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Radar concept to monitor space without scanning 不用扫描就能监视空间的雷达概念
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331431
A. Martirosyan, R. Kostanyan, P. H. Muzhikyan, H. Azizbekyan
{"title":"Radar concept to monitor space without scanning","authors":"A. Martirosyan, R. Kostanyan, P. H. Muzhikyan, H. Azizbekyan","doi":"10.1109/APMC47863.2020.9331431","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331431","url":null,"abstract":"In this paper, we present a new concept to detect and track the target without scanning the space. In contrast to the Doppler effect, the new approach allows one to monitor the movement of the target in the transverse plane relative to the direction of detection. The concept is based on a recording of incoming microwave power with the linear array of detecting chips located at the radar focal plane. Meanwhile, a power detection coefficient is assigned to each chip according to the spatially distributed square function. The feasibility of primary tracking radar setup operating on a new concept is demonstrated experimentally. The vertical cylindrical Fresnel lens focuses 5 GHz electromagnetic waves from the target into the image plane, where the horizontal linear array of chips with antennas and amplifiers records the incident microwave powers. The Arduino board and software are used for processing the data and tracking the target’s horizontal location.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124422609","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
Dual-band Bandpass Filter Based on Frequency Transformations With Enhanced Inter-band Isolation 基于增强带间隔离的变频双带通滤波器
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331380
Shao-Chan Tang, Pei-Cheng Chu, J. Kuo, Lin-Kun Wu
{"title":"Dual-band Bandpass Filter Based on Frequency Transformations With Enhanced Inter-band Isolation","authors":"Shao-Chan Tang, Pei-Cheng Chu, J. Kuo, Lin-Kun Wu","doi":"10.1109/APMC47863.2020.9331380","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331380","url":null,"abstract":"The coupling matrix approach is used to synthesize a dual-band filter. The two Chebyshev passbands are in close proximity and symmetric about a designated frequency, where two neighboring zeros are allocated for enhancing inter-band isolation. In the synthesis, two successive frequency transformations originated from lowpass domain are employed to establish the dual-band response. With the aid of source-load coupling, two extra zeros close to outer passband edges are further created to greatly improve the frequency selectivity. A microstrip filter is fabricated and tested for validation. Measured results show good agreement with simulation responses.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126353619","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
Far-field pattern Analysis of multimode circular patch antenna on SISL platform using CMA 基于CMA的SISL平台多模圆形贴片天线远场方向图分析
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331422
Eric Newton Moro, Kaixue Ma, Yu Luo, Ningning Yan, Bin Tang
{"title":"Far-field pattern Analysis of multimode circular patch antenna on SISL platform using CMA","authors":"Eric Newton Moro, Kaixue Ma, Yu Luo, Ningning Yan, Bin Tang","doi":"10.1109/APMC47863.2020.9331422","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331422","url":null,"abstract":"A multimode circular patch antenna is studied using characteristic mode analysis on SISL platform. Four modes with directive far field patterns that resonate close to each other are obtained. With the physical insight provided by the CMA, a feeding structure is designed to excite two modes with wide band characteristics. More than two modes can be utilized by properly adjusting the feeding system and other feeding systems can be used as well. This method is applicable to antenna design with different properties for different applications.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126507162","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 Transformation of Biological Tissue from Non-Planar to Effective Planar Based on Complementary Split-Ring Resonators 基于互补分裂环谐振器的生物组织从非平面到有效平面的转化
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331567
Yao-Hui Wang, Chin-Lung Yang
{"title":"A Transformation of Biological Tissue from Non-Planar to Effective Planar Based on Complementary Split-Ring Resonators","authors":"Yao-Hui Wang, Chin-Lung Yang","doi":"10.1109/APMC47863.2020.9331567","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331567","url":null,"abstract":"A new concept of transforming a non-planar MUT to a planar MUT with an effective air gap is proposed in this paper. The air gap existing between the MUT and sensor usually make large error in measurement, but by sensing with a multiring sensor, the effect of the air gap can be eliminated. However, in the case of a non-planar MUT, the curved surface of MUTs make the multiring of the sensor sensed different thickness of air gap. Thus, the approach of above cannot be use to eliminate the frequency shift cause by the air gap, and this will cause a undesired error in the experiment. Therefore, a triple-ring complementary split-ring resonator (CSRR) is used to estimate the effective air gap that make the smallest difference of the three resonance frequencies. Finally, with the transforming equation, a non-planar porcine fat with 10 mm thickness, 20 mm radius of curvature and 0 mm air gap are transformed into an effective planar MUT with 0.646 mm planar air gap. The result compare to simulation only with an error of 0.067 mm.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131345302","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 Study on Design of Microstrip Linear Tapered Line Impedance Transformer Using FFT 基于FFT的微带线性变径线阻抗变压器设计研究
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331565
Taisei Urakami, Y. Kusama
{"title":"A Study on Design of Microstrip Linear Tapered Line Impedance Transformer Using FFT","authors":"Taisei Urakami, Y. Kusama","doi":"10.1109/APMC47863.2020.9331565","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331565","url":null,"abstract":"A series of processes from design to measurement of a microstrip linear tapered line impedance transformer is studied. The exponential taper is well known as a MSL impedance transformer, and the design theory is relatively easy, but it requires the use of staircase approximation for manufacturing, and has a problem that it takes time to manufacture. On the other hand, the linear taper is easy to manufacture, but has a problem that the calculation is troublesome because the theoretical calculation required for the design is given in the integral form. So, in this study, FFT is applied as a design method of the linear taper, and confirmed the effectiveness of presented method. It is considered that the linear taper is easy to manufacture, but it is confirmed by experiments that the measurement value would be affected if the linear line is not accurate. This method can be applied to fast calculation of the reflection coefficient of a tapered line having an arbitrary function as a characteristic impedance.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134320851","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
Wide Stopband Filtering Antenna with High Gain for Ka Band Ka波段高增益宽阻带滤波天线
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331584
Jianpei Chen, Dongya Shen, Xiupu Zhang
{"title":"Wide Stopband Filtering Antenna with High Gain for Ka Band","authors":"Jianpei Chen, Dongya Shen, Xiupu Zhang","doi":"10.1109/APMC47863.2020.9331584","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331584","url":null,"abstract":"In the paper, a wide stopband filtering antenna with high gain is proposed. Based on a wideband antenna for Ka band, a simple U-shaped slot is designed etching on the feeding patch, to achieve one stopband width of 1.5 GHz with average gain down 3 dB, in the range of 34.0-35.5GHz. Then two U-shape slots with different efficient length are designed, resulting in a two order stopband filtering antenna, which has a stopband width of 2.1GHz, in the range of 32.3-34.4GHz.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130795564","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
Perspectives on Passive and Active Huygens’ Metasurfaces 被动和主动惠更斯超表面研究进展
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/apmc47863.2020.9331617
G. Eleftheriades
{"title":"Perspectives on Passive and Active Huygens’ Metasurfaces","authors":"G. Eleftheriades","doi":"10.1109/apmc47863.2020.9331617","DOIUrl":"https://doi.org/10.1109/apmc47863.2020.9331617","url":null,"abstract":"We will describe the concept of the Huygens’ metasurface which comprises co-located electric and magnetic dipoles forming an electrically dense array of Huygens’ sources or scatterers. These engineered surfaces can be designed to control electromagnetic waves at will. Both passive and active Huygens’ metasurfaces can be envisioned. Unlike traditional antenna transmitarrays, Huygens’ metasurfaces can be made sub-wavelength thin and deprived of spurious Floquet modes, while preserving excellent matching characteristics. Huygens’ metasurfaces can be used to manipulate the phase, magnitude and polarization of incident electromagnetic waves, including those from nearby elementary antennas, for a variety of applications. For example, Huygens’ omega bi-anisotropic metasurfaces enable wave refraction at extreme angles without any reflections. They also allowed the demonstration of generalized flat reflectors having an arbitrary angle of reflection with respect to the angle of incidence and with 100% theoretical efficiency. Examples of Huygens’ metasurface applications to be discussed include focusing and lensing, polarization control including chirality, active cloaking, high aperture efficiency/low-profile antennas, antenna aperture beamforming with simultaneous magnitude and phase control, and electronic beam steering.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133004952","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
1 BIT Wide-Band Hexagonal Electronically Reconfigurable Unit Cell for Ka-Band Transmit-array 用于ka波段发射阵列的1bit宽带六角形电子可重构单元
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331390
Qasim Ali, Yu Xiao, Houjun Sun
{"title":"1 BIT Wide-Band Hexagonal Electronically Reconfigurable Unit Cell for Ka-Band Transmit-array","authors":"Qasim Ali, Yu Xiao, Houjun Sun","doi":"10.1109/APMC47863.2020.9331390","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331390","url":null,"abstract":"A wideband hexagonal dual ring gap coupled (HDRGC) linearly polarized electronically reconfigurable transmit-array unit cell is presented in this paper. The passive patch has two rings, the inner ring is an electromagnetic gap coupled with the outer ring to enhance the bandwidth of the proposed unit cell. We use offset feed to get stable and broad bandwidth for both state I and state II. Minimum theoretical insertion losses are achieved of less than 0.6 dB for state I and state II. 3dB transmission bandwidth reaches up to 19.8% for the two-state name as (state I and state II).","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127635310","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 Compact linearizer for Independently Tuning the Gain Characteristic at C-Band 用于独立调谐c波段增益特性的紧凑型线性器
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331611
Zehua Xiao, F. You, Peng Hao, Caoyu Li, Songbai He
{"title":"A Compact linearizer for Independently Tuning the Gain Characteristic at C-Band","authors":"Zehua Xiao, F. You, Peng Hao, Caoyu Li, Songbai He","doi":"10.1109/APMC47863.2020.9331611","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331611","url":null,"abstract":"This paper presents a compact linearizer for independently tuning the gain characteristic at C-band. The proposed analog predistortion (APD) linearizer is designed to use a two-way synthesis technique to decouple the characteristic of gain and phase, and both ways are designed by capacitors, inductors, and microstrip lines for cutting down the layout size. This proposed APD operates at a center frequency of 3.8 GHz and only has a size of 3.2*2.8 cm2. The result shows that the tuning range of AM/AM and AM/PM is more than 2.3 dB and less than 4.5 degrees. Using a 100 MHz long-term evolution (LTE) signal with a 9.9 dB peak-to-average power ratio (PAPR) as the excitation of the power amplifier (PA), this APD linearizer can improve its Adjacent Channel Power Ratio (ACPR) by more than 7 dB.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131416579","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
Transmission line to waveguide transition at 220 GHz for vacuum photodiode 真空光电二极管在220 GHz的传输线到波导的转换
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331549
Jun Dai, C. Ruan, Yikun Ding, Xingyun Zhang
{"title":"Transmission line to waveguide transition at 220 GHz for vacuum photodiode","authors":"Jun Dai, C. Ruan, Yikun Ding, Xingyun Zhang","doi":"10.1109/APMC47863.2020.9331549","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331549","url":null,"abstract":"This paper presents a study of transmission line to waveguide transitions at 220 GHz for vacuum photodiode. Compared with solid-state high-speed photodiodes, terahertz (THz) vacuum photodiodes are superior in the aspects of high carrier mobility and low energy loss. To ensure high-power applications, rectangular coaxial waveguide and coplanar waveguide transition are optimized to couple the vacuum photodiode with a WR-4 rectangular metallic waveguide. Simulated results demonstrate that the reflection coefficients drop dramatically when the thickness of the substrate in the rectangular coaxial waveguide transition reduces to 10 μm. The transition using coplanar waveguide covers a wide bandwidth, and the reflection coefficients reach near -28 dB. The transition using coplanar waveguide can be applied to 220 GHz wireless satellite communications.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115746365","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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