Approximate methods to determine the isolation between antennas on vehicles
2016 (English)In: Antennas and Propagation (APSURSI), 2016 IEEE International Symposium on, 2016Conference paper (Refereed)
The isolation between antennas needs to be considered when integrating antennas on vehicles, since poor isolation between antennas can cause interference between radio systems on-board. The electrical size of vehicles at gigahertz frequencies often limits the usage of full-wave methods. This paper therefore evaluates two efficient methods to approximate the antenna isolation; the non-singular transmission integral (NSTI) method and the geometric theory of diffraction (GTD). We present the first evaluation of NSTI for antennas outside line-of-sight (non-LOS). It is shown to provide a 6.5 dB RMS accuracy in the early non-LOS zone for an antenna position sweep on an aircraft at 2 GHz, and for frequency sweeps on a cube and cylinder, the latter only to 5 GHz. The GTD implementation gives a 4.4 dB RMS accuracy for cylinders and simplified aircraft models. Both investigated methods give remarkably accurate results, considering memory requirements and runtime, which makes them interesting for further investigations.
Place, publisher, year, edition, pages
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-197332DOI: 0.1109/APS.2016.7695774ScopusID: 2.0-84997170378OAI: oai:DiVA.org:kth-197332DiVA: diva2:1051801
2016 IEEE International Symposium on Antennas and Propagation (APSURSI)
QC 201612192016-12-032016-12-032017-01-11Bibliographically approved