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Session: THP1A9:30 AM Thursday, June 19, 2008 Room: Hall A3 |
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Session: THP1A | Interactive Forum: |
Chair: | Daniela Staiculescu, Georgia Institute of Technology |
Co-Chair: | Ronglin Li, Georgia Institute of Technology |
| | THP1A-01 | Source Stirring Technology for Automotive Antenna Measurement | 1116 | M. Albrecht1, J. Luy1, P. Russer2, 1Daimler AG, Ulm, Germany, 2TU Muenchen, München, Germany |
| For today’s and future communication and telematics systems efficient test systems in production and service are needed. These tests are able to be accomplished at as small an expenditure as possible in a normal manufacturing or service environment. A statistically uniform E-field is created in a service environment by setup the source stirring technology. The uniformity of the E-field was theoretically evaluated. With simulation of a service environment we can show, that the adoption of the source stirring technology can avoid the influence of distracting objects to the measurement results. | | |
THP1A-02 | On The Slow Wave Behaviour Of The Shielded Mushroom Structure | 1725 | F. Elek, G. V. Eleftheriades, University of Toronto, Toronto, Canada |
| The dispersion theory of the shielded mushroom structure is examined using multiconductor transmission line theory (MTL), which in the low frequency limit reveals that a slow, forward wave mode is supported. The theory shows that the degree of the slow wave effect is controlled by the distance between the shielding conductor and the patch (mushroom) layer, with a significant slowing of the mode possible as the aforementioned distance is decreased. By examining the low frequency modal eigenvector, in conjunction with the dispersion equation, a physical explanation of the mechanism causing the slowing is arrived at. The theory is compared with full-wave finite element simulations, with excellent correspondence between the two observed. | | |
THP1A-03 | Far Field Measurement on a Ka-Band Substrate-Integrated Waveguide Antenna Array with Polarization Multiplexing | 1731 | K. Kuhlmann, K. Rezer, A. F. Jacob, TU Hamburg-Harburg, Hamburg, Germany |
| This paper presents the design, implementation, and test of a compact antenna array providing polarization multiplexing at 30 GHz. The array elements are realized as open-ended substrate-integrated waveguides (SIW). Focus of this paper is on the far field analysis of the array for different steering angles and polarizations. Simulation as well as measurement data is presented and discussed | | |
THP1A-04 | Dielectric resonance in composites filled with metal-coated microspheres | 1319 | J. Liu, N. Bowler, Iowa State University, Ames, United States |
| Using formulas obtained from the first-order solutions of Mie theory in an effective medium approach, several example computations of bulk permittivity of a composite are given in different cases of layered spherical inclusions dispersed in a matrix. It is theoretically shown that a simple, isotropic negative-permittivity composite material could be constructed by suitable choice of geometrical and dielectric parameters of the constituents. | | |
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