Full metadata record
|dc.contributor||Department of Electronic and Information Engineering||en_US|
|dc.contributor.advisor||Wong, Kainam Thomas (EIE)||-|
|dc.contributor.advisor||Tam, Wai-yip (EIE)||-|
|dc.creator||Khan, Mohammad Asaduzzaman||-|
|dc.publisher||Hong Kong Polytechnic University||-|
|dc.rights||All rights reserved||en_US|
|dc.title||Phenomenological modeling of circular arrays of dipole-antennas||en_US|
|dcterms.abstract||In an array of antennas, the inter-antenna mutual coupling can greatly affect the array's overall performance in various application, such as direction-of-arrival (DOA) estimation and beamforming. For a uniform circular array (UCA) of identical dipoles oriented perpendicular or radial to the circle plane, this thesis advances a simple expression of their electromagnetic mutual impedance, in simple closed forms, explicitly in terms of the dipoles' length (L), the number (M) of dipoles comprising the array, and the circular array grid's radius (R). This simple model is obtained via a "behavioral" (a.k.a. "phenomeno-logical" or "block-box") approach, which is new to UCA inter-antenna mu-tual coupling modeling. This "phenomenological" or "behavioral" approach takes mutual impedance data, (generated by Method-of Moments (MoM) electromagnetic simulations) to fit into a low-dimensional manifold. Such an approach is commonplace in modeling wireless fading channels and the nonlinear amplifier's input/output relationship, though admittedly can be used to mutual coupling modeling. Despite the conceptual simplicity of this approach, subsequently presented results will demonstrate its success to yield simple rule-of-thumb relationships of how the mutual impedance varies with the wavelength-normalized dipole length (L/λ), the number M of such dipoles in the circular array, and the circle's radius (R/λ).||en_US|
|dcterms.extent||xviii, 153 pages : color illustrations||en_US|
|dcterms.isPartOf||PolyU Electronic Theses||en_US|
|dcterms.LCSH||Hong Kong Polytechnic University -- Dissertations||en_US|
Files in This Item:
|991022289504703411.pdf||For All Users||1.65 MB||Adobe PDF||View/Open|
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item: