Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. On the Radiation Characteristics of FullLoop, HalfLoop and Quasi HalfLoop Bond Wire Antennas
 IEEE Transactions on Antennas and Propagation 66 (2018), Nr.11, S.56725686 ISSN: 0018926X ISSN: 00961973 

 Englisch 
 Zeitschriftenaufsatz 
 Fraunhofer IZM () 
Abstract
The theory, modeling, measurement and analysis of the radiation characteristics of bond wire antennas (BWAs) is presented in this work. We commence with rigorous formulations, and derivations of analytical models for calculating the vector potential, radiated electromagnetic fields and directivity of fullloop BWAs (FLBWAs), considering nonconstant current distribution along the BWAs. Based on the image theory, we derive an analytical model for calculating the directivity of halfloop BWAs (HLBWAs) from that of FLBWAs. Very good correlation is obtained between the directivities calculated analytically using the derived models, and numerically using commercial fullwave solvers, thus validating our analytical approach. We apply the verified models to thoroughly analyze the radiation characteristics of FLBWAs and HLBWAs. The radiation characteristics of a HLBWA is based on the assumption that its reference plane is infinitely large and perfectly conducting. However , for the development of wireless systems, reference planes of finite sizes are required. Therefore, we investigate the impact of realistic dimensions of reference planes. Our results reveal that the radiation characteristics of BWAs referred to as “HLBWAs” in published literature differ significantly from those of true HLBWAs. Hence, we introduce the term “quasi halfloop BWA (QHLBWA)” to describe BWAs with small reference planes. Finally, we analyze the radiation characteristics of QHLBWAs, and compare their radiation patterns to that of HLBWAs. For experimental verification, QHLBWAs were fabricated and measured in the 60 GHz band. Very good correlation was obtained between measurement and simulation results.