The number of resonant cavities of the dual-mode filter is reduced by half compared with that of the single-mode filter, and the structure is more compact, which can effectively reduce the quality and volume of the filter, and is more and more widely used in communication systems. On the basis of analyzing the dual-mode dielectric waveguide filter, a method based on surrogate model-assisted optimization algorithm is proposed, which can quickly design and optimize the filter, and obtain the optimal size of the dual-mode dielectric waveguide filter.
{"title":"Fast Optimization of Dual-Mode Dielectric Waveguide Filters Based on Surrogate Model-Assisted Optimization Algorithm","authors":"Xiaoli Wang, Guangfei Qi, Jiabiao Xue, Yongliang Zhang","doi":"10.1109/APCAP56600.2022.10069964","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069964","url":null,"abstract":"The number of resonant cavities of the dual-mode filter is reduced by half compared with that of the single-mode filter, and the structure is more compact, which can effectively reduce the quality and volume of the filter, and is more and more widely used in communication systems. On the basis of analyzing the dual-mode dielectric waveguide filter, a method based on surrogate model-assisted optimization algorithm is proposed, which can quickly design and optimize the filter, and obtain the optimal size of the dual-mode dielectric waveguide filter.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114985361","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}
In this paper, we propose a tunable bandpass frequency selective surface (FSS) loaded with lumped elements. The bandpass range can be adjusted by changing the value of the inductors. And an equivalent circuit model is proposed to analyze the relationship between the transmission frequency and the chip inductors. This FSS structure is simple to fabricate and has a wide frequency adjustment range of 0.5GHz to 4GHz.
{"title":"A Tunable Bandpass Frequency Selective Surface","authors":"Juliang Lv, Zilin Qiao, Qian Chen, Jian Chen, Songlin Yan, Zhixiang Huang","doi":"10.1109/APCAP56600.2022.10069428","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069428","url":null,"abstract":"In this paper, we propose a tunable bandpass frequency selective surface (FSS) loaded with lumped elements. The bandpass range can be adjusted by changing the value of the inductors. And an equivalent circuit model is proposed to analyze the relationship between the transmission frequency and the chip inductors. This FSS structure is simple to fabricate and has a wide frequency adjustment range of 0.5GHz to 4GHz.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"37 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115404697","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10069548
Haiwen Ke, M. He, Pengyuan Wang, Jingxin Xia
An approximate equivalent principle that combines the modified surface integration (MSI) and the integral equation (IE) is proposed to evaluate the electromagnetic performance of the antannas/arrays enclosed by radomes (AER) with large sizes in transmitting mode. The multilevel fast multipole algorithm (MLFMA) is utilized to speeding up the surface integration. Numerical results demonstrate the validity, precision and efficiency of present approach.
{"title":"Fast and Efficient Evaluation of Radome-Enclosed Antennas in Transmitting Mode by Modified Surface Integration","authors":"Haiwen Ke, M. He, Pengyuan Wang, Jingxin Xia","doi":"10.1109/APCAP56600.2022.10069548","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069548","url":null,"abstract":"An approximate equivalent principle that combines the modified surface integration (MSI) and the integral equation (IE) is proposed to evaluate the electromagnetic performance of the antannas/arrays enclosed by radomes (AER) with large sizes in transmitting mode. The multilevel fast multipole algorithm (MLFMA) is utilized to speeding up the surface integration. Numerical results demonstrate the validity, precision and efficiency of present approach.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115598960","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10068866
H. Liu, Yong Wang, Mu Zhou, Liangbo Xie, Quan Long, Lixian Fu
In this paper, a ranging algorithm is proposed using the short-range Frequency Modulation Continuous Wave (FMCW) radar. Specifically, the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) is presented to decompose the intermediate frequency (IF) signal. Then, the Singular Value Decomposition (SVD) is proposed to help select useful intrinsic mode function. Finally, the zero-padded fast Fourier transform is performed on the reconstructed signal.
{"title":"Millimeter-wave Radar Ranging Based on CEEMDAN With SVD","authors":"H. Liu, Yong Wang, Mu Zhou, Liangbo Xie, Quan Long, Lixian Fu","doi":"10.1109/APCAP56600.2022.10068866","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10068866","url":null,"abstract":"In this paper, a ranging algorithm is proposed using the short-range Frequency Modulation Continuous Wave (FMCW) radar. Specifically, the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) is presented to decompose the intermediate frequency (IF) signal. Then, the Singular Value Decomposition (SVD) is proposed to help select useful intrinsic mode function. Finally, the zero-padded fast Fourier transform is performed on the reconstructed signal.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121150824","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10068948
Jifeng Lv, M. Su, Yuan’an Liu
A compactly arranged 4-port antenna array with high isolation is presented in this letter. A novel decoupling loop is adopted in this antenna array, this proposed decoupling structure helps with improving the isolation between two adjacent antenna elements and capable of enhancing the bandwidth of the original antenna array. Operation band of this proposed antenna array includes 2.53-3.15 GHz and 5-6.05 GHz. In addition, size of this antenna array is merely 30mm*30mm*0.4mm, which is suitable for its application in cellular devices.
{"title":"A Compactly Arranged 4-Port Antenna Array with High Isolation","authors":"Jifeng Lv, M. Su, Yuan’an Liu","doi":"10.1109/APCAP56600.2022.10068948","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10068948","url":null,"abstract":"A compactly arranged 4-port antenna array with high isolation is presented in this letter. A novel decoupling loop is adopted in this antenna array, this proposed decoupling structure helps with improving the isolation between two adjacent antenna elements and capable of enhancing the bandwidth of the original antenna array. Operation band of this proposed antenna array includes 2.53-3.15 GHz and 5-6.05 GHz. In addition, size of this antenna array is merely 30mm*30mm*0.4mm, which is suitable for its application in cellular devices.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125141878","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10069677
J. Xu, Z. Tian, Kaikai Liu, Ze Li, Zhaoyu Li
Previous ranging or localization systems achieve an accurate time of flight (TOF) estimation based on strict time synchronization between transmitter and receiver, which is difficult to realize in a practical communication system. To tackle this problem, we propose a phase error elimination method to achieve accurate ranging in an asynchronous manner. We implement the proposed method using a software radio platform, and the real experimental results show that the proposed method can achieve a ranging accuracy of 5.6 cm,
{"title":"A Phase Error Elimination Method in Asynchronous Communication System","authors":"J. Xu, Z. Tian, Kaikai Liu, Ze Li, Zhaoyu Li","doi":"10.1109/APCAP56600.2022.10069677","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069677","url":null,"abstract":"Previous ranging or localization systems achieve an accurate time of flight (TOF) estimation based on strict time synchronization between transmitter and receiver, which is difficult to realize in a practical communication system. To tackle this problem, we propose a phase error elimination method to achieve accurate ranging in an asynchronous manner. We implement the proposed method using a software radio platform, and the real experimental results show that the proposed method can achieve a ranging accuracy of 5.6 cm,","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126079749","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}
Due to strong ionospheric distortions and Radio Frequency Interference (RFI), radio astronomy observation at frequencies below 30MHz is not feasible on earth. This paper reviews the space-based antenna technology of current and planned low frequency radio astronomy missions. The technical specification and structure characteristic of antenna has been detailed described.
{"title":"Review of Space-Based Antenna Technology for Low Frequency Radio Astronomy","authors":"Jia Liu, Jixiang Wan, Zhengjun Li, Hao Wang, Qiaoshan Zhang","doi":"10.1109/APCAP56600.2022.10069123","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069123","url":null,"abstract":"Due to strong ionospheric distortions and Radio Frequency Interference (RFI), radio astronomy observation at frequencies below 30MHz is not feasible on earth. This paper reviews the space-based antenna technology of current and planned low frequency radio astronomy missions. The technical specification and structure characteristic of antenna has been detailed described.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125336134","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10069040
Lichao Wang, Lu Zhuang, J. Ouyang
In this paper, we propose a dual-linear polarized ultrawideband tightly coupled dipole array antenna (TCDA) based on the strong mutual coupling effect, The overall geometry consists of cross-located tightly coupled dipoles integrated with a folded Marchand balun that serves as an impedance transformer to achieve a wideband feeding network. The design achieves VSWR< 3.5 across 5.2 - 38.8 GHz at broadside, and VSWR< 3 across 5.7 - 39.6 GHz when scanning down to 60° in the E-, H- and D-planes except 6.8-8.3GHz when scanning to 60 °in the E-plane. For radiation performance, a resistance plane is added to eliminate short-circuit resonance. A strong resonance generated by the 60° scan of the E - plane is moved out of the working frequency band by adding a short-circuit line. The unit cell's total height is only $0.12 lambda_{low} (lambda_{low}$ is the vacuum with the lowest frequency wavelength).
{"title":"A Dual-Linear Polarized Ultrawideband TCDA with Low-Profile","authors":"Lichao Wang, Lu Zhuang, J. Ouyang","doi":"10.1109/APCAP56600.2022.10069040","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069040","url":null,"abstract":"In this paper, we propose a dual-linear polarized ultrawideband tightly coupled dipole array antenna (TCDA) based on the strong mutual coupling effect, The overall geometry consists of cross-located tightly coupled dipoles integrated with a folded Marchand balun that serves as an impedance transformer to achieve a wideband feeding network. The design achieves VSWR< 3.5 across 5.2 - 38.8 GHz at broadside, and VSWR< 3 across 5.7 - 39.6 GHz when scanning down to 60° in the E-, H- and D-planes except 6.8-8.3GHz when scanning to 60 °in the E-plane. For radiation performance, a resistance plane is added to eliminate short-circuit resonance. A strong resonance generated by the 60° scan of the E - plane is moved out of the working frequency band by adding a short-circuit line. The unit cell's total height is only $0.12 lambda_{low} (lambda_{low}$ is the vacuum with the lowest frequency wavelength).","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126953996","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 : 2022-11-04DOI: 10.1109/APCAP56600.2022.10069239
Shuangshuang Zhu, Yue Liu, Pin Wen
This paper put forward spoof surface plasmon polaritons (SSPPs) and resonator to design a bandpass filter (BPF) with wide stopband. First of all, the raised SSPPs is analyzed the dispersion characteristic, which was accompanied by a low-pass filter that devised on account of them. Next, T-shaped resonator was used to design BPF structure. Finally, based on the proposed SSPPs and T-shaped resonator, a BPF with wide stopband can be designed in the frequency range of 1.5-5.1 GHz.
{"title":"Bandpass Filter Based on Spoof Surface Plasmon Polaritons With Wide Stopband","authors":"Shuangshuang Zhu, Yue Liu, Pin Wen","doi":"10.1109/APCAP56600.2022.10069239","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069239","url":null,"abstract":"This paper put forward spoof surface plasmon polaritons (SSPPs) and resonator to design a bandpass filter (BPF) with wide stopband. First of all, the raised SSPPs is analyzed the dispersion characteristic, which was accompanied by a low-pass filter that devised on account of them. Next, T-shaped resonator was used to design BPF structure. Finally, based on the proposed SSPPs and T-shaped resonator, a BPF with wide stopband can be designed in the frequency range of 1.5-5.1 GHz.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122424589","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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