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2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)最新文献

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A broadband circuit analog absorber using resistively loaded square loops 一种使用电阻负载方形环路的宽带电路模拟吸收器
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8611010
Neha Hakla, Saptarshi Ghosh, K. V. Srivastava
{"title":"A broadband circuit analog absorber using resistively loaded square loops","authors":"Neha Hakla, Saptarshi Ghosh, K. V. Srivastava","doi":"10.1109/IMARC.2017.8611010","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8611010","url":null,"abstract":"In this paper, a polarization-insensitive broadband circuit analog (CA) absorber has been presented. The proposed structure consists of three concentric square loops printed on a dielectric substrate, which is separated from the ground plane by an air spacer. The square loops are made of resistive inks that absorb incident electromagnetic wave and exhibit −10 dB absorption bandwidth over the frequency range of 3.93−9.18 GHz. The absorption mechanism of the structure has been explained by deriving an equivalent circuit model as well as analyzing surface current distributions. Furthermore, the proposed design is fabricated using screen printing technique, whose measured result shows good agreement with the simulated response under normal incidence.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123563475","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
0.5 W Ku Band SSPA with Gain and Phase Control for Beam Forming Network 带增益和相位控制的0.5 W Ku波段SSPA波束形成网络
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449695
Pranav P. Singh, Prolay Verma, S. Srivastava, S. R. Panchal, Puja Srivastava, D. K. Singh
{"title":"0.5 W Ku Band SSPA with Gain and Phase Control for Beam Forming Network","authors":"Pranav P. Singh, Prolay Verma, S. Srivastava, S. R. Panchal, Puja Srivastava, D. K. Singh","doi":"10.1109/IMARC.2017.8449695","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449695","url":null,"abstract":"This paper presents a novel, wide band 0.5W Ku band SSPA with low amplitude and phase error and HMC based compact control circuit. A 24bit shift register with low pass filter and 24 bit GaAs FET compatible complementary output circuit is implemented in HMC. In-house developed 1 W Ku band MMIC is used as output amplifier followed by a harmonic reject filter. The implemented system achieved the above mentioned functionalities with 42 dB gain in 800 MHz bandwidth and 27 dBm output power and RS −422 Tele Command interface.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121802874","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
Electromagnetic metamaterial based sensor design for chemical discrimination 基于电磁超材料的化学识别传感器设计
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8611244
Tarakeswar Shaw, D. Mitra
{"title":"Electromagnetic metamaterial based sensor design for chemical discrimination","authors":"Tarakeswar Shaw, D. Mitra","doi":"10.1109/IMARC.2017.8611244","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8611244","url":null,"abstract":"In this paper, a simple and efficient approach is presented for the design of a metamaterial based high sensitive chemical sensor. The sensor is designed by incorporating metamaterial split ring resonator (SRR) unit cell within a small square loop. A high Quality-factor of 419 is intensifying its suitability for the sensing application and applied for chemical discrimination. The experimental results for various liquid samples such as distilled water, alcohol and acetone are discussed. Also, the measurement of these three liquid mixtures is performed. The proposed metamaterial based sensor is small in size and compact in its shape.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126016609","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: 7
TRL Calibrated Coplanar Microwave Sensor for Characterization of Biomolecules 用于生物分子表征的TRL校准共面微波传感器
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449716
A. Jha, D. Havelka, Ondrej Krivosudský, M. Cifra
{"title":"TRL Calibrated Coplanar Microwave Sensor for Characterization of Biomolecules","authors":"A. Jha, D. Havelka, Ondrej Krivosudský, M. Cifra","doi":"10.1109/IMARC.2017.8449716","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449716","url":null,"abstract":"In this paper, a coplanar microwave sensor is proposed to detect the biomolecules in aqueous solution. The proposed coplanar sensor is imprinted on the ground plane of the microstrip line, while microstrip to coplanar waveguide transition is achieved using via. The proposed design is highly compatible for study of the broadband electromagnetic properties of biological sample in the laboratory. A custom-designed thru-reflect-line approach is used for calibration of the vector network analyzer. The proposed microwave sensor is designed, fabricated and tested with various concentrations (50, 100, and 150 mg/mL) of a -amino acid viz. L-cysteine, which is an important stabilizing and redox active residue common in many proteins, in the frequency range of 500 MHz - 6.5 GHz.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130302101","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
A Compact Ultra-Wideband Conductor-Backed CPW Crossover with Improved Isolation 一个紧凑的超宽带导体支持CPW交叉与改进隔离
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449701
A. Singh, M. Mandal
{"title":"A Compact Ultra-Wideband Conductor-Backed CPW Crossover with Improved Isolation","authors":"A. Singh, M. Mandal","doi":"10.1109/IMARC.2017.8449701","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449701","url":null,"abstract":"An ultra-wideband conductor-backed coplanar waveguide (CB-CPW) crossover is presented here. Utilizing the orthogonal properties of electric fields of two perpendicular CB-CPW s, isolation characteristic of the crossover is greatly improved. At the same time, the crossover is compact and provides low insertion loss. A prototype crossover fabricated in a 20 mil thick RO4003C substrate of dielectric constant 3.55 occupies a rectangular area of 14.5×4 mm2. Measured insertion loss for both of the ports is less than 0.5 dB, return loss is less than 12.5 dB, and isolation is more than 26.5 dB over 0-14.5 GHz.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"13 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120852571","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
Active Radar Calibrator Electronics for RISAT-1 RISAT-1有源雷达校准器电子
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449672
Nidhi Singh, C. Rao, J. Dhar
{"title":"Active Radar Calibrator Electronics for RISAT-1","authors":"Nidhi Singh, C. Rao, J. Dhar","doi":"10.1109/IMARC.2017.8449672","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449672","url":null,"abstract":"This paper presents the details of design and development of Active Radar Calibrator Electronics for RISAT-1. Active Radar Calibrators are ground based point targets, having wide range of controllable and stable radar cross section in small physical size, required for active microwave imaging sensors. It is easily deployable in remote areas for the calibration of all polarization channels unlike its passive counterparts. The electronics of active radar calibrator at C-band is designed, developed and presented, having gain variability of 4dB to 45dB in steps of 1 dB and of maximum linear transmit output power of +20dBm.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130992157","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
Harmonic Suppression in an In-Line Chebyshev Bandpass Filter by Asymmetrical Perturbations 用不对称扰动抑制直线切比雪夫带通滤波器中的谐波
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449689
T. K. Das, S. Chatterjee
{"title":"Harmonic Suppression in an In-Line Chebyshev Bandpass Filter by Asymmetrical Perturbations","authors":"T. K. Das, S. Chatterjee","doi":"10.1109/IMARC.2017.8449689","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449689","url":null,"abstract":"Present article provides the design of an in-line parallel-coupled Chebyshev bandpass filter centered at 5.25GHz with a fractional bandwidth of 20% for WLAN applications. The coupled-lines are modified by asymmetric rectangular perturbations subject to strong and weak coupling. The proposed filter structure exhibits second harmonic suppression of 51dB with a size reduction of 71 % and 31% compared to conventional and folded parallel-coupled lines filters respectively.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131744486","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
Frequency Agile Monolithic Inset Fed Microstrip Patch Antenna Based on Barium Strontium Titanate (BaxSr1-xTiO3) Ferroelectric Substrate 基于钛酸锶钡(BaxSr1-xTiO3)铁电衬底的频率敏捷单片插入式微带贴片天线
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449696
Pratik Mevada, A. Sharma, S. Kulshrestha, Soumyabrata Chakrabarty, R. Jyoti
{"title":"Frequency Agile Monolithic Inset Fed Microstrip Patch Antenna Based on Barium Strontium Titanate (BaxSr1-xTiO3) Ferroelectric Substrate","authors":"Pratik Mevada, A. Sharma, S. Kulshrestha, Soumyabrata Chakrabarty, R. Jyoti","doi":"10.1109/IMARC.2017.8449696","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449696","url":null,"abstract":"This paper demonstrates frequency agile inset fed microstrip patch antenna built on Barium Strontium Titanate (BST: BaxSriXTiO3) ferroelectric substrate. Concept and design methodology of X-band frequency agile microstrip patch antenna monolithically integrated with coplanar capacitor, bias tee and DC block capacitor are discussed. Antenna design is carried out on 0.5 m thick Ba0.6Sr0.4TiO3 hosted by 1mm Quartz substrate. C-V characterization of this BST film is also performed and presented. Microstrip antenna on BST film has been realized using SolGel method and it shows 50MHz frequency tunability during measurement for bias voltage variation from OV to 154V The gain and pattern purity of the antenna is maintained over this bandwidth.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121638350","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
A Low-Cost Test Bench for the Characterization of Microwave Devices Using Modulated Envelope Signal 用调制包络信号表征微波器件的低成本试验台
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449712
Girish Chandra Tripathi, M. Rawat
{"title":"A Low-Cost Test Bench for the Characterization of Microwave Devices Using Modulated Envelope Signal","authors":"Girish Chandra Tripathi, M. Rawat","doi":"10.1109/IMARC.2017.8449712","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449712","url":null,"abstract":"Thirst for efficient design and modeling of nonlinear microwave devices require accurate characterization of devices in the presence of modulated signals. Vector network analyzer, which is used for such characterization is a costly tool. This paper presents a low-cost test bed, which can characterize the microwave devices in the presence of wideband 4G/5G signals for the measurement of harmonics as well as in-band characteristics. Example case for the second harmonic along with the fundamental signal characterization has been reported.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125990190","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
Amplitude and Phase Calibration of Antenna Arrays 天线阵列的幅度和相位校准
2017 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2017-12-01 DOI: 10.1109/IMARC.2017.8449721
Y. Vasavada, J. Reed
{"title":"Amplitude and Phase Calibration of Antenna Arrays","authors":"Y. Vasavada, J. Reed","doi":"10.1109/IMARC.2017.8449721","DOIUrl":"https://doi.org/10.1109/IMARC.2017.8449721","url":null,"abstract":"Array of antenna elements interfaced with a digital signal processor (DSP) allows powerful and flexible (adaptive) beamforming algorithms to be implemented digitally at DSP. Main requirement for preserving the objective criterion of the DSP-based beamforming algorithm is that the elemental paths between the DSP and the antenna array are balanced (calibrated) in amplitude and phase. This paper describes two schemes for solving this antenna array calibration problem. In the first scheme, which is analogous to Zero Forcing equalization approach, the calibration problem is treated separately from the beamforming. Calibration mismatches are first corrected by applying inverses of the estimated calibration offsets as calibration corrections. Subsequently, the (calibrated) antenna array is used to perform conventional beamforming. Second scheme, which is derived using Cauchy-Schwartz Inequality, treats calibration and beamforming as a joint optimization problem with the objective of maximizing the beamformer SNR instead of canceling the calibration offsets. These two methods are applied to single-user and multi-user beamforming schemes. Several specific forms of correlation matrices of the calibration variables are used for example derivations of the multi-user scheme. Closed-form expressions of the beamforming weight vectors and attained output SNR are obtained for both schemes, and these are used to compare the performance of these two schemes.","PeriodicalId":259227,"journal":{"name":"2017 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131588740","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
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