Reduced-Order Models for Fast Antenna Characterization

Abstract : A reduced order model (ROM) for antenna characterization problems is proposed. It exploits the outer dimensions of the antenna under test (AUT) and the geometry of the measurement surface scan and leads to a significant reduction of the required number of field sampling points and therefore time to measure antenna radiation patterns. The inputs of the ROM are the equivalent currents enclosing the AUT and the outputs are their corresponding radiated fields on the measurement surface. By performing the singular value decomposition (SVD) of the radiating operator, we derive the minimal order model of the system and thereby numerically construct the basis of the fields radiated by the AUT. The evaluation of the so-reduced model is expedited by using a discrete empirical interpolation method (DEIM) that returns the sampling positions of the radiated field. The approach is tailored to the antenna characterization problem and specifically the antenna shape and the measurement surface scan. The proposed methodology is general, it can be easily adapted to any type of radiating structures and shape of the field measurement scans. Two experimental results of complex radiating structures measured in near and far field demonstrate the interest and potentialities of the approach. IEEE
Document type :
Journal articles
Complete list of metadatas

https://hal-univ-rennes1.archives-ouvertes.fr/hal-02181461
Contributor : Laurent Jonchère <>
Submitted on : Friday, July 12, 2019 - 10:12:56 AM
Last modification on : Friday, September 20, 2019 - 12:06:33 PM

Identifiers

Citation

B. Fuchs, A.G. Polimeridis. Reduced-Order Models for Fast Antenna Characterization. IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, 2019, ⟨10.1109/TAP.2019.2922783⟩. ⟨hal-02181461⟩

Share

Metrics

Record views

25