Akce ČVUT

Prof. Buon Kiong Lau: Theory and Applications of Characteristic Modes

18.04.2017   14:30

The Theory of Characteristic Modes (TCM) had its humble beginnings in the early 1970’s, when it was first conceived for analyzing the scattering of plane waves from arbitrary source directions by a given object in their paths. The method was then refined and also applied to analyze the radiation from an object (antenna) due to electric field excitations. The beauty of TCM lies in its ability to fully characterize the radiation and scattering properties of an arbitrary object based only on the object’s geometry and material properties. This ability provides valuable insights into how an antenna can be optimally excited, independent of the feeding arrangement. This feature has led to its use to design integrated antennas in the High Frequency (HF) band for land vehicles, ships and aircraft. However, TCM has largely remained a specialist field until it was rediscovered for aiding the design of mobile handset antennas about a decade ago. In this lecture, I will present the main principles of TCM as well as its applications to antenna design. In particular, I will focus on the application of TCM to designing optimal multi-antennas for compact Multiple-Input Multiple-Output (MIMO) terminals, where the inherently orthogonal characteristic modes are ideal for achieving efficient and uncorrelated MIMO antennas. Moreover, I will also introduce some latest advances in the field (e.g., from the 2016 Special Issue on the topic in the IEEE Transactions on Antennas and Propagation), which further improves on the applicability of TCM to a much wider context.

Místo konání

ČVUT-FEL, Technická 2, místnost č. 80

Pořadatel

Katedra elektromagnetického pole, IEEE

Kontaktní osoba

Ing. Tomáš Kořínek, Ph.D., korinet@fel.cvut.cz