Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439836
P. Kurgan, S. Koziel, J. Bandler
A simple technique for fast design tuning of compact rat-race couplers is presented. Our approach involves equivalent circuit representation, corrected by nonlinear functions of frequency with coefficients extracted through nonlinear regression. At the same time, the tuning process connects two levels of coupler representation: EM simulation of the entire circuit and re-optimization of the coupler building blocks (slow-wave cells and folded transmission lines) with specifications obtained by appropriate manipulation of the corrected network model. The latter is driven by the necessity of accounting for EM cross-couplings within the coupler that result in performance degradation. Demonstration examples of a miniaturized rat-race coupler indicate that rapid and reliable design closure (at a cost of two or three coupler simulations) can be accomplished even for strong cross-couplings within the structure.
{"title":"Rapid Design Tuning of Miniaturized Rat-Race Couplers Using Regression-Based Equivalent Network Surrogates","authors":"P. Kurgan, S. Koziel, J. Bandler","doi":"10.1109/MWSYM.2018.8439836","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439836","url":null,"abstract":"A simple technique for fast design tuning of compact rat-race couplers is presented. Our approach involves equivalent circuit representation, corrected by nonlinear functions of frequency with coefficients extracted through nonlinear regression. At the same time, the tuning process connects two levels of coupler representation: EM simulation of the entire circuit and re-optimization of the coupler building blocks (slow-wave cells and folded transmission lines) with specifications obtained by appropriate manipulation of the corrected network model. The latter is driven by the necessity of accounting for EM cross-couplings within the coupler that result in performance degradation. Demonstration examples of a miniaturized rat-race coupler indicate that rapid and reliable design closure (at a cost of two or three coupler simulations) can be accomplished even for strong cross-couplings within the structure.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"28 1","pages":"101-103"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76038235","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439390
Chung-Yi Hsu, L. Hwang, Fu-Kang Wang, T. Horng
In this paper, to simultaneously address the advantages of wearable vital sign sensors such as high sensitivity, low power consumption and mobility, the proposed radar system is designed to be bistatic with a single-input multiple-output (SIMO) self-injection-locked oscillator (SILO) tag attached to the subject's chest and with a handheld receiver at a remote location. Embedded in the tag is a circularly polarized (CP) antenna for functioning the SILO and a polarization-diversity CP array antenna for transmitting the tag's output signal to the receiver for Doppler detection. Owing to polarization diversity, the tag exhibits strong immunity to the moving clutter caused by the receiver. In the experiment with a 2.4-GHz ISM band prototype, the tag delivered reliable cardiopulmonary information when there was a relative movement between the tag and the receiver.
{"title":"Wearable Vital Sign Sensor Using a Single-Input Multiple-Output Self-Injection-Locked Oscillator Tag","authors":"Chung-Yi Hsu, L. Hwang, Fu-Kang Wang, T. Horng","doi":"10.1109/MWSYM.2018.8439390","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439390","url":null,"abstract":"In this paper, to simultaneously address the advantages of wearable vital sign sensors such as high sensitivity, low power consumption and mobility, the proposed radar system is designed to be bistatic with a single-input multiple-output (SIMO) self-injection-locked oscillator (SILO) tag attached to the subject's chest and with a handheld receiver at a remote location. Embedded in the tag is a circularly polarized (CP) antenna for functioning the SILO and a polarization-diversity CP array antenna for transmitting the tag's output signal to the receiver for Doppler detection. Owing to polarization diversity, the tag exhibits strong immunity to the moving clutter caused by the receiver. In the experiment with a 2.4-GHz ISM band prototype, the tag delivered reliable cardiopulmonary information when there was a relative movement between the tag and the receiver.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"7 1","pages":"248-251"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77071855","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439360
Arash Fouladi Azarnaminy, R. Mansour
This paper presents an implementation of a tunable combline filter using varactors with active loss compensation. The use of varactors results in a compact implementation with fast and continuous tuning. The active loss compensation mechanism helps to compensate for losses generated by the tuning elements. Nonlinear performance and power handling of the tuning circuits are characterized. The filter operates at 2.5GHz with a constant absolute bandwidth of $pmb{25pm 3mathrm{MHz}}$. Measurement results demonstrate a tuning range of 100 MHz while the insertion loss remains below 0.9dB over the tuning range.
{"title":"A Combline Tunable Filter with Loss Compensation Circuit","authors":"Arash Fouladi Azarnaminy, R. Mansour","doi":"10.1109/MWSYM.2018.8439360","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439360","url":null,"abstract":"This paper presents an implementation of a tunable combline filter using varactors with active loss compensation. The use of varactors results in a compact implementation with fast and continuous tuning. The active loss compensation mechanism helps to compensate for losses generated by the tuning elements. Nonlinear performance and power handling of the tuning circuits are characterized. The filter operates at 2.5GHz with a constant absolute bandwidth of $pmb{25pm 3mathrm{MHz}}$. Measurement results demonstrate a tuning range of 100 MHz while the insertion loss remains below 0.9dB over the tuning range.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"123 2 1","pages":"1367-1369"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77450573","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439446
R. Tkadlec, G. Macchiarella
A new configuration of inline combline filter with pseudoelliptic response is presented in this paper. The proposed filter consists of transversally placed and mutually rotated com-bline resonators inside a cylindrical tube. Various filter configurations with arbitrary placed transmission zeros (TZ) can be obtained by proper resonators arrangement. Furthermore, in comparison to conventional cross-coupled filters, the proposed configuration does not require any additional coupling elements and provides more compact overall dimensions. To validate the proposed configuration a fifth-order filter with two TZ has been designed, manufactured, and measured.
{"title":"Pseudoelliptic Combline Filter in a Circularly Shaped Tube","authors":"R. Tkadlec, G. Macchiarella","doi":"10.1109/MWSYM.2018.8439446","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439446","url":null,"abstract":"A new configuration of inline combline filter with pseudoelliptic response is presented in this paper. The proposed filter consists of transversally placed and mutually rotated com-bline resonators inside a cylindrical tube. Various filter configurations with arbitrary placed transmission zeros (TZ) can be obtained by proper resonators arrangement. Furthermore, in comparison to conventional cross-coupled filters, the proposed configuration does not require any additional coupling elements and provides more compact overall dimensions. To validate the proposed configuration a fifth-order filter with two TZ has been designed, manufactured, and measured.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"110 1","pages":"1099-1102"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86221113","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439606
Thomas R. Jones, M. Daneshmand
Within this work, a novel millimeter-wave design platform is introduced, utilizing conventional microfabrication techniques to produce fully monolithic miniaturized 3D ridged half-mode waveguides. These structures offer substantial die real estate reduction compared to previously reported wafer-level waveguides, while also offering the opportunity for improvements in integration and fabrication yield. The microfabrication process flow is outlined, and a fabricated prototype is measured. A ridged half-mode waveguide is designed and fabricated with cutoff frequency of 58 GHz, for operation within E-band. The measured results show attenuation loss as low as 0.3 dB/mm, while achieving 63% miniaturization over standard rectangular monolithic 3D waveguide previously reported. Independent from the carrier substrate performance, the proposed air-filled monolithic ridged half-mode waveguide demonstrates potential to provide enhanced integration technology suitable for millimeter-wave communication.
{"title":"The Microfabrication of Monolithic Miniaturized Ridged Half-Mode Waveguides for 5G Millimeter-Wave Communication Systems","authors":"Thomas R. Jones, M. Daneshmand","doi":"10.1109/MWSYM.2018.8439606","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439606","url":null,"abstract":"Within this work, a novel millimeter-wave design platform is introduced, utilizing conventional microfabrication techniques to produce fully monolithic miniaturized 3D ridged half-mode waveguides. These structures offer substantial die real estate reduction compared to previously reported wafer-level waveguides, while also offering the opportunity for improvements in integration and fabrication yield. The microfabrication process flow is outlined, and a fabricated prototype is measured. A ridged half-mode waveguide is designed and fabricated with cutoff frequency of 58 GHz, for operation within E-band. The measured results show attenuation loss as low as 0.3 dB/mm, while achieving 63% miniaturization over standard rectangular monolithic 3D waveguide previously reported. Independent from the carrier substrate performance, the proposed air-filled monolithic ridged half-mode waveguide demonstrates potential to provide enhanced integration technology suitable for millimeter-wave communication.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"39 1","pages":"323-326"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86223214","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439244
Yu-Ming Lin, Hung-Wei Wu, Tzu-Chun Tai, C. Hung, S. Chang, Yeong-Her Wang
In this paper, we proposed the dual-band transparent antenna by using nano-structured thin film coating technology for GPS/Wi-Fi applications. The proposed nano-structured thin film structure is based on “activation” process in the fabrication flow. The activation process will transfer the nano-structure of thin film from disorder to order arrangement. Therefore, the coated thin film is having the characteristic of high transmittance and low resistivity. The proposed antenna has an operating bandwidth is found to be 1420 – 1720 MHz and 5290 – 6030 MHz. The transparent dual-band antenna can apply on the applications of 3Cs, wearable devices, and cars.
{"title":"Design of Dual-Band Transparent Antenna by Using Nano-Structured Thin Film Coating Technology","authors":"Yu-Ming Lin, Hung-Wei Wu, Tzu-Chun Tai, C. Hung, S. Chang, Yeong-Her Wang","doi":"10.1109/MWSYM.2018.8439244","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439244","url":null,"abstract":"In this paper, we proposed the dual-band transparent antenna by using nano-structured thin film coating technology for GPS/Wi-Fi applications. The proposed nano-structured thin film structure is based on “activation” process in the fabrication flow. The activation process will transfer the nano-structure of thin film from disorder to order arrangement. Therefore, the coated thin film is having the characteristic of high transmittance and low resistivity. The proposed antenna has an operating bandwidth is found to be 1420 – 1720 MHz and 5290 – 6030 MHz. The transparent dual-band antenna can apply on the applications of 3Cs, wearable devices, and cars.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"27 1","pages":"359-362"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88264320","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439349
X. Bao, I. Ocket, Ju Zheng, J. Bao, Meng Zhang, D. Kil, V. Franssens, B. Puers, D. Schreurs, B. Nauwelaers
Requiring neither labels nor complicated data processing technique, electrical techniques are very attractive and promising in biological/pharmaceutical research. Traditionally, impedance spectroscopy in the kHz frequency range is used for measuring cell growth and other dynamic cell culture responses. This paper reports, for the first time, real-time in vivo monitoring of yeast cell growth up to microwave frequencies. To validate the approach, we here report on the correlation of microwave sensing to the more commonly used approach that is based on optical absorbance. Measurements on four cell suspensions of known concentrations, and on BY 4741 cell growth are successfully performed. Although more studies are required to further understand the events recorded by the monitoring procedure, the presented measurement results suggest that the proposed real-time microwave characterization technique is a faster and noninvasive option for early cell growth detection. Moreover, it is believed that this technique can be readily extended to mammalian cells.
{"title":"Yeast Cell Growth Monitoring Using Microwave Measurements Correlated to Optical Absorbance","authors":"X. Bao, I. Ocket, Ju Zheng, J. Bao, Meng Zhang, D. Kil, V. Franssens, B. Puers, D. Schreurs, B. Nauwelaers","doi":"10.1109/MWSYM.2018.8439349","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439349","url":null,"abstract":"Requiring neither labels nor complicated data processing technique, electrical techniques are very attractive and promising in biological/pharmaceutical research. Traditionally, impedance spectroscopy in the kHz frequency range is used for measuring cell growth and other dynamic cell culture responses. This paper reports, for the first time, real-time in vivo monitoring of yeast cell growth up to microwave frequencies. To validate the approach, we here report on the correlation of microwave sensing to the more commonly used approach that is based on optical absorbance. Measurements on four cell suspensions of known concentrations, and on BY 4741 cell growth are successfully performed. Although more studies are required to further understand the events recorded by the monitoring procedure, the presented measurement results suggest that the proposed real-time microwave characterization technique is a faster and noninvasive option for early cell growth detection. Moreover, it is believed that this technique can be readily extended to mammalian cells.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"78 1","pages":"903-906"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88404931","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439474
Sih-Han Li, S. Hsu, Jie Zhang, Keh-Ching Huang
This paper presents a sub-6 GHz MMIC Doherty power amplifier (DPA) for 5G communication applications based on a $pmb{0.25-mu }mathbf{mGaN}$ HEMT process. The impedance inverter of the DPA is realized by combining a compact transmission line network with two shunt capacitors. Also, the ratio of power cells in the main and auxiliary amplifiers is optimized to achieve a high efficiency in output power back-off. The measured peak output power and $mathbf{P}_{pmb{1}mathbf{d}mathbf{B}}$ are 38.7 and 32.1 dBm, respectively at 5.9 GHz. The power-added-efficiency (PAE) at a 6-dB output power backoff is up to 49.5%.
{"title":"A Sub-6 GHz Compact GaN MMIC Doherty PA with a 49.5% 6 dB back-off PAE for 5G Communications","authors":"Sih-Han Li, S. Hsu, Jie Zhang, Keh-Ching Huang","doi":"10.1109/MWSYM.2018.8439474","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439474","url":null,"abstract":"This paper presents a sub-6 GHz MMIC Doherty power amplifier (DPA) for 5G communication applications based on a $pmb{0.25-mu }mathbf{mGaN}$ HEMT process. The impedance inverter of the DPA is realized by combining a compact transmission line network with two shunt capacitors. Also, the ratio of power cells in the main and auxiliary amplifiers is optimized to achieve a high efficiency in output power back-off. The measured peak output power and $mathbf{P}_{pmb{1}mathbf{d}mathbf{B}}$ are 38.7 and 32.1 dBm, respectively at 5.9 GHz. The power-added-efficiency (PAE) at a 6-dB output power backoff is up to 49.5%.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"8 1","pages":"805-807"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87572411","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439462
Tommaso A. Cappello, Prathamesh H. Pednekar, C. Florian, Z. Popovic, T. Barton
This work presents multi-level supply modulation of a load modulated balanced amplifier (LMBA). The RF-input LMBA employs dynamic active matching for efficient operation over an octave bandwidth. Supply modulation is a natural candidate to further enhance the back-off efficiency of this broadband amplifier due to its independence on RF carrier frequency. In the ET-LMBA prototype demonstrated here, an efficient hybrid multi-level converter (power DAC) produces supply levels from 10 to 30 V to modulate the drain of the balanced amplifier. Digital predistortion is used to linearize the ET-LMBA behavior at discrete steps and over frequency. This system is demonstrated at 2.1, 2.7 and 3.5 GHz with a 20-MHz, 10-dB PAPR signal showing composite efficiency improvement between 9 and 12 percentage points when supply modulation is employed, while maintaining linearity.
本文提出了负载调制平衡放大器(LMBA)的多级电源调制。射频输入LMBA采用动态主动匹配，在一个倍频带宽内高效运行。由于其与射频载波频率无关，因此电源调制是进一步提高该宽带放大器退退效率的自然候选。在这里展示的ET-LMBA原型中，一个高效的混合多级转换器(功率DAC)产生10到30 V的电源电平来调制平衡放大器的漏极。数字预失真用于线性化离散阶跃和过频的ET-LMBA行为。该系统在2.1、2.7和3.5 GHz的20 mhz、10 db PAPR信号下进行了演示，当采用电源调制时，复合效率提高了9到12个百分点，同时保持了线性度。
{"title":"Supply Modulation of a Broadband Load Modulated Balanced Amplifier","authors":"Tommaso A. Cappello, Prathamesh H. Pednekar, C. Florian, Z. Popovic, T. Barton","doi":"10.1109/MWSYM.2018.8439462","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439462","url":null,"abstract":"This work presents multi-level supply modulation of a load modulated balanced amplifier (LMBA). The RF-input LMBA employs dynamic active matching for efficient operation over an octave bandwidth. Supply modulation is a natural candidate to further enhance the back-off efficiency of this broadband amplifier due to its independence on RF carrier frequency. In the ET-LMBA prototype demonstrated here, an efficient hybrid multi-level converter (power DAC) produces supply levels from 10 to 30 V to modulate the drain of the balanced amplifier. Digital predistortion is used to linearize the ET-LMBA behavior at discrete steps and over frequency. This system is demonstrated at 2.1, 2.7 and 3.5 GHz with a 20-MHz, 10-dB PAPR signal showing composite efficiency improvement between 9 and 12 percentage points when supply modulation is employed, while maintaining linearity.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"1 1","pages":"304-307"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90121277","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}
Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439855
Z. Ali, N. Barbot, R. Siragusa, D. Hély, M. Bernier, F. Garet, E. Perret
This paper proposes a novel radar based approach for chipless tag discrimination. The proposed technique can be considered as a first step towards chipless authentication of manufactured products. The concept of chipless radiofrequency identification (RFID) is extended to tag discrimination, where each tag produces a unique signature that is very difficult to reproduce even if a clone of the device is made. The proposed technique, using radiofrequency (RF) electromagnetic (EM), keeps non-invasive and non-destructive. This new method to discriminate tag's RF signature is introduced based on the comparison between two resemblance metrics in the frequency domain and time domain. To calculate the resemblance between different signatures entire part of the RF signatures is exploited to utilize the maximum signals' richness. Owing to the chipless RF approach, we show that geometrical variations less than $pmb{10 mu mathrm{m}}$ (i.e., smaller than $lambda/1000$) can be detected which demonstrate the extreme sensitivity of the method.
提出了一种基于雷达的无芯片标签识别方法。提出的技术可以被认为是制造产品无芯片认证的第一步。无芯片射频识别(RFID)的概念扩展到标签识别，其中每个标签产生一个独特的签名，即使是克隆设备也很难复制。所提出的技术，使用射频(RF)电磁(EM)，保持非侵入性和非破坏性。介绍了一种基于频域和时域两种相似度度量的标签射频特征判别方法。为了计算不同签名之间的相似性，利用射频签名的整个部分来利用最大的信号丰富度。由于无芯片射频方法，我们表明可以检测到小于$pmb{10 mu mathrm{m}}$(即小于$lambda/1000$)的几何变化，这证明了该方法的极端灵敏度。
{"title":"Chipless RFID Tag Discrimination and the Performance of Resemblance Metrics to be used for it","authors":"Z. Ali, N. Barbot, R. Siragusa, D. Hély, M. Bernier, F. Garet, E. Perret","doi":"10.1109/MWSYM.2018.8439855","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439855","url":null,"abstract":"This paper proposes a novel radar based approach for chipless tag discrimination. The proposed technique can be considered as a first step towards chipless authentication of manufactured products. The concept of chipless radiofrequency identification (RFID) is extended to tag discrimination, where each tag produces a unique signature that is very difficult to reproduce even if a clone of the device is made. The proposed technique, using radiofrequency (RF) electromagnetic (EM), keeps non-invasive and non-destructive. This new method to discriminate tag's RF signature is introduced based on the comparison between two resemblance metrics in the frequency domain and time domain. To calculate the resemblance between different signatures entire part of the RF signatures is exploited to utilize the maximum signals' richness. Owing to the chipless RF approach, we show that geometrical variations less than $pmb{10 mu mathrm{m}}$ (i.e., smaller than $lambda/1000$) can be detected which demonstrate the extreme sensitivity of the method.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"12 1","pages":"363-366"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90323046","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}
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