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Single-Wall Carbon Nanotube-based Flexible Monopole Antenna Fabricated using Poly (methyl methacrylate)-supported Transfer Technique 基于聚甲基丙烯酸甲酯转移技术制备的单壁碳纳米管柔性单极天线
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999853
Sho Kuromatsu, Takeshi Watanabe, Y. Nonoguchi, R. Suga, O. Hashimoto, Shinji Koh
{"title":"Single-Wall Carbon Nanotube-based Flexible Monopole Antenna Fabricated using Poly (methyl methacrylate)-supported Transfer Technique","authors":"Sho Kuromatsu, Takeshi Watanabe, Y. Nonoguchi, R. Suga, O. Hashimoto, Shinji Koh","doi":"10.23919/apmc55665.2022.9999853","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999853","url":null,"abstract":"The demand for flexible antennas is growing due to the increasing number of IoT -related devices. We fabricated single-wall carbon nanotube (SWCNT)-based flexible monopole antennas using our developed poly (methyl methacrylate)-supported transfer technique. We evaluated reflection coefficients $(vert S_{11}vert)$, radiation patterns, and maximum gain of the un-bended and bended SWCNT antennas. The maximum gains of the unbended and bended SWCNT antennas were almost the same, and the radiation patterns behaved similarly to a metal antenna. These results demonstrate versatile potential for the application of SWCNT films to flexible antennas.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"82 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":"117251652","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
Feasibility Study of Uniform Microwave Heating by Switching OAM Modes 切换OAM模式实现均匀微波加热的可行性研究
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999964
Kento Suzuki, T. Mitani, N. Shinohara
{"title":"Feasibility Study of Uniform Microwave Heating by Switching OAM Modes","authors":"Kento Suzuki, T. Mitani, N. Shinohara","doi":"10.23919/apmc55665.2022.9999964","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999964","url":null,"abstract":"The objective of this study is to realize uniform power density distribution over a large area for uniform microwave heating. Utilizing the Orbital Angular Momentum (OAM) mode irradiation pattern, we investigated the uniformity of power density distribution by adding the results of multiple modes. Simulation and measurement results confirmed that the synthesized power density distribution can be made uniform by giving an appropriate ratio of weights. The results show that the method using OAM modes is effective for uniform microwave heating over a large area.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"52 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":"127280813","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
Impact of Differential-mode Noise Converted from External RF Noise on Differential Transmission and its Reduction by Differential Signal Balancer 外部射频噪声转换的差模噪声对差分传输的影响及差分信号平衡器的抑制
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000026
M. Kameya, E. Gofuku, K. Nakamura
{"title":"Impact of Differential-mode Noise Converted from External RF Noise on Differential Transmission and its Reduction by Differential Signal Balancer","authors":"M. Kameya, E. Gofuku, K. Nakamura","doi":"10.23919/apmc55665.2022.10000026","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000026","url":null,"abstract":"The impact of differential-mode noise converted from RF noise applied to the differential transmission line channel (DTLC) due to the common-mode filter (CMF) and glass cloth in the DTLC substrate is analyzed. The differential mode noise generated in DTLC with CMF is measured with a 4-port network analyzer. Based on this measurement result, the influence of glass cloth is incorporated into the electromagnetic simulation model of DTLC. By applying this DTLC model to circuit analysis, the suitability of various CMFs as solutions for RF interference is evaluated.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"27 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":"123428335","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
Fully Integrated Bandpass Filter with High Isolation Attenuator Function Using Semi-conductor Distributed Doped Areas 采用半导体分布掺杂区域的具有高隔离衰减功能的全集成带通滤波器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999799
Corentin Le Lez, R. Allanic, D. L. Berre, C. Quendo, Rose-Marie Sauvage, A. Leuliet, T. Merlet, Douglas Silva de Vasconcellos, V. Grimal, D. Valente, J. Billoué
{"title":"Fully Integrated Bandpass Filter with High Isolation Attenuator Function Using Semi-conductor Distributed Doped Areas","authors":"Corentin Le Lez, R. Allanic, D. L. Berre, C. Quendo, Rose-Marie Sauvage, A. Leuliet, T. Merlet, Douglas Silva de Vasconcellos, V. Grimal, D. Valente, J. Billoué","doi":"10.23919/apmc55665.2022.9999799","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999799","url":null,"abstract":"In this paper, a quarter wavelength coupled lines X-band bandpass filter (BPF) integrating an attenuator feature is presented. The high rejection analog attenuator uses integrated Semiconductor Distributed Doped Areas (ScDDAs) on silicon substrate as tunable resistors. The measured insertion loss of 2.8 dB and attenuation range of 42 dB allow a precise control of the transmitted power for highly integrated systems. A coupled semiconductor physics and electromagnetic structure simulation framework is also proposed in retro-simulations to improve design accuracy of distributed semiconductor devices.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"178 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":"123772054","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
Demonstration of 405-nm Two-Tone Lightwave for Terahertz-wave Generation at InGaN Photodiode 在InGaN光电二极管上产生405nm两色太赫兹波的演示
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999860
Qingjie Song, Yuya Mikami, K. Kato
{"title":"Demonstration of 405-nm Two-Tone Lightwave for Terahertz-wave Generation at InGaN Photodiode","authors":"Qingjie Song, Yuya Mikami, K. Kato","doi":"10.23919/apmc55665.2022.9999860","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999860","url":null,"abstract":"Terahertz-wave has been attracting attention for high-speed wireless communication and photomixing is considered to be a promising method for generating terahertz-waves. Since the output power of the conventional InGaAsP-based photomixer saturates due to its lower voltage resistance, an InGaN-based photomixer with higher voltage resistance is under investigating. One of the essential technologies of InGaN-based photomixing is two-tone single-mode lightwave. In this paper, we devised a method to make a two-tone lightwave using a 405-nm laser and a periodic optical filter. We successfully demonstrated the two-tone lightwaves for four different terahertz bands.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"42 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":"114959263","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 Ka-band Antenna with High-Gain and Conical Beam 一种高增益锥形波束ka波段天线
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999863
Yifan Yu, Boyang Qian, Yue Gao, Yilong Wang, Li Wu
{"title":"A Ka-band Antenna with High-Gain and Conical Beam","authors":"Yifan Yu, Boyang Qian, Yue Gao, Yilong Wang, Li Wu","doi":"10.23919/apmc55665.2022.9999863","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999863","url":null,"abstract":"A high gain conical beam antenna operating at Ka-band is proposed in this paper. The proposed antenna consists of a feed source and a dual-reflector. The radiation patch based on substrate integrated waveguide (SIW) is designed to generate a conical beam as feed source, and a dual-reflector is employed to increase the antenna gain. The proposed antenna is verified with simulation experiments. The simulated results show that the -10dB impedance bandwidth of the antenna is in the range of 33.8-38.5GHz, with a relative bandwidth of 13% and a peak gain of 16.6dBi.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"246 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":"115099198","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
Mutual Coupling Reduction of Mimo Antenna Using Metamaterial Absorber for 5G Base Stations 5G基站用超材料吸收器减少Mimo天线互耦
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999921
Dinh Hai Truyen Hoang, Vu Xuan Trung Nguyen, Trong Toan Do, Duc Nhat Nguyen, Thi Anh Vu, Quang Nhuong Tran
{"title":"Mutual Coupling Reduction of Mimo Antenna Using Metamaterial Absorber for 5G Base Stations","authors":"Dinh Hai Truyen Hoang, Vu Xuan Trung Nguyen, Trong Toan Do, Duc Nhat Nguyen, Thi Anh Vu, Quang Nhuong Tran","doi":"10.23919/apmc55665.2022.9999921","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999921","url":null,"abstract":"In this paper, a high port-to-port isolation multiple inputs multiple outputs (MIMO) dual-polarized antenna which covering N41 band has been present in favor of 5G New Radio (5GNR) base stations. The mutual coupling is reduced by using an array of metamaterial absorber which is orthogonally introduced in center of two subarrays at a center frequency of 2.6 GHz. The 3 $mathrm{x} 8$ antenna array where the closely inter-antenna spacing (center to center) of 68 mm $mathrm{x} 55$ mm $boldsymbol{(0.59 lambda_{0} mathrm{x} 0.48lambda_{0})}$ is proposed. An array of $12 mathrm{x} 1$ unit cell of metamaterial absorber is utilized to enhance col - polarized isolation (S31) and cross - polarized isolation (S21). The measured results which correspond well with the simulated ones illustrate a satisfactory mutual coupling reduction, thus cross - polarized isolation $vert mathrm{S}_{21}vert$ has improved from -19 dB to -26.8 dB and the col - polarized isolation $vert mathrm{S}_{31}vert$ has enhanced from -16.8 dB to -25 dB comparing to the utilization of metallic wall.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"45 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":"122356279","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
Compact and Wideband Filtering Power Dividers with Arbitrary and Constant Output Phase Difference 具有任意和恒定输出相位差的紧凑和宽带滤波功率分压器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.10000054
He Zhu, Y. Guo
{"title":"Compact and Wideband Filtering Power Dividers with Arbitrary and Constant Output Phase Difference","authors":"He Zhu, Y. Guo","doi":"10.23919/apmc55665.2022.10000054","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.10000054","url":null,"abstract":"This paper presents a wideband filtering power divider with arbitrary phase difference between two output ports. Different from the traditional Wilkinson power dividers, this structure utilizes two π-shaped structures to replace the quarter-wavelength transmission lines. Based on the π-shaped structure, the phase characteristics can be modified without affecting the magnitude of the transmission coefficient. As a result, the phase difference between output ports can be changed to a non-zero value. A planar design is modelled, simulated, fabricated and measured to verify the design concept.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"12 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":"122580292","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
Unequal LC-Ladder Divider with Broad/Dual-Band Characteristics Utilizing Two-Frequency Matching 利用双频匹配的宽带/双频特性不等等lc -阶梯分频器
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999819
Masatoshi Fukunaga, T. Kawai, A. Enokihara
{"title":"Unequal LC-Ladder Divider with Broad/Dual-Band Characteristics Utilizing Two-Frequency Matching","authors":"Masatoshi Fukunaga, T. Kawai, A. Enokihara","doi":"10.23919/apmc55665.2022.9999819","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999819","url":null,"abstract":"This paper deals with an unequal power divider with two matching frequencies by using LC-ladder circuits. This circuit that is constructed based on the Wilkinson power divider, consists of 9 elements. This circuit can achieve the same or wider bandwidth as the original one by holding the two matching frequencies close together. In order to confirm the practicality in IoT, the design center frequency is set to 920 MHz, and its actual measurement is carried out after circuit pattern design and analysis.","PeriodicalId":219307,"journal":{"name":"2022 Asia-Pacific Microwave Conference (APMC)","volume":"75 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":"122858050","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 High Attenuation a Microstrip Wide-Stopband Bandstop Filter Applied in Ku and K Bands Ku和K波段高衰减微带宽阻带滤波器的设计
2022 Asia-Pacific Microwave Conference (APMC) Pub Date : 2022-11-29 DOI: 10.23919/apmc55665.2022.9999906
Ching‐Wen Tang, Chieh-Hsuan Yang
{"title":"Design of A High Attenuation a Microstrip Wide-Stopband Bandstop Filter Applied in Ku and K Bands","authors":"Ching‐Wen Tang, Chieh-Hsuan Yang","doi":"10.23919/apmc55665.2022.9999906","DOIUrl":"https://doi.org/10.23919/apmc55665.2022.9999906","url":null,"abstract":"The compact microstrip bandstop filters with high attenuation and wide stopband have been developed. In order to realize the bandstop filter with broad stopband and great attenuation within the stopband, the coupled lines with single-ended ground have been adopted at both input and output ports. Moreover, for a greater fractional bandwidth, a higher impedance ratio Ze/Zo of the adopted coupled lines is required. The bandstop filter, with the attenuation of 40 dB and a fractional bandwidth of 60%, has been developed for applied in Ku and K bands to verify the proposed method.","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":"122871768","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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