Pub Date : 2006-10-01DOI: 10.1109/ISAPE.2006.353332
S. Theerawisitpong, K. Karnjanasit
This research presents a compact modified-meander resonator, has applied to microwave narrow bandpass filter in 3G mobile based-station which operates at 1.95 GHz and 60 MHz of bandwidth. The features of 26-percent smaller-sized and harmonic-suppression have proposed. The reasonable of harmonic-suppression has demonstrated.
{"title":"A Compact Modified-Meander Resonator for Microwave Bandpass Filter with Harmonic-Suppression","authors":"S. Theerawisitpong, K. Karnjanasit","doi":"10.1109/ISAPE.2006.353332","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353332","url":null,"abstract":"This research presents a compact modified-meander resonator, has applied to microwave narrow bandpass filter in 3G mobile based-station which operates at 1.95 GHz and 60 MHz of bandwidth. The features of 26-percent smaller-sized and harmonic-suppression have proposed. The reasonable of harmonic-suppression has demonstrated.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130112116","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353406
Tianling Zhang, Zehong Yan
The design of a Ka dual-band circular polarizer by inserting a dielectric septum in the middle of the circular waveguide is discussed here. The dielectric septum is located in fixing slots, and by adjusting the dimension of the dual-compensation slots which are built in the orthogonal plane, the phase difference of 90deg at the center frequency for the dual-band can be achieved. Furthermore, the gradual changing structures at both ends of the dielectric septum are built for impedance matching for both Ex and Ey polarizations. The simple structure of this kind of polarizer can reduce the influence of manufacturing inaccuracy in the Ka-band. The measured phase difference is within 90degplusmn 4.5deg for both bands. In addition, the return losses for both Ex and Ey polarizations are better than -15 dB.
{"title":"A Ka Dual-Band Circular Waveguide Polarizer","authors":"Tianling Zhang, Zehong Yan","doi":"10.1109/ISAPE.2006.353406","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353406","url":null,"abstract":"The design of a Ka dual-band circular polarizer by inserting a dielectric septum in the middle of the circular waveguide is discussed here. The dielectric septum is located in fixing slots, and by adjusting the dimension of the dual-compensation slots which are built in the orthogonal plane, the phase difference of 90deg at the center frequency for the dual-band can be achieved. Furthermore, the gradual changing structures at both ends of the dielectric septum are built for impedance matching for both Ex and Ey polarizations. The simple structure of this kind of polarizer can reduce the influence of manufacturing inaccuracy in the Ka-band. The measured phase difference is within 90degplusmn 4.5deg for both bands. In addition, the return losses for both Ex and Ey polarizations are better than -15 dB.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130279886","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353371
Jwo-Shiun Sun, Guan-Yu Chen, Sen-Yi Huang, Chuang-Jen Huang, Kuo-Liang Wu, Y. Chen, Cheng-Hung Lin
The design relates generally to the field on antennas and more specifically, to a low profile linear polarized H-shape dipole antenna. The antenna includes a printed circuit board that has a dielectric substrate provided with H-shape face and one dipole element formed on the dielectric substrate. The printed circuit board is also provided with a balance to unbalanced feed network that is operatively connected to the H-shape dipole arm element. In this design, the H-shape dipole antenna fed network with tapered balun is studied. The design and experimental results of low profile microstrip planar dipole antenna with tapered balun shows fairly good performances in this paper. The feed network of the design with wider bandwidth and lower power loss tapered microstrip line to overlap coplanar stripline (CPS) transition that provided unbalanced to balanced line with balanced equal power output of phase. The achieved planar dipole antenna exhibits 421 MHz for VSWR = 2 bandwidths. Full-wave EM analyses shows good agreement with those experimental data.
{"title":"The Omni-directional Dipole Antenna Structure and Design","authors":"Jwo-Shiun Sun, Guan-Yu Chen, Sen-Yi Huang, Chuang-Jen Huang, Kuo-Liang Wu, Y. Chen, Cheng-Hung Lin","doi":"10.1109/ISAPE.2006.353371","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353371","url":null,"abstract":"The design relates generally to the field on antennas and more specifically, to a low profile linear polarized H-shape dipole antenna. The antenna includes a printed circuit board that has a dielectric substrate provided with H-shape face and one dipole element formed on the dielectric substrate. The printed circuit board is also provided with a balance to unbalanced feed network that is operatively connected to the H-shape dipole arm element. In this design, the H-shape dipole antenna fed network with tapered balun is studied. The design and experimental results of low profile microstrip planar dipole antenna with tapered balun shows fairly good performances in this paper. The feed network of the design with wider bandwidth and lower power loss tapered microstrip line to overlap coplanar stripline (CPS) transition that provided unbalanced to balanced line with balanced equal power output of phase. The achieved planar dipole antenna exhibits 421 MHz for VSWR = 2 bandwidths. Full-wave EM analyses shows good agreement with those experimental data.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128944841","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353315
Xiaomin Jin, K.D. Lystad, M. Sendaula
Electromagnetic crosstalk poses a serious problem in advanced serial communication modules. This paper focuses on the primary sources of crosstalk penalty in a 2.5 Gb/s optic transceiver and a lOGb/s optic transponder. A novel method to quantify the crosstalk penalty by observing a receiver's bit-error-ratio (BER) versus transmitter to receiver signal phase is proposed. A coupled microstrip transmission line model is also explored to demonstrate inductive crosstalk coupling.
{"title":"Electromagnetic Crosstalk Penalty in 2.5GB/s and 10GB/S Serial optical modules","authors":"Xiaomin Jin, K.D. Lystad, M. Sendaula","doi":"10.1109/ISAPE.2006.353315","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353315","url":null,"abstract":"Electromagnetic crosstalk poses a serious problem in advanced serial communication modules. This paper focuses on the primary sources of crosstalk penalty in a 2.5 Gb/s optic transceiver and a lOGb/s optic transponder. A novel method to quantify the crosstalk penalty by observing a receiver's bit-error-ratio (BER) versus transmitter to receiver signal phase is proposed. A coupled microstrip transmission line model is also explored to demonstrate inductive crosstalk coupling.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130835155","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353458
Yanmin Yu, Wen Wu
Microstrip antenna (MSA) is quite flexible and has been used as conformal antenna mounted on arbitrary surface. Conformal finite-difference time-domain (CFDTD) method has shown excellent versatility. In this paper, CFDTD is applied to analyze microstrip patch antenna mounted on conical surface. Based on the analysis, an omnidirectional 4times4 millimeter wave (MMW) conformal microstrip antenna array which works at 35 GHz is developed. The measured data shows good agreement with simulation.
{"title":"Analysis of Millimeter Wave Conformal Antenna Array on Conical Surface","authors":"Yanmin Yu, Wen Wu","doi":"10.1109/ISAPE.2006.353458","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353458","url":null,"abstract":"Microstrip antenna (MSA) is quite flexible and has been used as conformal antenna mounted on arbitrary surface. Conformal finite-difference time-domain (CFDTD) method has shown excellent versatility. In this paper, CFDTD is applied to analyze microstrip patch antenna mounted on conical surface. Based on the analysis, an omnidirectional 4times4 millimeter wave (MMW) conformal microstrip antenna array which works at 35 GHz is developed. The measured data shows good agreement with simulation.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132176338","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353526
Zhao Li, Ke Xi-zheng, Liu Jian
In this paper, we analyzed the key techniques of wireless optical communication system, and established the typical weather model by outside survey in different weather conditions, designed parameters of the source coding and the channel coding. Simulated it by Matlab. The emulational results indicated that the communication capability was enhanced by using 256-PPM (the source coding) and RSldr 255,223ldr (the channel coding).
{"title":"The model and key technique researches of atmosphere laser communication system","authors":"Zhao Li, Ke Xi-zheng, Liu Jian","doi":"10.1109/ISAPE.2006.353526","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353526","url":null,"abstract":"In this paper, we analyzed the key techniques of wireless optical communication system, and established the typical weather model by outside survey in different weather conditions, designed parameters of the source coding and the channel coding. Simulated it by Matlab. The emulational results indicated that the communication capability was enhanced by using 256-PPM (the source coding) and RSldr 255,223ldr (the channel coding).","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127058235","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353365
Jianxin Guo, Lei Jiang, Yan-xin Gou, Hongyi Yu
The presence of gain and phase errors between array elements and corresponding channels is known to significantly degrade the performance of most high resolution direction of arrival (DOA) estimation algorithms. In this paper, a simple calibration scheme is proposed to eliminate the errors existing in the multiple channels of a direction finding (DF) system equipped with a uniform circular array (UCA). Based on differential calculations and second-order statistics, the new calibration method can compensate the differences between the channels effectively with lower implementation complexity. The design process of the scheme is described and discussed in detail. Both theoretical analyses and Monte-Carlo simulations are also provided to demonstrate the effectiveness and feasibility of the proposed scheme.
{"title":"A Simple Differential Calibration Scheme for Multi-channel Errors in DOA Estimation","authors":"Jianxin Guo, Lei Jiang, Yan-xin Gou, Hongyi Yu","doi":"10.1109/ISAPE.2006.353365","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353365","url":null,"abstract":"The presence of gain and phase errors between array elements and corresponding channels is known to significantly degrade the performance of most high resolution direction of arrival (DOA) estimation algorithms. In this paper, a simple calibration scheme is proposed to eliminate the errors existing in the multiple channels of a direction finding (DF) system equipped with a uniform circular array (UCA). Based on differential calculations and second-order statistics, the new calibration method can compensate the differences between the channels effectively with lower implementation complexity. The design process of the scheme is described and discussed in detail. Both theoretical analyses and Monte-Carlo simulations are also provided to demonstrate the effectiveness and feasibility of the proposed scheme.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114341778","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353481
W. Jiayin, Shi Jia-ming, Wang Jiachun, Xu Bo
The dispersion of the axially symmetrical surface wave along the plasma column is studied. The wave number, deduced from the dispersion equation, is used to explain the fact that the plasma surface wave, with a frequency lower than the plasma frequency, propagates with a speed near that of the light along the plasma column, just as it travels along the metal- dielectric interface. That is to say, the plasma column can work as an antenna element. By using the methods of analyzing the antenna with an impedance distribution, the relationship between the parameters of the plasma and the radiation patterns of the unipole plasma antenna is revealed on the VHF band. The results indicate that, for a one-meter-long unipole plasma antenna, when ne< 1018 m-3 and 106 Hz < vm < 109 Hz , its radiation pattern is similar to that of the metal antenna at the low side of the VHF waveband. When ne > 2 times 1017 m-3 and vm < 109 Hz, its radiation pattern is in conformity with that of the metal antenna at the high side of the VHF waveband.
研究了轴对称表面波沿等离子体柱的色散。从色散方程推导出的波数用来解释这样一个事实，即频率低于等离子体频率的等离子体表面波以接近光的速度沿着等离子体柱传播，就像它沿着金属-介电界面传播一样。也就是说，等离子体柱可以作为天线元件。采用阻抗分布分析方法，揭示了等离子体参数与单极等离子体天线在甚高频波段的辐射方向图之间的关系。结果表明，当ne< 1018 m-3, 106 Hz < vm < 109 Hz时，1m长的单极等离子体天线在VHF频段低侧的辐射方向图与金属天线相似。当ne > 2 × 1017 m-3, vm < 109 Hz时，其辐射方向图与金属天线在VHF波段高端的辐射方向图一致。
{"title":"Study of the Radiation Pattern of the Unipole Plasma Antenna","authors":"W. Jiayin, Shi Jia-ming, Wang Jiachun, Xu Bo","doi":"10.1109/ISAPE.2006.353481","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353481","url":null,"abstract":"The dispersion of the axially symmetrical surface wave along the plasma column is studied. The wave number, deduced from the dispersion equation, is used to explain the fact that the plasma surface wave, with a frequency lower than the plasma frequency, propagates with a speed near that of the light along the plasma column, just as it travels along the metal- dielectric interface. That is to say, the plasma column can work as an antenna element. By using the methods of analyzing the antenna with an impedance distribution, the relationship between the parameters of the plasma and the radiation patterns of the unipole plasma antenna is revealed on the VHF band. The results indicate that, for a one-meter-long unipole plasma antenna, when n<sub>e</sub>< 10<sup>18</sup> m<sup>-3</sup> and 10<sup>6</sup> Hz < v<sub>m</sub> < 10<sup>9</sup> Hz , its radiation pattern is similar to that of the metal antenna at the low side of the VHF waveband. When n<sub>e</sub> > 2 times 10<sup>17</sup> m<sup>-3</sup> and v<sub>m</sub> < 10<sup>9</sup> Hz, its radiation pattern is in conformity with that of the metal antenna at the high side of the VHF waveband.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114707059","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353520
C. Jixiang, Zhong Hai-yang
From simple theory of Chapman, we deduce a formula to calculate Doppler-shift arising from change of the solar-angle. We compare the result of theory with new material-Doppler records of BPM and JJY ,and analyze the reasons of producing difference.
{"title":"Using New Material to Analyze Doppler-shift Arising From Change of the Solar-angle","authors":"C. Jixiang, Zhong Hai-yang","doi":"10.1109/ISAPE.2006.353520","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353520","url":null,"abstract":"From simple theory of Chapman, we deduce a formula to calculate Doppler-shift arising from change of the solar-angle. We compare the result of theory with new material-Doppler records of BPM and JJY ,and analyze the reasons of producing difference.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"111 41","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120823380","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 : 2006-10-01DOI: 10.1109/ISAPE.2006.353482
Wang Yazhou, Su Donglin, Xiao Yongxuan
The design of a broadband square microstrip antenna with circular polarization radiation is presented in this paper. The antenna comprises a thick air substrate and single square microstrip radiating patch, which is excited by dual capacitive-coupled feed disks connected to a Wilkinson power divider having equal amplitude and a 90deg phase shift between its two outputs. The experimental results show that the proposed antenna is able to achieve an impedance bandwidth of 69% for VSWR less than 2 and a 3 dB axial-ratio bandwidth about 23%.
{"title":"Broadband circularly polarized square microstrip antenna","authors":"Wang Yazhou, Su Donglin, Xiao Yongxuan","doi":"10.1109/ISAPE.2006.353482","DOIUrl":"https://doi.org/10.1109/ISAPE.2006.353482","url":null,"abstract":"The design of a broadband square microstrip antenna with circular polarization radiation is presented in this paper. The antenna comprises a thick air substrate and single square microstrip radiating patch, which is excited by dual capacitive-coupled feed disks connected to a Wilkinson power divider having equal amplitude and a 90deg phase shift between its two outputs. The experimental results show that the proposed antenna is able to achieve an impedance bandwidth of 69% for VSWR less than 2 and a 3 dB axial-ratio bandwidth about 23%.","PeriodicalId":113164,"journal":{"name":"2006 7th International Symposium on Antennas, Propagation & EM Theory","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123724401","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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