Pub Date : 2015-05-26DOI: 10.1109/APEMC.2015.7175296
C. Sim, Yuan-Lung Lee
An LTE (Long Term Evolution) antenna design with dual-band operation for laptop computer application is proposed. The antenna size of this proposed design is 40×15×0.8 mm3, and it is mounted above a ground plane of size 200×150 mm2. The lower and upper operating bands of the proposed antenna are with impedance bandwidth (VSWR 3:1) of 13.1% (695-790 MHz) and 37.6% (2200-3120 MHz), respectively. Furthermore, minimum radiation efficiencies of up to 56% were also measured within the three LTE bands.
{"title":"Dual-band planar antenna for LTE 700/2300/2500 operation in laptop computer","authors":"C. Sim, Yuan-Lung Lee","doi":"10.1109/APEMC.2015.7175296","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175296","url":null,"abstract":"An LTE (Long Term Evolution) antenna design with dual-band operation for laptop computer application is proposed. The antenna size of this proposed design is 40×15×0.8 mm3, and it is mounted above a ground plane of size 200×150 mm2. The lower and upper operating bands of the proposed antenna are with impedance bandwidth (VSWR 3:1) of 13.1% (695-790 MHz) and 37.6% (2200-3120 MHz), respectively. Furthermore, minimum radiation efficiencies of up to 56% were also measured within the three LTE bands.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"420 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122861633","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}
A compact solution for filtering common-mode noise on high-speed digital interfaces is proposed and realized as a 6-pin SMD component. The component size is only 2 × 1.2 mm2. The measured common-mode suppression has a high-level rejection over 20 dB at 1.575 and 2.45 GHz, corresponding to GPS and WLAN bands. Moreover, differential-mode signals preserve well up to 10 GHz. To validate its capability, in situ experiments are demonstrated with USB 3.0 connector. Far-field and near-field emissions are indeed reduced, which implies the distances between RF antennas and high-speed connectors can be shrunk by using the proposed solution.
{"title":"A SMD-type filter solution for EMI/RFI mitigation on high-speed digital interfaces and its application","authors":"Yen-Ju Lin, Ying-Cheng Tseng, Chih-Ying Hsiao, Tzong-Lin Wu","doi":"10.1109/APEMC.2015.7175280","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175280","url":null,"abstract":"A compact solution for filtering common-mode noise on high-speed digital interfaces is proposed and realized as a 6-pin SMD component. The component size is only 2 × 1.2 mm2. The measured common-mode suppression has a high-level rejection over 20 dB at 1.575 and 2.45 GHz, corresponding to GPS and WLAN bands. Moreover, differential-mode signals preserve well up to 10 GHz. To validate its capability, in situ experiments are demonstrated with USB 3.0 connector. Far-field and near-field emissions are indeed reduced, which implies the distances between RF antennas and high-speed connectors can be shrunk by using the proposed solution.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122872716","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175376
A. Smorgonskiy, N. Mora, Farhad Raclndi, M. Rubinstein, K. Sheshyekani, N. Korovkin
In this paper, we report the results of wind turbine grounding system impedance measurements performed at the Mont-Crosin wind park in Switzerland. Experiments were carried out twice: (1) when only the construction of the wind turbine foundation had been completed, and (2) once the installation of the rest of the wind turbine was finished: tower, nacelle and blades. The transient grounding impedance was evaluated directly in the time domain by solving Duhamel's integral equation. The influence of the presence of the wind turbine is found to be negligible on the grounding impedance at low frequencies. However, at frequencies beyond 150 kHz or so, the measurement of the grounding impedance is significantly affected by the presence of the wind turbine.
{"title":"Measurements of transient grounding impedance of a wind turbine at the Mont-Crosin wind park","authors":"A. Smorgonskiy, N. Mora, Farhad Raclndi, M. Rubinstein, K. Sheshyekani, N. Korovkin","doi":"10.1109/APEMC.2015.7175376","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175376","url":null,"abstract":"In this paper, we report the results of wind turbine grounding system impedance measurements performed at the Mont-Crosin wind park in Switzerland. Experiments were carried out twice: (1) when only the construction of the wind turbine foundation had been completed, and (2) once the installation of the rest of the wind turbine was finished: tower, nacelle and blades. The transient grounding impedance was evaluated directly in the time domain by solving Duhamel's integral equation. The influence of the presence of the wind turbine is found to be negligible on the grounding impedance at low frequencies. However, at frequencies beyond 150 kHz or so, the measurement of the grounding impedance is significantly affected by the presence of the wind turbine.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128934757","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175350
T. Su, J. Hsu, Kai Xiao, Y. L. Li
In PC/Server industry, simulation process is usually separated into pre-layout and post-layout phase. The pre-layout simulation focus in finding the solution space or choosing a better topology [1], [2]. For post-layout simulation, extracting 3 or 5 pairs of the channel model and conducting the simulation analysis is widely used. However, it requires a basic understanding of the layout. Otherwise the channel which is extracted may not be the best one to represent the worst scenario in the reality. The system level interconnect electrical performance characterization, which can consider a whole interface or even multiple interfaces, become an efficient way, especially estimating the risk of an out-of-guideline design. In this paper, a process with less human interaction is demonstrated. This method can relief the burden in choosing the representative channel from the layout and allow the designer to focus in improving the layout quality in these problematic areas.
{"title":"System level interconnect electrical performance characterization","authors":"T. Su, J. Hsu, Kai Xiao, Y. L. Li","doi":"10.1109/APEMC.2015.7175350","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175350","url":null,"abstract":"In PC/Server industry, simulation process is usually separated into pre-layout and post-layout phase. The pre-layout simulation focus in finding the solution space or choosing a better topology [1], [2]. For post-layout simulation, extracting 3 or 5 pairs of the channel model and conducting the simulation analysis is widely used. However, it requires a basic understanding of the layout. Otherwise the channel which is extracted may not be the best one to represent the worst scenario in the reality. The system level interconnect electrical performance characterization, which can consider a whole interface or even multiple interfaces, become an efficient way, especially estimating the risk of an out-of-guideline design. In this paper, a process with less human interaction is demonstrated. This method can relief the burden in choosing the representative channel from the layout and allow the designer to focus in improving the layout quality in these problematic areas.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129229090","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175358
F. Xiao, K. Murano, Y. Kami
Nowadays differential traces as interconnects are extensively used since the electromagnetic radiation can be ideally cancelled by the out-of-phase and same amplitude signals on the two tightly coupled differential traces. However, the ability of differential pair in mitigating EM interference (EMI) may be seriously jeopardized by possible unbalance of the excitation, since both the common mode and the differential mode current may introduced to the differential pair. In this work, based on the mode decomposition technique and the far-field Green's function, an analytical solution of the radiated electric field from coupled traces is formulated by taking both the common and differential-mode currents into consideration. Thus the radiated electric field from any arbitrary excitation can be easily calculated. The validity of the analytical formulation is verified by comparing the calculated results with the full-wave simulation results.
{"title":"Analytical solution of the electromagnetic radiation from coupled differential microstrip pairs","authors":"F. Xiao, K. Murano, Y. Kami","doi":"10.1109/APEMC.2015.7175358","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175358","url":null,"abstract":"Nowadays differential traces as interconnects are extensively used since the electromagnetic radiation can be ideally cancelled by the out-of-phase and same amplitude signals on the two tightly coupled differential traces. However, the ability of differential pair in mitigating EM interference (EMI) may be seriously jeopardized by possible unbalance of the excitation, since both the common mode and the differential mode current may introduced to the differential pair. In this work, based on the mode decomposition technique and the far-field Green's function, an analytical solution of the radiated electric field from coupled traces is formulated by taking both the common and differential-mode currents into consideration. Thus the radiated electric field from any arbitrary excitation can be easily calculated. The validity of the analytical formulation is verified by comparing the calculated results with the full-wave simulation results.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115321850","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175363
R. Wen
This paper explored the possibility to make use of a reverberation chamber for vehicle level RF emission measurement. A chamber calibration and site attenuation evaluation method is described along with a comparison of measurement results with ALSE. The RF radiated emission test of a passenger vehicle is conducted in both reverberation chamber and ALSE respectively, and the correlation between reverberation chamber and ALSE is presented.
{"title":"Using reverberation chamber for vehicle radiated emission measurement","authors":"R. Wen","doi":"10.1109/APEMC.2015.7175363","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175363","url":null,"abstract":"This paper explored the possibility to make use of a reverberation chamber for vehicle level RF emission measurement. A chamber calibration and site attenuation evaluation method is described along with a comparison of measurement results with ALSE. The RF radiated emission test of a passenger vehicle is conducted in both reverberation chamber and ALSE respectively, and the correlation between reverberation chamber and ALSE is presented.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127438197","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175324
Heegon Kim, Kiyeong Kim, Sumin Choi, Hyunsuk Lee, Hyungsoo Kim, Yunsaing Kim, Joungho Kim
In this work, a fast and accurate statistical eye-diagram estimation method for high-speed single-ended channel including non-linear pseudo differential receiver buffer circuit is proposed. For accurate estimation, the analytical model of the pseudo differential receiver buffer output voltage that includes impacts of external noises is derived based on piece-wise linear approximated MOS I-V curves. Moreover, the calculation based on compact input set whose components are possible receiver input waveforms for one unit interval enables the proposed method to calculate BER within short time. Accuracy and fast estimation time of the proposed method are successfully verified by comparing to the transient simulation results.
{"title":"A fast and accurate statistical eye-diagram estimation method for high-speed channel including non-linear receiver buffer circuit","authors":"Heegon Kim, Kiyeong Kim, Sumin Choi, Hyunsuk Lee, Hyungsoo Kim, Yunsaing Kim, Joungho Kim","doi":"10.1109/APEMC.2015.7175324","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175324","url":null,"abstract":"In this work, a fast and accurate statistical eye-diagram estimation method for high-speed single-ended channel including non-linear pseudo differential receiver buffer circuit is proposed. For accurate estimation, the analytical model of the pseudo differential receiver buffer output voltage that includes impacts of external noises is derived based on piece-wise linear approximated MOS I-V curves. Moreover, the calculation based on compact input set whose components are possible receiver input waveforms for one unit interval enables the proposed method to calculate BER within short time. Accuracy and fast estimation time of the proposed method are successfully verified by comparing to the transient simulation results.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"163 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125952567","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175394
A. Ubin, R. Vogt-Ardatjew, F. Leferink, M. Jenu, S. van de Beek
A reverberation chamber (RC), is an economical facility in EMC, because it allows many directions for illumination an object with a higher field strength compared to conventional techniques, for the same input power. For emission measurements there is no need for moving an antenna. The field uniformity and statistical behaviour of the field are important in a RC. This paper presents an evaluation of the performance for three different stirrer designs inside a 1.00 m × 1.30 m × 1.50 m reverberation chamber. The evaluation was done in the frequency range from 300 MHz to 1000 MHz using both simulation and measurement results.
混响室(RC)在电磁兼容中是一种经济的设备，因为在相同的输入功率下，与传统技术相比，它允许多个方向以更高的场强照射物体。对于发射测量，不需要移动天线。在RC中，场均匀性和场的统计特性是很重要的。本文在1.00 m × 1.30 m × 1.50 m混响室内对三种不同设计的搅拌器进行了性能评价。利用仿真和测量结果，在300 ~ 1000 MHz的频率范围内进行了评估。
{"title":"Statistical analysis of three different stirrer designs in a reverberation chamber","authors":"A. Ubin, R. Vogt-Ardatjew, F. Leferink, M. Jenu, S. van de Beek","doi":"10.1109/APEMC.2015.7175394","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175394","url":null,"abstract":"A reverberation chamber (RC), is an economical facility in EMC, because it allows many directions for illumination an object with a higher field strength compared to conventional techniques, for the same input power. For emission measurements there is no need for moving an antenna. The field uniformity and statistical behaviour of the field are important in a RC. This paper presents an evaluation of the performance for three different stirrer designs inside a 1.00 m × 1.30 m × 1.50 m reverberation chamber. The evaluation was done in the frequency range from 300 MHz to 1000 MHz using both simulation and measurement results.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126788749","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175238
Su-Mei Shen, I. Chen, C. Peng, D. Lin
In this article, the ability of a single layer strip fed printed monopole antenna, which is composed of top-loading, asymmetric co-planar waveguide (ACPW) and stepped-feeding structure, to operate at four wide frequency bands (698MHz~960MHz, 1710MHz~2690MHz, 2400MHz~2500MHz and 3410~3600MHz) to cover LTE and WLAN operation has been demonstrated. The finite-size ground-strip of ACPW is not a perfect-ground, it has significant reactance. Therefore, the result of printed ground-strip versus monopole antenna should be regarded as an additional planar radiator rather than a normal ground-plane. A prototype of the proposed antenna with 106 mm in length, 0.8 mm in thickness and IS mm in width is fabricated and experimentally investigated. The experimental results indicate that the VSWR 2.5:1 bandwidths achieved were 66%, 29%, 24% and 14% at 750MHz, 1900MHz, 2500MHz and 3550MHz, respectively. Experimental results are shown to verify the validity of theoretical work.
{"title":"Printed ACPW feed monopole antenna for LTE /WLAN applications","authors":"Su-Mei Shen, I. Chen, C. Peng, D. Lin","doi":"10.1109/APEMC.2015.7175238","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175238","url":null,"abstract":"In this article, the ability of a single layer strip fed printed monopole antenna, which is composed of top-loading, asymmetric co-planar waveguide (ACPW) and stepped-feeding structure, to operate at four wide frequency bands (698MHz~960MHz, 1710MHz~2690MHz, 2400MHz~2500MHz and 3410~3600MHz) to cover LTE and WLAN operation has been demonstrated. The finite-size ground-strip of ACPW is not a perfect-ground, it has significant reactance. Therefore, the result of printed ground-strip versus monopole antenna should be regarded as an additional planar radiator rather than a normal ground-plane. A prototype of the proposed antenna with 106 mm in length, 0.8 mm in thickness and IS mm in width is fabricated and experimentally investigated. The experimental results indicate that the VSWR 2.5:1 bandwidths achieved were 66%, 29%, 24% and 14% at 750MHz, 1900MHz, 2500MHz and 3550MHz, respectively. Experimental results are shown to verify the validity of theoretical work.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126832882","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175301
Yin-Cheng Chang, Ping-Yi Wang, S. Hsu, Mao-Hsu Yen, Yen-Tang Chang, Chiu-Kuo Chen, D. Chang
A multifunction test board is designed for a microcontroller (MCU) testing. This board can be used to verify the function of the MCU by running several basic instructions. Furthermore, six different IC-EMC measurements complied with IEC standards can be performed on the same board by careful design and the preservation of test points with certified off-board probes. The experimental results show the capability of providing the confident measurements up to 1 GHz. Meanwhile, the cost of performing a bunch of different testing methods on implementing various test boards is reduced.
{"title":"Design of the multifunction IC-EMC test board with off-board probes for evaluating a microcontroller","authors":"Yin-Cheng Chang, Ping-Yi Wang, S. Hsu, Mao-Hsu Yen, Yen-Tang Chang, Chiu-Kuo Chen, D. Chang","doi":"10.1109/APEMC.2015.7175301","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175301","url":null,"abstract":"A multifunction test board is designed for a microcontroller (MCU) testing. This board can be used to verify the function of the MCU by running several basic instructions. Furthermore, six different IC-EMC measurements complied with IEC standards can be performed on the same board by careful design and the preservation of test points with certified off-board probes. The experimental results show the capability of providing the confident measurements up to 1 GHz. Meanwhile, the cost of performing a bunch of different testing methods on implementing various test boards is reduced.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122171305","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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