Pub Date : 2017-10-01DOI: 10.1109/MAPE.2017.8250810
Xuyang Chen, Zheng Li, Junhong Wang
A new design of spoof surface plasmon polaritons (SSPPs) leaky-wave antenna (LWA) with radiation null in the radiation pattern is proposed in this paper. The antenna is fed with coplanar waveguide, and consists of a main radiation section and an auxiliary radiation section. By controlling the initial phase, the phase constant and the radiation strength of auxiliary radiation section, a specific side lobe in the radiation pattern of the main radiation section can be suppressed due to the field cancellation between the far fields of the main and auxiliary sections. Thus a null region can occur in any desired direction. In this way a null region with depth −23.8 dB around θ = 220° at 13 GHz is achieved, which is about 9.5 dB lower than that of the original antenna.
{"title":"The realizing of radiation null for a SSPPs leaky-wave antenna","authors":"Xuyang Chen, Zheng Li, Junhong Wang","doi":"10.1109/MAPE.2017.8250810","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250810","url":null,"abstract":"A new design of spoof surface plasmon polaritons (SSPPs) leaky-wave antenna (LWA) with radiation null in the radiation pattern is proposed in this paper. The antenna is fed with coplanar waveguide, and consists of a main radiation section and an auxiliary radiation section. By controlling the initial phase, the phase constant and the radiation strength of auxiliary radiation section, a specific side lobe in the radiation pattern of the main radiation section can be suppressed due to the field cancellation between the far fields of the main and auxiliary sections. Thus a null region can occur in any desired direction. In this way a null region with depth −23.8 dB around θ = 220° at 13 GHz is achieved, which is about 9.5 dB lower than that of the original antenna.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126525493","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250917
Wu Nankai, Z. Wenbin, Meng Li-fei, Zhang Qiong-yu, Deng Jiaxin
Aiming at a better understanding for the physical explanation of amplifier nonlinear distortion and the convenience to get frequency and amplitude range of output signals under condition of multi-frequency input signals, amplifier modeling for nonlinear response based on transfer function is proposed by introducing method for solving the output response in frequency domain and transfer function which is deduced from the gain characteristic. According to the results of simulation example of amplifier, the calculation errors is similar to the traditional Taylor series method by the comparison which shows the approach could effectively reduce the model complexity and save time for calculating output response in frequency domain. The achievements provide amplifier modeling based on transfer function which contributes to the prediction of nonlinear interference in communication system can explain the mechanism for nonlinear phenomena such as the intermodulation distortion and gain compression.
{"title":"Nonlinear model of amplifier based on frequency transfer function","authors":"Wu Nankai, Z. Wenbin, Meng Li-fei, Zhang Qiong-yu, Deng Jiaxin","doi":"10.1109/MAPE.2017.8250917","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250917","url":null,"abstract":"Aiming at a better understanding for the physical explanation of amplifier nonlinear distortion and the convenience to get frequency and amplitude range of output signals under condition of multi-frequency input signals, amplifier modeling for nonlinear response based on transfer function is proposed by introducing method for solving the output response in frequency domain and transfer function which is deduced from the gain characteristic. According to the results of simulation example of amplifier, the calculation errors is similar to the traditional Taylor series method by the comparison which shows the approach could effectively reduce the model complexity and save time for calculating output response in frequency domain. The achievements provide amplifier modeling based on transfer function which contributes to the prediction of nonlinear interference in communication system can explain the mechanism for nonlinear phenomena such as the intermodulation distortion and gain compression.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"379 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123448497","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250830
Wu Shuang, Lv Yan, Li Jiu-sheng
A compact dual-band band-pass filter based on a dual-mode stepped impedance resonator is presented. Details operating principle of the band-pass filter are discussed. A prototype of dual-band band-pass filter has been designed, fabricated, and measured for validation. The results show that the first pass-band is at center frequency of 2.4GHz with −3dB fractional bandwidth 6.0%. And the second pass-band is at center frequency of 3.5GHz with −3dB fractional bandwidth 2.9%. The dimensions of the filter are 18×9mm2. Measured results are in a very good agreement with the simulated results.
{"title":"Compact dual-band bandpass filter using a stepped impedance resonator for WLAN/WiMAX application","authors":"Wu Shuang, Lv Yan, Li Jiu-sheng","doi":"10.1109/MAPE.2017.8250830","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250830","url":null,"abstract":"A compact dual-band band-pass filter based on a dual-mode stepped impedance resonator is presented. Details operating principle of the band-pass filter are discussed. A prototype of dual-band band-pass filter has been designed, fabricated, and measured for validation. The results show that the first pass-band is at center frequency of 2.4GHz with −3dB fractional bandwidth 6.0%. And the second pass-band is at center frequency of 3.5GHz with −3dB fractional bandwidth 2.9%. The dimensions of the filter are 18×9mm2. Measured results are in a very good agreement with the simulated results.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125667109","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250808
R. Bao, An-qi Wang, Zhixiang Huang
In this paper an efficient method is proposed to simulate the wide-band electromagnetic (EM) scattering from multiple dielectric targets above a dielectric PM rough sea surface, which is based on Chebyshev series and Maehly approximation. Comparing with the traditional frequency domain algorithms, such as method of moments (MoM), the proposed algorithm is efficiently in reducing the computational time. Simulated results show that the Maehly approximation and the repeatedly simulations obtained by the MoM have achieved an excellent agreement both in horizontal and vertical polarization.
{"title":"Wide-band EM scattering from multiple dielectric targets above a dielectric rough sea surface based on maehly approximation","authors":"R. Bao, An-qi Wang, Zhixiang Huang","doi":"10.1109/MAPE.2017.8250808","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250808","url":null,"abstract":"In this paper an efficient method is proposed to simulate the wide-band electromagnetic (EM) scattering from multiple dielectric targets above a dielectric PM rough sea surface, which is based on Chebyshev series and Maehly approximation. Comparing with the traditional frequency domain algorithms, such as method of moments (MoM), the proposed algorithm is efficiently in reducing the computational time. Simulated results show that the Maehly approximation and the repeatedly simulations obtained by the MoM have achieved an excellent agreement both in horizontal and vertical polarization.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116449414","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250897
Zhibiao Jiang, Jian Wang, Qian Song, Zhimin Zhou
Multibaseline phase unwrapping (PU) is a critical processing procedure of multibaseline synthetic aperture radar interferometry (InSAR). The presence of phase noise makes Chinese remainder theorem (CRT) method not robust enough and inapplicable in practical cases. In this letter, a method based on a robust Chinese remainder theorem (RCRT) is presented to improve the noise robustness of the multibaseline PU. Experimental results prove the effectiveness of RCRT method and demonstrate that the RCRT method is more robust to noise than the CRT method.
{"title":"Multibaseline phase unwrapping through robust Chinese remainder theorem","authors":"Zhibiao Jiang, Jian Wang, Qian Song, Zhimin Zhou","doi":"10.1109/MAPE.2017.8250897","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250897","url":null,"abstract":"Multibaseline phase unwrapping (PU) is a critical processing procedure of multibaseline synthetic aperture radar interferometry (InSAR). The presence of phase noise makes Chinese remainder theorem (CRT) method not robust enough and inapplicable in practical cases. In this letter, a method based on a robust Chinese remainder theorem (RCRT) is presented to improve the noise robustness of the multibaseline PU. Experimental results prove the effectiveness of RCRT method and demonstrate that the RCRT method is more robust to noise than the CRT method.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129568446","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250801
Jian Liu
In this paper, a chipless UWB-RFID tag is proposed that is possessed of digital signatures coded in frequency domian and time domain both. The tag is composed of an UWB antenna attached by a U-slot and a microstrip feed line, all of them are decorated by the resistive ON/OFF switches tailored for the application of digitization. Simulation show the proposed tag can be achieved by two discrete pulses in the backscattered wave, one is the structural mode, owning band gap in its spectrum that is probable to be coded by one digit bit “0” or “1” according to the status of the ON/OFF switch going across the U-slot; Another is the antenna mode, the phase of which is determined by the status of ON/OFF switch being probably coded by one digit bit “0” or “1” in time domian. As a result, the bit data of the tag can be enhanced by arraying a multiple of them with different length of U-slots and feed lines. As a paradigm, a tag with three such configurations is validated with joint frequency and time coded by 6 digit bit achieving data capacity by 64.
{"title":"Joint frequency and time coded chipless UWB-RFID tag for bit data enhancement","authors":"Jian Liu","doi":"10.1109/MAPE.2017.8250801","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250801","url":null,"abstract":"In this paper, a chipless UWB-RFID tag is proposed that is possessed of digital signatures coded in frequency domian and time domain both. The tag is composed of an UWB antenna attached by a U-slot and a microstrip feed line, all of them are decorated by the resistive ON/OFF switches tailored for the application of digitization. Simulation show the proposed tag can be achieved by two discrete pulses in the backscattered wave, one is the structural mode, owning band gap in its spectrum that is probable to be coded by one digit bit “0” or “1” according to the status of the ON/OFF switch going across the U-slot; Another is the antenna mode, the phase of which is determined by the status of ON/OFF switch being probably coded by one digit bit “0” or “1” in time domian. As a result, the bit data of the tag can be enhanced by arraying a multiple of them with different length of U-slots and feed lines. As a paradigm, a tag with three such configurations is validated with joint frequency and time coded by 6 digit bit achieving data capacity by 64.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129876858","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250854
Yangjié Liu, S. Horsley, T. Philbin, B. Vial, Y. Hao
We propose a general methodology to manipulate the amplitude of an electromagnetic wave in a pre-defined way, without introducing any scattering. This leads to a whole class of isotropic spatially varying permittivity and permeability profiles that are invisible to incident waves. The theory is illustrated through various numerical examples, including the non-magnetic case. The implementation of the required material properties using metamaterials is discussed, as well as extensions of the method for controlling the phase of electromagnetic fields.
{"title":"Controlling electromagnetic waves in a class of invisible materials","authors":"Yangjié Liu, S. Horsley, T. Philbin, B. Vial, Y. Hao","doi":"10.1109/MAPE.2017.8250854","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250854","url":null,"abstract":"We propose a general methodology to manipulate the amplitude of an electromagnetic wave in a pre-defined way, without introducing any scattering. This leads to a whole class of isotropic spatially varying permittivity and permeability profiles that are invisible to incident waves. The theory is illustrated through various numerical examples, including the non-magnetic case. The implementation of the required material properties using metamaterials is discussed, as well as extensions of the method for controlling the phase of electromagnetic fields.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134144129","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250784
Zhao Ze-jiang, Li Jiu-sheng
A small size monopole antenna with a matching network for WWAN/LTE bands in the tablet computer is presented. With the aid of the matching network, the bandwidths of the antenna's lower and higher bands have been widened. The numerical and experimental results demonstrated that the proposed antenna satisfies the requirement of 6dB return loss for the impedance bandwidth of the WWAN/LTE bands (670MHz∼980MHz/1650MHz∼2660MHz). The antenna efficiencies are about 48%∼69% and 53%∼77% over the lower and higher bands with the peak gains of 1.28dBi and 3.48dBi, respectively. The total size of the presented antenna is of 30×10mm2. Details of the proposed antenna are described and the experimental results are discussed.
{"title":"Small size antenna with a matching network for tablet computer application","authors":"Zhao Ze-jiang, Li Jiu-sheng","doi":"10.1109/MAPE.2017.8250784","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250784","url":null,"abstract":"A small size monopole antenna with a matching network for WWAN/LTE bands in the tablet computer is presented. With the aid of the matching network, the bandwidths of the antenna's lower and higher bands have been widened. The numerical and experimental results demonstrated that the proposed antenna satisfies the requirement of 6dB return loss for the impedance bandwidth of the WWAN/LTE bands (670MHz∼980MHz/1650MHz∼2660MHz). The antenna efficiencies are about 48%∼69% and 53%∼77% over the lower and higher bands with the peak gains of 1.28dBi and 3.48dBi, respectively. The total size of the presented antenna is of 30×10mm2. Details of the proposed antenna are described and the experimental results are discussed.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133376618","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250885
H. Fang, Wang Xiang-jun
The accuracy of underwater electric field detection determines the accuracy of underwater target identification and positioning. The original electric field will be affected when the measurement device is put in underwater electric field. The formula of underwater electric field where the three-component sensor is put in was established and the influence coefficient of the electric field was proposed by numerical simulation. The specific functional relationship of electrode length, electrode radius, Z measuring distance and influence coefficient was established. Both numerical simulation and experimental results demonstrated that underwater electric field is not affected when the three-component sensor is in the far field; the electric field effect can be neglected when the measuring distance is greater than 4 times the electrode length or the measuring distance along the axial radius is greater than 2 times the electrode radius. Research conclusions are of important significance to accuracy of actual electric field measurement.
{"title":"Influence coefficient of three-component sensor on underwater electric field and numerical simulation","authors":"H. Fang, Wang Xiang-jun","doi":"10.1109/MAPE.2017.8250885","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250885","url":null,"abstract":"The accuracy of underwater electric field detection determines the accuracy of underwater target identification and positioning. The original electric field will be affected when the measurement device is put in underwater electric field. The formula of underwater electric field where the three-component sensor is put in was established and the influence coefficient of the electric field was proposed by numerical simulation. The specific functional relationship of electrode length, electrode radius, Z measuring distance and influence coefficient was established. Both numerical simulation and experimental results demonstrated that underwater electric field is not affected when the three-component sensor is in the far field; the electric field effect can be neglected when the measuring distance is greater than 4 times the electrode length or the measuring distance along the axial radius is greater than 2 times the electrode radius. Research conclusions are of important significance to accuracy of actual electric field measurement.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130106969","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 : 2017-10-01DOI: 10.1109/MAPE.2017.8250845
Yanyan Zhu, M. Kong, Mingsheng Chen
For fast and accurate analysis of electromagnetic scattering problem of bodies of revolution, the high-order moment of method (MOM) is constructed based on Chebyshev polynomials so that the dimension of the impedance matrix can be reduced. To further improve the computational efficiency, the asymmetric wavelet transform technique is introduced to make the low dimension impedance matrix sparse, and the number of nonzero elements is reduced drastically by setting suitable threshold. The effectiveness of the new proposed method is validated by numerical simulation of differently shaped objects.
{"title":"High-order method of moments for solving bodies of revolution using asymmetric wavelet transform","authors":"Yanyan Zhu, M. Kong, Mingsheng Chen","doi":"10.1109/MAPE.2017.8250845","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250845","url":null,"abstract":"For fast and accurate analysis of electromagnetic scattering problem of bodies of revolution, the high-order moment of method (MOM) is constructed based on Chebyshev polynomials so that the dimension of the impedance matrix can be reduced. To further improve the computational efficiency, the asymmetric wavelet transform technique is introduced to make the low dimension impedance matrix sparse, and the number of nonzero elements is reduced drastically by setting suitable threshold. The effectiveness of the new proposed method is validated by numerical simulation of differently shaped objects.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114370129","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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