Pub Date : 1900-01-01DOI: 10.1109/IWAT.2017.7915349
M. Wohler, M. Hartmann, T. Nowak, A. Heuberger
In this paper, we elaborate a reference antenna in terms of direction of arrival (DOA) estimation accuracy to verify its reliability under realistic propagation conditions. Estimation accuracy decreases for the reference antenna due to environmental influences. Our main contribution is modeling such non-anechoic environment in the simulation by considering proximity to earth with surface roughness, antenna cover against climatic influences and height of the stacked-up system over earth in a real-world deployment. We developed a ring extension for the antenna, such environmental influences are minimized and the DOA estimation accuracy is improved again. The overall localization performance of a system with several DOA estimation sensor nodes for different antenna configurations is proven in a simulation environment. The results show an improvement of the localization accuracy for the optimized antenna.
{"title":"Impact of antenna pattern modeling errors on RSSI-based DOA estimation","authors":"M. Wohler, M. Hartmann, T. Nowak, A. Heuberger","doi":"10.1109/IWAT.2017.7915349","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915349","url":null,"abstract":"In this paper, we elaborate a reference antenna in terms of direction of arrival (DOA) estimation accuracy to verify its reliability under realistic propagation conditions. Estimation accuracy decreases for the reference antenna due to environmental influences. Our main contribution is modeling such non-anechoic environment in the simulation by considering proximity to earth with surface roughness, antenna cover against climatic influences and height of the stacked-up system over earth in a real-world deployment. We developed a ring extension for the antenna, such environmental influences are minimized and the DOA estimation accuracy is improved again. The overall localization performance of a system with several DOA estimation sensor nodes for different antenna configurations is proven in a simulation environment. The results show an improvement of the localization accuracy for the optimized antenna.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129564955","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915358
Yutong Yang, D. Kwon
An indirect impedance measurement approach that does not require direct cable attachment or large space using a two-port network is presented. Using a straight wire monopole as an interrogating antenna and measured impedances of three calibration standards, the input impedance of a small spherical helix dipole over a ground plane is retrieved. It is found that accurate result is obtained around the dipole resonance frequency. The accuracy and sources of error are discussed.
{"title":"Indirect impedance measurement of a small dipole antenna over a ground plane","authors":"Yutong Yang, D. Kwon","doi":"10.1109/IWAT.2017.7915358","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915358","url":null,"abstract":"An indirect impedance measurement approach that does not require direct cable attachment or large space using a two-port network is presented. Using a straight wire monopole as an interrogating antenna and measured impedances of three calibration standards, the input impedance of a small spherical helix dipole over a ground plane is retrieved. It is found that accurate result is obtained around the dipole resonance frequency. The accuracy and sources of error are discussed.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114668664","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915380
S. Y. Loon, B. Soong
This paper shows the analysis of a typical Printed Circuit Board (PCB) Split Ring Resonator (SRR) Electrically Small Antenna (ESA) based on lumped circuit model. Having technical limitations such as 5 mils copper trace width and trace separation of 3.5 mils, it inherently lacks sufficient resistance to operate efficiently. Through a series of different SRR configurations, this can be improved to shift the SRR ESA to resonate at a lower frequency. A planar configuration of Four Stubs Hexagonal Double SRR (FSHD-SRR) ESA metaresonator is proposed to operate sufficiently to cover the WiFi 2.4 GHz band. Then, the proposed design is simulated and fabricated over the entire WiFi 2.4 GHz frequency range from channels 1 (2.412 GHz) to 13 (2.472 GHz) with a reflection coefficient, S11 of less than −10 dB for the extreme channels and −30 dB for the center channel 7 (2.442 GHz).
{"title":"Design of 2.45 GHz ESA metaresonator","authors":"S. Y. Loon, B. Soong","doi":"10.1109/IWAT.2017.7915380","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915380","url":null,"abstract":"This paper shows the analysis of a typical Printed Circuit Board (PCB) Split Ring Resonator (SRR) Electrically Small Antenna (ESA) based on lumped circuit model. Having technical limitations such as 5 mils copper trace width and trace separation of 3.5 mils, it inherently lacks sufficient resistance to operate efficiently. Through a series of different SRR configurations, this can be improved to shift the SRR ESA to resonate at a lower frequency. A planar configuration of Four Stubs Hexagonal Double SRR (FSHD-SRR) ESA metaresonator is proposed to operate sufficiently to cover the WiFi 2.4 GHz band. Then, the proposed design is simulated and fabricated over the entire WiFi 2.4 GHz frequency range from channels 1 (2.412 GHz) to 13 (2.472 GHz) with a reflection coefficient, S11 of less than −10 dB for the extreme channels and −30 dB for the center channel 7 (2.442 GHz).","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117079920","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915340
Jingni Zhong, E. Alwan, J. Volakis
We present a novel ultra-wideband (UWB) dual-linear polarized phased array designed for simultaneous transmit and receive (STAR) monostatic antenna systems. The dual-linear polarized array employs a tightly coupled dipole topology that achieves an UWB operation from 2GHz to 18GHz, viz 9∶1 bandwidth. Also, its port to port isolation is at least 45dB at broadside. The array consists of tightly coupled dipoles that are integrated with a folded Marchand balun. The latter serves as a balanced feed to a 50Ω source. One of the array polarizations is used for transmission and the other for reception. To improve scanning performance, the traditional dielectric superstrate is replaced with a frequency selective surface. Notably, the proposed tightly coupled dipole array (TCDA) scans down to 60° in both E and H planes with a port to port isolation of at least 35dB across the entire 9∶1 band.
{"title":"Ultra-wideband dual-linear polarized phased array with 60° scanning for simultaneous transmit and receive systems","authors":"Jingni Zhong, E. Alwan, J. Volakis","doi":"10.1109/IWAT.2017.7915340","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915340","url":null,"abstract":"We present a novel ultra-wideband (UWB) dual-linear polarized phased array designed for simultaneous transmit and receive (STAR) monostatic antenna systems. The dual-linear polarized array employs a tightly coupled dipole topology that achieves an UWB operation from 2GHz to 18GHz, viz 9∶1 bandwidth. Also, its port to port isolation is at least 45dB at broadside. The array consists of tightly coupled dipoles that are integrated with a folded Marchand balun. The latter serves as a balanced feed to a 50Ω source. One of the array polarizations is used for transmission and the other for reception. To improve scanning performance, the traditional dielectric superstrate is replaced with a frequency selective surface. Notably, the proposed tightly coupled dipole array (TCDA) scans down to 60° in both E and H planes with a port to port isolation of at least 35dB across the entire 9∶1 band.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127847689","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915345
P. Turalchuk, I. Munina, V. Pleskachev, V. Kirillov, O. Vendik, I. Vendik
Biological medium surrounding an implanted device is characterized by a high dielectric permittivity and a loss factor. This fact results in a degradation of the electromagnetic signal by a strong wave reflection from the interface and refraction phenomena accompanied by the total internal reflection at the interface between the biological tissue and the air. Results of modeling and experimental investigations of electromagnetic waves propagating over the surface of a human body are also discussed. The results of numerical simulations of wave propagation parameters such as attenuation and phase velocity of the waves on the plane and curved surfaces are confirmed by measured data. Some examples of printed antennas for near field and far field implementation are considered. A miniature dipole antenna with SAW resonator was suggested and realized for wireless remote temperature monitoring.
{"title":"In-body and on-body wave propagation: Modeling and measurements","authors":"P. Turalchuk, I. Munina, V. Pleskachev, V. Kirillov, O. Vendik, I. Vendik","doi":"10.1109/IWAT.2017.7915345","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915345","url":null,"abstract":"Biological medium surrounding an implanted device is characterized by a high dielectric permittivity and a loss factor. This fact results in a degradation of the electromagnetic signal by a strong wave reflection from the interface and refraction phenomena accompanied by the total internal reflection at the interface between the biological tissue and the air. Results of modeling and experimental investigations of electromagnetic waves propagating over the surface of a human body are also discussed. The results of numerical simulations of wave propagation parameters such as attenuation and phase velocity of the waves on the plane and curved surfaces are confirmed by measured data. Some examples of printed antennas for near field and far field implementation are considered. A miniature dipole antenna with SAW resonator was suggested and realized for wireless remote temperature monitoring.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"91 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129253139","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915363
J. Howard, C. Fung
A passive multi-beam antenna system with beamforming technology that can be used to increase quality of service, network capacity, and spectrum to meet the current and future data usage and network capacity demands is presented. The system presented can produce as many as 32 narrow high gain beams within a 90 or 120 degree sector with beam crossing set to be between 3 to 15 dB. Each beam provides a capacity and throughput multiplication over a traditional sector, resulting in a spectrum multiplication of as many as 32 times. With the use of multiplexers several channels can be combined and transmitted. Each beam can provide multi-band/ multi-channel transmission with a single antenna system to further enhance user capacity and throughput.
{"title":"Clever Dumb Antenna: Passive multi-beam antenna for broadband wireless communication","authors":"J. Howard, C. Fung","doi":"10.1109/IWAT.2017.7915363","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915363","url":null,"abstract":"A passive multi-beam antenna system with beamforming technology that can be used to increase quality of service, network capacity, and spectrum to meet the current and future data usage and network capacity demands is presented. The system presented can produce as many as 32 narrow high gain beams within a 90 or 120 degree sector with beam crossing set to be between 3 to 15 dB. Each beam provides a capacity and throughput multiplication over a traditional sector, resulting in a spectrum multiplication of as many as 32 times. With the use of multiplexers several channels can be combined and transmitted. Each beam can provide multi-band/ multi-channel transmission with a single antenna system to further enhance user capacity and throughput.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121608232","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915356
Le Chang, Yue Li, Zhijun Zhang, Zhenghe Feng
This paper presents an air-cavity-fed four-element slot antenna array, which is fabricated using a modified silicon micromachining process. Different from traditional silicon micromachining process, the silicon dielectric is fully plated with gold without any silicon being exposed to the electromagnetic environment. In this modified silicon micromachining process, air cavities can be easily obtained to avoid substrate loss, with the merit of low loss. This new silicon micromachining process is recently introduced to the millimeter-wave antenna design, with the basic procedures of through-silicon-wafer dry etching and gold plating. An example of a four-element slot antenna array is constructed, characterized, and tested at 60 GHz. The proposed slot array is inspired by breaking the field symmetry of the channelized coplanar waveguide. By alternatively and periodically arranging the shielding blocks, a four-element slot array is achieved and fed by an air cavity, which is easily achieved using the modified process. A prototype is fabricated with the measured results including an impedance bandwidth of 10.1% from 57.15 to 63.23 GHz and a fan-shaped beam with a peak broadside gain of 12.1 dBi.
{"title":"60-GHz air-cavity-fed slot antenna array using modified silicon micromachining process","authors":"Le Chang, Yue Li, Zhijun Zhang, Zhenghe Feng","doi":"10.1109/IWAT.2017.7915356","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915356","url":null,"abstract":"This paper presents an air-cavity-fed four-element slot antenna array, which is fabricated using a modified silicon micromachining process. Different from traditional silicon micromachining process, the silicon dielectric is fully plated with gold without any silicon being exposed to the electromagnetic environment. In this modified silicon micromachining process, air cavities can be easily obtained to avoid substrate loss, with the merit of low loss. This new silicon micromachining process is recently introduced to the millimeter-wave antenna design, with the basic procedures of through-silicon-wafer dry etching and gold plating. An example of a four-element slot antenna array is constructed, characterized, and tested at 60 GHz. The proposed slot array is inspired by breaking the field symmetry of the channelized coplanar waveguide. By alternatively and periodically arranging the shielding blocks, a four-element slot array is achieved and fed by an air cavity, which is easily achieved using the modified process. A prototype is fabricated with the measured results including an impedance bandwidth of 10.1% from 57.15 to 63.23 GHz and a fan-shaped beam with a peak broadside gain of 12.1 dBi.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"778 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131336832","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915377
Abdul Quddious, S. Nikolaou, M. Antoniades
Arbitrary-length zero-degree phase-shifting lines are presented at X-band that are based on negative-refractive-index transmission-line (NRI-TL) metamaterials implemented in substrate integrated coaxial line (SICL) technology. Initially, a host substrate integrated coaxial line was loaded with a series interdigital capacitor and shunt printed inductors to form a single NRI-TL metamaterial unit cell. Subsequently, multi-stage NRI-TL metamaterial lines were realized by cascading multiple NRI-TL metamaterial unit cells. The performance of the metamaterial lines is analyzed based on their reflection loss, insertion loss, radiation loss and insertion phase for different lengths of line ranging from λ/5 to λ at 10 GHz. It is shown that the radiation loss remains below 0.003% of the total losses for all presented lengths of metamaterial lines, while exhibiting good reflection and transmission characteristics. These results indicate that the proposed zero-phase NRI-TL metamaterial lines in SICL technology are well suited for very low-loss guided-wave applications.
{"title":"Arbitrary length zero-phase substrate integrated coaxial lines using NRI-TL metamaterials","authors":"Abdul Quddious, S. Nikolaou, M. Antoniades","doi":"10.1109/IWAT.2017.7915377","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915377","url":null,"abstract":"Arbitrary-length zero-degree phase-shifting lines are presented at X-band that are based on negative-refractive-index transmission-line (NRI-TL) metamaterials implemented in substrate integrated coaxial line (SICL) technology. Initially, a host substrate integrated coaxial line was loaded with a series interdigital capacitor and shunt printed inductors to form a single NRI-TL metamaterial unit cell. Subsequently, multi-stage NRI-TL metamaterial lines were realized by cascading multiple NRI-TL metamaterial unit cells. The performance of the metamaterial lines is analyzed based on their reflection loss, insertion loss, radiation loss and insertion phase for different lengths of line ranging from λ/5 to λ at 10 GHz. It is shown that the radiation loss remains below 0.003% of the total losses for all presented lengths of metamaterial lines, while exhibiting good reflection and transmission characteristics. These results indicate that the proposed zero-phase NRI-TL metamaterial lines in SICL technology are well suited for very low-loss guided-wave applications.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133491390","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915355
E. Andreou, T. Zervos, E. Varouti, M. Pissas, C. Christides, A. Alexandridis, G. Fikioris
In this paper we investigate the influence of dielectric and magnetic losses of an Epoxy bonded Yttrium Iron Garnet (YIG-Epoxy) composite substrate on the performance of a reconfigurable microstrip patch antenna. The antenna under investigation is a microstrip patch antenna printed on a 60/40 w/w% YIG-Epoxy composite substrate and controlled by an externally applied DC magnetic field. It is observed that high dielectric losses of the composite substrate can dramatically deteriorate the radiation efficiency of the proposed antenna in the demagnetized state, while in the magnetized state the magnitude of the resonance linewidth (ΔH) of the composite substrate is the main parameter responsible for the reduction or improvement of the radiation efficiency. Considerable effort has been made to fabricate a YIG-Epoxy substrate with improved properties regarding dielectric loss tangent and magnetic resonance linewidth. The prototyping and characterization of a reconfigurable patch antenna on the “improved” YIG-Epoxy substrate is also presented.
{"title":"Magneto-dielectric substrate influence on the efficiency of a reconfigurable patch antenna","authors":"E. Andreou, T. Zervos, E. Varouti, M. Pissas, C. Christides, A. Alexandridis, G. Fikioris","doi":"10.1109/IWAT.2017.7915355","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915355","url":null,"abstract":"In this paper we investigate the influence of dielectric and magnetic losses of an Epoxy bonded Yttrium Iron Garnet (YIG-Epoxy) composite substrate on the performance of a reconfigurable microstrip patch antenna. The antenna under investigation is a microstrip patch antenna printed on a 60/40 w/w% YIG-Epoxy composite substrate and controlled by an externally applied DC magnetic field. It is observed that high dielectric losses of the composite substrate can dramatically deteriorate the radiation efficiency of the proposed antenna in the demagnetized state, while in the magnetized state the magnitude of the resonance linewidth (ΔH) of the composite substrate is the main parameter responsible for the reduction or improvement of the radiation efficiency. Considerable effort has been made to fabricate a YIG-Epoxy substrate with improved properties regarding dielectric loss tangent and magnetic resonance linewidth. The prototyping and characterization of a reconfigurable patch antenna on the “improved” YIG-Epoxy substrate is also presented.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132233199","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 : 1900-01-01DOI: 10.1109/IWAT.2017.7915350
S. Goudos, K. Siakavara, C. Kalialakis
We present an arbitrary-shaped patch antenna design procedure. The design technique is based on a variant of Biogeography Based Optimization (BBO) algorithm. In this paper, we apply Opposition-Based Learning (OBL) concepts for antenna design. More specifically, we use a new Modified Biogeography Based Optimization (BBO) algorithm enhanced with OBL techniques. The preliminary results of the proposed method indicate the advantages and applicability of our approach.
{"title":"Application of Opposition-Based Learning concepts for arbitrary patch antenna design for wireless communications","authors":"S. Goudos, K. Siakavara, C. Kalialakis","doi":"10.1109/IWAT.2017.7915350","DOIUrl":"https://doi.org/10.1109/IWAT.2017.7915350","url":null,"abstract":"We present an arbitrary-shaped patch antenna design procedure. The design technique is based on a variant of Biogeography Based Optimization (BBO) algorithm. In this paper, we apply Opposition-Based Learning (OBL) concepts for antenna design. More specifically, we use a new Modified Biogeography Based Optimization (BBO) algorithm enhanced with OBL techniques. The preliminary results of the proposed method indicate the advantages and applicability of our approach.","PeriodicalId":289886,"journal":{"name":"2017 International Workshop on Antenna Technology: Small Antennas, Innovative Structures, and Applications (iWAT)","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114730750","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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