Pub Date : 2015-10-01DOI: 10.1109/ICCPS.2015.7454203
Mengkui Shen, Yang Huang, Z. Shao
In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented. For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted-microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep the compact configuration. By taking advantage of the property of LC, central frequency tunability is induced by applying low ac voltages. In the LC default state, the proposed filter has three-pole, it operates at 4.7GHz with about 41% fractional bandwidth (1.94GHz).
{"title":"A tunable microstrip dual-mode bandpass filter based on liquid crystal technology","authors":"Mengkui Shen, Yang Huang, Z. Shao","doi":"10.1109/ICCPS.2015.7454203","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454203","url":null,"abstract":"In this paper, a novel tunable microwave bandpass filter (BPF) based on liquid crystal (LC) technology is presented. For ease of supplying ac voltages, the proposed filter is achieved by particular configuration schemes with low cost inverted-microstrip structure. Two open-circuited stubs are placed inside a meander loop resonator so as to form quarter wavelength resonators, which is good to keep the compact configuration. By taking advantage of the property of LC, central frequency tunability is induced by applying low ac voltages. In the LC default state, the proposed filter has three-pole, it operates at 4.7GHz with about 41% fractional bandwidth (1.94GHz).","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127187110","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454202
Junwei Yan, Xiang Li, Z. Shao
In this paper, a intelligent and fast two-dimensional constant false alarm rate (CFAR) processor to perform adaptive threshold target detection is presented. It employs a composite approach based on the well-known cell averaging CFAR (CA-CFAR) and ordered statistic CFAR (OS-CFAR) processors. In this case, any masking effects in multi-target situations can be avoided without increasing the computation complexity. Besides, utilization of binary integration results in a higher detection performance. The simulation results verify the validity of the algorithm.
{"title":"Intelligent and fast two-dimensional CFAR procedure","authors":"Junwei Yan, Xiang Li, Z. Shao","doi":"10.1109/ICCPS.2015.7454202","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454202","url":null,"abstract":"In this paper, a intelligent and fast two-dimensional constant false alarm rate (CFAR) processor to perform adaptive threshold target detection is presented. It employs a composite approach based on the well-known cell averaging CFAR (CA-CFAR) and ordered statistic CFAR (OS-CFAR) processors. In this case, any masking effects in multi-target situations can be avoided without increasing the computation complexity. Besides, utilization of binary integration results in a higher detection performance. The simulation results verify the validity of the algorithm.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117016145","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454112
Xiaocong Liu, Yueli Li
Intensive narrowband radio frequency interference is a problem that very high frequency (VHF)/ultra-high frequency (UHF) radar must solve in the work. This paper proposes a sine wave parameter estimation method of local refinement search in frequency domain. It can estimate the frequency of narrowband radio frequency interference(RFI) by using fast Fourier transform(FFT) and chirp transform algorithm (CTA). Simulation shows that this method can estimate the phase of narrowband radio frequency interference accurately under the condition of low signal-to-noise ratio (SNR), and the estimating efficiency is much higher than classical algorithms.
{"title":"Parameter estimation of narrowband radio frequency interference based on local refinement search in frequency domain","authors":"Xiaocong Liu, Yueli Li","doi":"10.1109/ICCPS.2015.7454112","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454112","url":null,"abstract":"Intensive narrowband radio frequency interference is a problem that very high frequency (VHF)/ultra-high frequency (UHF) radar must solve in the work. This paper proposes a sine wave parameter estimation method of local refinement search in frequency domain. It can estimate the frequency of narrowband radio frequency interference(RFI) by using fast Fourier transform(FFT) and chirp transform algorithm (CTA). Simulation shows that this method can estimate the phase of narrowband radio frequency interference accurately under the condition of low signal-to-noise ratio (SNR), and the estimating efficiency is much higher than classical algorithms.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122968166","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454214
Tenglong Ma, Shiwen Yang, Z. Nie
This article presents a theoretical study on the scattering characteristics of ultra-wideband tightly coupled phased array antenna element in the array environment. The radiation characteristics of the array element is designed at 6-18GHz, with scanning angle range from -45° to 45° in E-plane. Then the antenna mode scattering is calculated numerically. Antenna mode scattering and structural mode scattering and the impact of them on the total scattering field are analyzed. The study has a significant direction to the RCS reduction of ultra-wideband tightly coupled phased array antenna.
{"title":"A study on the scattering characteristics of ultra-wideband tightly coupled phased array antennas","authors":"Tenglong Ma, Shiwen Yang, Z. Nie","doi":"10.1109/ICCPS.2015.7454214","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454214","url":null,"abstract":"This article presents a theoretical study on the scattering characteristics of ultra-wideband tightly coupled phased array antenna element in the array environment. The radiation characteristics of the array element is designed at 6-18GHz, with scanning angle range from -45° to 45° in E-plane. Then the antenna mode scattering is calculated numerically. Antenna mode scattering and structural mode scattering and the impact of them on the total scattering field are analyzed. The study has a significant direction to the RCS reduction of ultra-wideband tightly coupled phased array antenna.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123908481","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454084
Chunli Jiang, Zhenglin Li, Yang Zhou, Xiaohu Qin, Zeshuang Zhao
This paper presented a complete design of a new boiler control system based on STC15F2K61S2 MCU and SIM900A GSM module. In this design, a certain number of sensors and corresponding peripheral circuits were applied to collect the states of temperature and water level of the boiler automatically. The system obtained an excellent dynamic response for constant temperature controlling by means of fuzzy PID control algorithm. Remote monitoring function was well realized by transfer the alarm data and control signals to the remote terminals wirelessly by using GSM module. The test results show that this system was very stable, and has a good application prospect.
{"title":"Design of constant temperature boiler system with fuzzy control and remote monitoring function","authors":"Chunli Jiang, Zhenglin Li, Yang Zhou, Xiaohu Qin, Zeshuang Zhao","doi":"10.1109/ICCPS.2015.7454084","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454084","url":null,"abstract":"This paper presented a complete design of a new boiler control system based on STC15F2K61S2 MCU and SIM900A GSM module. In this design, a certain number of sensors and corresponding peripheral circuits were applied to collect the states of temperature and water level of the boiler automatically. The system obtained an excellent dynamic response for constant temperature controlling by means of fuzzy PID control algorithm. Remote monitoring function was well realized by transfer the alarm data and control signals to the remote terminals wirelessly by using GSM module. The test results show that this system was very stable, and has a good application prospect.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121185224","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454237
Mingen Tian, Tianliang Zhang, K. Yang, Feng Yan, Qingzhi Yang, Zhiming Ma
This paper presents a simple method to design miniature wideband band-pass filters. In order to verify this method, we designed a miniature microstrip wideband band-pass filter by using open-loop resonators. Eventually we achieved a 10th-order miniature wideband band-pass filter with center frequency 2 GHz, bandwidth 1 GHz and the relative bandwidth 50%, passband insertion loss less than 7.3 dB, stop-band rejection better than 42.6 dB when frequency lower than 1.4 GHz and more than 36.6 dB when frequency higher than 2.6 GHz. Its total size is 20.01 mm×16.22 mm.
{"title":"Miniature microstrip wideband band-pass filter","authors":"Mingen Tian, Tianliang Zhang, K. Yang, Feng Yan, Qingzhi Yang, Zhiming Ma","doi":"10.1109/ICCPS.2015.7454237","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454237","url":null,"abstract":"This paper presents a simple method to design miniature wideband band-pass filters. In order to verify this method, we designed a miniature microstrip wideband band-pass filter by using open-loop resonators. Eventually we achieved a 10th-order miniature wideband band-pass filter with center frequency 2 GHz, bandwidth 1 GHz and the relative bandwidth 50%, passband insertion loss less than 7.3 dB, stop-band rejection better than 42.6 dB when frequency lower than 1.4 GHz and more than 36.6 dB when frequency higher than 2.6 GHz. Its total size is 20.01 mm×16.22 mm.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"97 4 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128465397","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454118
Youwei Yang, Yu Sheng, Tianzhong Zhang
Confocal gyrotron traveling wave tube (gyro-TWT) is a novel gyrotron amplifier capable of operating in higher order modes while generating high power at the same time. In this paper, the linear theory is developed to analysis a 170-GHz confocal gyro-TWT based on previous work. The results fit well and seem to be promising.
{"title":"Linear analysis of a 170 GHz confocal gyrotron traveling wave tube","authors":"Youwei Yang, Yu Sheng, Tianzhong Zhang","doi":"10.1109/ICCPS.2015.7454118","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454118","url":null,"abstract":"Confocal gyrotron traveling wave tube (gyro-TWT) is a novel gyrotron amplifier capable of operating in higher order modes while generating high power at the same time. In this paper, the linear theory is developed to analysis a 170-GHz confocal gyro-TWT based on previous work. The results fit well and seem to be promising.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128519958","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454152
Z. Zhanga, F. Tiana, Fanxin Zenga, Guixin Xuan
As one of main indexes of orthogonal frequency division multiplexing (OFDM) system, peak-to-average power ratio (PAPR) of the time-domain signal has an important effect on system performance. A larger PAPR has to require a wider linear range of power amplifier (PA) in system transmitter, which will greatly decrease the efficiency of PA. In this paper, we introduce a broadband OFDM communication system which is designed and implemented on the basis of digital intermediate frequency (IF) architecture and 1×4 multiple-input multiple-output (MIMO) technology. The parameters and structure of the 1×4 MIMO-OFDM communication system are provided, and its frequency spectrum and time signal are respectively tested. In addition, the PAPR problem is mainly analyzed, and the corresponding experimental results and simulation analyses are also presented.
{"title":"PAPR analyses for broadband OFDM transmitter with digital IF architecture","authors":"Z. Zhanga, F. Tiana, Fanxin Zenga, Guixin Xuan","doi":"10.1109/ICCPS.2015.7454152","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454152","url":null,"abstract":"As one of main indexes of orthogonal frequency division multiplexing (OFDM) system, peak-to-average power ratio (PAPR) of the time-domain signal has an important effect on system performance. A larger PAPR has to require a wider linear range of power amplifier (PA) in system transmitter, which will greatly decrease the efficiency of PA. In this paper, we introduce a broadband OFDM communication system which is designed and implemented on the basis of digital intermediate frequency (IF) architecture and 1×4 multiple-input multiple-output (MIMO) technology. The parameters and structure of the 1×4 MIMO-OFDM communication system are provided, and its frequency spectrum and time signal are respectively tested. In addition, the PAPR problem is mainly analyzed, and the corresponding experimental results and simulation analyses are also presented.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115940002","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454206
Tao Huang, Xin-Min Yang, Yongmao Huang, Zhaosheng He, Z. Shao
In this paper, a substrate integrated waveguide (SIW)-to-defected ground structure (DGS) bandpass filter with moderate fractional bandwidth and improved stopband performance is proposed and demonstrated for X-band radar application. Design considerations including the design approach are addressed. A third-order filter with a passband of 8.8-10.1 GHz is fabricated on a single-layer Rogers RT/Duroid 5880 substrate using linear arrays of metallized via-holes by a standard printed circuit board process. Measured results of the filter agree very well with the simulated results, showing the in-band insertion loss is 1.3 dB or less, and in-band return loss is better than 20dB, respectively. The stopband rejection in the frequency band of 12-22 GHz is better than 35 dB.
{"title":"An X-band SIW-DGS bandpass filter with improved stopband performance","authors":"Tao Huang, Xin-Min Yang, Yongmao Huang, Zhaosheng He, Z. Shao","doi":"10.1109/ICCPS.2015.7454206","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454206","url":null,"abstract":"In this paper, a substrate integrated waveguide (SIW)-to-defected ground structure (DGS) bandpass filter with moderate fractional bandwidth and improved stopband performance is proposed and demonstrated for X-band radar application. Design considerations including the design approach are addressed. A third-order filter with a passband of 8.8-10.1 GHz is fabricated on a single-layer Rogers RT/Duroid 5880 substrate using linear arrays of metallized via-holes by a standard printed circuit board process. Measured results of the filter agree very well with the simulated results, showing the in-band insertion loss is 1.3 dB or less, and in-band return loss is better than 20dB, respectively. The stopband rejection in the frequency band of 12-22 GHz is better than 35 dB.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116109302","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 : 2015-10-01DOI: 10.1109/ICCPS.2015.7454188
Sun Chao
In this paper, a detailed research on the shorting probe loaded patch antenna with the help of transmission line model loaded by an equivalent circuit model of shorting probe is done and a compact circularly polarized microstrip antenna (CPMA) with an extraordinarily small electrical size of 0.16λ(length) × 0.16λ(width) × 0.08λ(height) at 1.268GHz (λ is the wavelength in free space) is designed. Instructed by the research on the shorting probe, the bandwidth enhancement of the proposed antenna is achieved. In order to obtain the best circularly polarized(CP) radiation performance, several types of perturbations on the shorting probe are studied and a novel perturbation structure, unequal length cross-shape shorting strips, is proposed. The simulated and measured results show that the 3dB axial ratio(AR) bandwidth of 1.6%(20MHz) is realized, which means that the proposed antenna can be used for the applications of BD3 band(1.268GHz ± 10MHz) of Beidou (COMPASS) Navigation System.
{"title":"Analysis and design of a compact circularly polarized microstrip antenna with cross-shape shorting strips","authors":"Sun Chao","doi":"10.1109/ICCPS.2015.7454188","DOIUrl":"https://doi.org/10.1109/ICCPS.2015.7454188","url":null,"abstract":"In this paper, a detailed research on the shorting probe loaded patch antenna with the help of transmission line model loaded by an equivalent circuit model of shorting probe is done and a compact circularly polarized microstrip antenna (CPMA) with an extraordinarily small electrical size of 0.16λ(length) × 0.16λ(width) × 0.08λ(height) at 1.268GHz (λ is the wavelength in free space) is designed. Instructed by the research on the shorting probe, the bandwidth enhancement of the proposed antenna is achieved. In order to obtain the best circularly polarized(CP) radiation performance, several types of perturbations on the shorting probe are studied and a novel perturbation structure, unequal length cross-shape shorting strips, is proposed. The simulated and measured results show that the 3dB axial ratio(AR) bandwidth of 1.6%(20MHz) is realized, which means that the proposed antenna can be used for the applications of BD3 band(1.268GHz ± 10MHz) of Beidou (COMPASS) Navigation System.","PeriodicalId":319991,"journal":{"name":"2015 IEEE International Conference on Communication Problem-Solving (ICCP)","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116128099","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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