designed as half on both sides of the substrate to improve pattern stability. The antenna’s bandwidth is improved by symmetrically adding rectangular slots to the ground. The antenna works between and GHz with a gain that varies between to dBi, a bandwidth of , and an efficiency of more than . The antenna has a very compact size of ( is the wavelength for the lowest operating frequency). The simulation and measurement results are in good agreement. The antenna has highly stable end-fire radiation within its operating frequency and can be used for wideband wireless communication systems.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"349 - 360"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48354174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual Plane Monopulse Comparator Network System using Substrate Integrated Waveguide Hybrid Coupler 采用衬底集成波导混合耦合器的双平面单脉冲比较器网络系统
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-07-04 DOI: 10.1080/02726343.2023.2244833
Sanjay Bhilegaonkar, P. Mane
{"title":"Dual Plane Monopulse Comparator Network System using Substrate Integrated Waveguide Hybrid Coupler","authors":"Sanjay Bhilegaonkar, P. Mane","doi":"10.1080/02726343.2023.2244833","DOIUrl":"https://doi.org/10.1080/02726343.2023.2244833","url":null,"abstract":"ABSTRACT This paper presents a new compact monopulse comparator network system (MCNS) using a modal substrate-integrated waveguide (SIW) hybrid coupler for the first time. The main objective of this research is to evaluate the performance of dual-plane MCNS based on return loss and coupling coefficients. A detailed analysis, design, and implementation of dual-plane MCNS is performed using the four modal SIW hybrid couplers. The sum and difference signals required by the monopulse antenna are generated with the proper orientation of couplers. The in-phase and out-phase characteristics of the couplers are generated using TE102 and TE201 orthogonal degenerate modes. A complete planar and compact SIW structure has a footprint of 58.2 mm × 58.2 mm. MCNS is fabricated on a single-layer Rogers RO4003 substrate with a permittivity of 3.55 and thickness of 0.787 mm using a photo-lithographic process. MCNS provides excellent return loss characteristics at all input and output ports. It measured the isolation better than 20 dB for all output ports in the desired frequency band. It achieved good coupling between all input and output ports. Simulation and measured results show that at 10 GHz, MCNS gives better performance parameters and can be used in monopulse antenna.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"334 - 348"},"PeriodicalIF":0.8,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48089300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel wideband dielectric resonator antenna with compact size 一种新型小尺寸宽带介质谐振器天线
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-05-19 DOI: 10.1080/02726343.2023.2230065
H. Dalili Oskouei, H. Dehjouriyan, M. M. Shirkolaei
{"title":"A novel wideband dielectric resonator antenna with compact size","authors":"H. Dalili Oskouei, H. Dehjouriyan, M. M. Shirkolaei","doi":"10.1080/02726343.2023.2230065","DOIUrl":"https://doi.org/10.1080/02726343.2023.2230065","url":null,"abstract":"ABSTRACT In this paper, a wideband dielectric resonator antenna with compact size is presented. The proposed antenna is formed by four dielectrics. Non-adjacent dielectrics have same permittivity constant. A 50-ohm micro strip feed line is used to exciting the antenna through the coupling slot. By optimizing the dimensions and structure of the antenna, impedance bandwidth of 3.25 to 4.4 GHz is obtained. Impedance bandwidth of the proposed antenna is a very wide bandwidth compared to the previous dielectric antennas. The antenna gain is about 9.6 dB.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"285 - 290"},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41836098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Balanced single/dual band trisection filters 平衡单/双频三段滤波器
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-05-19 DOI: 10.1080/02726343.2023.2230064
Miguel-Antonio Romero-Ramirez, J. Olvera-Cervantes, T. Kataria, A. Corona‐Chavez
{"title":"Balanced single/dual band trisection filters","authors":"Miguel-Antonio Romero-Ramirez, J. Olvera-Cervantes, T. Kataria, A. Corona‐Chavez","doi":"10.1080/02726343.2023.2230064","DOIUrl":"https://doi.org/10.1080/02726343.2023.2230064","url":null,"abstract":"ABSTRACT This work presents balanced microstrip filters with asymmetrical frequency response based on a balanced trisection topology. The proposed balanced trisection topology has the feature of being used in single and multiband microwave filters. In this work, in order to test the topology flexibility, we address two applications, one for a single-band filter and the other for a dual-band filter. This topology introduces TZs on either side of the passband edges, improving the selectivity on one side of the passband. The non-adjacent resonators of the single-band trisection balanced filter are based on a Pi-network balanced resonator which is composed by six transmission lines (TLs) and two inductors (Ls). The differential-mode (DM) and common-mode (CM) resonances can be chosen independently with a proper selection of the impedances and the electrical lengths of TLs in order to have high DM stopband and intrinsic high common mode rejection (CMR). The Pi-network was modified and analyzed under the even and odd mode technique to have a dual-band behavior. Good agreement between simulation and measurement was achieved.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"269 - 284"},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45449579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel corrugated rectangular dielectric resonator antenna with wide half power beam width 新型宽半功率波束宽的矩形波纹介质谐振器天线
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-05-19 DOI: 10.1080/02726343.2023.2221128
S. Fakhte
{"title":"Novel corrugated rectangular dielectric resonator antenna with wide half power beam width","authors":"S. Fakhte","doi":"10.1080/02726343.2023.2221128","DOIUrl":"https://doi.org/10.1080/02726343.2023.2221128","url":null,"abstract":"ABSTRACT In this work, a dielectric resonator antenna element is corrugated in a specific way, which led to increase its half power beam width (HPBW). The HPBW of the antenna is investigated for different values of corrugation depth and it has been concluded that HPBW can be increased by increasing this depth. By embedding periodic grooves in the DRA walls, it is possible to adjust the radiation intensity ratio of the upper wall to the side walls. By increasing this ratio, the HPBW of the antenna can be increased. To confirm the concept of beam widening method, a prototype of the corrugated DRA is fabricated and measured. Measured results show an impedance bandwidth of 23% (3.8–4.8 GHz). The measured E- and H-plane HPBWs at 4.1 GHz are 137° and 123°, respectively. Measured and simulated results are in a good agreement.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"249 - 257"},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48559767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Wideband Dual-Polarized Tightly Coupled Array with Compact Size for 5G Millimeter-wave Mobile Devices 5G毫米波移动设备的小尺寸宽带双极化紧耦合阵列
IF 0.8 4区 工程技术
Electromagnetics Pub Date : 2023-05-19 DOI: 10.1080/02726343.2023.2227471
Chan Bai, Shuai Zhang, Qi Gong, Zixuan Song, Yu-Guo Liu
{"title":"A Wideband Dual-Polarized Tightly Coupled Array with Compact Size for 5G Millimeter-wave Mobile Devices","authors":"Chan Bai, Shuai Zhang, Qi Gong, Zixuan Song, Yu-Guo Liu","doi":"10.1080/02726343.2023.2227471","DOIUrl":"https://doi.org/10.1080/02726343.2023.2227471","url":null,"abstract":"ABSTRACT A miniaturized dual-polarized smartphone antenna based on tightly coupled dipole array (TCDA), applying to 5 G millimeter-wave (mmW), is presented. The antenna element has a size of 2.94 mm × 3.05 mm × 0.94 mm and covers a bandwidth of 91.5% and 88.4% with VSWR＜2 for pol-x and pol-y, respectively. To achieve low cost, compact size, and reduce the number of ports, a specific miniature feeding structure, using Γ-shaped coupling probes, is applied. The proposed smartphone antenna consists of eight elements with a size of 23.8 mm × 3.5 mm × 0.94 mm. Experiments show that the TCDA can support a minimum realized gain of 9.51 dB and 9.07 dB for pol-x and pol-y, respectively, within 5 G mmW bands. To verify the design concept, TCDA is fabricated and measured, which achieves 60° scanning without grating lobes. The measurement results demonstrate that the proposed antenna is well suited for future 5 G mmW mobile phones.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":"43 1","pages":"258 - 268"},"PeriodicalIF":0.8,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44053241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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