Sonkki, M.; Cabedo Fabrés, M.; Antonino Daviu, E.; Ferrando Bataller, M.; Salonen, ET. (2011). Creation of a magnetic boundary condition in a radiating ground plane to excite antenna modes. IEEE Transactions on Antennas and Propagation. 59(10):3579-3587. doi:10.1109/TAP.2011.2163783
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/35126
Title:
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Creation of a magnetic boundary condition in a radiating ground plane to excite antenna modes
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Author:
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Sonkki, Marko
Cabedo Fabrés, Marta
Antonino Daviu, Eva
Ferrando Bataller, Miguel
Salonen, Erkki T.
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia
Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions
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Issued date:
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Abstract:
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The creation of a magnetic boundary condition into the plane of symmetry in a radiating ground plane of a portable device is proposed to enhance its radiation efficiency and bandwidth. This magnetic boundary condition is ...[+]
The creation of a magnetic boundary condition into the plane of symmetry in a radiating ground plane of a portable device is proposed to enhance its radiation efficiency and bandwidth. This magnetic boundary condition is achieved by exciting the antenna through symmetrical feeding. A novel antenna consisting of a symmetrical folded dipole is presented in order to exemplify how a broad bandwidth and very good radiation properties can be obtained with the proposed technique. The Theory of Characteristic Modes is used to analyze and compare a folded dipole with the symmetrical folded dipole. This study shows how the magnetic boundary condition favors excitation of antenna modes in a broad bandwidth while avoiding excitation of transmission line modes. Two different prototype antennas, a monopole and a symmetrical folded dipole with an LC-balun, were implemented and measured. The measured -6 dB impedance bandwidth of the monopole extends from 0.95 GHz to 2.15 GHz. In turn, the bandwidth of the symmetrical folded dipole extends from 0.90 GHz to 1.96 GHz. The average of the measured total efficiencies at the aforementioned bandwidth is -1.6 dB for both prototypes. The measured maximum total gain at 0.95 GHz is 2.6 dBi for the monopole and 1.9 dBi for the symmetrical folded dipole. © 2011 IEEE.
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Subjects:
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Folded dipole
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Handset antenna
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Magnetic boundary condition
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Radiating ground plane
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Symmetrical antenna feeding
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Theory of characteristic modes
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Antenna mode
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Broad bandwidths
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Characteristic modes
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Folded dipoles
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Ground planes
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Impedance bandwidths
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Plane-of-symmetry
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Portable device
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Prototype antennas
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Radiation efficiency
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Radiation properties
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Total efficiency
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Transmission line mode
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Antenna grounds
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Bandwidth
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Boundary conditions
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Electric impedance
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Magnetism
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Monopole antennas
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Dipole antennas
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Copyrigths:
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Cerrado |
Source:
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IEEE Transactions on Antennas and Propagation. (issn:
0018-926X
)
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DOI:
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10.1109/TAP.2011.2163783
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Publisher:
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Institute of Electrical and Electronics Engineers (IEEE)
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Publisher version:
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http://dx.doi.org/10.1109/TAP.2011.2163783
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Project ID:
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info:eu-repo/grantAgreement/COST//IC0603/EU/Antenna Systems & Sensors for Information Society Technologies/ASSIST/
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Thanks:
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This work was supported by the Finnish Funding Agency for Technology and Innovation, Nokia Devices Oulu, and Pulse Finland. The work of M. Sonkki was supported by the Universidad Politecnica de Valencia and COST IC0603 ASSIST.[+]
This work was supported by the Finnish Funding Agency for Technology and Innovation, Nokia Devices Oulu, and Pulse Finland. The work of M. Sonkki was supported by the Universidad Politecnica de Valencia and COST IC0603 ASSIST.
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Type:
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Artículo
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