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2020 IEEE/MTT-S International Microwave Symposium (IMS)最新文献

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A Phase Analysis Method for Ferromagnetic Resonance Characterization of Magnetic Nanowires 磁性纳米线铁磁共振表征的相位分析方法
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224042
Yali Zhang, B. Garcia, J. Um, B. Stadler, Rhonda R. Franklin
{"title":"A Phase Analysis Method for Ferromagnetic Resonance Characterization of Magnetic Nanowires","authors":"Yali Zhang, B. Garcia, J. Um, B. Stadler, Rhonda R. Franklin","doi":"10.1109/IMS30576.2020.9224042","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224042","url":null,"abstract":"This paper presents a phase analysis method (PAM) in DC field domain to detect ferromagnetic resonance (FMR) properties of magnetic nanowires. The S-parameter phase is extracted, and a derivative is applied to show FMR frequencies and magnetic moment direction. A comparison between the magnitude method and PAM is made. PAM provides advantages in determining FMR frequencies for overlapped linewidths. For a two-port coplanar waveguide (CPW) test circuit, the sample placement effect is studied. The phase derivative results show consistent FMR frequencies at DC field of 0.87T for different sample placements. Similarly, three different types of nanowires, iron (Fe), cobalt (Co) and nickel (Ni) are measured and can be easily distinguished. Finally, on a one-port shorted CPW test circuit, the length effect is studied. Two nanowire chips from one sample are diced with the same width but different lengths. When compared, their FMR frequencies possess differences of 0.06T using PAM.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"8 1","pages":"968-971"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86912477","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
Microfabrication of a Miniaturized Monolithic Folded Half-Mode Integrated Waveguide Cavity for W-Band Applications 用于w波段的小型化单片折叠半模集成波导腔的微加工
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223792
Thomas R. Jones, M. Daneshmand
{"title":"Microfabrication of a Miniaturized Monolithic Folded Half-Mode Integrated Waveguide Cavity for W-Band Applications","authors":"Thomas R. Jones, M. Daneshmand","doi":"10.1109/IMS30576.2020.9223792","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223792","url":null,"abstract":"This paper presents the microfabrication of a miniaturized folded half-mode integrated waveguide cavity for operation at millimetre-wave frequencies in W-band. A half-mode cavity is wrapped around a middle metallization layer within its structure, effectively folding the fundamental resonance mode. Compared to standard rectangular waveguide cavity footprint, a miniaturization on the order of 91% is demonstrated. The folded half-mode integrated waveguide cavity has a measured resonance frequency of 87.3 GHz, and measured unloaded quality factor of 101. The fabrication process is completely monolithic, allowing for Integration with IC.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"9 1","pages":"127-130"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86207748","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: 5
Noncontact High-Linear Motion Sensing Based on A Modified Differentiate and Cross-Multiply Algorithm 基于改进微分交叉相乘算法的非接触高线性运动传感
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223896
W. Xu, Changzhan Gu, J. Mao
{"title":"Noncontact High-Linear Motion Sensing Based on A Modified Differentiate and Cross-Multiply Algorithm","authors":"W. Xu, Changzhan Gu, J. Mao","doi":"10.1109/IMS30576.2020.9223896","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223896","url":null,"abstract":"The interferometric radar sensor can wirelessly detect the relative displacement motions, owing to its inherent nature of high sensitivity to the moving objects. To overcome the phase ambiguity and discontinuity caused by non-linear phase modulation, approaches such as differentiate and cross-multiply (DACM) were proposed for linear demodulation of the vibration motions. However, the existing DACM algorithm is strongly dependent on the calibration of I/Q output signals, resulting in low tolerance to noise and inaccuracy in detecting motions of large linear displacement. Based on the differentiation and the geometrical theorem of the trigonometric functions, this paper proposes a modified DACM algorithm with simplified expression but much improved performance for high-linear motion detection. Theoretical analysis was presented to introduce the proposed algorithm. Both simulation and experimental results demonstrate that the proposed algorithm is not only free from phase ambiguity, but also superior in several aspects: the stability under a signal to noise ratio (SNR) of 25 dB has been improved by 9 dB and the linearity of measuring large displacement motion has been improved by 32 dB, comparing to the existing DACM algorithm. Moreover, the simplified expression would greatly reduce the computational resources needed for linear phase demodulation.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"41 1","pages":"619-622"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82351785","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: 12
OTA-Based Data Acquisition and Signal Separation for Digital Predistortion of Multi-User MIMO Transmitters in 5G 基于ota的5G多用户MIMO发射机数字预失真数据采集与信号分离
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223978
Xiaoyu Wang, Yue Li, Chao Yu, W. Hong, A. Zhu
{"title":"OTA-Based Data Acquisition and Signal Separation for Digital Predistortion of Multi-User MIMO Transmitters in 5G","authors":"Xiaoyu Wang, Yue Li, Chao Yu, W. Hong, A. Zhu","doi":"10.1109/IMS30576.2020.9223978","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223978","url":null,"abstract":"In this paper, a non-interruptive over-the-air (OTA) data acquisition method is presented to characterize system nonlinearity and calibrate digital predistortion (DPD) in multi-user (MU) multiple-input multiple-output (MIMO) transmitters with low hardware complexity. Based on a unified system model for fully-digital and hybrid MU-MIMO transmitters, the requirements and difficulties of data acquisition for MU-MIMO DPD are outlined first. A versatile OTA data acquisition technique, featuring a multi-observation forward modelling procedure, is thereby developed to obtain power amplifier (PA) output without interrupting the operation of the MIMO transmitters. By using this method, the output of each PA can be reconstructed instead of directly measuring each PA's output, even when the output signals of PAs are correlated. DPD can therefore be effectively constructed to mitigate the distortion. Experimental results demonstrate that the proposed approach can accurately estimate each PA output and linearize all PAs in the array.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"12 1","pages":"845-848"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84806082","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
A Silicon-Based Closed-Loop 256-Pixel Near-Field Capacitive Sensing Array with 3-ppm Sensitivity and Selectable Frequency Shift Gain 一种硅基闭环256像素近场电容传感阵列，具有3ppm的灵敏度和可选的频移增益
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224059
Jia Zhou, Chia-Jen Liang, Christopher Chen, Jieqiong Du, R. Huang, R. Al Hadi, J. Hwang, Mau-Chung Frank Chang
{"title":"A Silicon-Based Closed-Loop 256-Pixel Near-Field Capacitive Sensing Array with 3-ppm Sensitivity and Selectable Frequency Shift Gain","authors":"Jia Zhou, Chia-Jen Liang, Christopher Chen, Jieqiong Du, R. Huang, R. Al Hadi, J. Hwang, Mau-Chung Frank Chang","doi":"10.1109/IMS30576.2020.9224059","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224059","url":null,"abstract":"This paper presents a two-dimensional capacitive sensor circuit implemented in 28-nm silicon technology for material characterization. The circuit is based on a 4.5-GHz quadrature oscillator with a single inductor and distributed capacitor array with 12.6-um pitch. The 16×16 sensor array is designed with minimal signal energy loss to enable scalable designs. The quadrature oscillator is embedded in a trans-linear loop for frequency shift amplification up to 36 times with an acquisition bandwidth of 2.4 MHz. The readout time for single pixel drops below the limit set by the quantization noise floor and reaches near optimal window, while the sensor maintains a sensitivity of 3 ppm. A mixer is used to down-convert the high-frequency component to an intermediate frequency. A digital core is used to acquire and process the data.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"46 1","pages":"464-467"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91208890","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
Harmonic Micro-Doppler Detection Using Passive RF Tags and Pulsed Microwave Harmonic Radar 基于无源射频标签和脉冲微波谐波雷达的谐波微多普勒检测
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223963
Neda Nourshamsi, Cory Hilton, Stavros Vakalis, J. Nanzer
{"title":"Harmonic Micro-Doppler Detection Using Passive RF Tags and Pulsed Microwave Harmonic Radar","authors":"Neda Nourshamsi, Cory Hilton, Stavros Vakalis, J. Nanzer","doi":"10.1109/IMS30576.2020.9223963","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223963","url":null,"abstract":"A pulsed radar system and harmonic tag design for the detection of harmonic micro-Doppler signatures in cluttered environments is presented. While radio-frequency identification research has focused heavily on detection, this work uniquely focuses on measuring the tag motion based on harmonic frequency shifts. The tag retransmits the incident signal at a harmonic frequency, enabling the harmonic radar receiver to detect the frequency shift without the presence of clutter, which is confined to the fundamental frequency band. A new harmonic tag based on a wire dipole, diode, and wire-based reactive components is presented, which operates at 2.51 and 5.02 GHz frequencies. A pulsed harmonic radar is offered that is able to achieve measurements at greater distance than continuous-wave systems. We present time-frequency responses of the tag movement at a distance of 1 m to demonstrate the ability to detect object motion based on the frequency shift of the harmonic micro-Doppler response.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"15 1","pages":"1259-1262"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89653492","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: 4
Microwave Photonic Self-Adaptive Bandpass Filter and its Application to a Frequency Set-on Oscillator 微波光子自适应带通滤波器及其在频率调通振荡器中的应用
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9224074
G. Charalambous, S. Iezekiel
{"title":"Microwave Photonic Self-Adaptive Bandpass Filter and its Application to a Frequency Set-on Oscillator","authors":"G. Charalambous, S. Iezekiel","doi":"10.1109/IMS30576.2020.9224074","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9224074","url":null,"abstract":"Linear frequency networks are a class of analog systems comprising nonlinear elements but which have a linear relationship between the input and output instantaneous frequency. Examples of such networks find applications in self-adaptive bandpass filters and frequency set-on oscillators. Early implementations of these linear frequency networks were built exclusively with RF and microwave components, resulting in limited bandwidths. Here, we demonstrate their implementation with microwave photonics, which enables broader bandwidth operation with lower propagation losses (and hence longer delay lengths) for the development of, for example, high-Q set-on oscillators.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"3 1","pages":"103-106"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79467712","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
Co-Designed High-Efficiency GaN Filter Power Amplifier 协同设计高效GaN滤波器功率放大器
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223993
J. Estrada, P. de Paco, S. Johannes, D. Psychogiou, Z. Popovic
{"title":"Co-Designed High-Efficiency GaN Filter Power Amplifier","authors":"J. Estrada, P. de Paco, S. Johannes, D. Psychogiou, Z. Popovic","doi":"10.1109/IMS30576.2020.9223993","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223993","url":null,"abstract":"In this paper, we demonstrate a high-efficiency 4.7 GHz 4-W power amplifier with input and output matching networks designed as complex-impedance port filters, within a sub-6 GHz 5G band. The port impedances are determined by the load- and source-pull of a GaN HEMT for an efficiency-power tradeoff. The measured performance shows PAE=55% over a 9% fractional bandwidth, with 10 dB rejection at 4.5 and 5 GHz. Comparison with a cascaded PA-filter circuit shows 25% lower loss with a simultaneous 20% reduction in footprint.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"34 1","pages":"115-118"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77820558","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
An Integrated Full-Duplex/FDD Duplexer and Receiver Achieving 100MHz Bandwidth 58dB/48dB Self-Interference Suppression Using Hybrid-Analog-Digital Autonomous Adaptation Loops 采用混合模数自适应环实现100MHz带宽58dB/48dB自干扰抑制的集成全双工/FDD双工和接收机
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223872
Yuhe Cao, X. Cao, Hyungjoo Seo, Jin Zhou
{"title":"An Integrated Full-Duplex/FDD Duplexer and Receiver Achieving 100MHz Bandwidth 58dB/48dB Self-Interference Suppression Using Hybrid-Analog-Digital Autonomous Adaptation Loops","authors":"Yuhe Cao, X. Cao, Hyungjoo Seo, Jin Zhou","doi":"10.1109/IMS30576.2020.9223872","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223872","url":null,"abstract":"This paper presents a 1.5-to-2 GHz CMOS electrical-balance duplexer and receiver supporting both frequency-division duplexing (FDD) and in-band full-duplex (IBFD) operations. The proposed multi-tap and multi-stage RF and analog self-interference cancellation adapts itself autonomously to a time-varying channel in real time using a new on-chip hybrid-analog-digital adaptation loop. A $G_{m}-C$-based reconfigurable frequency shift is utilized to support FDD operation. In measurement, 58dB and 48dB RF/analog self-interference suppression are achieved across a 100MHz bandwidth in the IBFD and the FDD mode, respectively. Using the proposed embedded adaptation loops, <50µs adaptation is achieved without any high-speed ADC or DSP.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"41 1","pages":"1203-1206"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85541339","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: 5
Experimental Dosimetry Study of a Miniature RF Applicator Dedicated to the Evaluation of Severe RF Exposure Impact on a 3D Biological Model 用于评估严重射频暴露对3D生物模型影响的微型射频应用器的实验剂量学研究
2020 IEEE/MTT-S International Microwave Symposium (IMS) Pub Date : 2020-08-01 DOI: 10.1109/IMS30576.2020.9223806
S. Augé, A. Tamra, Lise Rigal, V. Lobjois, B. Ducommun, D. Dubuc, K. Grenier
{"title":"Experimental Dosimetry Study of a Miniature RF Applicator Dedicated to the Evaluation of Severe RF Exposure Impact on a 3D Biological Model","authors":"S. Augé, A. Tamra, Lise Rigal, V. Lobjois, B. Ducommun, D. Dubuc, K. Grenier","doi":"10.1109/IMS30576.2020.9223806","DOIUrl":"https://doi.org/10.1109/IMS30576.2020.9223806","url":null,"abstract":"The impact of RF radiation on the living constitutes a controversial topic, whereas wireless applications continue to grow drastically and our daily environment is surrounded of electromagnetic fields. In order to evaluate the potential impact of RF radiations even with severe RF exposures, it is important to conduct experiments with a very well controlled dosimetry and with calibrated RF exposure systems. In this paper, a miniature RF applicator, which enables to apply controlled electromagnetic fields radiation on micro-tissues, is introduced. An experimental method based on thermal measurements has been developed in such a micro-device to define the Specific Absorption Rate applied to micro-tissues depending on the applied power and the thermal increment in steady state. Due to miniature configuration of the applicator, a large range of SAR may be achieved in moderate thermal conditions.","PeriodicalId":6784,"journal":{"name":"2020 IEEE/MTT-S International Microwave Symposium (IMS)","volume":"42 2 1","pages":"508-511"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88175014","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
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