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

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Improved Harmonic Suppression of Class-C Power Amplifiers Using Modified Bias Lines 改进偏压线对c类功率放大器谐波抑制的影响
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118664
A. Sengupta, M. Mandal, R. Pal
{"title":"Improved Harmonic Suppression of Class-C Power Amplifiers Using Modified Bias Lines","authors":"A. Sengupta, M. Mandal, R. Pal","doi":"10.1109/IMaRC45935.2019.9118664","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118664","url":null,"abstract":"This paper presents a modified bias line for class C power amplifiers. The modification helps to obtain higher power aided efficiency (PAE) and improved harmonic suppression. A prototype fabricated at 2.4 GHz shows 12.9% improvement of PAE than a conventional one. Further, a comparison with recently published works on harmonic suppression of class C amplifiers shows 10-20 dB rejection improvement of second to sixth harmonic frequencies. Detail analysis and design steps are provided.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"45 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":"126891408","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
Frequency Reconfigurable Hexagonal Shaped Patch Antenna for WLAN Applications 用于WLAN应用的频率可重构六角形贴片天线
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118674
Ritam Gupta, Shubham Kalra, M. Nair
{"title":"Frequency Reconfigurable Hexagonal Shaped Patch Antenna for WLAN Applications","authors":"Ritam Gupta, Shubham Kalra, M. Nair","doi":"10.1109/IMaRC45935.2019.9118674","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118674","url":null,"abstract":"In this paper, a hexagonal shaped frequency reconfigurable patch antenna is proposed that can be deployed in WLAN, mobile satellite communication and radio navigation. In this reconfigurable patch antenna design, a hexagonal patch is connected to two nearby rectangular patches via PIN diodes allowing it to switch between five different frequencies( i.e., 5.27 GHz, 2.16 GHz, 5.45 GHz, 2.88 GHz and 5.76 GHz ). The proposed design provides 6.38 dBi gain and 435 MHz bandwidth when both diodes are in OFF state. Ansys HFSS is used for antenna simulation and a prototype with necessary biasing components and circuit has been fabricated and tested using Keysight Vector Network Analyzer N9925A.","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":"129183797","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 novel analog predistortion linearization technique for RF-in RF-out power amplifier RF-in - RF-out功率放大器的模拟预失真线性化新技术
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118778
Ashish Kumar, M. Rawat
{"title":"A novel analog predistortion linearization technique for RF-in RF-out power amplifier","authors":"Ashish Kumar, M. Rawat","doi":"10.1109/IMaRC45935.2019.9118778","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118778","url":null,"abstract":"Predistortion is a popular technique for the linearization of high power amplifiers. Among predistortion techniques, while digital predistortion (DPD) enjoys advantages of configurability and improved performance, analog predistortion (APD) has advantages such as lower footprint and high bandwidth operation. As baseband information is not required for APD, it finds its application in repeater systems, where incoming RF signal needs to be re-transmitted using high power amplifier. This paper presents a modified analog predistorter solution for high power amplifier, which provides better solution at lesser power back-off leading to optimum utilization of high power amplification unit.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"107 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":"124095930","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
Multi-Element Coplanar Stripline Bandpass Filters Based on Spurline Resonators 基于杂散线谐振器的多元共面带状带通滤波器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118696
G. Ponchak
{"title":"Multi-Element Coplanar Stripline Bandpass Filters Based on Spurline Resonators","authors":"G. Ponchak","doi":"10.1109/IMaRC45935.2019.9118696","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118696","url":null,"abstract":"Coplanar stripline (CPS) series connected, open circuit terminated spurline resonators are used to build and demonstrate multi-element bandpass filters. A wirebond, mode suppression technique is used to achieve good bandpass filter (BPF) characteristics with no unwanted, spurious stopbands. 1, 2, 3, 4 and 6-element BPFs are demonstrated at 4 GHz center frequency with increasing stopband roll-off, greater stopband rejection, greater than 10 dB return loss and less than 2 dB insertion loss.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"-3 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":"124111249","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
Compact 4×4 Butler Matrix in Conductor Backed CPW Technology 紧凑4×4管家矩阵在导体支持的CPW技术
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118770
A. Singh, Mrinal Kanti Mandal
{"title":"Compact 4×4 Butler Matrix in Conductor Backed CPW Technology","authors":"A. Singh, Mrinal Kanti Mandal","doi":"10.1109/IMaRC45935.2019.9118770","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118770","url":null,"abstract":"A technique to design a low loss compact Butler matrix is presented in CB-CPW technology. Compact crossovers are used for the miniaturization. A 4 × 4 Butler matrix is fabricated. It provides at least 70% size reduction than a conventional compact Butler matrix using meandered geometry. Measurement results show that the design approach presented here do not degrade frequency response of the Butler matrix.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"18 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":"128101473","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
Q-Band Solid State Power Amplifier for Space Applications 空间应用q波段固态功率放大器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118703
Tanvi Dabas, Yogita Sharma, Prolay Verma, A. Jain, Puja Srivastava, D. Singh
{"title":"Q-Band Solid State Power Amplifier for Space Applications","authors":"Tanvi Dabas, Yogita Sharma, Prolay Verma, A. Jain, Puja Srivastava, D. Singh","doi":"10.1109/IMaRC45935.2019.9118703","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118703","url":null,"abstract":"This paper describes the design and realisation of Solid State Power Amplifier (SSPA) at Q-band (38.0 - 38.15 GHz) for space applications. The SSPA is designed to provide a CW output power of 31.5 dBm at 2 dB gain compression with a large signal gain of 68 dB. The SSPA is indigenously designed & developed with first pass success and is space qualified to work over a temperature range of -5°C to +60°C. The SSPA comprises of RF section, controller section and electronic power conditioner. Output losses are minimized by using direct microstrip-to-waveguide transition at SSPA output to achieve the maximum possible RF power from single high power amplifier MMIC. The test & evaluation (T & E) of SSPA that consists of burn-in, EMI/EMC, vibration, thermovacuum & life test is successfully carried out.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"15 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":"125440619","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 Novel RF Energy Harvester 一种新型射频能量采集器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118670
D. Dawn, J. M. Patel, Mohammad Wasil Nasry, S. Hamidi
{"title":"A Novel RF Energy Harvester","authors":"D. Dawn, J. M. Patel, Mohammad Wasil Nasry, S. Hamidi","doi":"10.1109/IMaRC45935.2019.9118670","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118670","url":null,"abstract":"This paper presents a novel Radio Frequency (RF) Energy Harvester (EH) which can drive including but not limited to low power wireless sensors, implantable biomedical devices and Internet of Things (IoT) devices without the need for any external DC supply. The idea of this EH is based on combining RF rectifier circuit with the original concept of Dickson Charge Pump [1] where 180o out of phase clock signals are replaced by 180o out of phase RF signals. The complete EH needs a single RF input and converts to the desired boosted DC output voltage and drive a load. In order to verify the proof of concept a prototype is built on PCB and an LED is used as a load. Measured results show that 330µW of 900MHz RF input signal converts into 1.48V DC and which lights up an LED consuming about 22µW. These results show a potential future in implementing this EH in a fully integrated single-chip CMOS process.","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":"125712557","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
TRL Assisted Low-loss Negative-Refractive-Index Metamaterial Characterization in the Presence of Surface Effects 表面效应下TRL辅助低损耗负折射率超材料表征
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118613
K. Eccleston, I. Platt, I. Woodhead, A. Tan
{"title":"TRL Assisted Low-loss Negative-Refractive-Index Metamaterial Characterization in the Presence of Surface Effects","authors":"K. Eccleston, I. Platt, I. Woodhead, A. Tan","doi":"10.1109/IMaRC45935.2019.9118613","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118613","url":null,"abstract":"The characterization of metamaterials requires simulating or measuring samples with finite thickness. However, finite sized samples result in surface artefacts which cause an inconsistent wave-impedance to be retrieved when applying the Nicolson-Ross-Weir (NRW) method to low loss metamaterials. A method is demonstrated that uses thru-line (TL) deembedding to isolate the surface artefact allowing the NRW method to obtain consistent values of wave-impedance.","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":"121781253","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
Solar Radio Observation Using CALLISTO at the USO/PRL, Udaipur 在USO/PRL使用CALLISTO进行太阳射电观测
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118669
Kushagra Upadhyay, B. Joshi, P. Mitra, R. Bhattacharyya, D. Oberoi, C. Monstein
{"title":"Solar Radio Observation Using CALLISTO at the USO/PRL, Udaipur","authors":"Kushagra Upadhyay, B. Joshi, P. Mitra, R. Bhattacharyya, D. Oberoi, C. Monstein","doi":"10.1109/IMaRC45935.2019.9118669","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118669","url":null,"abstract":"This paper presents a detailed description of various subsystems of CALLISTO solar radio spectrograph installed at the USO/PRL. In the front-end system, a log periodic dipole antenna (LPDA) is designed for the frequency range of 40-900 MHz. In this paper LPDA design, its modifications, and simulation results are presented. We also present some initial observations taken by CALLISTO at Udaipur.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"20 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":"115799096","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
GPU accelerated FDTD based Open-source SAR Simulator 基于GPU加速FDTD的开源SAR模拟器
2019 IEEE MTT-S International Microwave and RF Conference (IMARC) Pub Date : 2019-12-01 DOI: 10.1109/IMaRC45935.2019.9118748
Vidhi Katkoria, Pratik Ghosh, B. Chaudhury
{"title":"GPU accelerated FDTD based Open-source SAR Simulator","authors":"Vidhi Katkoria, Pratik Ghosh, B. Chaudhury","doi":"10.1109/IMaRC45935.2019.9118748","DOIUrl":"https://doi.org/10.1109/IMaRC45935.2019.9118748","url":null,"abstract":"Specific Absorption Rate (SAR) is a widely used metric to measure the amount of non-ionizing EM radiation power absorbed by a unit mass of biological tissue, thus it helps in determining the safety standard of any EM applications. The 3D Finite Difference Time Domain (FDTD) is a commonly used computational technique for accurate SAR computation. However, it is computationally as well as memory intensive and requires high-performance computing(HPC) clusters to handle problems of large sizes encountered during high-frequency applications. This paper describes the implementation of a fast, optimized Open Source GPU accelerated FDTD based SAR calculator (available at Github)using CUDA (Code Unified Device Architecture) as an alternative that can be developed locally at a relatively small cost. On a testbed comprising a serial implementation on Intel i7-4790 CPU and parallel implementations on NVIDIA Tesla K40 graphics card, we have achieved a speedup of up to 45x in double precision mode. We have investigated the effect of increasing the frequency (larger problem sizes) and threads per block on speedup. Finally, we have compared the performance of our parallel implementation on two different GPUs (Tesla K40 and GTX 670) and analyzed the effect of hardware architecture on the performance of the SAR calculator.","PeriodicalId":338001,"journal":{"name":"2019 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"49 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":"130877668","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
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