发布求助
文献互助 智能选刊 最新文献

2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)最新文献

筛选
英文 中文
Compact K-Band Lange Coupler Based 2-Bit RF MEMS Reflection-Type Phase Shifter 基于2位射频MEMS反射型移相器的紧凑k波段范围耦合器
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877134
P. K. Shrivastava, S. Koul, M. Abegaonkar
{"title":"Compact K-Band Lange Coupler Based 2-Bit RF MEMS Reflection-Type Phase Shifter","authors":"P. K. Shrivastava, S. Koul, M. Abegaonkar","doi":"10.1109/IMaRC.2018.8877134","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877134","url":null,"abstract":"Lange Coupler and low-loss shunt DC contact Microelectromechanical System (MEMS) switches have been implemented which in turn reduces the loss of the reflection-type MEMS phase shifter (RTPS) at K-band. ON-OFF mechanism of respective switches in both arms, changes the length of the short-ended stubs which introduces the respective phase changes double of the phase given by the path length. Simulated work of this 2-bit (135°) RTPS shows an average insertion loss of less than 1.1 dB with return loss better than 13.5 dB from 15 to 25 GHZ. The designed phase shifter occupies small area of 1.76 mm × 2.45 mm. The measured maximum phase error between 135° and 90° phase states is 1.15° about 20 GHz frequency.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124427797","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}
引用次数: 1
A Comparative Study of Different Negative Permeability Metamaterial Structures at X band : Useful for Microwave Applications X波段不同负磁导率超材料结构的比较研究:微波应用
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877326
Amitesh Kumar, Arijit Majumder, S. Das, S. Kar
{"title":"A Comparative Study of Different Negative Permeability Metamaterial Structures at X band : Useful for Microwave Applications","authors":"Amitesh Kumar, Arijit Majumder, S. Das, S. Kar","doi":"10.1109/IMaRC.2018.8877326","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877326","url":null,"abstract":"This paper presents a comparative study of eight frequently used negative permeability metamaterial structures at X band (8GHz -- 12.4GHz). The structures have been simulated using commercial 3D FEM (Finite Element Method) solver. A standard scattering-parameter based retrieval method is applied to extract permeability of these structures and compared for size, insertion loss and negative permeability characteristics. Finally, one of the structures have been fabricated and tested using free space focused beam metamaterial characterization setup at X band for validation.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125569840","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}
引用次数: 0
C-Band 6 Bit Compact MMIC Phase Shifter with Reduced Loss 具有低损耗的c波段6位紧凑MMIC移相器
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877265
Manu Raj, S. Chaturvedi
{"title":"C-Band 6 Bit Compact MMIC Phase Shifter with Reduced Loss","authors":"Manu Raj, S. Chaturvedi","doi":"10.1109/IMaRC.2018.8877265","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877265","url":null,"abstract":"A C-band highly compact 6 bit digital phase phase shifter (DPS) on GaAs Monolithic Microwave integrated Circuit (MMIC) is discussed in this paper. The circuit is realized using 0.7µm G7S technology at GAETEC foundry. Switching of the High pass/Low pass network is achieved by 0.7 µm MESFET device which offers reduced insertion loss if compensated with shunt resonating inductors. A measured insertion loss of 6.5 dB with ±0.4 dB loss variation is achieved within 18% bandwidth. The circuit being small in size (4.5mm x 2mm) and having phase shift errors within desirable limits is suitable for integration into a T/R core chip.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122443616","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}
引用次数: 3
Enhanced Receiver Architecture For Leakage Reduction in Wideband EW Transceivers With Overlapping RF And IF 射频与中频重叠的宽带电子战收发器中减少泄漏的增强接收机结构
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877147
Pummy Ratna, Usha P. Verma
{"title":"Enhanced Receiver Architecture For Leakage Reduction in Wideband EW Transceivers With Overlapping RF And IF","authors":"Pummy Ratna, Usha P. Verma","doi":"10.1109/IMaRC.2018.8877147","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877147","url":null,"abstract":"EW transceivers with high input dynamic range, wide bandwidth and overlapping RF & IF frequency bands for simultaneous detection and characterization of incoming signals, are susceptible to RF & LO leakage to IF resulting in erroneous identification of leakage and spurs as threat signals using conventional approaches. This paper presents an enhanced receiver architecture which has been fabricated and tested successfully for RF section of Wideband digital channelized transceiver for precise identification of threat signals by translating the entire input frequency band to X-Band and down-converting to overlapping IF. This eliminates direct leakage problem along with relaxed filter rejection & Mixer isolation requirements for image and spurious rejection and provides clean down-converted signals in multiple input scenario for Nyquist sampling at Low IF. The system has been tested successfully with spurs, RF & LO leakage levels of −60dBm for closely spaced dual input pulsed signals in −10 to −50dBm dynamic range. Enhanced architecture, test results and comparison of the results with heterodyne architecture have been presented.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122577306","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}
引用次数: 2
Development of GaN HEMT based High Power Active Integrated Antenna 基于GaN HEMT的大功率有源集成天线的研制
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877316
Rakhi Kumari, A. Basu, S. Koul
{"title":"Development of GaN HEMT based High Power Active Integrated Antenna","authors":"Rakhi Kumari, A. Basu, S. Koul","doi":"10.1109/IMaRC.2018.8877316","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877316","url":null,"abstract":"A GaN HEMT based high power Amplifier type Active Integrated Antenna (AIA) is demonstrated at 2.4 GHz. First a Power Amplifier is designed, fabricated and measured. It gives 40.8 dBm output power, 62% drain efficiency and 56% power added efficiency. Second, Active Integrated Antenna is designed, fabricated and measured. Input impedance of antenna is selected in such a way that output matching network is eliminated from the power amplifier circuit. Patch antenna serves function of output matching network, load and radiator. Effective Isotropic Radiated Power (EIRP) of AIA is 49.185 dBm. Overall gain of AIA is 22.18 dB. To the best of the authors knowledge this is the highest EIRP achieved with single transistor amplifier type AIA.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122090049","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}
引用次数: 4
RF System Design for Passive Detection of Humans 被动检测人体的射频系统设计
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877273
V. K. Jacob, M. Rakesh, T. Prabhakar, K. Vinoy
{"title":"RF System Design for Passive Detection of Humans","authors":"V. K. Jacob, M. Rakesh, T. Prabhakar, K. Vinoy","doi":"10.1109/IMaRC.2018.8877273","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877273","url":null,"abstract":"In this work, we describe the construction of a radiometric based passive human detection system. Thermal radiations emitted by the human body in the microwave range are sensed by this system. The centre frequency of operation was chosen to be 3.7 GHz for easy penetration through obstacles and for avoiding radio-frequency interference. The system was designed and implemented using off-the-shelf components. The prototype’s performance was evaluated with real-life experiments that were carried out with detection behind wooden doors as well as in front of the system. The results indicate that the system has the capability to detect the presence of a person up to a distance of 2 metres.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124639513","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}
引用次数: 2
An Ultrathin Wide Angle Polarization Insensitive Mid-Infrared Metamaterial Absorber for THz Detection 一种用于太赫兹探测的超薄广角偏振不敏感中红外超材料吸收体
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877169
Nilotpal, Somak Bhattacharyya, P. Chakrabarti
{"title":"An Ultrathin Wide Angle Polarization Insensitive Mid-Infrared Metamaterial Absorber for THz Detection","authors":"Nilotpal, Somak Bhattacharyya, P. Chakrabarti","doi":"10.1109/IMaRC.2018.8877169","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877169","url":null,"abstract":"An ultra-thin broadband mid-infrared metamaterial absorber using array of split ring resonators and crossed slot structure in its unit cell has been reported. The simulation of the structure exhibits greater than 90% absorptivity over the frequency range 42 THz to 53 THz. The structure behaves as an absorber for both TE and TM polarizations so long as the angle of incidence is within 60º. The four fold structural symmetry makes the designed structure insensitive to polarization. The proposed ultra-thin (λ/24) metamaterial absorber is expected to find potential application in THz spectroscopy, imaging techniques and sensing.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129908000","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}
引用次数: 0
High PSL Radar Pulse Compression using Neural Network 基于神经网络的高PSL雷达脉冲压缩
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877226
Veerendra Mittapally, J. Ansari, Vikas Patel
{"title":"High PSL Radar Pulse Compression using Neural Network","authors":"Veerendra Mittapally, J. Ansari, Vikas Patel","doi":"10.1109/IMaRC.2018.8877226","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877226","url":null,"abstract":"Modern radar systems that operate in noise, strong clutter and jamming require advanced signals to help in processing of target echoes. One of the inevitable feature of such advanced radar signals is pulse compression which is responsible for the accuracy, resolution and determination of ambiguity of the range of the target. In the process of maximizing SNR by a factor of the time-bandwidth product of the waveform by a matched filter, relatively strong sidelobes of fixed Peak-to-sidelobe(PSL) ratio remain in the autocorrelation function. Use of certain \"mis-matched\" filters help in reducing the sidelobes but at the cost of reduced resolution. In this paper, an approach using a multilayered feed forward neural network for pulse compression is detailed for its near zero level of sidelobes also without compromising on the range resolution of the radar.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121331761","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}
引用次数: 0
Double Resonator Topology for High Isolation and Low Insertion Loss in SPDT Switch 用于SPDT开关高隔离和低插入损耗的双谐振腔拓扑结构
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877261
Rakhi Kumari, Vijesh Arora, S. Bhalke
{"title":"Double Resonator Topology for High Isolation and Low Insertion Loss in SPDT Switch","authors":"Rakhi Kumari, Vijesh Arora, S. Bhalke","doi":"10.1109/IMaRC.2018.8877261","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877261","url":null,"abstract":"In this paper Double Resonator Topology is used to achieve high isolation and low insertion loss in single pole double through (SPDT) switch. This SPDT switch is based on GaAs MESFET and operates in the band of 8 to 11 GHz. This circuit is tuned to give optimum very high isolation and low insertion loss in 9-10 GHz frequency band. It uses one series and three shunt branches. One series and one shunt branch capacitances are resonated out with parallel inductance. This circuit is fabricated and performance measured. The measured performance of this MMIC SPDT switch has insertion loss lower than 2 dB and isolation better than 46 dB in 9-10 GHz and insertion loss lower than 2.2 dB and isolation better than 42 dB in 8-11 GHz. This circuit has to be integrated with other component to demonstrate X-band core chip.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125199551","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}
引用次数: 1
A Compact Frequency and Polarization Reconfigurable Square Patch Antenna for Wireless Communication 一种用于无线通信的紧凑型频率和极化可重构方形贴片天线
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877284
M. Saravanan, A. Priya
{"title":"A Compact Frequency and Polarization Reconfigurable Square Patch Antenna for Wireless Communication","authors":"M. Saravanan, A. Priya","doi":"10.1109/IMaRC.2018.8877284","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877284","url":null,"abstract":"A compact frequency and polarization reconfigurable antenna is presented. The antenna is based on a square-shaped radiating patch along with two parasitic strip lines fabricated on the single layer roger substrate. Pin diodes are placed between the patch and the parasitic strip line. The antenna comprises of dual port for polarization diversity and utilizes pin diodes for frequency diversity. The antenna can change at three different set of resonant frequencies along with 00 and 900 linear polarization state. The antenna operates at four different modes and achieves cross-polarization isolation of -15dB in all operating modes. The prototype is fabricated and its performances are validated using measurements.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130859354","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}
引用次数: 4
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信