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Design of a Low-Voltage High-Efficiency 250 GHz Gyrotron 250ghz低压高效回旋管的设计
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617302
Chenxiang An, Dian Zhang, Jun Zhang, Song Li, Jing Liu
{"title":"Design of a Low-Voltage High-Efficiency 250 GHz Gyrotron","authors":"Chenxiang An, Dian Zhang, Jun Zhang, Song Li, Jing Liu","doi":"10.23919/APMC.2018.8617302","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617302","url":null,"abstract":"Low-voltage, high-frequency gyrotrons with hundreds watts of power are useful in magnetic resonance spectroscopy and plasma diagnostic applications. In this paper, a 10 kV, 478 W, 250 GHz gyrotron with efficiency near 40% and pitch ratio of 1.5 was designed through linear and nonlinear numerical analysis and Vsim particle-in-cell (PIC) simulation. Vsim is a highly efficient parallel PIC code, but it has seldom been used to carry out electron beam wave interaction simulations of gyro-devices. The setting up of the parameters required for the Vsim simulations of the gyrotron is presented. The results of Vsim simulations agree well with that of nonlinear numerical calculation.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126759553","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 Compact Dual-Wideband Bandpass Filter with the Dual Stepped-Impedance Rectangular-Rings Resonator 采用双阶进阻抗矩形环谐振器的紧凑型双宽带带通滤波器设计
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617351
Yi-Yuan Lin, Guan-Yin Lin, Ching‐Wen Tang
{"title":"Design of a Compact Dual-Wideband Bandpass Filter with the Dual Stepped-Impedance Rectangular-Rings Resonator","authors":"Yi-Yuan Lin, Guan-Yin Lin, Ching‐Wen Tang","doi":"10.23919/APMC.2018.8617351","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617351","url":null,"abstract":"In this paper, a compact dual-wideband bandpass filter is presented. Based on the dual stepped-impedance rectangular-rings resonator, the bandpass filter with dual passbands can be realized. In order to obtain wide dual passbands, the high-impedance coupled lines are adopted for input and output ports to enhance the coupling. Moreover, with the assistance of open stubs added to the central transmission line, the harmonics can be suppressed and a wide stopband can be generated. An exemplary bandpass filter, operated at 2.5 and 7.25 GHz as the central frequencies, is fabricated, and both the corresponding 3-dB absolute bandwidths are the same as 1.5 GHz. In addition, the measured stopband can be extended to 13.8 GHz with the rejection level of 32 dB.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116453929","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
Emulator to Generate Multiple Heterogeneous Interference Signal in Korean Unlicensed Band 在韩国无许可频带中产生多异质干扰信号的仿真器
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617520
SangJoong Lee, H. Yoon, Kyung-Jin Baik, Byung-Jun Jang
{"title":"Emulator to Generate Multiple Heterogeneous Interference Signal in Korean Unlicensed Band","authors":"SangJoong Lee, H. Yoon, Kyung-Jin Baik, Byung-Jun Jang","doi":"10.23919/APMC.2018.8617520","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617520","url":null,"abstract":"In this paper, we suggest an emulator to generate multiple heterogeneous interference signals in Korean unlicensed frequency band. The suggested emulator uses only one universal software radio peripheral (USRP) to generate multiple heterogeneous signals more easily and economically. Also, the physical and media access control (MAC) parameters can be adjusted in real-time using LabViewprogram, thereby making it possible to create various time-varying interference environments easily. As an example showing the capability of suggested emulator, multiple interference signals consisting of a frequency-hopping RFID signal and two LoRa signals with different spreading factors were generated. The generated signals were confirmed in both frequency- and time-domains.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"484 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122745804","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
L-Probe Fed Patch Antenna with Single layer for 28-GHz Applications 用于28ghz应用的单层l探针馈电贴片天线
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/apmc.2018.8617451
Y. Iitsuka, Kazuo Saitoh, Takayuki Ogoshi
{"title":"L-Probe Fed Patch Antenna with Single layer for 28-GHz Applications","authors":"Y. Iitsuka, Kazuo Saitoh, Takayuki Ogoshi","doi":"10.23919/apmc.2018.8617451","DOIUrl":"https://doi.org/10.23919/apmc.2018.8617451","url":null,"abstract":"L-probe fed patch antennas with a single layer for 28-GHz application are presented. At first, three types of L-probe fed patch antennas are discussed. Next based on the result, a U-slot patch antenna fed by an L-probe is proposed to suppress a cross-polarization (X-pol.) radiation. Finally, a fabricated $4text{x}4$ patch array composed of the proposed U-slot patch elements is demonstrated. A 2-GHz impedance bandwidth (7%) is obtained with the simple antenna structure.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122660153","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
A Wide Band Coupler with High Directivity Using Phase Compensation for LTE 基于相位补偿的LTE高指向性宽带耦合器
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617294
Jong-Mo Lim, Hyunhwan Yoo, Yoohwan Kim, Hyung-Jun Cho, Hyun-Hwan Yoo, Yoosam Na
{"title":"A Wide Band Coupler with High Directivity Using Phase Compensation for LTE","authors":"Jong-Mo Lim, Hyunhwan Yoo, Yoohwan Kim, Hyung-Jun Cho, Hyun-Hwan Yoo, Yoosam Na","doi":"10.23919/APMC.2018.8617294","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617294","url":null,"abstract":"A small size bi-directional coupler with high directivity using phase compensation is presented in CMOS SOI 180nm process. To achieve a high directivity in the wide band, we introduce a phase compensation technique with simple RC circuits. The RC circuit can help to improve directivity and a coupling factor. The coupler integrated with SP8T is achieved with minimum 20 dB directivity and −23 dB coupling factor from 1.7 GHz to 2.7 GHz. The size of the fabricated coupler is only about 0.24 mm2including pads.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114245878","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
Supply Noise Induced Jitter Reduction in Package Power Distributed Networks for 28 Gbps High Speed Serial Links 用于28gbps高速串行链路的封装分布式电源网络中电源噪声引起的抖动降低
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617484
Sheng-Fan Yang, H. Lin, Martin Sun, Steve S.A. Wan
{"title":"Supply Noise Induced Jitter Reduction in Package Power Distributed Networks for 28 Gbps High Speed Serial Links","authors":"Sheng-Fan Yang, H. Lin, Martin Sun, Steve S.A. Wan","doi":"10.23919/APMC.2018.8617484","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617484","url":null,"abstract":"This paper presents an IC package co-design methodology to reduce power supply noise induced jitter for 28 Gbps high speed serial link in tsmc 28nm technology with 10-layers FCBGA substrate. To reduce the supply noise induced jitter, the package design is enhanced at the power distributed networks (PDNs) in layout design phase. The enhancements are reduction at power supply parasitic inductance and isolation at cross-power domains. Through the proposed methodology, the supply noise induced jitter is reduced 800% at the output eye-diagram of 28 Gbps high speed serial link, compared with the design without PDNs enhancement, and also without package manufacturing cost increment.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114271861","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
A Differential 90° Phase Shifter with Controllable Common-Mode Suppression 具有可控共模抑制的差分90°移相器
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617555
Wei Zhang, Kai Xu, Gire Merphy Mbongo, Jin Shi
{"title":"A Differential 90° Phase Shifter with Controllable Common-Mode Suppression","authors":"Wei Zhang, Kai Xu, Gire Merphy Mbongo, Jin Shi","doi":"10.23919/APMC.2018.8617555","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617555","url":null,"abstract":"This paper presents a differential 90° phase shifter, which is constructed by coupled line and loaded transmission line with an open stub. It is not only can provide differential-mode (DM) phase shift, but also has controllable common-mode (CM) suppression. A prototype of 90° differential phase shifter is designed, the simulated and measured results have good agreement with the operation bandwidth for $pmb{90^{circ}pm 5.5^{circ}}$ of 73%, with the minimum insertion of 0.27 dB, with the CM suppression better than 10 dB, and with the minimum return loss of 15.1 dB, respectively.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114366394","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 the Compact Planar Butler Matrix 紧凑平面管家矩阵的设计
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617162
Chen-Chan Tang, Chun-Yuan Huang, Ching‐Wen Tang
{"title":"Design of the Compact Planar Butler Matrix","authors":"Chen-Chan Tang, Chun-Yuan Huang, Ching‐Wen Tang","doi":"10.23919/APMC.2018.8617162","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617162","url":null,"abstract":"A planar $4times 4$ Butler matrix with a compact size is proposed. With the dual transmission lines, the proposed Butler matrix has arbitrary phase difference and phase delay for the used couplers and crossovers, respectively. In terms of experimental verification, the circuit size of the fabricated Butler matrix is $0.86lambda_{g}times 0.66lambda_{g}$. In addition, the matched results between measurement and theoretical calculation can validate the proposed Butler matrix.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114581723","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: 7
Negative Effective Permeability Material Composed of Multi-Layer Ceramic Capacitors 多层陶瓷电容器组成的负有效磁导率材料
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617125
T. Nguyen, Naoyuki Kinai, N. Michishita, H. Morishita, T. Miyazaki, M. Tadokoro
{"title":"Negative Effective Permeability Material Composed of Multi-Layer Ceramic Capacitors","authors":"T. Nguyen, Naoyuki Kinai, N. Michishita, H. Morishita, T. Miyazaki, M. Tadokoro","doi":"10.23919/APMC.2018.8617125","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617125","url":null,"abstract":"Multi-layer ceramic capacitors (MLCCs) have been employed for miniaturizing the unit cell structure of metamaterials. In addition, specific absorption rate suppression methods and thin wave absorbers based on metamaterials composed of MLCCs have been reported. This paper proposes a negative effective permeability material composed of MLCCs. Firstly, effective permittivity and permeability are obtained from simulated S-parameters and compared with the dispersion characteristics. Next, the reflection S11and transmission S21characteristics of the stacked metamaterial structure composed of the MLCCs are analyzed and then compared with experimental results.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121906285","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
Rectenna Array Design for Receiving High Power in Beam Type Wireless Power Transmission 波束型无线电力传输中大功率接收整流天线阵列设计
2018 Asia-Pacific Microwave Conference (APMC) Pub Date : 2018-11-01 DOI: 10.23919/APMC.2018.8617448
Youngjin Park, Kwanho Kim, Dong-Gi Youn
{"title":"Rectenna Array Design for Receiving High Power in Beam Type Wireless Power Transmission","authors":"Youngjin Park, Kwanho Kim, Dong-Gi Youn","doi":"10.23919/APMC.2018.8617448","DOIUrl":"https://doi.org/10.23919/APMC.2018.8617448","url":null,"abstract":"In the paper, rectenna array design is introduced for receiving high power in beam type wireless power transmission. Two rectenna arrays for 2.45 GHz and 5.8 GHz are designed and built, respectively. A patch antenna is used for each rectenna. The rectenna array for 2.45 GHz is made by 600 rectennas combined in parallel and series which can supply about 100 W. The 5.8 GHz array is made by 486 rectennas combined in parallel and series. For verification, the 100 W class rectenna array for 2.45 GHz is demonstrated by using a magnetron and a pyramidal horn antenna while the compact retenna for 5.8 GHz is tested by using an RF source of GaN power amplifiers and a rigid horn antenna. In experiment, a 60 W color LED bar turns on by using the 2.45 GHz rectenna array at 10 m distance.","PeriodicalId":298643,"journal":{"name":"2018 Asia-Pacific Microwave Conference (APMC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128204570","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
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