2017 IEEE MTT-S International Microwave Symposium (IMS)最新文献

{"title":"An efficient algorithm for simulation of plasma beam high-power microwave sources","authors":"D. Na, Y. Omelchenko, F. Teixeira","doi":"10.1109/MWSYM.2017.8058680","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058680","url":null,"abstract":"We discuss a new electromagnetic particle-in-cell algorithm for the simulation of Maxwell-Vlasov equations on unstructured grids. The use of discrete exterior calculus and differential forms of various degrees enables numerical charge conservation from first principles, down to the numerical precision floor. In addition, energy conservation is obtained via a symplectic field update. The algorithm is illustrated for the modeling of high-power microwave devices based on Cerenkov radiation driven by relativistic plasma beams.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"6 1","pages":"5-7"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73259532","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}

{"title":"A Mm-wave ultra-long-range energy-autonomous printed RFID-enabled van-atta wireless sensor: At the crossroads of 5G and IoT","authors":"J. Hester, M. Tentzeris","doi":"10.1109/MWSYM.2017.8058927","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058927","url":null,"abstract":"In this paper the authors report the first 5G-compatible implementation of a long-range, energy-autonomous, mm-wave RFID sensor for IoT applications. The system topology is first described, before the design and performance characterization of its constituting components, including an inkjet-printed carbon-nanotube(CNT)-based ammonia sensor, are presented. Then, the entire printed mm-wave backscatter-modulation device is tested, demonstrating a monostatic cross-polarized radar cross-section of −29dBsm, with only a 10 dB variation within the −50° to 50° interrogation angular range. The wireless ammonia sensing capabilities of the system are then demonstrated, before its detection at an ultra-long-range of 80 m is reported.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"62 1","pages":"1557-1560"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73589900","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}

{"title":"Cu/Co metaconductor based high signal integrity transmission lines for millimeter wave applications","authors":"Seahee Hwangbo, Arian Rahimi, Y. Yoon","doi":"10.1109/MWSYM.2017.8058671","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058671","url":null,"abstract":"This work reports copper/cobalt (Cu/Co) metaconductor based coplanar waveguide (CPW) transmission lines, featuring excellent signal integrity at K-bands and millimeter wave frequencies such as low conductor loss, reduced signal dispersion, and low noise figure. CPW transmission lines consisting of 10 pairs of Cu/Co thin film metaconductors with each layer thickness of 150 nm/25 nm, respectively, have been designed, fabricated and characterized. Experimental results show an RF resistance reduction of up to 50 % (Max.) in 7 GHz–32 GHz, 25.5 % delay performance improvement, and 30 % thermal noise voltage reduction compared with reference copper based CPWs. Compared with devices from other literatures, the presented device shows the best signal integrity performance in Ku, K, and Ka bands.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"77 1","pages":"707-710"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79265534","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}

{"title":"An extension of the iransverse wave formulation to model stochastic electromagnetic fields","authors":"J. Russer, M. Haider, D. Bajon, S. Wane, P. Russer","doi":"10.1109/MWSYM.2017.8058668","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058668","url":null,"abstract":"In this work we present the Correlation Transverse Wave Formulation (CTWF) method for direct computation of the auto- and cross correlation functions (ACFs and CCFs) of stationary stochastic electromagnetic fields. The transverse wave formulation, in performing a modal expansion of the electromagnetic fields in the homogeneous parts of the calculation domain and solving the near field continuity on both sides of the circuit surfaces, provides a direct derivation of the ACFs and CCFs without hypothesis on the structure of radiated fields.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"46 1","pages":"700-703"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79272721","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}

{"title":"A compact ultra-wide-band frequency divider with a locking range of 12–61 GHz with 0dBm of input power","authors":"A. Mostajeran, Mohammad Emadi, A. Cathelin, E. Afshari","doi":"10.1109/MWSYM.2017.8058747","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058747","url":null,"abstract":"A compact wide-band mm-wave frequency divider is presented. By utilizing a multi-injection scheme in a fully differential ring oscillator, a wide locking range is achieved. The multi-injection scheme is implemented such that no phase shifter is required for the optimum operation. The chip is fabricated in a 130nm BiCMOS process. The structure is compact with a core area of 0.0016 mm2. With an input power level of 0dBm a locking range of 12–61GHz (134%) with a division ratio of 2 is achieved. The divider consuming 10.4mW of DC power. To the best of our knowledge, this is the widest locking range among all the mm-wave frequency dividers.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"44 1","pages":"961-964"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79346890","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}

{"title":"GaN HEMT class-E rectifier for DC+AC power recovery","authors":"M. Ruiz, D. Vegas, J. Perez-Cisneros, J. A. García","doi":"10.1109/MWSYM.2017.8059108","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8059108","url":null,"abstract":"A 915 MHz GaN HEMT-based class-E rectifier is proposed in this paper to be used for DC+AC wireless power recovery. Taking advantage of the time reversal (TR) duality principle, the rectifier was derived from a class-E inverter, whose output network was designed for high-efficiency operation over a wide range of resistive loads. The addition of an appropriate gateside termination allows the device to be turned-on without an additional RF source for gate driving. The rectifier reduced sensitivity to load variation, as well as its capability for efficiently and linearly recovering the envelope of an AM RF excitation, were then characterized. An average efficiency of 82% has been measured for the combined RF-to-DC and RF-to-AC power conversion of a 1.6 W modulated carrier. Frequency multiplexing and frequency modulation alternatives for high-level DC+AC wireless power transmission are finally presented.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"99 1","pages":"318-321"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84471486","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}

{"title":"A study of the terahertz C-V characteristic of the Schottky barrier diode","authors":"Tianhao Ren, Yong Zhang","doi":"10.1109/MWSYM.2017.8059060","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8059060","url":null,"abstract":"In this paper, we present a concept called the terahertz C-V characteristic of the Schottky barrier diode, which is different from the conventional C-V characteristics. We have also presented a new equation to precisely describe it. The terahertz C-V characteristic has been carefully examined, first by using the measured capacitances at low frequencies and then by using a 225 GHz tripler. The results show this new concept is rational and necessary in terahertz regions. The agreement between the simulated and measured results of the 225 GHz tripler is improved by using the terahertz C-V characteristic.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"36 1","pages":"2003-2006"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79574516","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}

{"title":"A measurement-based error-vector-magnitude model to assess non linearity at the system level","authors":"Y. Rolain, M. Zyari, E. Van Nechel, G. Vandersteen","doi":"10.1109/MWSYM.2017.8058887","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058887","url":null,"abstract":"K measurement-based Error-Vector-Magnitude (EVM) extraction and modeling is proposed to obtain a least squares estimate of the EVM for a class of modulated excitation signals sharing a common probability density function (pdf) and Power Spectral Density (PSD). The method splits the influence of the linear dynamic and the nonlinear distortion on the EVM. The dependence of the EVM on the input signal power is hereby obtained. The influence of the measurement noise on the measured EVM is compensated, wrestling in a clear improvement of the measured quantity. The results are validated on measurements obtained by a Vector Signal Generator and Vector Signal Analyzer (VSG-VSA) measurement setup.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"35 1","pages":"1429-1432"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79788518","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}

{"title":"Near-field chipless RFID encoders with sequential bit reading and high data capacity","authors":"C. Herrojo, J. Mata-Contreras, F. Paredes, F. Martín","doi":"10.1109/MWSYM.2017.8058928","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058928","url":null,"abstract":"This paper presents a novel and unconventional approach for the implementation of chipless RFID systems with high data capacity, suitable for authentication and security applications. Contrarily to previous time-domain or frequency-domain chipless RFID tags, where encoding is achieved either by generating defects (reflectors) in a transmission line (producing echoes in an input pulsed signal), or by etching multiple resonators (each tuned to a different frequency) in a dielectric substrate (providing a unique spectral signature), respectively, the chipless tags proposed in this paper consist of a set of identical resonators conveniently aligned and etched (or printed) on a dielectric layer (e.g., liquid crystal polymer, paper, etc). The resonators are located at predefined equidistant positions in such a way that the presence or absence of resonators in such positions corresponds to the ‘1’ or ‘0’ logic states, respectively. The reader is simply a coplanar waveguide (CPW) transmission line fed by a harmonic signal tuned to the frequency of the resonant elements. In a reading operation, the tag must be mechanically guided and transversally displaced over the CPW, so that the resonant elements modulate the amplitude of the feeding harmonic signal (through electromagnetic coupling) as they cross the axis of the CPW transmission line. This sequential bit reading alleviates the spectral bandwidth limitations of previous multi-resonator chipless RFID tags since the resonators are all identical in the proposed encoders. Therefore, the data capacity (number of bits) can be substantially enhanced since it is only limited by the area occupied by the resonant elements. The necessary close proximity between the tag and the reader is not an issue in certain applications such as authentication and security (e.g., secure paper), where the reading distances can be sacrificed in favor of a high number of bits. The design of 10-bit encoders based on this approach, and implemented by means of S-shaped split ring resonators (S-SRRs) etched on a flexible microwave substrate, is reported. The area of the encoders is as small as 1.35 cm2. The number of bits can be significantly increased by simply adding further S-SRRs to the codes. Thus, high data capacity can be achieved without penalizing the complexity of the reader.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"52 1","pages":"1564-1567"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82258978","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}

{"title":"Enhanced vector network analyzer time domain measurement using normalized superimposition","authors":"S. Pennock, O. Abdul-Latif","doi":"10.1109/MWSYM.2017.8058836","DOIUrl":"https://doi.org/10.1109/MWSYM.2017.8058836","url":null,"abstract":"The measurement of the complex scattering parameters of a device under test (DUT) in the frequency domain using a Vector Network Analyzer (VNA) is common practice. Further investigation in the time domain is often obtained where the Inverse Fourier Transformation of the measurement results is examined. Thus, the impulse and/or step responses of the DUT can be obtained, which give another form of representation of the characteristics of the DUT. One of the main problems in this scheme is the introduction of unwanted side lobes that are caused when applying FT or IFT to measured signals that are band-limited. One technique to reduce side lobes is windowing, but this has a broadening effect on the main-lobe. The Spatially Variant Apodization (SVA) and superimposition (SI) techniques have been seen to address these issues in the past, and in this paper an enhancement to the SI technique through a normalisation process is investigated. The SI technique is seen to preserve the position, amplitude and phase of the main lobe responses from a DUT in simulated and measured data, while reducing side lobes and therefore confusion in the time domain representation of the DUT. In that sense a better approximation to the ideal impulse response of the DUT can be obtained.","PeriodicalId":6481,"journal":{"name":"2017 IEEE MTT-S International Microwave Symposium (IMS)","volume":"36 1","pages":"1255-1258"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82508222","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}