Pub Date : 2015-03-04DOI: 10.1109/IWAT.2015.7365324
Q. Lou, L. Tan, Y. Poo, R. Wu
A new type of frequency reconfigurable antenna, the ferrite slab loaded substrate integrated waveguide (SIW) antenna, is proposed. Due to the loaded ferrite, the operating frequency of the antenna can be tuned in a wide frequency range by bias magnetic field and the position of ferrite slab in the antenna. Three example reconfigurable SIW antennas are designed, fabricated and measured. The experimental results prove the frequency tunability of the antennas and show the tunable range could be much larger than that of electronic reconfigurable antennas. The radiation pattern and gain of the antenna characterize their good radiation performance which may be promising in wireless communication systems.
{"title":"Ferrite-loaded SIW antenna - A new type of reconfigurable antenna","authors":"Q. Lou, L. Tan, Y. Poo, R. Wu","doi":"10.1109/IWAT.2015.7365324","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365324","url":null,"abstract":"A new type of frequency reconfigurable antenna, the ferrite slab loaded substrate integrated waveguide (SIW) antenna, is proposed. Due to the loaded ferrite, the operating frequency of the antenna can be tuned in a wide frequency range by bias magnetic field and the position of ferrite slab in the antenna. Three example reconfigurable SIW antennas are designed, fabricated and measured. The experimental results prove the frequency tunability of the antennas and show the tunable range could be much larger than that of electronic reconfigurable antennas. The radiation pattern and gain of the antenna characterize their good radiation performance which may be promising in wireless communication systems.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"4227 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117312797","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365266
Y. K. Cho, H. W. Son, C. H. Lee
Two kinds of transmission-resonant structure are described: transmission-resonant aperture type and transmission-resonant cavity type. The transmission cross sections at resonance are found to be (2G/4π)λ2 [m2] (G:gain) for both structures. It is also seen that a single transmission-resonant aperture structure, like a ridged circular aperture, can be synthesized with input and output coupling irises when the distance between them forms a transmission-resonant cavity structure.
{"title":"Transmission resonance through small apertures in conducting screen","authors":"Y. K. Cho, H. W. Son, C. H. Lee","doi":"10.1109/IWAT.2015.7365266","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365266","url":null,"abstract":"Two kinds of transmission-resonant structure are described: transmission-resonant aperture type and transmission-resonant cavity type. The transmission cross sections at resonance are found to be (2G/4π)λ2 [m2] (G:gain) for both structures. It is also seen that a single transmission-resonant aperture structure, like a ridged circular aperture, can be synthesized with input and output coupling irises when the distance between them forms a transmission-resonant cavity structure.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127399479","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365278
Norakamon Wongsin, Thanakarn Suangun, C. Mahatthanajatuphat, P. Akkaraekthalin
A high gain multiband circular loop antenna with ring resonator reflectors by using FSS technique reaches responsibility in applications for multiband operation and enhanced gain. The applications of multiband operation include WLAN IEEE802.11 b/g (2.4-2.484 GHz), WiMAX (3.3-3.8 GHz), and WLAN IEEE802.11a (5.15-5.35 GHz), consequently. Moreover the presented antenna enhances the gain using the technique of FSS with maximum gains of 9.14 dBi, 11.1 dBi, and 6.64 dBi at the operating frequencies of 2.45 GHz, 3.5 GHz, and 5.25 GHz, respectively. The antenna dimension is about 120 mm × 120 mm × 79.65 mm. The antenna is fed by using the coplanar stripe line. Designed details and results of the proposed antenna are presented and discussed.
{"title":"High gain multiband circular loop antenna with ring resonators reflectors by using FSS technique","authors":"Norakamon Wongsin, Thanakarn Suangun, C. Mahatthanajatuphat, P. Akkaraekthalin","doi":"10.1109/IWAT.2015.7365278","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365278","url":null,"abstract":"A high gain multiband circular loop antenna with ring resonator reflectors by using FSS technique reaches responsibility in applications for multiband operation and enhanced gain. The applications of multiband operation include WLAN IEEE802.11 b/g (2.4-2.484 GHz), WiMAX (3.3-3.8 GHz), and WLAN IEEE802.11a (5.15-5.35 GHz), consequently. Moreover the presented antenna enhances the gain using the technique of FSS with maximum gains of 9.14 dBi, 11.1 dBi, and 6.64 dBi at the operating frequencies of 2.45 GHz, 3.5 GHz, and 5.25 GHz, respectively. The antenna dimension is about 120 mm × 120 mm × 79.65 mm. The antenna is fed by using the coplanar stripe line. Designed details and results of the proposed antenna are presented and discussed.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125876295","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365300
Hong-jib Yoon, Oh TaeckKeun, Yongshik Lee, Byung-Wook Min
This structure of phased array antennas is designed to provide the directional properties of beam through analog beam-forming and do hybrid beam-forming which can support multi user from digital unit or provide a specific user with multi-channel or directional properties of narrower beam. Each antenna of phased array structure is dual-polarization antenna which can get the target figure of channel with a half of array size of single-polarization antenna. It is 2 × 6 array structure with total 4 channels, which consist of 2 × 3 array antennas respectively.
{"title":"Phased array antennas and antenna interference control for hybrid adaptive beam-forming","authors":"Hong-jib Yoon, Oh TaeckKeun, Yongshik Lee, Byung-Wook Min","doi":"10.1109/IWAT.2015.7365300","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365300","url":null,"abstract":"This structure of phased array antennas is designed to provide the directional properties of beam through analog beam-forming and do hybrid beam-forming which can support multi user from digital unit or provide a specific user with multi-channel or directional properties of narrower beam. Each antenna of phased array structure is dual-polarization antenna which can get the target figure of channel with a half of array size of single-polarization antenna. It is 2 × 6 array structure with total 4 channels, which consist of 2 × 3 array antennas respectively.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124216633","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365286
Jin-Kyoung Du, Yuna Kim, J. Yook, Jongwon Lee, J. Choi
When a multilayered PCB is located in a metallic enclosure, resonant modes of the enclosure and the PCB can affect coupling phenomena. In this paper, coupling effects of incident electromagnetic waves to a multilayered PCB in a metallic enclosure is measured and analyzed. Several peaks are observed at the measured results in the frequency domain, and it is found that the peaks are generated at the enclosure resonant frequencies, as well as the PCB resonant frequency.
{"title":"Coupling effects of incident electromagnetic waves to multilayered PCBs in metallic enclosures","authors":"Jin-Kyoung Du, Yuna Kim, J. Yook, Jongwon Lee, J. Choi","doi":"10.1109/IWAT.2015.7365286","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365286","url":null,"abstract":"When a multilayered PCB is located in a metallic enclosure, resonant modes of the enclosure and the PCB can affect coupling phenomena. In this paper, coupling effects of incident electromagnetic waves to a multilayered PCB in a metallic enclosure is measured and analyzed. Several peaks are observed at the measured results in the frequency domain, and it is found that the peaks are generated at the enclosure resonant frequencies, as well as the PCB resonant frequency.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121924666","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365312
Y. Yoon, Seahee Hwangbo, Arian Rahimi, Sheng-Po Fang, T. Schumann
Millimeter wave antennas are integrated in the glass interposer layer for wireless inter-/intra chip/board communications. For in-plane communication, a disc loaded monopole antenna with an omni-directional radiation pattern is designed while for out-of plane communication, a similar architecture with patch mode radiation is configured. These antennas are useful for wireless interconnects in three dimensional integrated systems in package.
{"title":"Glass interposer integrated millimeter wave antennas for inter-/intra chip communications","authors":"Y. Yoon, Seahee Hwangbo, Arian Rahimi, Sheng-Po Fang, T. Schumann","doi":"10.1109/IWAT.2015.7365312","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365312","url":null,"abstract":"Millimeter wave antennas are integrated in the glass interposer layer for wireless inter-/intra chip/board communications. For in-plane communication, a disc loaded monopole antenna with an omni-directional radiation pattern is designed while for out-of plane communication, a similar architecture with patch mode radiation is configured. These antennas are useful for wireless interconnects in three dimensional integrated systems in package.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122565459","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365310
A. Bisognin, D. Titz, C. Luxey, G. Jacquemod, R. Pilard, F. Gianesello, D. Gloria, C. Laporte, H. Ezzedine, Jorge R. Costa, E. Lima, C. Fernandes, F. Devillers
This paper provides an overview of the authors' research work to develop low-cost antennas and packaging technologies for 60GHz and 120GHz high speed data rate communications. First, a WiGig module designed in a low cost High-Density-Interconnect organic packaging technology is briefly depicted. The linearly polarized antennas integrated in a 12×12×0.5 mm3 ball-grid-array module exhibit a realized gain higher than 5 dBi over the entire WiGig band. Then, in order to address the Millimeter-Wave backhaul applications while leveraging the previous achievement, a lens-casing solution is proposed. The achievable performance with a plastic (ABS-M30) lens manufactured using a rapid 3D printing prototyping technique is validated at both 60 GHz and 120 GHz.
{"title":"Millimeter-wave antenna-in-package solutions for WiGig and backhaul applications","authors":"A. Bisognin, D. Titz, C. Luxey, G. Jacquemod, R. Pilard, F. Gianesello, D. Gloria, C. Laporte, H. Ezzedine, Jorge R. Costa, E. Lima, C. Fernandes, F. Devillers","doi":"10.1109/IWAT.2015.7365310","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365310","url":null,"abstract":"This paper provides an overview of the authors' research work to develop low-cost antennas and packaging technologies for 60GHz and 120GHz high speed data rate communications. First, a WiGig module designed in a low cost High-Density-Interconnect organic packaging technology is briefly depicted. The linearly polarized antennas integrated in a 12×12×0.5 mm3 ball-grid-array module exhibit a realized gain higher than 5 dBi over the entire WiGig band. Then, in order to address the Millimeter-Wave backhaul applications while leveraging the previous achievement, a lens-casing solution is proposed. The achievable performance with a plastic (ABS-M30) lens manufactured using a rapid 3D printing prototyping technique is validated at both 60 GHz and 120 GHz.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122785412","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365374
Sang-Gyu Ha, Jeahoon Cho, Eun-Ki Kim, Kyung‐Young Jung
Recently, based on a 2-pole complex rational function, an accurate and efficient finite-difference time domain (FDTD) algorithm was introduced for many types of dispersive media. In this work, we consider a dispersive FDTD method using a quartic complex rational function (QCRF). It is of great importance to investigate two numerical aspects: the numerical accuracy and the numerical stability. Numerical examples are used to illustrate these numerical aspects of QCRF-FDTD.
{"title":"On numerical aspects of FDTD dispersive modeling using a quartic complex rational function","authors":"Sang-Gyu Ha, Jeahoon Cho, Eun-Ki Kim, Kyung‐Young Jung","doi":"10.1109/IWAT.2015.7365374","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365374","url":null,"abstract":"Recently, based on a 2-pole complex rational function, an accurate and efficient finite-difference time domain (FDTD) algorithm was introduced for many types of dispersive media. In this work, we consider a dispersive FDTD method using a quartic complex rational function (QCRF). It is of great importance to investigate two numerical aspects: the numerical accuracy and the numerical stability. Numerical examples are used to illustrate these numerical aspects of QCRF-FDTD.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124950653","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365272
H. Mori, Y. Aoki, N. Kikuma, H. Hirayama, K. Sakakibara
This paper examines the influence of metal plates to reduce the leakage electro-magnetic field on WPT using longitudinal winding coils with direct or indirect feeding.
本文研究了采用直接或间接进给的纵向绕组线圈，金属板对减少泄漏电磁场的影响。
{"title":"Influence of metal plate on longitudinal winding coils in wireless power transfer with magnetically coupled resonance","authors":"H. Mori, Y. Aoki, N. Kikuma, H. Hirayama, K. Sakakibara","doi":"10.1109/IWAT.2015.7365272","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365272","url":null,"abstract":"This paper examines the influence of metal plates to reduce the leakage electro-magnetic field on WPT using longitudinal winding coils with direct or indirect feeding.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133985748","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 : 2015-03-04DOI: 10.1109/IWAT.2015.7365285
R. Kataoka, K. Nishimori, Jynpei Miyazawa, N. Tran, T. Imai
Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by employing a large number of antennas at a base station. However, the interference cancellation with maximum ratio combining (MRC) does not sufficiently work when the circular array is used for the purpose on the circular cell, because the sidelobe level in the circular array is increased compared to the linear array. In this paper, an actual propagation channel was measured by using a wideband channel sounder with cylindrical array in 2 GHz band at a microcell environment. Moreover, we verify the effectiveness of the interference rejection when using the hybrid algorithm which employs the MRC on the analog part and zero forcing (ZF) in the digital processing part.
{"title":"Performance evaluation of massive MIMO with analog-digital hybrid processing in a real microcell environment","authors":"R. Kataoka, K. Nishimori, Jynpei Miyazawa, N. Tran, T. Imai","doi":"10.1109/IWAT.2015.7365285","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365285","url":null,"abstract":"Massive MIMO enables the improvement on the transmission rate without increasing the burden on the signal processing by employing a large number of antennas at a base station. However, the interference cancellation with maximum ratio combining (MRC) does not sufficiently work when the circular array is used for the purpose on the circular cell, because the sidelobe level in the circular array is increased compared to the linear array. In this paper, an actual propagation channel was measured by using a wideband channel sounder with cylindrical array in 2 GHz band at a microcell environment. Moreover, we verify the effectiveness of the interference rejection when using the hybrid algorithm which employs the MRC on the analog part and zero forcing (ZF) in the digital processing part.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133491701","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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