Pub Date : 2017-10-01DOI: 10.1109/MAPE.2017.8250867
Shuge Wang, W. Kang, Wen Wu
A microstrip switchable filtering balun with three operating state is presented in this paper. Three operating modes are dual-band filtering balun operating at 1.43 GHz and 1.76 GHz, low-band filtering balun centering at 1.43 GHz for WMTS application, and high-band filtering balun working at 1.76 GHz for wireless communication. Three operating modes can be independently switched by controlling the voltages of PIN diodes loading at the open-ended of dual-mode resonator. The dual-band bandpass filtering responses are achieved by embedding two pairs of dual-mode resonators. The simulated result shows good performance.
{"title":"Microstrip switchable filtering balun with three operating modes","authors":"Shuge Wang, W. Kang, Wen Wu","doi":"10.1109/MAPE.2017.8250867","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250867","url":null,"abstract":"A microstrip switchable filtering balun with three operating state is presented in this paper. Three operating modes are dual-band filtering balun operating at 1.43 GHz and 1.76 GHz, low-band filtering balun centering at 1.43 GHz for WMTS application, and high-band filtering balun working at 1.76 GHz for wireless communication. Three operating modes can be independently switched by controlling the voltages of PIN diodes loading at the open-ended of dual-mode resonator. The dual-band bandpass filtering responses are achieved by embedding two pairs of dual-mode resonators. The simulated result shows good performance.","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":"116686552","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.2017.8250812
Ludan Song, Hang Wu, Yuhuan Wang, S. Dong, Xue Pan, Weihua Zong, Zhejun Jin
A novel leaf shaped monopole antenna with ground slit is proposed. The leaf shaped antenna consists of three ellipses with CPW feeding to operate 3 to 9.5 GHz band; the ground slit have one fourth arc shape to improve 10 GHz band impedance matching. The antenna is small in size with dimension of 25 by 21 mm. The simulated results show that the gain is over 1 dBi and has an omnidirectional radiation patterns in the whole band.
{"title":"Compact leaf shaped UWB monopole antenna","authors":"Ludan Song, Hang Wu, Yuhuan Wang, S. Dong, Xue Pan, Weihua Zong, Zhejun Jin","doi":"10.1109/MAPE.2017.8250812","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250812","url":null,"abstract":"A novel leaf shaped monopole antenna with ground slit is proposed. The leaf shaped antenna consists of three ellipses with CPW feeding to operate 3 to 9.5 GHz band; the ground slit have one fourth arc shape to improve 10 GHz band impedance matching. The antenna is small in size with dimension of 25 by 21 mm. The simulated results show that the gain is over 1 dBi and has an omnidirectional radiation patterns in the whole band.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"56 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":"114743409","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.2017.8250825
Dayong Hu
16 QAM modulation and demodulation mode has the advantage of high noise tolerance and superior anti-noise performance, and it is suitable to work in the environment with large signal-to-noise ratio and band-limited value. MATLAB has the advantage in data analysis and processing, and it integrates matrix calculation, numerical analysis, scientific data visualization, modeling and simulation of nonlinear dynamic systems and some other powerful functions in an easy-to-use windows environment so that it can provide a comprehensive solution for scientific research, engineering design, and some other fields. Accordingly, a simulation method of 16QAM modulation and demodulation based on MATLAB is proposed, which can simulate the 16QAM modulation and demodulation of the randomly-chosen signal as well as get the simulation image by compiling and running the matlab program. This method can reflect the change of parameters as well as the dynamic working process of modulation and demodulation, and it can also perform the data process, waveform, and performance analysis of the image obtained in the end, which has the advantage of intuition and clarity.
{"title":"A simulation method of 16QAM modulation and demodulation based on Matlab platform","authors":"Dayong Hu","doi":"10.1109/MAPE.2017.8250825","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250825","url":null,"abstract":"16 QAM modulation and demodulation mode has the advantage of high noise tolerance and superior anti-noise performance, and it is suitable to work in the environment with large signal-to-noise ratio and band-limited value. MATLAB has the advantage in data analysis and processing, and it integrates matrix calculation, numerical analysis, scientific data visualization, modeling and simulation of nonlinear dynamic systems and some other powerful functions in an easy-to-use windows environment so that it can provide a comprehensive solution for scientific research, engineering design, and some other fields. Accordingly, a simulation method of 16QAM modulation and demodulation based on MATLAB is proposed, which can simulate the 16QAM modulation and demodulation of the randomly-chosen signal as well as get the simulation image by compiling and running the matlab program. This method can reflect the change of parameters as well as the dynamic working process of modulation and demodulation, and it can also perform the data process, waveform, and performance analysis of the image obtained in the end, which has the advantage of intuition and clarity.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"123 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":"134179494","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.2017.8250822
Ye Tian, Dong-hee Han, Lishi Liu, Yu Fu
Focus on the obvious self-similarity of much network traffic at present, the paper carries out studies about the generation method of self-similar traffic, and a time-based self-similar traffic generation model is established. By superimposing the Pareto distribution, the model generates the active and idle periods of each source, and the number of the packets generated at any time is obtained though counting the number of the active data source at the moment. The theoretical analysis and results of simulation show that the model has better self-similarity. The model is less complex to compute and easy to apply, and it avoids the obstacles of the traditional ON/OFF model in which the number of packets cannot change with time when self-similar traffic is generated.
{"title":"A self-similar traffic generation model based on time","authors":"Ye Tian, Dong-hee Han, Lishi Liu, Yu Fu","doi":"10.1109/MAPE.2017.8250822","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250822","url":null,"abstract":"Focus on the obvious self-similarity of much network traffic at present, the paper carries out studies about the generation method of self-similar traffic, and a time-based self-similar traffic generation model is established. By superimposing the Pareto distribution, the model generates the active and idle periods of each source, and the number of the packets generated at any time is obtained though counting the number of the active data source at the moment. The theoretical analysis and results of simulation show that the model has better self-similarity. The model is less complex to compute and easy to apply, and it avoids the obstacles of the traditional ON/OFF model in which the number of packets cannot change with time when self-similar traffic is generated.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"83 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":"133107477","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.2017.8250839
Chuangchuang Zhang, Y. Wen, Jianjun Xiao
The filter is a key part of the dual-channel measurement receiver radio frequency (RF) front end. The amplitude and phase characteristics of the RF filter, in particular the phase characteristics, seriously affect the demodulation of the received signal. In this paper, the factors that influence the linear phase of the filter are analyzed, and a generalized Chebyshev linear phase filter design method based on transmission zero is proposed. Finally, a multi-transmission zero bandpass filter is designed by simulation. The simulation results shows the effectiveness of the design method. The designed filters have the properties of low insertion loss, high stopband suppression, very small group delay fluctuation, low cost.
{"title":"Research on filter for dual-channel blind signal measurement receiver","authors":"Chuangchuang Zhang, Y. Wen, Jianjun Xiao","doi":"10.1109/MAPE.2017.8250839","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250839","url":null,"abstract":"The filter is a key part of the dual-channel measurement receiver radio frequency (RF) front end. The amplitude and phase characteristics of the RF filter, in particular the phase characteristics, seriously affect the demodulation of the received signal. In this paper, the factors that influence the linear phase of the filter are analyzed, and a generalized Chebyshev linear phase filter design method based on transmission zero is proposed. Finally, a multi-transmission zero bandpass filter is designed by simulation. The simulation results shows the effectiveness of the design method. The designed filters have the properties of low insertion loss, high stopband suppression, very small group delay fluctuation, low cost.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"51 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":"132379610","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.2017.8250895
Xinya Qiao, Dawei Liu, Yafang Ding
In general, bistatic SAR owns the superiority of collecting additional information about the target compared to monostatic SAR because of its separated transmitter and receiver on different platforms. In this paper, a modified 3-D coherent model was used to simulate the scattering field of forest canopies in bistatic model, the zenith angle of the transmitting platform was fixed, and several different zenith angles were explored on the receiving platform, the scattering field of a single tree was obtained. Bistatic BP algorithm was used to reconstruct the 2-D bistatic SAR image for the simulated data. Imaging results of different bistatic angles were obtained, and the imaging results were analyzed. Range resolution in bistatic model can be improved compared to monostatic SAR.
{"title":"The application of 3-D coherent scattering model on bistatic SAR imaging of virtual vegetation","authors":"Xinya Qiao, Dawei Liu, Yafang Ding","doi":"10.1109/MAPE.2017.8250895","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250895","url":null,"abstract":"In general, bistatic SAR owns the superiority of collecting additional information about the target compared to monostatic SAR because of its separated transmitter and receiver on different platforms. In this paper, a modified 3-D coherent model was used to simulate the scattering field of forest canopies in bistatic model, the zenith angle of the transmitting platform was fixed, and several different zenith angles were explored on the receiving platform, the scattering field of a single tree was obtained. Bistatic BP algorithm was used to reconstruct the 2-D bistatic SAR image for the simulated data. Imaging results of different bistatic angles were obtained, and the imaging results were analyzed. Range resolution in bistatic model can be improved compared to monostatic SAR.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"11 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":"122203178","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.2017.8250877
Biyun Chen, Yerong Zhang, Xin Pan
An alternating-direction implicit finite-difference (ADI-FDTD) based time-domain inverse algorithm is proposed in this paper. The imaging algorithm based on forward-backward time-stepping (FBTS) method. By comparing the processing results, it was found that the proposed ADI-FDTD method can substitute for the conventional finite-difference time-domain (FDTD) method, strongly validating the former's usefulness and accuracy. Moreover, processing time can be reduced significantly for microwave tomography.
{"title":"ADI-FDTD-based microwave tomography for one-dimensional breast model","authors":"Biyun Chen, Yerong Zhang, Xin Pan","doi":"10.1109/MAPE.2017.8250877","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250877","url":null,"abstract":"An alternating-direction implicit finite-difference (ADI-FDTD) based time-domain inverse algorithm is proposed in this paper. The imaging algorithm based on forward-backward time-stepping (FBTS) method. By comparing the processing results, it was found that the proposed ADI-FDTD method can substitute for the conventional finite-difference time-domain (FDTD) method, strongly validating the former's usefulness and accuracy. Moreover, processing time can be reduced significantly for microwave tomography.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"17 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":"125218457","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.2017.8250912
Xu Wanfeng, Han Yubing, Sheng Weixing, Ma Xiaofeng, Z. Renli, Cui Jie
The output performance of a radio telescope is always suppressed severely by strong interferences. To solve this problem, a new Bayesian subspace estimation algorithm is proposed for beamforming and RFI cancellation. Assuming the steering vectors of interferences follow complex Gaussian distribution, the proposed algorithm recursively estimates these steering vectors based on Bayesian principle and subspace deflation technique, and then the span of interference subspace is realized. Numerical simulations show that, compared with eigenvalue decomposition (EVD) and fast approximated power iteration (FAPI), the proposed algorithm can accomplish a lower subspace estimation error and a better performance in beamforming and interference cancellation, especially when weak signals are considered.
{"title":"Bayesian subspace estimation for beamforming and RFI cancellation using deflation technique","authors":"Xu Wanfeng, Han Yubing, Sheng Weixing, Ma Xiaofeng, Z. Renli, Cui Jie","doi":"10.1109/MAPE.2017.8250912","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250912","url":null,"abstract":"The output performance of a radio telescope is always suppressed severely by strong interferences. To solve this problem, a new Bayesian subspace estimation algorithm is proposed for beamforming and RFI cancellation. Assuming the steering vectors of interferences follow complex Gaussian distribution, the proposed algorithm recursively estimates these steering vectors based on Bayesian principle and subspace deflation technique, and then the span of interference subspace is realized. Numerical simulations show that, compared with eigenvalue decomposition (EVD) and fast approximated power iteration (FAPI), the proposed algorithm can accomplish a lower subspace estimation error and a better performance in beamforming and interference cancellation, especially when weak signals are considered.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"58 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":"122997290","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.2017.8250835
Dongdong Wang, Xi Chen, Lan Gao
In this paper, we introduced the comparative experimental research results of lightning electromagnetic pulses (LEMP) protection effects of radio frequency (RF) surge arresters with low-pass and band-pass frequency characteristics. It can be conclude that the low-pass arrester based on semiconductor surge protection gap (SSPG) featured shorter response time in comparison with that based on gas discharge tubes (GDT), and the LEMP protection performance of band-pass arrestor was much better than that of the low-pass ones. The residual pulse amplitude of the band-pass arrester was about 1/10∼1/5 of the low-pass arresters, and the specific value was determined by the lower-side-band suppression capabilities of the equivalent band-pass filter.
{"title":"Comparative experimental research on the LEMP protection effects of RF surge arresters with low-pass and band-pass frequency characteristics","authors":"Dongdong Wang, Xi Chen, Lan Gao","doi":"10.1109/MAPE.2017.8250835","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250835","url":null,"abstract":"In this paper, we introduced the comparative experimental research results of lightning electromagnetic pulses (LEMP) protection effects of radio frequency (RF) surge arresters with low-pass and band-pass frequency characteristics. It can be conclude that the low-pass arrester based on semiconductor surge protection gap (SSPG) featured shorter response time in comparison with that based on gas discharge tubes (GDT), and the LEMP protection performance of band-pass arrestor was much better than that of the low-pass ones. The residual pulse amplitude of the band-pass arrester was about 1/10∼1/5 of the low-pass arresters, and the specific value was determined by the lower-side-band suppression capabilities of the equivalent band-pass filter.","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":"117102818","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.2017.8250836
Liang Zheng, Han Yu-bing
Due to the lack of reasonable and theoretical methods to guide the layout of antennas on the electrically large carrier, engineers often use their experience and actual measurements to place antennas. In order to solve the above problem, this paper makes use of the Python API interface provided by ANSYS Savant, and combined with the DEMO algorithm, to program a Python script to automatically complete simulation of antenna layout optimization. This method takes advantage of Savant which support fast electromagnetic compatible simulation of antennas on the electrically large carrier, and uses optimization algorithm to replace blind tests, in order to save time, improve design efficiency, and reduce development costs.
{"title":"Simulation and optimization of multi-antennas layout on the electrically large carrier","authors":"Liang Zheng, Han Yu-bing","doi":"10.1109/MAPE.2017.8250836","DOIUrl":"https://doi.org/10.1109/MAPE.2017.8250836","url":null,"abstract":"Due to the lack of reasonable and theoretical methods to guide the layout of antennas on the electrically large carrier, engineers often use their experience and actual measurements to place antennas. In order to solve the above problem, this paper makes use of the Python API interface provided by ANSYS Savant, and combined with the DEMO algorithm, to program a Python script to automatically complete simulation of antenna layout optimization. This method takes advantage of Savant which support fast electromagnetic compatible simulation of antennas on the electrically large carrier, and uses optimization algorithm to replace blind tests, in order to save time, improve design efficiency, and reduce development costs.","PeriodicalId":320947,"journal":{"name":"2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)","volume":"3 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":"117325787","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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