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

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Miniaturized 3-dB Micromachined Broadband Lange Coupler On Alumina Substrate 氧化铝基板上的小型化3db微机械宽带耦合器
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877204
P. K. Shrivastava, S. Koul, M. Abegaonkar
{"title":"Miniaturized 3-dB Micromachined Broadband Lange Coupler On Alumina Substrate","authors":"P. K. Shrivastava, S. Koul, M. Abegaonkar","doi":"10.1109/IMaRC.2018.8877204","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877204","url":null,"abstract":"This work presented the fabrication and measurement of 3-dB broadband miniaturized Lange coupler on Alumina substrate. The measured results are in good agreement with the simulated ones. The fabrication steps are simple. Gold bond wires of 50 micron diameter used to connect the strips and the use of bond wires same time eliminating the need of making air-bridges that are generally used to suppress higher order modes in coplanar waveguide (CPW) and a business of some money addition to the fabrication cost thus making fabrication cheaper. Alumina (εr=9.8) substrate of 5 mil thickness used as it shows low surface loss and to achieve higher frequency it is mandatory to choose a thinner substrate (<15 mil) also to achieve realizable strip width. The fabricated coupler having area of 2mm×1.28mm.","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":"129585134","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
3D Beam-Wave Interaction Study in a Dielectric Loaded W-band Gyro-TWT using MAGIC 基于MAGIC的介质负载w波段陀螺行波管三维波束相互作用研究
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877174
Akash, M. Thottappan
{"title":"3D Beam-Wave Interaction Study in a Dielectric Loaded W-band Gyro-TWT using MAGIC","authors":"Akash, M. Thottappan","doi":"10.1109/IMaRC.2018.8877174","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877174","url":null,"abstract":"In this paper, Particle-in-Cell (PIC) simulation study of a lossy dielectric loaded gyrotron travelling wave tube (gyro-TWT) amplifier operating in W-band is presented. The RF interaction region is loaded uniformly with a lossy dielectric to attenuate the potential backward wave oscillations (BWO’s) caused by competing modes including the fundamental harmonic TE11, TE21, and second harmonic TE02 modes. The complete RF interaction circuit of gyro-TWT is simulated using 3D PIC code \"MAGIC\" to study its beam-wave interaction behaviour. The simulation predicted a peak RF power of ~190kW in a fundamental TE01 mode with a conversion efficiency of ~30% and a high gain of ~63dB for a non-spread gyrating 70kV, 9A electron beam.","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":"134160918","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
Efficient Harmonic Rectifier Circuit for Wireless Power Transfer Application 高效谐波整流电路在无线电力传输中的应用
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877138
Sandhya Chandravanshi, K. K. Katare, M. Jaleel Akhtar
{"title":"Efficient Harmonic Rectifier Circuit for Wireless Power Transfer Application","authors":"Sandhya Chandravanshi, K. K. Katare, M. Jaleel Akhtar","doi":"10.1109/IMaRC.2018.8877138","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877138","url":null,"abstract":"In this paper, a novel harvesting technique making use of the harmonic rejection filter is proposed to enhance the efficiency of conventional rectifying circuit. In order to achieve maximum RF-DC conversion efficiency, the rectifying circuit is realized using a matching unit, the conventional voltage doubler, two filters and higher order harmonic recycling unit. The voltage doubler is composed of two diodes and a chip capacitor, whereas the recycling unit is configured using the interdigital capacitor and a diode. Two harmonic rejection filters, filter-1 and filter-2 are constructed using three radial stubs with varying dimensions. Firstly, the entire circuit is designed and simulated using the ADS software and characteristics of these filters are verified through EM simulation using CST microwave studio software. In the next step, the designed circuit is fabricated on a low-cost FR-4 substrate and tested for validation of results. It is found that, at the designed frequency of 800 MHz the proposed circuit provides efficiency of 73% at 3 dBm input RF power. This efficiency is 18% higher than the efficiency obtained through conventional voltage doubler rectifying circuit and hence, the proposed rectifying circuit can potentially be used for efficient wireless power application.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"42 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":"129395930","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
3D Frequency Selective Surfaces based on Substrate Integrated Waveguide Technology 基于衬底集成波导技术的三维频率选择表面
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877264
V. K. Kanth, S. Raghavan
{"title":"3D Frequency Selective Surfaces based on Substrate Integrated Waveguide Technology","authors":"V. K. Kanth, S. Raghavan","doi":"10.1109/IMaRC.2018.8877264","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877264","url":null,"abstract":"In this paper, a novel design technique for designing 3D frequency selective surfaces (FSS) is proposed based on substrate integrated waveguide (SIW) cavity technology. The proposed design comprises of two tightly coupled FSS elements through the series of periodically spaced metallic vias which are separated a by a finite gap. The structure exhibits passbands characteristics with a relative bandwidth of 14.14%. Further, it exhibits two sharp roll-off performance characteristics on either edges of transmission frequency with two transmission zeros. The parametric study has been conducted to analyze its effect on frequency response of the structure. Furthermore, the material characteristics are derived to analyze the material behavior of the structure.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"59 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":"134011428","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
Design and Analysis of Compact Bandstop Filter using Perturbed Microstrip Line 微扰微带线紧凑型带阻滤波器的设计与分析
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877219
Deepak R, S. Menon
{"title":"Design and Analysis of Compact Bandstop Filter using Perturbed Microstrip Line","authors":"Deepak R, S. Menon","doi":"10.1109/IMaRC.2018.8877219","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877219","url":null,"abstract":"A perturbation or disturbance in the microstrip line manipulates the current flow through the transmission line thus modifying its performance as a filter. This modified microstrip line – Perturbed Microstrip Line (PMSL) provides bandstop filter characteristics in the frequency spectrum. The perturbation is provided as a Complementary Spiral Resonator (CSR). The paper includes analysis of this system and also design equations are furnished. The proposed filter is fabricated and validated for the performance.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"31 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":"121910192","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
Design of CPW-Fed Triple-Band Two-Port MIMO Antenna with U- Shaped Slot Isolation Structure for High Isolation U型槽型高隔离结构的cpw馈电三带双端口MIMO天线设计
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877330
Amit Kumar, A. Q. Ansari, B. Kanaujia, J. Kishor, Prashant Kandpal
{"title":"Design of CPW-Fed Triple-Band Two-Port MIMO Antenna with U- Shaped Slot Isolation Structure for High Isolation","authors":"Amit Kumar, A. Q. Ansari, B. Kanaujia, J. Kishor, Prashant Kandpal","doi":"10.1109/IMaRC.2018.8877330","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877330","url":null,"abstract":"A novel U-shaped slot isolation structure is placed between a two-port CPW-Fed rectangular patch antenna to reduce the mutual coupling between them. The isolation structure not only increases the minimum isolation by 5 dB but also, coverts a wideband antenna (2.22–4.86 GHz) into a dual-band (2.1–3.03 GHz and 3.45–4.97 GHz) and also helps in achieving a higher-band (7.15–7.94 GHz) due to better impedance matching. The center-to-center distance between the patch antennas is 0.35 λ0. The isolation structure consists of eight etched U-shaped slots from the metal strip of dimensions 19×41 mm2. The proposed MIMO antenna is useful in 2.4 GHz WLAN, 2.5 GHz WiMAX, as a receiver for all IEEE C-Bands and satellite communication. The prototype has been fabricated on an FR-4 substrate of dimension 90×50×0.8 mm3 having an antenna area of 0.22 $lambda _0^2$ with a maximum measured gain of 3.5 dB across the operating bands.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"6 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":"124548162","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 novel bulk micromachined RF MEMS switch with high isolation and reliability 一种新型的具有高隔离性和可靠性的大块微机械射频MEMS开关
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC45402.2018.8952069
Vishal Kumar, S. Koul, A. Basu
{"title":"A novel bulk micromachined RF MEMS switch with high isolation and reliability","authors":"Vishal Kumar, S. Koul, A. Basu","doi":"10.1109/IMaRC45402.2018.8952069","DOIUrl":"https://doi.org/10.1109/IMaRC45402.2018.8952069","url":null,"abstract":"In this paper, a novel K-band RF MEMS shunt switch fabricated on a high resistivity silicon substrate using Bulk Micro-machined technology is presented. The switch implements a novel concept of tri-layer sandwich (Insulator-Metal-Insulator) membrane which results high isolation (>45 dB) as well as lower actuation voltage of 16 Volt. The switch uses electrostatic actuation mechanism and has measured insertion loss and isolation of 1.51 dB and 47.6 dB at 23.5 GHz respectively. The switching speed of the switch is 78 μsec and repeats the same RF performance after several cycles of operation without deterioration. The switch can have applications in low voltage communication system, phased array radars system etc.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"63 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":"114260281","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
Design Approach of Inverse Magnetron Injection Gun for 240 GHz Gyrotron for Plasma Fusion 240 GHz等离子体聚变回旋管反磁控管注入枪设计方法
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877233
Arti, N. Kumar, U. Singh, A. Bera, V. Gahlaut
{"title":"Design Approach of Inverse Magnetron Injection Gun for 240 GHz Gyrotron for Plasma Fusion","authors":"Arti, N. Kumar, U. Singh, A. Bera, V. Gahlaut","doi":"10.1109/IMaRC.2018.8877233","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877233","url":null,"abstract":"Gyrotron is a high power microwave source widely used for electron cyclotron resonance heating (ECRH) and plasma stabilization through the localized current drive (CD) in the magnetically confined plasma. The magnetron injection gun is the most decisive part of any gyrotron as the RF power and efficiency of the device directly depend on the quality of gyrating electron beam. An inverse magnetron injection gun (IMIG) is designed for 240 GHz, 1MW gyrotron operated at TE46,17 mode and presented here. Selection of the inverse magnetron injection gun refers the possibility to insert the large emitter ring (for large beam current and beam radius) without increasing the bore radius of the magnet while this is not possible with conventional MIG (Magnetron Injection Gun), which further reduces the overall cost of the device. The electron beam parameters and various electrical and geometrical parameters are optimized as per the requirements at the interaction cavity. 2.5 D electron beam optics code EGUN is used to simulate the electrode geometry.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"20 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":"123380108","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-Band Wilkinson Power Divider with Port Extensions 带端口扩展的双频威尔金森功率分配器
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877364
Rahul Gupta, M. A. Maktoomi, M. Hashmi
{"title":"Dual-Band Wilkinson Power Divider with Port Extensions","authors":"Rahul Gupta, M. A. Maktoomi, M. Hashmi","doi":"10.1109/IMaRC.2018.8877364","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877364","url":null,"abstract":"This paper reports a coupled-line based dual-band Wilkinson Power Divider (WPD) with two-section transmission lines (TSTL) at all its ports. The design utilizes only one resistor as a frequency independent isolation element. The design offers its operation with good bandwidth and wide band-ratio (=f2/f1) at the two distant arbitrary frequencies. The design equations are provided to compute the design parameters. Three design examples are also tabulated in the paper with stepwise design procedure. The measurement of the fabricated prototype exhibits a good match (|Sii|>17dB, i = {1, 2, 3}), excellent isolation ((|S23|>25dB) and very good amplitude imbalance (|S21|~|S31|=0.2dB) and phase imbalance (∠S21~∠S31=2°) at both the bands. The measured results are in perfect agreement with the corresponding EM simulated results and thus validates the design.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"18 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":"115544399","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
Parametric Analysis of Reltron Modulation Cavity and Q-factor Calculation from S-parameter Reltron调制腔的参数分析及s参数的q因子计算
2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI: 10.1109/IMaRC.2018.8877349
Soumojit Shee, S. Dwivedi
{"title":"Parametric Analysis of Reltron Modulation Cavity and Q-factor Calculation from S-parameter","authors":"Soumojit Shee, S. Dwivedi","doi":"10.1109/IMaRC.2018.8877349","DOIUrl":"https://doi.org/10.1109/IMaRC.2018.8877349","url":null,"abstract":"Resonant mode frequencies, S parameters and quality factors of reltron modulation cavity are obtained through computer simulation. CST Microwave Studio and MAGIC are used to find out the mode frequencies and the results are found to be in good agreement. A parametric study is performed to observe the change in mode frequencies with cavity dimensions and to identify proper cavity parameters for achieving good mode separation. S parameters are obtained in CST frequency domain solver by using probe coupled wave ports and the quality factors are calculated thereafter from S11. Impedance locus of S11 on the Smith chart shows critical coupling near resonance.","PeriodicalId":201571,"journal":{"name":"2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)","volume":"21 5 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":"131060709","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
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