Pub Date : 2018-05-07DOI: 10.1109/ICMMT.2018.8563512
Hong Wang, Zhaoyang Zhang, Xiaoming Chen
Opportunistic beamforming has always been attracting plenty of attentions due to its capability of inducing large channel fluctuations and providing high multiuser diversity gain. However, in most of the existing opportunistic beamforming schemes, only one user is scheduled for data transmission at each time slot. To serve more users simultaneously, in this paper, a novel non-orthogonal scheduling algorithm is proposed from the perspectives of perfect successive interference cancellation (SIC) and system rate maximization. Simulation results validate that the proposed scheme achieves an obvious performance gain over two conventional baseline schemes.
{"title":"Successive Interference Cancellation Based Non-Orthogonal Opportunistic Beamforming","authors":"Hong Wang, Zhaoyang Zhang, Xiaoming Chen","doi":"10.1109/ICMMT.2018.8563512","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563512","url":null,"abstract":"Opportunistic beamforming has always been attracting plenty of attentions due to its capability of inducing large channel fluctuations and providing high multiuser diversity gain. However, in most of the existing opportunistic beamforming schemes, only one user is scheduled for data transmission at each time slot. To serve more users simultaneously, in this paper, a novel non-orthogonal scheduling algorithm is proposed from the perspectives of perfect successive interference cancellation (SIC) and system rate maximization. Simulation results validate that the proposed scheme achieves an obvious performance gain over two conventional baseline schemes.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115028157","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8564010
Q. Hu, Xiaofang Zhu, Yu-Lu Hu, Bin Li
Microwave Tube Simulator Suite (MTSS) is a fully featured tightly integrated software package for microwave tube analysis and design. Recently, some improvements have been made to improve the performance and to make it suitable for simulation of millimeter wave and terahertz vacuum electronic devices. In the paper, the improvements are introduced and a Terahertz folded waveguide traveling wave tube is simulated. The comparison between MTSS and CST PS simulation is performed and the improvements are validated.
{"title":"Improvements of MTSS for Simulation of Millimeter and Terahertz Vacuum Electronic Devices","authors":"Q. Hu, Xiaofang Zhu, Yu-Lu Hu, Bin Li","doi":"10.1109/ICMMT.2018.8564010","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8564010","url":null,"abstract":"Microwave Tube Simulator Suite (MTSS) is a fully featured tightly integrated software package for microwave tube analysis and design. Recently, some improvements have been made to improve the performance and to make it suitable for simulation of millimeter wave and terahertz vacuum electronic devices. In the paper, the improvements are introduced and a Terahertz folded waveguide traveling wave tube is simulated. The comparison between MTSS and CST PS simulation is performed and the improvements are validated.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128353947","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563446
Jingyuan Wang, Hongxi Yu, Fei Yang
This paper proposed a design of micro-strip line class-E power amplifier based on GaN HEMT devices working at 2.2GHz. By means of part harmonics suppression and inductance effect enhancing in the drain bias circuit, ideal class-E voltage and current waveform at drain and high efficiency were achieved. The combining simulation results demonstrate 74.8% PAE, 15.1dB power gain and 41.16dBm output power with 26dBm input power.
{"title":"Design of GaN HEMT Class-E Power Amplifier for Satellite Communication","authors":"Jingyuan Wang, Hongxi Yu, Fei Yang","doi":"10.1109/ICMMT.2018.8563446","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563446","url":null,"abstract":"This paper proposed a design of micro-strip line class-E power amplifier based on GaN HEMT devices working at 2.2GHz. By means of part harmonics suppression and inductance effect enhancing in the drain bias circuit, ideal class-E voltage and current waveform at drain and high efficiency were achieved. The combining simulation results demonstrate 74.8% PAE, 15.1dB power gain and 41.16dBm output power with 26dBm input power.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121360176","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563948
Min Wang, Q. Chu
This paper presents a reconfigurable water dense dielectric patch antenna (DDPA) with cross-shape feeding structure. The distilled water patch acts as an electric wall. The height of distilled water in the polyvinyl chloride (PVC) plastic box can be adjusted for frequency reconfiguration. The cross-shape feeding structure and the cylindrical copper is used for improving the impedance matching. Moreover, an air gap is inserted between the water patch and the substrate to improve radiation efficiency. Impedance bandwidth of the antenna achieves 20% and radiation efficiency is 50%-75%.
{"title":"A Reconfigurable Water Dense Dielectric Patch Antenna with Cross-Shape Feeding Structure","authors":"Min Wang, Q. Chu","doi":"10.1109/ICMMT.2018.8563948","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563948","url":null,"abstract":"This paper presents a reconfigurable water dense dielectric patch antenna (DDPA) with cross-shape feeding structure. The distilled water patch acts as an electric wall. The height of distilled water in the polyvinyl chloride (PVC) plastic box can be adjusted for frequency reconfiguration. The cross-shape feeding structure and the cylindrical copper is used for improving the impedance matching. Moreover, an air gap is inserted between the water patch and the substrate to improve radiation efficiency. Impedance bandwidth of the antenna achieves 20% and radiation efficiency is 50%-75%.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122042035","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563333
Yang Yaozhou, Feng Gui-rong, Lei Chen, Yue Hao, Xue Run-dong
A broadband circularly polarized (CP) monopole antenna with an annular open-loop is presented. By introducing an gap on the loop, the presented antenna features broadband and produces a bidirectional CP radiation. The simulated results show that the proposed antenna has the advantage of broadband CP characteristics in terms of an impedance bandwidth with $mathbf{S11 < -10 dB}$ of 96.1% from 2.7 to 7.7 GHz and a 3-dB axial ratio (AR) bandwidth of 81.3% in the frequency range of 2.7 to 6.4 GHz.
{"title":"Broadband Circularly Polarized Monopole Antenna with an Open loop","authors":"Yang Yaozhou, Feng Gui-rong, Lei Chen, Yue Hao, Xue Run-dong","doi":"10.1109/ICMMT.2018.8563333","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563333","url":null,"abstract":"A broadband circularly polarized (CP) monopole antenna with an annular open-loop is presented. By introducing an gap on the loop, the presented antenna features broadband and produces a bidirectional CP radiation. The simulated results show that the proposed antenna has the advantage of broadband CP characteristics in terms of an impedance bandwidth with $mathbf{S11 < -10 dB}$ of 96.1% from 2.7 to 7.7 GHz and a 3-dB axial ratio (AR) bandwidth of 81.3% in the frequency range of 2.7 to 6.4 GHz.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123783844","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563277
Juan-Feng Zhu, C. Du, Shi Pan, Pu‐Kun Liu
In this paper, a metallic grating structure with varying depth is presented for beam-wave interaction. The DC electron beam flies above the structure and backward spoof surface plasmon mode is excited. When the electromagnetic power flow reaches the left-hand of grating structure, it is trapped down and reflected to propagate forwardly due to rainbow trapped storage of terahertz wave. With energy reflecting and transmitting at both ends of this structure, a regenerate feedback is realized and a THz pulse is amplified repeatedly. This system achieved the maximum output power over 1.5 W after four times of reflections at 1 THz with a 3 kV/20mA electron beam.
{"title":"A Regenerate Feedback Terahertz Electronic Source Using Rainbow-Trapping Grating","authors":"Juan-Feng Zhu, C. Du, Shi Pan, Pu‐Kun Liu","doi":"10.1109/ICMMT.2018.8563277","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563277","url":null,"abstract":"In this paper, a metallic grating structure with varying depth is presented for beam-wave interaction. The DC electron beam flies above the structure and backward spoof surface plasmon mode is excited. When the electromagnetic power flow reaches the left-hand of grating structure, it is trapped down and reflected to propagate forwardly due to rainbow trapped storage of terahertz wave. With energy reflecting and transmitting at both ends of this structure, a regenerate feedback is realized and a THz pulse is amplified repeatedly. This system achieved the maximum output power over 1.5 W after four times of reflections at 1 THz with a 3 kV/20mA electron beam.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125786049","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 the millimeter-wave (mmWave) propagation characteristics and statistical channel model parameters at 28 GHz for fifth generation (5G) wireless communication systems. The propagation characteristics of mmWave signal in the cross-corridor environments are analyzed based on the method of shooting and bouncing ray tracing/image (SBR/IM). Propagation characteristics, including path loss models, root-mean-square (RMS) delay spread, Ricean K-factor, and correlation coefficients between channel parameters are investigated. Moreover, path loss models are established for the cross-corridor channel. Results show that the path loss exponents (PLEs) vary between 1.37 and 1.75 for line-of-sight (LOS) scenarios and the PLEs vary between 2.90 and 5.09 for non-line-of-sight (NLOS) scenarios. The statistics of channel parameters are useful for 5G communication system development and deployment.
{"title":"Millimeter-Wave Channel Simulation and Statistical Channel Model in the Cross-Corridor Environment at 28 GHz for 5G Wireless System","authors":"Shuangde Li, Yuanjian Liu, Leke Lin, X. Sun, Shan Yang, Dingming Sun","doi":"10.1109/ICMMT.2018.8563957","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563957","url":null,"abstract":"This paper presents the millimeter-wave (mmWave) propagation characteristics and statistical channel model parameters at 28 GHz for fifth generation (5G) wireless communication systems. The propagation characteristics of mmWave signal in the cross-corridor environments are analyzed based on the method of shooting and bouncing ray tracing/image (SBR/IM). Propagation characteristics, including path loss models, root-mean-square (RMS) delay spread, Ricean K-factor, and correlation coefficients between channel parameters are investigated. Moreover, path loss models are established for the cross-corridor channel. Results show that the path loss exponents (PLEs) vary between 1.37 and 1.75 for line-of-sight (LOS) scenarios and the PLEs vary between 2.90 and 5.09 for non-line-of-sight (NLOS) scenarios. The statistics of channel parameters are useful for 5G communication system development and deployment.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"28 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120848506","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563842
Shutao Fang, Z. Xue, Weiming Li, W. Ren
In this paper, a method using genetic algorithm to suppress the grating lobe of a wideband planar array is presented. With the alteration of operating frequency point, the electrical size of distance between two adjacent elements will change thereupon. This approach achieves the suppression of grating lobe at high operating frequency point, whose highest sidelobe level is around −10 dB, with little influence to array's radiation characteristic of lower frequency point. For this approach's practicability, simple dipole antenna is adopted as the array's element to check out whether the approach keeps validity by simulation.
{"title":"Grating Lobe Suppression of Planar Array with Large Inter-Element Spacing by Using Genetic Algorithm","authors":"Shutao Fang, Z. Xue, Weiming Li, W. Ren","doi":"10.1109/ICMMT.2018.8563842","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563842","url":null,"abstract":"In this paper, a method using genetic algorithm to suppress the grating lobe of a wideband planar array is presented. With the alteration of operating frequency point, the electrical size of distance between two adjacent elements will change thereupon. This approach achieves the suppression of grating lobe at high operating frequency point, whose highest sidelobe level is around −10 dB, with little influence to array's radiation characteristic of lower frequency point. For this approach's practicability, simple dipole antenna is adopted as the array's element to check out whether the approach keeps validity by simulation.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122608720","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563472
Qun Li, Yonghong Zhang, Chung-Tse Michael Wu
This paper designs a wide-angle frequency scanning metamaterial (MTM) leaky wave antenna (LWA) array for automotive radars. The gap capacitors and the vialess open stub-loaded resonators are used to construct the frequency scanning MTM LWA array. the propagation constant of the MTM LWA array is able to change from negative to positive values as the frequency is increased, resulting in backward to forward beam scanning. Compared to mechanical beam scanning arrays and phased arrays, the frequency scanning MTM LWA arrays have advantages of reducing the system complexity, light weight and low cost. The presented MTM LWA array has a maximum gain of 13 dB and wide scanning angle from −60°to +80° as the frequency varies from 23.5 to 25.6 GHz which is well suited for automotive radar applications.
{"title":"Wide-Angle Frequent Scanning Metamaterial Leaky Wave Antenna Array for Automotive Radars","authors":"Qun Li, Yonghong Zhang, Chung-Tse Michael Wu","doi":"10.1109/ICMMT.2018.8563472","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563472","url":null,"abstract":"This paper designs a wide-angle frequency scanning metamaterial (MTM) leaky wave antenna (LWA) array for automotive radars. The gap capacitors and the vialess open stub-loaded resonators are used to construct the frequency scanning MTM LWA array. the propagation constant of the MTM LWA array is able to change from negative to positive values as the frequency is increased, resulting in backward to forward beam scanning. Compared to mechanical beam scanning arrays and phased arrays, the frequency scanning MTM LWA arrays have advantages of reducing the system complexity, light weight and low cost. The presented MTM LWA array has a maximum gain of 13 dB and wide scanning angle from −60°to +80° as the frequency varies from 23.5 to 25.6 GHz which is well suited for automotive radar applications.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125228587","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 : 2018-05-07DOI: 10.1109/ICMMT.2018.8563434
X. Zhang, Linsheng Wu, Yunlu Tang, J. Mao
A filtering antenna is proposed with substrate integrated waveguide and patch resonators in low temperature co-fired ceramic. It is design with the topology of coupled resonators embedded with a lowpass filter. Due to the two 45-degree linearly polarized patches, the measured gain is 7.0 dBi with the 3-dB beamwidth of 48° and the antenna efficiency of about 70% around 28 GHz. The passband bandwidth is over 2.5 GHz. The out-of-band rejection can reach 18 dBc up to 40 GHz. According to the stacked antenna-in-package form, the volume of the overall component is only $12times 6times 1.6 mathrm{mm}^{3}$.
{"title":"Filtering Antenna Based on Substrate Integrated Waveguide and Patch Resonators in LTCC","authors":"X. Zhang, Linsheng Wu, Yunlu Tang, J. Mao","doi":"10.1109/ICMMT.2018.8563434","DOIUrl":"https://doi.org/10.1109/ICMMT.2018.8563434","url":null,"abstract":"A filtering antenna is proposed with substrate integrated waveguide and patch resonators in low temperature co-fired ceramic. It is design with the topology of coupled resonators embedded with a lowpass filter. Due to the two 45-degree linearly polarized patches, the measured gain is 7.0 dBi with the 3-dB beamwidth of 48° and the antenna efficiency of about 70% around 28 GHz. The passband bandwidth is over 2.5 GHz. The out-of-band rejection can reach 18 dBc up to 40 GHz. According to the stacked antenna-in-package form, the volume of the overall component is only $12times 6times 1.6 mathrm{mm}^{3}$.","PeriodicalId":190601,"journal":{"name":"2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125864170","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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