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2019 IEEE MTT-S International Microwave and RF Conference (IMARC)最新文献

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Modeling the Interference between 5G and Satellite Services in 3.4 GHz Band 3.4 GHz频段5G与卫星业务的干扰建模
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118684
Tushar Golani, R. D. Koilpillai, Babu Narayanan K J
{"title":"Modeling the Interference between 5G and Satellite Services in 3.4 GHz Band","authors":"Tushar Golani, R. D. Koilpillai, Babu Narayanan K J","doi":"10.1109/IMaRC45935.2019.9118684","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118684","url":null,"abstract":"Spectrum for satellite services are likely to overlap with the ITU 5G spectrum. Critical satellite services may be impacted due to interference between various communication links working in the same frequency band. The worst-case interference scenario between Mobile Base Station (BS) and Satellite Earth Station (ES) is evaluated. Recommendation for path loss for 3.4 GHz operations are given based on ITU-R P.1546-5. Simulations are parameterized by ES height, BS height, terrain, time-variability and location-variability.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121407114","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
GaN Based S-Band 500W Solid State Power Amplifier (SSPA) Module for Troposcatter Communications 基于GaN的s波段500W固态功率放大器(SSPA)对流层散射通信模块
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118681
S. Singh, L. Suthar, Rajendra Singh, Ashok Kumar
{"title":"GaN Based S-Band 500W Solid State Power Amplifier (SSPA) Module for Troposcatter Communications","authors":"S. Singh, L. Suthar, Rajendra Singh, Ashok Kumar","doi":"10.1109/IMaRC45935.2019.9118681","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118681","url":null,"abstract":"S-Band Troposcatter communication requires a linear high power 2 kW SSPA. The desired SSPA needs to be realized by phase combining 500 W Power Amplifier Modules (PAMs). The paper provides the design and development of a GaN based wideband Solid State Power Amplifier (SSPA) PAM module with RF output 500 watts or +57dBm. The system utilizes modular design approach using 300W SSPA Pallet as the basic building block. The amplifier device Cree GaN HEMT CGH21240F, in class-AB bias, was selected for realization of basic amplifier. The I/p and O/p matching circuits were designed and simulated in ADS software. 30 mil Rogers RO4350 substrate was used for fabrication of PCBs. The output RF power up to +57 dBm and good linearity with Power Added Efficiency (PAE) around 40 percent was achieved.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126058841","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
Improving Measurement Geometry for Accurate Classification of Scattered Field data 改进测量几何结构，实现散射场数据的精确分类
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118697
A. Kadian, K. Khare, T. Gandhi
{"title":"Improving Measurement Geometry for Accurate Classification of Scattered Field data","authors":"A. Kadian, K. Khare, T. Gandhi","doi":"10.1109/IMaRC45935.2019.9118697","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118697","url":null,"abstract":"We study the problem of object recognition/ classification using microwave scattering by examining the non-redundant information content in the scattered field data. A broad synthetic forward data is generated using the finite-difference frequency-domain (FDFD) method. A simple correlation coefficient based (CCB) measure is introduced to examine the diversity in the measured data from objects of different shapes and dielectric permittivity. This scattered data is further fed directly to a support vector machine (SVM) for binary classification. The classification results are seen to be consistent with what is expected from the CCB analysis. It is observed that the near-field scattering information is much richer and more suitable for accurate machine-based classification as compared to the far-field information in the presence of noise. The proposed scheme is promising in providing valuable insights on improving the measurement set up so that the sensed data becomes amenable for machine learning.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131492088","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
Input/Output System for Millimeter Wave Gyro-TWT 毫米波陀螺行波管的输入/输出系统
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118739
Akash, M. Thottappan
{"title":"Input/Output System for Millimeter Wave Gyro-TWT","authors":"Akash, M. Thottappan","doi":"10.1109/IMaRC45935.2019.9118739","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118739","url":null,"abstract":"In this paper, an input coupler and an output window for TE01 mode millimeter wave gyro-TWT is presented. A 5-slots wrap around mode convertor for converting a rectangular TE10 to circular TE01 mode along with the pill-box window is discussed. The pill-box window is used to seal the vacuum inside the gyro-TWT at the input end. The design of the input coupler is optimized by numerical simulation using CST to get minimum reflections, maximum transmission with large bandwidth and high mode purity. The CST simulation results predict that the input coupler offers a good transmission (> -0.5 dB) and low reflection (< - 32 dB) at the operating frequency of 92 GHz. Further, a three-disc output window is designed and simulated to seal the vacuum inside the gyro-TWT at the output end. The ceramic material Al2O3 due to its high mechanical strength is used. The output window has a reflection coefficient less than -15 dB for 85 – 100 GHz bandwidth.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115162680","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
Role of Material on the Performance of Multi-stage Depressed Collectors 物料对多级压抑集热器性能的影响
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118752
A. Latha, V. Gahlaut, Nalini Pareek, S.K. Ghosh
{"title":"Role of Material on the Performance of Multi-stage Depressed Collectors","authors":"A. Latha, V. Gahlaut, Nalini Pareek, S.K. Ghosh","doi":"10.1109/IMaRC45935.2019.9118752","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118752","url":null,"abstract":"Travelling Wave Tubes (TWTs) are microwave amplifiers that are capable of offering wideband operation and high efficiency. Multi-stage depressed collectors (MDCs) are used to enhance the efficiency of the TWT. The performance of the MDC is highly dependent on the right selection of materials for its electrodes and insulators. Basis for selection is determined by several factors like: (i) electrical, (ii) thermal, (iii) structural, and (iv) weight. Potential materials that can be used for the electrode and insulator, are extensively studied based on several criteria, which would in turn help other researchers in their material selection process.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123627215","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
Dual Cavity Arletron 双腔Arletron
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118732
Prabhakar Tripathi, Arjun Kumar, S. Dwivedi, P. K. Jain
{"title":"Dual Cavity Arletron","authors":"Prabhakar Tripathi, Arjun Kumar, S. Dwivedi, P. K. Jain","doi":"10.1109/IMaRC45935.2019.9118732","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118732","url":null,"abstract":"In dual cavity arletron, we put an extra modulation cavity just after the first modulation cavity to enhance the beam current modulation. This dual modulation cavity with the post-acceleration voltage allows creating a very dense electron bunches. The dual cavity arletron has been designed with the CST Microwave Studios. The hot (particle-in-cell) simulation has been carried out and a simulation result predicts that the device is capable to generate a microwave peak power of 950MW, which is 250 MW greater than the reported single cavity arletron. The total output of microwave power yielding a power gain of 1.38.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126196475","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
A Broadband Doherty Power Amplifier Using Class B/J Continuum 采用B/J类连续体的宽带多尔蒂功率放大器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118715
Sujata Ghosh, K. Rawat
{"title":"A Broadband Doherty Power Amplifier Using Class B/J Continuum","authors":"Sujata Ghosh, K. Rawat","doi":"10.1109/IMaRC45935.2019.9118715","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118715","url":null,"abstract":"This brief presents implementation of a broadband Doherty power amplifier with enhanced performance in terms of bandwidth and efficiency. The bandwidth enhancement is achieved by incorporating continuous class B/J mode in designing main power amplifier of the architecture. A novel broadband combiner has been proposed in this paper. It takes care of the non-infinite impedance of the auxiliary power amplifier such that the back-off load trajectory of main power amplifier matches with that of class B/J continuum. The proposed theory is validated with a 20W Doherty power amplifier designed at 1.725 GHz. The measured results show that the circuit gives 45%-53% drain efficiency around 6-7 dB back-off, where, around 55% fractional bandwidth is achieved. The circuit also qualifies the spectral mask when characterized with a single carrier 5 MHz modulated signal.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126291720","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
High Amplitude sharp pulse Generation using Step recovery diode for Radar Applications 雷达应用中使用步进恢复二极管产生高幅度锐脉冲
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118740
Mayank Vishwakarma, Harikrishna A
{"title":"High Amplitude sharp pulse Generation using Step recovery diode for Radar Applications","authors":"Mayank Vishwakarma, Harikrishna A","doi":"10.1109/IMaRC45935.2019.9118740","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118740","url":null,"abstract":"High Amplitude sharp Gaussian pulses are the key exciting sources in imaging radars to achieve good range and high resolution in thick and lossy mediums. In this paper, a new method of generating high amplitude gaussian and gaussian monocycle pulses using BJT based driver circuit and Step Recovery Diode based pulse sharpener is reported. Measured pulses from the proposed generator have peak amplitude of 15V and pulse width of 500ps.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126059075","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
Optimization techniques for hyperthermia treatment planning of breast cancer: A comparative study 乳腺癌热疗计划的优化技术:一项比较研究
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118678
Divya Baskaran, K. Arunachalam
{"title":"Optimization techniques for hyperthermia treatment planning of breast cancer: A comparative study","authors":"Divya Baskaran, K. Arunachalam","doi":"10.1109/IMaRC45935.2019.9118678","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118678","url":null,"abstract":"This paper compares five different optimization techniques for hyperthermia treatment planning (HTP) of breast cancer in terms of their ability to focus the specific absorption rate (SAR) in tumor and to reduce the hotspots in healthy tissues. Simulation results indicate that particle swarm optimization (PSO) and genetic algorithm (GA) outperformed other algorithms and produced the least hotspot to quotient ratio (< 0.99) and confined SAR in the tumor. The average SAR in the tumour provided by GA is 65% higher than PSO. Hence, it is concluded that GA can be explored as the optimization technique for HTP of breast cancer.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126581433","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: 6
A 900/1900-MHz Band-Switchable CMOS Power Amplifier 900/1900兆赫频带可切换CMOS功率放大器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118692
S. Hamidi, D. Dawn
{"title":"A 900/1900-MHz Band-Switchable CMOS Power Amplifier","authors":"S. Hamidi, D. Dawn","doi":"10.1109/IMaRC45935.2019.9118692","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118692","url":null,"abstract":"This paper presents a band-switchable RF power amplifier (PA) fully-integrated in 130nm CMOS process. A two-stage power amplifier with switchable input and output matching networks is designed in order to tune the center frequency in use. The proposed CMOS PA can operate at 900MHz and 1900MHz as lower and higher operating bands, respectively. Thus, Long Term Evolutionadvanced (LTE-a) and quad-band GSM standards for cellular applications can be covered. As a result, the designed band-switchable power amplifier obtains small-signal gain (S21) of 31.2dB/32.0dB, saturated output power (Psat) of 22.72dBm/ 23.36dBm, and power added efficiency (PAE) of 23.0%/ 26.5% at the lower and higher frequency bands, respectively, showing promising advancement compared to the state-of-the-art.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126886758","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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