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2022 Asia-Pacific Microwave Conference (APMC)最新文献

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Extraction of Vital Signs from FMCW Millimeter Wave Radar Based on All-phase FFT 基于全相位FFT的FMCW毫米波雷达生命体征提取
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999790
Xin Liu, Xiuping Li, Jianpeng Wang
{"title":"Extraction of Vital Signs from FMCW Millimeter Wave Radar Based on All-phase FFT","authors":"Xin Liu, Xiuping Li, Jianpeng Wang","doi":"10.23919/apmc55665.2022.9999790","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999790","url":null,"abstract":"This paper focus on the application of all-phase fast fourier transform(apFFT) for noncontact vital signs based on frequency modulated continuous wave(FMCW) radar. The principle of FMCW using fast fourier transform(FFT) to extract phase is briefly described. A more accurate vital sign extraction algorithm based on apFFT is proposed and compared with traditional FFT. The experimental results demonstrate that when the planar target produces an unavoidable random body movement(RBM), apFFT is better than FFT in extracting vital sign signals.","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":"116127858","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 CMOS Switchable Diode-Feeding Rectifier with Load Modulation for Wireless Power Range Extension 一种用于无线功率范围扩展的带负载调制的CMOS可切换二极管馈电整流器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999829
Chun-An Lu, Po-Hsun Chu, Y. Liao
{"title":"A CMOS Switchable Diode-Feeding Rectifier with Load Modulation for Wireless Power Range Extension","authors":"Chun-An Lu, Po-Hsun Chu, Y. Liao","doi":"10.23919/apmc55665.2022.9999829","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999829","url":null,"abstract":"This work presents a wide-input-range diode-feeding rectifier to achieve a stable and high-efficiency power supply. By changing the number of diodes, the rectifying transistors are biased to achieve optimal power conversion efficiency over a wide input power range. Furthermore, the load modulator for balancing power between the input and output of the rectifier is implemented using a switched-capacitor circuit. The chip was fabricated in a 180 nm CMOS process. The measured peak efficiency of the proposed RF power management circuit is 48% at a load of $22 mathrm{k}Omega$, and the high-efficiency range $(mathbf{efficiency} > 20%)$ is approximately 15 dB. The sensitivity at an open load is −14 dBm at an output voltage of 1 V. With load modulation, the efficiency improves by about 11% at a low load current.","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":"121466047","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 Planar Microstrip TM0 Mode Launcher for Single Conductor Transmission Line 用于单导体传输线的平面微带TM0模式发射器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999931
S. Yadav, Ashish Chittora
{"title":"A Planar Microstrip TM0 Mode Launcher for Single Conductor Transmission Line","authors":"S. Yadav, Ashish Chittora","doi":"10.23919/apmc55665.2022.9999931","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999931","url":null,"abstract":"In this paper, a novel TM0 mode launcher is presented for surface wave excitation on a single conductor line (SCL). The launcher is designed at 2.7 GHz frequency with planar microstrip technology on an FR4 substrate. Experimental results of the fabricated prototype validate the design and its simulated results. Peak of the measured S21-parameter is observed at -5.5 dB with 100 cm separation between the launchers. A path loss of 1 dB/m and back-to-back isolation of - 23 dB is observed. The launcher is compact (7 cm*7 cm), easy to manufacture and install on existing infrastructure for power line communication.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"23 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":"125947198","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 A Tunable Dualband Microstrip Bandstop Filter 一种可调谐双带微带带阻滤波器的设计
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999899
Ching‐Wen Tang, Yang-Hsin Fan
{"title":"Design of A Tunable Dualband Microstrip Bandstop Filter","authors":"Ching‐Wen Tang, Yang-Hsin Fan","doi":"10.23919/apmc55665.2022.9999899","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999899","url":null,"abstract":"In this paper, a microstrip bandstop filter with dual stopbands and tunable function is provided. In order to realize dual stopbands, two shunt-connected coupled lines and T-type transmission line are adopted with parallel connection. Moreover, the bandwidths of dual stopbands can be controlled with opposite sizes by tuning the varactors' voltage. An example of dualband bandstop filter is designed at the central frequency of 2 GHz, and fabricated on the subtract Rogers RO4003C. Moreover, the measured results match well with the theoretical simulation.","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":"130852774","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
Microwave and Millimeter-Wave Radar Circuits for the Next Generation Contact-Less In-Cabin Detection 用于下一代非接触式舱内检测的微波和毫米波雷达电路
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999764
E. Cardillo, Luigi Ferro, Changzhi Li
{"title":"Microwave and Millimeter-Wave Radar Circuits for the Next Generation Contact-Less In-Cabin Detection","authors":"E. Cardillo, Luigi Ferro, Changzhi Li","doi":"10.23919/apmc55665.2022.9999764","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999764","url":null,"abstract":"Modern cars are always better equipped with advanced driver-assistance systems (ADAS) to help the driver and the passengers in many activities related to both the safety and the infotainment sphere. The present contribution gives an insight on the current radar technology and on the future challenges for the next generation in-cabin detection systems. Different case studies will be investigated, i.e., concerning passenger presence detection, inattentive driver behavior and touch-free infotainment system control. An experimental analysis is carried out inside a car to demonstrate the feasibility of the proposed solution. To this purpose, a 24-GHz radar board has been designed and realized with in-house laboratory facilities.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"6 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":"129889584","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
Conformal and Highly Compact Wi-Fi 6E Antenna for Laptop Applications 用于笔记本电脑应用的保形和高度紧凑的Wi-Fi 6E天线
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999900
M. Idrees Magray, Saou‐Wen Su
{"title":"Conformal and Highly Compact Wi-Fi 6E Antenna for Laptop Applications","authors":"M. Idrees Magray, Saou‐Wen Su","doi":"10.23919/apmc55665.2022.9999900","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999900","url":null,"abstract":"A conformal and yet highly compact Wi-Fi 6E antenna is proposed for laptop applications. A planar topology is first utilized that is later conformed for achieving highly compact antenna structure. The conformal antenna geometry occupies a minimal area of $boldsymbol{9.5times 4.7}$ mm2. A thin FR4 substrate of thickness 0.2 mm is used to achieve conformity. The antenna consists of a meandered monopole strip capacitively coupled for exciting the $boldsymbol{lambda/4}$ resonant mode in the 2.4 GHz band. A rectangular loop is also connected to the monopole strip for the excitation of the $boldsymbol{lambda/2}$ loop resonant mode in the 5 GHz band. The L-shaped coupling trace produces the $boldsymbol{lambda/4}$ monopole resonant mode in 6 GHz band. The antenna may be the first conformal design for laptops.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"122 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":"130079064","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
Compensation Approach for Miniaturized Wilkinson Power Divider Design 小型化威尔金森功率分压器设计的补偿方法
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999836
Xiaolong Wang, Shuo Yang, Geyu Lu
{"title":"Compensation Approach for Miniaturized Wilkinson Power Divider Design","authors":"Xiaolong Wang, Shuo Yang, Geyu Lu","doi":"10.23919/apmc55665.2022.9999836","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999836","url":null,"abstract":"Although coupled microstrip line structure are widely used in various microwave components for miniaturization, because of its phase velocity difference in Wilkinson power divider design, port reflections (S11, $S$22 and $S$33) cannot match with port isolation (S32) at the same center frequency. In this paper, several compensation approaches are summarized for compact Wilkinson power dividers with single-band application. By adding extra lumped elements, capacitor or inductor can be shunted into the coupled microstrip line structures. Considering less parasitic effects around lumped elements, extra 50 Ω transmission lines and open-circuited stubs are preferred for high frequency applications. Finally, several selected examples are fabricated and measured, all the simulated results are matched with measured results very well.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"182 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":"121126168","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 Millimeter-Wave Ultra-Wide Band Power Amplifier in 0.15-μm GaAs pHEMT for 5G Communication 用于5G通信的0.15 μm GaAs pHEMT毫米波超宽带功率放大器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000027
B. Huang, Z. Fu, Kun-You Lin
{"title":"A Millimeter-Wave Ultra-Wide Band Power Amplifier in 0.15-μm GaAs pHEMT for 5G Communication","authors":"B. Huang, Z. Fu, Kun-You Lin","doi":"10.23919/apmc55665.2022.10000027","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000027","url":null,"abstract":"A millimeter-wave (mmW) ultra-wideband power amplifier (PA) fabricated in 0.15-μm GaAs pHEMT process is proposed. The equivalent magnetically-coupled resonator (MCR) is adopted to obtain wideband power performance. The input and inter-stage matching network is designed for small-signal gain-flatness to achieve a wideband small-signal response. This PA achieves a saturated output power (Psat) of 25.1 dBm and a peak power-added efficiency $(text{PAE}_{max})$ of 33.6%. Besides, 3-dB small-signal bandwidth and 1-dB Psat bandwidth are 75% and 51%, respectively.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"46 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":"121270557","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 Novel Design Method of Class E/F Power Amplifier Based on Waveform Analysis 基于波形分析的E/F类功率放大器设计新方法
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999873
Guo. Hong, Yonglun Luo, Rong Chang, Wanghong Yang, Danlei Xuan
{"title":"A Novel Design Method of Class E/F Power Amplifier Based on Waveform Analysis","authors":"Guo. Hong, Yonglun Luo, Rong Chang, Wanghong Yang, Danlei Xuan","doi":"10.23919/apmc55665.2022.9999873","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999873","url":null,"abstract":"In this paper, a new design method of class E/F power amplifier (E/F PA) is proposed. Under the conditions that the second harmonic is realized in the form of pure reactance and the third harmonic is short-circuited, a group of high-efficiency current and voltage waveforms of class E/F PA are found through waveform analysis. And the high-efficiency current and voltage expressions are deduced in detail. To verify the method, a PA operating at 3.2GHz is designed and fabricated. The tested power added efficiency (PAE) reaches 70.5% with the output power of 41.2dBm at an input power of 30dBm.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"11 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":"122292866","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
Study on accuracy improvement method for UHF-RFID system with the floor applicable microwave absorber 地板应用微波吸收器的超高频射频识别系统精度提高方法研究
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999884
Tatsuki Itoh, Y. Okano
{"title":"Study on accuracy improvement method for UHF-RFID system with the floor applicable microwave absorber","authors":"Tatsuki Itoh, Y. Okano","doi":"10.23919/apmc55665.2022.9999884","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999884","url":null,"abstract":"In recent years, UHF- radio-frequency identification (RFID) systems are paid to attention as one of technologies which achieve the unattended shop or production field. However, the reliability of indoor telecommunication is adversely affected by multiple reflection interference. Especially, because the floor exists as an electromagnetic scatter which cannot be evaded at the warehouse, the shop, and the factory, it is thought that the control of the reflection wave with the floor is necessary and indispensable. Therefore, the microwave absorber which can be paved on the floor is developed and evaluated results of the absorption performance are described.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"131 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":"122336923","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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