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Antenna Q for small antennas with radiation constraints and perturbations
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-7269-5241
2015 (English)In: 2015 9th European Conference on Antennas and Propagation, EuCAP 2015, IEEE conference proceedings, 2015Conference paper (Refereed)Text
Abstract [en]

Lower bounds on antenna Q for small antennas have recently been formulated as an optimization problem. The approach includes antennas modeled with electric and magnetic currents. We show here that constraints on the direction of radiation can increase antenna Q. We also investigate what happens to antenna Q lower bounds for electric dipole antennas when the maximal radiation increases in the presence of a small superimposed magnetic dipole. Such radiation perturbations can be caused by feeding and in coupling between currents. Magneticdipole perturbation yields a new lower antenna Q bound, that is lower than the pure electric dipole bound on antenna Q.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015.
Keyword [en]
antenna Q, electric and magnetic sources, radiation constraints, radiation perturbations, small antennas, Antenna radiation, Dipole antennas, Magnetism, Optimization, Electric dipole, Electric dipole antenna, Lower bounds, Magnetic currents, Magnetic dipole, Magnetic sources, Optimization problems, Small antenna, Radiation
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-181599ISI: 000380533100380ScopusID: 2-s2.0-84949655750ISBN: 9788890701856OAI: oai:DiVA.org:kth-181599DiVA: diva2:909516
Conference
9th European Conference on Antennas and Propagation, EuCAP 2015, 13 May 2015 through 17 May 2015
Note

QC 20160307

Available from: 2016-03-07 Created: 2016-02-02 Last updated: 2016-09-05Bibliographically approved

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