Dissertation/ Thesis
Passive Antenna Characterization using impedance correlations in diffuse field ; Caractérisation de systèmes antennaires à partir de corrélations d'impédances en champ diffus
| العنوان: | Passive Antenna Characterization using impedance correlations in diffuse field ; Caractérisation de systèmes antennaires à partir de corrélations d'impédances en champ diffus |
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| المؤلفون: | Tamart, Meriem |
| المساهمون: | Electronique, Systèmes de communication et Microsystèmes (ESYCOM), Conservatoire National des Arts et Métiers CNAM (CNAM)-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel, Université Gustave Eiffel, Élodie Richalot |
| المصدر: | https://theses.hal.science/tel-04230613 ; Electronique. Université Gustave Eiffel, 2023. Français. ⟨NNT : 2023UEFL2029⟩. |
| بيانات النشر: | CCSD |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Antenna measurement, Passive characterization, Mode-Stirred reverberation chamber, Impedance correlations, Mesure d'antenne, Caractérisation passive, Chambre réverbérante à brassage de modes, Corrélations d'impédances, [SPI.TRON]Engineering Sciences [physics]/Electronics |
| الوصف: | As communication devices become smaller and more integrated, there is a growing need for suited characterization methods that can accurately determine the characteristics of antennas and the coupling between multiple antennas. In many complex systems, direct measurements at the antenna ports can be difficult or even impossible using traditional methods. This thesis proposes a new approach to characterize antenna performance and coupling that addresses these challenges. Thus, this characterization technique is based on a passive evaluation of antenna performance through signal cross-correlations in the diffuse field. More specifically, the objective of this research is to apply the concept of noise correlation, used in various fields of physics, to electromagnetism to passively measure the impedance matrix between two antennas. In practice, the diffuse field environment is generated in a reverberation chamber excited by a single antenna. Mechanical and source stirring techniques are then combined to obtain the required properties, thus allowing for the passive characterization of mutual and self-impedances of the receiving antennas, and the deduction of other parameters of interest such as gain. It is shown that this cross-correlation method can be extended to evaluate the couplings within a system consisting of more than two elements. This leads to simplifying the coupling matrix measurement of an array and significant time savings in the characterization of large arrays ; Avec la miniaturisation et l’intégration des dispositifs communicants, le développement de méthodes de caractérisation adaptées pour accéder avec précision aux caractéristiques des antennes ainsi qu’au couplage entre plusieurs antennes est nécessaire. En effet, dans les systèmes complexes, il peut être difficile, voire impossible, d’effectuer directement des mesures au niveau des accès des antennes comme dans les méthodes de mesure traditionnelles. Cette thèse vise à proposer une nouvelle méthode de caractérisation des performances des ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | French |
| Relation: | NNT: 2023UEFL2029 |
| الاتاحة: | https://theses.hal.science/tel-04230613 https://theses.hal.science/tel-04230613v1/document https://theses.hal.science/tel-04230613v1/file/TH2023UEFL2029.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.14AB147 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |