Pub Date : 2022-08-12DOI: 10.1109/IWS55252.2022.9977461
Shuqin Dong, Li Wen, Changzhan Gu, Junfa Mao
Heart sounds can provide crucial information regarding cardiovascular state. While the widely used heart sound detection methods always need complex signal processing and also require contact sensors. In this work, the feasibility of contactless detection of heart sounds based on Doppler radar sensor is demonstrated through experiments. A custom-designed 24G DC-coupled continuous-wave radar sensor, ECG device and PCG sensor were simultaneously employed to verify the arguments. The experimental results validated that the proposed technique has the potential to obtain the accurate heart sounds' timing information and waveform with low sampling rate (400 Hz) which provides a convenient way to detect heart sounds during daily life.
{"title":"Contactless Detection for Heart Sounds Based on Doppler Radar Sensor","authors":"Shuqin Dong, Li Wen, Changzhan Gu, Junfa Mao","doi":"10.1109/IWS55252.2022.9977461","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977461","url":null,"abstract":"Heart sounds can provide crucial information regarding cardiovascular state. While the widely used heart sound detection methods always need complex signal processing and also require contact sensors. In this work, the feasibility of contactless detection of heart sounds based on Doppler radar sensor is demonstrated through experiments. A custom-designed 24G DC-coupled continuous-wave radar sensor, ECG device and PCG sensor were simultaneously employed to verify the arguments. The experimental results validated that the proposed technique has the potential to obtain the accurate heart sounds' timing information and waveform with low sampling rate (400 Hz) which provides a convenient way to detect heart sounds during daily life.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127187141","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977885
Q. Hu, Ke Chen, Yilin Zheng, Zhiyuan Xu, Yijun Feng
In this paper, we propose a binary amplitude-shift keying (BASK) wireless communication system based on a metasurface capable of joint modulation of amplitude and polarization. By modulating the spatial profile of the metasurface meta-atoms, we obtain different cross-polarized reflections from the metasurface that can be further dynamically tuned. As the exemplary demonstration, transmitted information is successfully recovered at the receiving terminal. Our proposed system may have further envisions in polarimetry detecting and imaging.
{"title":"Joint Modulation of Amplitude and Polarization for Metasurface-Based Wireless Communication System","authors":"Q. Hu, Ke Chen, Yilin Zheng, Zhiyuan Xu, Yijun Feng","doi":"10.1109/IWS55252.2022.9977885","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977885","url":null,"abstract":"In this paper, we propose a binary amplitude-shift keying (BASK) wireless communication system based on a metasurface capable of joint modulation of amplitude and polarization. By modulating the spatial profile of the metasurface meta-atoms, we obtain different cross-polarized reflections from the metasurface that can be further dynamically tuned. As the exemplary demonstration, transmitted information is successfully recovered at the receiving terminal. Our proposed system may have further envisions in polarimetry detecting and imaging.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129453702","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977659
H. Xiao, Yue-min Ning, Jiadong Cheng, B. Xia
A compact 1-to-4 broadband WPD is presented. By combining multi-section impedance transformation and the even-odd mode analysis of $2^{n}$ symmetric circuits, the WPD has ultra-bandwidth reflection and isolation. A detailed design procedure is elaborated to determine the impedance. A WPD is designed, simulated and fabricated in $f_{0}=10$ GHz and satisfactory agreement between simulated and measured results demonstrate the feasibility of proposed approach. The measured results show 91 % bandwidth with more than 13 dB in-band isolation and return loss at all output ports.
{"title":"A compact 1-to-4 broadband planar multi-section Wilkinson power divider","authors":"H. Xiao, Yue-min Ning, Jiadong Cheng, B. Xia","doi":"10.1109/IWS55252.2022.9977659","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977659","url":null,"abstract":"A compact 1-to-4 broadband WPD is presented. By combining multi-section impedance transformation and the even-odd mode analysis of $2^{n}$ symmetric circuits, the WPD has ultra-bandwidth reflection and isolation. A detailed design procedure is elaborated to determine the impedance. A WPD is designed, simulated and fabricated in $f_{0}=10$ GHz and satisfactory agreement between simulated and measured results demonstrate the feasibility of proposed approach. The measured results show 91 % bandwidth with more than 13 dB in-band isolation and return loss at all output ports.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"5 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120921487","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977763
L. Zhang, Xu Cheng, Jiangan Han, Yue He, Kun Huang, W. Su
A highly integrated monolithic multifunctional mixer implemented by a 130nm GaAs mHEMT process is presented in this paper. With modified on-chip Marchand baluns, double balanced diode-ring mixer with direct intermediate frequency (IF) extraction is realized. Serving as a selector for transmitting or receiving modes, the IF single pole double throw (SPDT) switch with isolation better than 55dB is demonstrated. A coupler located at the local oscillator (LO) port was also integrated on the chip for power monitoring. Measured results exhibit 6.5-10dB up-conversion loss and 8.7-12dB down-conversion loss of the mixer over the radio frequency (RF) range of 18.5-26GHz. The RF-to-IF, LO-to-IF and LO-to-RF isolations are better than 20dB, 35dB and 45dB, respectively. What's more, effects of fast neutron radiation with fluences up to 1e14/cm2 on the chip's reliability was further studied. With no performance degradation, the fabricated multifunctional mixer is applicable to various wireless and communication systems in hostile environment.
{"title":"A K-band Monolithic Multifunctional Mixer with High Reliability under Fast Neutron Radiation","authors":"L. Zhang, Xu Cheng, Jiangan Han, Yue He, Kun Huang, W. Su","doi":"10.1109/IWS55252.2022.9977763","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977763","url":null,"abstract":"A highly integrated monolithic multifunctional mixer implemented by a 130nm GaAs mHEMT process is presented in this paper. With modified on-chip Marchand baluns, double balanced diode-ring mixer with direct intermediate frequency (IF) extraction is realized. Serving as a selector for transmitting or receiving modes, the IF single pole double throw (SPDT) switch with isolation better than 55dB is demonstrated. A coupler located at the local oscillator (LO) port was also integrated on the chip for power monitoring. Measured results exhibit 6.5-10dB up-conversion loss and 8.7-12dB down-conversion loss of the mixer over the radio frequency (RF) range of 18.5-26GHz. The RF-to-IF, LO-to-IF and LO-to-RF isolations are better than 20dB, 35dB and 45dB, respectively. What's more, effects of fast neutron radiation with fluences up to 1e14/cm2 on the chip's reliability was further studied. With no performance degradation, the fabricated multifunctional mixer is applicable to various wireless and communication systems in hostile environment.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114275589","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977535
Xin Wang, Yao Li, Weihua Yu, Xin Lv
A compact D-band power amplifier (PA) is designed in $0.5mu text{mInP}$ DHBT, which consisted of a 4-way 4-stage common-emitter cell and transmission line power divider/combiner. The symmetrical T-junction transmission line also performs as an impedance match component for input and output. As shown in the post-simulation results, the 3-dB gain $mathrm{s}_{21}$ is no less than 17dB while covering 135 - 155 GHz. And the input/output return loss coefficient $mathrm{S}_{11}/mathrm{S}_{22}$ are more than 10.5 / 11.5 dB in the operation frequency, respectively. The designed PA is capable of providing 12dBm saturated output power $(P_{sat})$ at 150 GHz with a competitive power added efficiency (PAE) of 4.5%, while consuming active area of 1.5 mm2 and DC power of 0.33-W from 1-V supply.
{"title":"A Compact 4-way 4-stage 130-160GHz D-band Power Amplifier in $0.5mu mathrm{m}$ InP DHBT","authors":"Xin Wang, Yao Li, Weihua Yu, Xin Lv","doi":"10.1109/IWS55252.2022.9977535","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977535","url":null,"abstract":"A compact D-band power amplifier (PA) is designed in $0.5mu text{mInP}$ DHBT, which consisted of a 4-way 4-stage common-emitter cell and transmission line power divider/combiner. The symmetrical T-junction transmission line also performs as an impedance match component for input and output. As shown in the post-simulation results, the 3-dB gain $mathrm{s}_{21}$ is no less than 17dB while covering 135 - 155 GHz. And the input/output return loss coefficient $mathrm{S}_{11}/mathrm{S}_{22}$ are more than 10.5 / 11.5 dB in the operation frequency, respectively. The designed PA is capable of providing 12dBm saturated output power $(P_{sat})$ at 150 GHz with a competitive power added efficiency (PAE) of 4.5%, while consuming active area of 1.5 mm2 and DC power of 0.33-W from 1-V supply.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121658321","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}
This paper presents an ultra-wideband low noise amplifier (LNA) fabricated in 0.1µm GaAs pHEMT process for 5G communication application. In order to ensure unconditional stability in the wide operation frequency band, source degeneration inductances are adopted. Benefited from input and inner-stage matching networks, source degeneration and wideband design techniques, the LNA achieves a measured noise figure (NF) of 2-2.4 dB, a small signal gain higher than 21 dB, and an input 1 dB compression point (IP-1dB) of -16 dBm to -10 dBm from 23 GHz to 43 GHz. The total power consumption is 118.4 mW, and the chip area is 2.4 × 1.3mm2.
{"title":"A 23–43 GHz LNA with 2.3-dB NF in 0.1µm GaAs pHEMT Process","authors":"Leyang Huang, Zekun Li, Zuojun Wang, Peigen Zhou, Jixin Chen","doi":"10.1109/IWS55252.2022.9978042","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9978042","url":null,"abstract":"This paper presents an ultra-wideband low noise amplifier (LNA) fabricated in 0.1µm GaAs pHEMT process for 5G communication application. In order to ensure unconditional stability in the wide operation frequency band, source degeneration inductances are adopted. Benefited from input and inner-stage matching networks, source degeneration and wideband design techniques, the LNA achieves a measured noise figure (NF) of 2-2.4 dB, a small signal gain higher than 21 dB, and an input 1 dB compression point (IP-1dB) of -16 dBm to -10 dBm from 23 GHz to 43 GHz. The total power consumption is 118.4 mW, and the chip area is 2.4 × 1.3mm2.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115111806","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977778
Qianyi Guo, F. Feng, Ningning Yan, Shuxia Yan, Wenyuan Liu
A surrogate model composed of neural networks and transfer functions has been presented to execute efficient electromagnetic (EM) optimization instead of using a coarse model. It is called neuro-transfer function (neuro-TF). This paper introduces the recent advances in neuro-TF methods for electromagnetic optimization, including multifeature-assisted method and adjoint sensitivity-based method. Further speedup in EM optimization is achieved using these neuro-TF surrogate optimization methods.
{"title":"Recent Advances in Gradient-based EM Optimization using Neuro-TF Surrogate","authors":"Qianyi Guo, F. Feng, Ningning Yan, Shuxia Yan, Wenyuan Liu","doi":"10.1109/IWS55252.2022.9977778","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977778","url":null,"abstract":"A surrogate model composed of neural networks and transfer functions has been presented to execute efficient electromagnetic (EM) optimization instead of using a coarse model. It is called neuro-transfer function (neuro-TF). This paper introduces the recent advances in neuro-TF methods for electromagnetic optimization, including multifeature-assisted method and adjoint sensitivity-based method. Further speedup in EM optimization is achieved using these neuro-TF surrogate optimization methods.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124051706","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977809
Y. Meng, A. Qing
In this paper, the recently indigenously developed millimeter-wave imaging (MMWI) algoritthm GHI-LFM, namely general holographic imaging (HI) algorithm based on linear frequency modulation (LFM), is further improved by using coherence factor (CF), called GHI-LFM-CF. The new method can suppress the Gibb's effect in k-space, resulting in very clean background. The superior performance is validated by imaging using both synthetic and experimental data of benchmark objects.
{"title":"Improved GHI - LFM Algorithm Based on Coherence Factor","authors":"Y. Meng, A. Qing","doi":"10.1109/IWS55252.2022.9977809","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977809","url":null,"abstract":"In this paper, the recently indigenously developed millimeter-wave imaging (MMWI) algoritthm GHI-LFM, namely general holographic imaging (HI) algorithm based on linear frequency modulation (LFM), is further improved by using coherence factor (CF), called GHI-LFM-CF. The new method can suppress the Gibb's effect in k-space, resulting in very clean background. The superior performance is validated by imaging using both synthetic and experimental data of benchmark objects.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123073894","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977521
Yadan Zang, Yongzhong Zhu, W. Xie, Yujie Zhao
An ultra-wide angle coverage multi-beam spherical Luneburg lens antenna is proposed based on the thickness equality principle and the equivalent medium theory, with its gradient relative permittivity realized by “air-dielectric-air-dielectric” nested structure. Working in Sub-6GHz band, the simulated results show a peak gain of 15.8 dBi, the side lobe level of -12dB, and promising radiation patterns with the dual polarization scanning of $pm 90^{circ}$ in the azimuth plane and $pm 30^{circ}$ in the elevation plane, respectively. The overall performance of the prototype lens antenna demonstrates that this lens would be an attractive candidate for the wireless applications and 5G communication base stations.
{"title":"An ultra-wide-angle coverage spherical Luneburg lens antenna for high-gain communication base stations","authors":"Yadan Zang, Yongzhong Zhu, W. Xie, Yujie Zhao","doi":"10.1109/IWS55252.2022.9977521","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977521","url":null,"abstract":"An ultra-wide angle coverage multi-beam spherical Luneburg lens antenna is proposed based on the thickness equality principle and the equivalent medium theory, with its gradient relative permittivity realized by “air-dielectric-air-dielectric” nested structure. Working in Sub-6GHz band, the simulated results show a peak gain of 15.8 dBi, the side lobe level of -12dB, and promising radiation patterns with the dual polarization scanning of $pm 90^{circ}$ in the azimuth plane and $pm 30^{circ}$ in the elevation plane, respectively. The overall performance of the prototype lens antenna demonstrates that this lens would be an attractive candidate for the wireless applications and 5G communication base stations.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130962792","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977548
Xiaowen Xiong, Yuqi Chen, Zelin Zhu, Bingchen Pan, Jun Wen, Xiaonan Hui, Xianbin Yu, W. E. Sha, Shilie Zheng, Xianmin Zhang
In this paper, a structured radio beam multiplexing communication link at X-band has been demonstrated experimentally. The structured radio beam constructed by plane spiral orbital angular momentum (PSOAM) mode-group (MG) can realize the azimuthal pattern diversity, which mainly exhibits two features: the directionality and the vorticity. Benefited from spiral phase distribution similar to conventional OAM wave, the structured radio beam also possesses the orthogonality under partial arc sampling receiving (PASR) scheme. The demultiplexing process can be realized by analog phase shifting operation with a low receiving complexity. Experimental results show that two structured radio beams' channels have a good isolation of about 15 dB, which can ensure the reliable data transmission at the same time.
{"title":"Structured Radio Beam for Orthogonal Multiplexing Communication","authors":"Xiaowen Xiong, Yuqi Chen, Zelin Zhu, Bingchen Pan, Jun Wen, Xiaonan Hui, Xianbin Yu, W. E. Sha, Shilie Zheng, Xianmin Zhang","doi":"10.1109/IWS55252.2022.9977548","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977548","url":null,"abstract":"In this paper, a structured radio beam multiplexing communication link at X-band has been demonstrated experimentally. The structured radio beam constructed by plane spiral orbital angular momentum (PSOAM) mode-group (MG) can realize the azimuthal pattern diversity, which mainly exhibits two features: the directionality and the vorticity. Benefited from spiral phase distribution similar to conventional OAM wave, the structured radio beam also possesses the orthogonality under partial arc sampling receiving (PASR) scheme. The demultiplexing process can be realized by analog phase shifting operation with a low receiving complexity. Experimental results show that two structured radio beams' channels have a good isolation of about 15 dB, which can ensure the reliable data transmission at the same time.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125332109","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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