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Accuracy Considerations for CW Radar Monitoring of Respiratory Motion 连续波雷达监测呼吸运动的准确性考虑
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999973
Mohammad Shadman Ishrak, V. Lubecke
{"title":"Accuracy Considerations for CW Radar Monitoring of Respiratory Motion","authors":"Mohammad Shadman Ishrak, V. Lubecke","doi":"10.23919/apmc55665.2022.9999973","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999973","url":null,"abstract":"The efficacy of different CW Doppler radar demodulation methods has been assessed based on performance in tracking idealized chest motion induced by respiratory activities. The arctangent, DACM, and ScD methods were tested for accoupled and dc-coupled data. A 2.4 GHz quadrature radar system was used to measure sinusoidal modeled chest motion produced using a mechanical mover. Based on the tracking of average rate, Pearson Correlation coefficient, and peak displacement, arctangent successfully performed both rate measurement and displacement tracking. DACM and ScD were sufficient for respiratory rate measurement but not for real-time displacement tracking.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"17 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123032006","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
SIC-MIMO Systems with Neural Networks in OFDM-Based WDM VLCs 基于ofdm的WDM VLCs中的神经网络SIC-MIMO系统
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999949
Naoki Umezawa, S. Oshiba
{"title":"SIC-MIMO Systems with Neural Networks in OFDM-Based WDM VLCs","authors":"Naoki Umezawa, S. Oshiba","doi":"10.23919/apmc55665.2022.9999949","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999949","url":null,"abstract":"In this paper, we describe a wavelength-division multiplexing visible light communication system using two colored light-emitting diodes (LEDs) with similar emission wavelengths. A method using a neural network to cancel the intercolor interference caused by the spectral overlap of LEDs is proposed. The experimental results demonstrate that signal separation is possible with a bit error rate comparable to that of the pilot-based method.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114550957","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
Over-the-Air Near-Field Test of Antenna Array Using Harmonic Probes on Dielectric Strip Waveguide 介质条波导上谐波探头天线阵列的空中近场测试
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999877
Athanasios Papanikolaou, J. Hesselbarth, José Moreira
{"title":"Over-the-Air Near-Field Test of Antenna Array Using Harmonic Probes on Dielectric Strip Waveguide","authors":"Athanasios Papanikolaou, J. Hesselbarth, José Moreira","doi":"10.23919/apmc55665.2022.9999877","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999877","url":null,"abstract":"A method for testing radiators in an antenna array is presented, which is comparatively simple and allows for parallelization of per-element tests. Diode-loaded dipoles are placed on dielectric waveguide in the near-field of the radiators. The probed signal is frequency-doubled by the diode and then guided by the waveguide to receivers at the strip ends. A proof-of-concept prototype is presented, using patch radiators at 10 GHz and frequency-doubling towards 20 GHz. Measurements show minor influence of the probing setup on the radiators and localization of the active radiator being possible from received signals at both ends of the dielectric waveguide.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129952875","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
A 3.5-GHz 6-Bit CMOS Vector-Summing Phase Shifter with Low Phase and Amplitude Errors Using Area-Resizing Technique 基于面积调整技术的3.5 ghz 6位CMOS矢量和移相器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999777
Chia-Wei Hsu, Jia‐Shiang Fu
{"title":"A 3.5-GHz 6-Bit CMOS Vector-Summing Phase Shifter with Low Phase and Amplitude Errors Using Area-Resizing Technique","authors":"Chia-Wei Hsu, Jia‐Shiang Fu","doi":"10.23919/apmc55665.2022.9999777","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999777","url":null,"abstract":"For a vector-summing phase shifter (VSPS), if the gain of its variable gain amplifiers (VGAs) can be adjusted with fine resolution, low phase and amplitude errors can both be achieved. By adopting area-resizing technique for the design of the VGAs, a 6-bit VSPS is realized using a 0.18-µm CMOS process. Measurement results of the phase shifter show that the RMS phase error is less than 3° and the RMS amplitude error is less than 0.4 dB for more than 2:1 bandwidth.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129005218","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
Improvement of Broadband Folded Long-Hexagon Antenna for EMI Measurements 用于电磁干扰测量的宽带折叠长六边形天线的改进
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999991
Keita Kobayashi, S. Ishigami, K. Kawamata, K. Harima, Shingo Inori
{"title":"Improvement of Broadband Folded Long-Hexagon Antenna for EMI Measurements","authors":"Keita Kobayashi, S. Ishigami, K. Kawamata, K. Harima, Shingo Inori","doi":"10.23919/apmc55665.2022.9999991","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999991","url":null,"abstract":"In this paper, an improved folded long-hexagon antenna was introduced. The voltage standing wave ratio (VSWR), the complex antenna factor, and the absolute gain for the improved antennas were measured up to 40 GHz. These results show that the usable frequencies of the improved antennas were from 480 MHz to 40 GHz.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129249056","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
Modeling of Quad-Parallel Bipolar Transistors in the 300 GHz Band 300 GHz频段四并联双极晶体管的建模
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999724
Minami Nasu, S. Hara, A. Kasamatsu, Y. Umeda, K. Takano
{"title":"Modeling of Quad-Parallel Bipolar Transistors in the 300 GHz Band","authors":"Minami Nasu, S. Hara, A. Kasamatsu, Y. Umeda, K. Takano","doi":"10.23919/apmc55665.2022.9999724","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999724","url":null,"abstract":"In this study, we develop a model of quad-parallel bipolar transistors for the 300-GHz band in 0.13 µm SiGe BiCMOS technology. We also propose a simple modeling method for a bias-variable macro model. A four-stage power amplifier in the 300-GHz band is fabricated to validate the created model, and it is shown that simulation results using the created model agrees well with the measured results.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129303073","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
Circuit Modeling of Wireless Power Transfer Systems Using Impedance Expansion Method (Invited Paper) 基于阻抗展开法的无线电力传输系统电路建模(特邀论文)
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000049
N. Haga, J. Chakarothai, K. Konno
{"title":"Circuit Modeling of Wireless Power Transfer Systems Using Impedance Expansion Method (Invited Paper)","authors":"N. Haga, J. Chakarothai, K. Konno","doi":"10.23919/apmc55665.2022.10000049","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000049","url":null,"abstract":"The impedance expansion method (IEM) is a circuit modeling technique based on the method of moments. The IEM has been extended mainly for application to wireless power transfer systems. For example, the IEM has been extended to consider the presence of perfectly conducting and dielectric/magnetic scatterers. This paper introduces the basic concept, theoretical extension, and recent application of the IEM.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129636196","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
Gyrotropy Supported Wave Propagation in Antiferromagnets 反铁磁体中的陀螺支持波传播
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999929
R. Sen, S. Pendharker
{"title":"Gyrotropy Supported Wave Propagation in Antiferromagnets","authors":"R. Sen, S. Pendharker","doi":"10.23919/apmc55665.2022.9999929","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999929","url":null,"abstract":"Antiferromagnets, unlike conventional ferromagnets, can have all the diagonal terms distinct in the permeability tensor, giving rise to diverse topologies of isofrequency surfaces over the frequency spectrum. Interestingly, antiferromagnets have all the diagonal permeability terms as negative over a narrow frequency band. Our work shows the existence of a gyrotropy-supported propagating mode, even when all the permeability terms are negative. We investigate the photonic-spin profile of this gyrotropy-supported mode over the isofrequency surface. Further, we consider an antiferromagnet-filled waveguide and show an asymmetric photonic-spin profile with an asymmetric offset in the Poynting vector for forward and backward propagating modes.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123903305","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
Efficacy of Transmission Poles Characteristics on K-Band VCOs Phase Noise Reduction 传输极特性对k波段VCOs相位降噪的影响
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999956
Nusrat Jahan, A. Barakat, R. Pokharel
{"title":"Efficacy of Transmission Poles Characteristics on K-Band VCOs Phase Noise Reduction","authors":"Nusrat Jahan, A. Barakat, R. Pokharel","doi":"10.23919/apmc55665.2022.9999956","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999956","url":null,"abstract":"In this paper, effectiveness of multi-resonance around the parallel resonance of an LC-tank circuit on the reduction of K-band Voltage-Controlled Oscillators (VCOs) phase noise is proposed. The skirt characteristics of the Scattering $(vert mathrm{S}vert)$ parameters of the resonators is sharpened by introducing transmission poles beside the parallel resonance of the LC-tank circuit. In return, an enhanced the resonator loaded quality (Q) factor without compromising the unloaded Q-factor is obtained. Three designs are realized, verified and compared to the others in a differential VCO topology and the phase noise reduction in post-layout simulations is confirmed. Finally, two chips are fabricated in $0.18-upmu mathrm{m}$ CMOS technology and measured.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194297","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
Microwave Field Visualizing Sensors for Microwave Processing 微波处理用微波场可视化传感器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999841
Y. Nikawa
{"title":"Microwave Field Visualizing Sensors for Microwave Processing","authors":"Y. Nikawa","doi":"10.23919/apmc55665.2022.9999841","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999841","url":null,"abstract":"In the field of microwave processing, the characteristics of processing applicator to radiate microwave energy to the material change largely and this cause to reduce absorbing power to the processing material and to reduce the efficiency of the applicator. In this study, a microwave visualizing devices with temperature measuring function of the heating medium have been developed. The device is activated by magnetic field of microwave field energy. The energy converting devices which installed temperature sensor can visualize temperature with microwave magnetic field strength inside microwave processing medium. Furthermore, the application of energy converting devices are applicable to realize hybrid energy irradiation system in microwave power application.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238154","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
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