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2019 IEEE Radio and Wireless Symposium (RWS)最新文献

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Beamforming and Nulling Based on a Complex Domain Frontend 基于复杂域前端的波束形成与消零
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714424
He Wang, Jun Wang, Bin Zhang, L. Ran
{"title":"Beamforming and Nulling Based on a Complex Domain Frontend","authors":"He Wang, Jun Wang, Bin Zhang, L. Ran","doi":"10.1109/RWS.2019.8714424","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714424","url":null,"abstract":"In this work, a simplified complex domain radio frequency (RF) frontend based on vector multipliers and a power detector is adopted to implement precision amplitude and phase control in a multi-channel phased array system. Assisted by this system, Monte Carlo optimizations are used to suppress interferences by the simultaneous implementation of beamforming and nulling. Simulation and experimental results obtained based on a 4element planar array verify the effectiveness of the proposed system and algorithm, and show potential applications in anti-interference wireless point-to-point communications such as satellite communications.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129712151","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
OFDM Radar with LTE Waveform: Processing and Performance LTE波形OFDM雷达:处理与性能
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714410
Carlos Baquero Barneto, L. Anttila, Marko Fleischer, M. Valkama
{"title":"OFDM Radar with LTE Waveform: Processing and Performance","authors":"Carlos Baquero Barneto, L. Anttila, Marko Fleischer, M. Valkama","doi":"10.1109/RWS.2019.8714410","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714410","url":null,"abstract":"Nokia Mobile Networks, Ulm, Germany This paper addresses the processing principles and performance of OFDM based radar, with particular focus on the LTE mobile network base-stations and the use of the LTE downlink transmit waveform for radar/sensing purposes. We specifically address the problem stemming from the unused subcarriers, within the transmit signal passband, and their impact on the frequency domain radar processing. We also formulate and adopt a computationally efficient interpolation approach to mitigate the effects of such empty subcarriers in the radar processing. We evaluate the target range and velocity estimation performance through computer simulations, and show that high-quality target detection can be achieved, with LTE waveform, when combined with the interpolation approach. Impacts of the different LTE carrier bandwidths and number of transmitted LTE sub-frames are also evaluated, together with aggregating up to 5 individual 20 MHz LTE carriers.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129569590","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: 11
Extended Ellipse-based Reconstruction Algorithm for Six-port Radar 基于扩展椭圆的六端口雷达重构算法
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714294
S. Linz, F. Lurz, R. Weigel, A. Koelpin
{"title":"Extended Ellipse-based Reconstruction Algorithm for Six-port Radar","authors":"S. Linz, F. Lurz, R. Weigel, A. Koelpin","doi":"10.1109/RWS.2019.8714294","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714294","url":null,"abstract":"This work proposes a new approach to calibrate six-port displacement sensors without the use of calibration standards or well-known target positions. The detectors’ nonlinearities can be also compensated in this one-step cali-bration. An implicit equation of a so-called squircle is used to approximate measured I/Q data of arbitrary and unknown target positions. It is demonstrated with measurement data, that the squircle is a suitable model to describe errors caused by power imbalance, crosstalk or parasitic reflections as well as detector nonlinearities.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125327275","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
W-Band CMOS Down-Conversion Mixer Using CMOS-Inverter -Based RF GM Stage for Gain and Linearity Enhancement w波段CMOS下变频混频器，利用基于CMOS逆变器的RF GM级增强增益和线性度
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714325
Yo‐Sheng Lin, K. Lan, Jin-You Liao
{"title":"W-Band CMOS Down-Conversion Mixer Using CMOS-Inverter -Based RF GM Stage for Gain and Linearity Enhancement","authors":"Yo‐Sheng Lin, K. Lan, Jin-You Liao","doi":"10.1109/RWS.2019.8714325","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714325","url":null,"abstract":"We demonstrate a W-band down-conversion mixer with CMOS-inverter-based RF transconductance (GM) stage in 90 nm CMOS. Due to the current bleeding and GM contribution of the upper PMOS transistors of the RF GM stage, a larger load resistance can be adopted and a larger GM can be obtained while keeps the same linearity. This leads to a conversion gain (CG) enhancement. In addition, the second-order term GM (${g}_{2}$) and third-order term GM (${g}_{3}$) of the main NMOS transistors of the RF GM stage can be cancelled by those of the upper PMOS transistors and the auxiliary NMOS transistors of the RF GM stage. This leads to a better linearity. The mixer consumes 4 mW and achieves CG of 13.9-17.5 dB and LO-RF isolation of 40. 6-43.5dB for frequencies of 70-100GHz. Furthermore, the mixer achieves prominent noise figure (NF) of 16.4 dB and output third-order intercept point (OIP3) of 14.1 dBm at 94 GHz. These results demonstrate that the proposed down-conversion mixer is very promising for 94 GHz image radar sensors.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123711039","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
Input-Reflectionless Out-of-Phase 3-dB Bandpass Filtering Couplers 无输入反相3db带通滤波耦合器
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8880547
R. Gómez‐García, J. Muñoz-Ferreras, D. Psychogiou
{"title":"Input-Reflectionless Out-of-Phase 3-dB Bandpass Filtering Couplers","authors":"R. Gómez‐García, J. Muñoz-Ferreras, D. Psychogiou","doi":"10.1109/RWS.2019.8880547","DOIUrl":"https://doi.org/10.1109/RWS.2019.8880547","url":null,"abstract":"A class of out-of-phase 3-dB bandpass-filtering couplers with input-reflectionless capabilities is presented. To obtain the bandpass-filter (BPF) functionality, identical BPF sections are respectively co-integrated in the coupler signal paths from the input to the direct and coupled ports. Furthermore, a resistivelyterminated bandstop-filter (BSF) section with complementary transfer function with regard to the one of the BPF section is loaded at the coupler input access. In this manner, the RF inputsignal energy that is not transmitted to the direct and coupled terminals is dissipated by the loading resistor of the BSF section. Hence, the input-reflectionless behavior is realized. Optimizationbased first-to-third-order design examples are shown. Moreover, for practical-validation purposes of this RF tri-functional device, a 2-GHz second-order microstrip prototype is built and tested.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125055600","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
Multiple Subject Respiratory Pattern Recognition and Estimation of Direction of Arrival using Phase-Comparison Monopulse Radar 基于相位比较单脉冲雷达的多主体呼吸模式识别及到达方向估计
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714272
S. M. Islam, E. Yavari, Ashikur Rahman, V. Lubecke, O. Boric-Lubecke
{"title":"Multiple Subject Respiratory Pattern Recognition and Estimation of Direction of Arrival using Phase-Comparison Monopulse Radar","authors":"S. M. Islam, E. Yavari, Ashikur Rahman, V. Lubecke, O. Boric-Lubecke","doi":"10.1109/RWS.2019.8714272","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714272","url":null,"abstract":"A scalable non-contact respiratory monitoring approach is introduced for the practical separation and recognition of multiple simultaneous human respiratory patterns, using a 24-GHz phase-comparison Monopulse radar. The proposed system demonstrates a computationally efficient phase-comparison Monopulse technique to estimate the direction of arrival (DOA) of respiratory motion signals from single and multiple subjects to determine their angular positions. Experimental results demonstrated that Monopulse radar can sense and detect three different breathing patterns (normal, fast and slow) and can estimate the angular location of a single normally breathing subject within the main beamwidth of the transceiver with an estimation accuracy of approximately 84% whereas, and almost 78% for two subjects. Based on analysis of experimental results, the estimation accuracy of phase-comparison Monopulse technique degrades with the breathing pattern deviations from nominal breathing cycle and rate (fast/slow breathing) due to reduced phase measurement accuracy for the irregular signals resulting from lower signal to noise ratios (SNR). The proposed scalable 24-GHz radar transceiver system can successfully find the direction of the human target based on recognition of respiration signals which can have potential applications in healthcare and security surveillance systems.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129978368","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: 21
Pulse Wave Velocity Detection Using a 24 GHz Six-Port Based Doppler Radar 基于24 GHz六端口多普勒雷达的脉冲波速检测
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714521
F. Michler, Kilin Shi, S. Schellenberger, B. Scheiner, F. Lurz, R. Weigel, A. Koelpin
{"title":"Pulse Wave Velocity Detection Using a 24 GHz Six-Port Based Doppler Radar","authors":"F. Michler, Kilin Shi, S. Schellenberger, B. Scheiner, F. Lurz, R. Weigel, A. Koelpin","doi":"10.1109/RWS.2019.8714521","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714521","url":null,"abstract":"The measurement of the pulse wave velocity (PWV) is an important diagnostic tool in human medicine, since it is directly related to arterial stiffness, an indicator for cardiovascular risks. This paper presents a compact 24GHz continuous wave (CW) six-port Doppler radar system, which is able to precisely measure relative distances by an interferometric approach. The system is used in combination with a switched beam antenna to monitor the pulse wave at two different measurement spots on the abdominal aorta. Based on the pulse wave’s transit time between both spots, the PWV is calculated by correlation.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131028133","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: 10
An Efficient TCAD Model for TeraFET Detectors TeraFET探测器的高效TCAD模型
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714400
Xueqing Liu, M. Shur
{"title":"An Efficient TCAD Model for TeraFET Detectors","authors":"Xueqing Liu, M. Shur","doi":"10.1109/RWS.2019.8714400","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714400","url":null,"abstract":"We present a TCAD model for AlGaAs/InGaAs and AlGaN/GaN TeraFET detectors validated in a large dynamic range. The modeling results are in good agreement with the analytical theory of the THz detection using FETs and with the experimental data for the 130 nm AlGaAs/InGaAs HFETs. The model also demonstrates the response saturation at high intensities previously observed in measurements and reveals the physics of the response saturation associated with the gate leakage. The TCAD model reveals that the gate edge engineering could be even more important for the AlGaN/GaN HFETs.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132573392","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: 6
3-D Printed RF Amplifier for Wireless Systems 用于无线系统的3d打印射频放大器
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714459
A. Paolella, Daniel Silva-Saez, D. Kozlovski, R. Even
{"title":"3-D Printed RF Amplifier for Wireless Systems","authors":"A. Paolella, Daniel Silva-Saez, D. Kozlovski, R. Even","doi":"10.1109/RWS.2019.8714459","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714459","url":null,"abstract":"This paper explores the potential of a 3-D printing technology for the development of radio frequency (RF) systems. Within this study, the design process, simulation, fabrication, and testing of a 3-D printed circuit RF amplifier will be explored. The RF amplifier circuit is fabricated using a 3-D printer capable of depositing a dielectric substrate and metal transmission lines, allowing for double-sided, multilayer circuits of high RF quality. The 3-D printed RF amplifier demonstrated performance as good as one developed with conventional manufacturing techniques up to 6 GHz limited by the active components in the amplifier circuit. The gain difference between the 3-D printed circuit and the conventionally manufactured circuit was less than 1 dB up to 4.7 GHz and less than 1.3 dB up to 6 GHz.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114255820","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 Planar Waveguide Transition and Antenna Array utilizing Low-Loss Substrate for 79 GHz Radar Applications 基于低损耗衬底的79 GHz雷达平面波导转换和天线阵列设计
2019 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2019.8714561
W. Ahmad, H. Ng, D. Kissinger
{"title":"Design of Planar Waveguide Transition and Antenna Array utilizing Low-Loss Substrate for 79 GHz Radar Applications","authors":"W. Ahmad, H. Ng, D. Kissinger","doi":"10.1109/RWS.2019.8714561","DOIUrl":"https://doi.org/10.1109/RWS.2019.8714561","url":null,"abstract":"This paper demonstrates planar designs of a microstrip-to-waveguide transition as well as a 4x1 patch antenna array at 79 GHz to investigate utilizing a new low-loss substrate material in radar applications. The planar transition enables direct surface-mounting of the standard waveguide flange without additional mechanical parts. It comprises of microstrip-to-substrate integrated waveguide (SIW) transition and SIW-WR12 transition. The patch antenna array is employed in a two-channel radar sensor where its radiation pattern is measured and verified.","PeriodicalId":131330,"journal":{"name":"2019 IEEE Radio and Wireless Symposium (RWS)","volume":"49 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115634969","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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