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Mechanical Antenna Simulations via F...

Rivera, Jesse.

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Mechanical Antenna Simulations via Finite Difference Time Domain Methods.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Mechanical Antenna Simulations via Finite Difference Time Domain Methods./
Author:	Rivera, Jesse.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
Description:	363 p.
Notes:	Source: Dissertations Abstracts International, Volume: 85-09, Section: B.
Contained By:	Dissertations Abstracts International85-09B.
Subject:	Aerospace engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31139588
ISBN:	9798381953213

Mechanical Antenna Simulations via Finite Difference Time Domain Methods.
Rivera, Jesse.

Mechanical Antenna Simulations via Finite Difference Time Domain Methods. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 363 p.

Source: Dissertations Abstracts International, Volume: 85-09, Section: B.

Thesis (Ph.D.)--University of California, Los Angeles, 2024.

Barriers that have separated different domains of physics and isolated engineers within the silos of their own expertise have been continually eroding in recent decades. Potential exotic devices of the future continue to be actualized through designs which are optimized by evoking multiple engineering disciplines. One such family of novel devices are electrically small multiferroic mechanical resonance-based antennas, which couple acoustic and electromagnetic phenomenon, allowing for sizes which are roughly five orders of magnitude smaller than conventional antennas. As such, the ability to understand these tiny and more efficient antennas through the development of a numerical algorithm benefits a wide array of industries by allowing engineers to optimize designs without undue prototyping. For example, such a numerical algorithm would allow smaller conformal antennas on the outer skin of aircraft to be designed faster, as well as small minimally invasive implantable biomedical antennas which may serve a myriad of functions to improve patient quality of life.The first chapter of this work provides a history of antennas, highlighting limitations to motivate interest in pursuing mechanical resonance-based radiators. Background information on the operating principle of these antennas and a literature survey follows. The second and third chapters then formulate the numerical model by presenting the continuum form of all requisite equations in the former chapter and then discretizing these expressions in the latter chapter. The finite difference time domain method is leveraged for discretization and all relevant numerical artifacts such as boundary conditions, interface conditions, and excitations are derived. The algorithm is then validated versus analytical solutions in the fourth chapter of this work to champion the reliability of the proposed numerical framework. The dissertation capstone is the fifth chapter which utilizes the code to conduct simulations on novel devices, demonstrating a large boost in performance with respect to the state of the art. This dissertation also features guidelines for prospective modelers based on lessons learned from the author during the model formulation process. Device simulations from chapter 5 also provide engineers with useful counsel on future piezoelectric antenna array designs. This work presents a comprehensive procedural guide for the full-wave simulation of mechanical resonance-based antennas, effectively bridging a gap in the existing literature which deals almost exclusively in lower fidelity equivalent circuit models.

ISBN: 9798381953213Subjects--Topical Terms:

1002622
Aerospace engineering.
Subjects--Index Terms:

Antenna

Mechanical Antenna Simulations via Finite Difference Time Domain Methods.
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020 $a 9798381953213
035 $a (MiAaPQ)AAI31139588
035 $a AAI31139588
040 $a MiAaPQ $c MiAaPQ
100 1 $a Rivera, Jesse. $3 3769580
245 1 0 $a Mechanical Antenna Simulations via Finite Difference Time Domain Methods.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 363 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-09, Section: B.
500 $a Advisor: Carman, Gregory P.;Wang, Yuanxun.
502 $a Thesis (Ph.D.)--University of California, Los Angeles, 2024.
520 $a Barriers that have separated different domains of physics and isolated engineers within the silos of their own expertise have been continually eroding in recent decades. Potential exotic devices of the future continue to be actualized through designs which are optimized by evoking multiple engineering disciplines. One such family of novel devices are electrically small multiferroic mechanical resonance-based antennas, which couple acoustic and electromagnetic phenomenon, allowing for sizes which are roughly five orders of magnitude smaller than conventional antennas. As such, the ability to understand these tiny and more efficient antennas through the development of a numerical algorithm benefits a wide array of industries by allowing engineers to optimize designs without undue prototyping. For example, such a numerical algorithm would allow smaller conformal antennas on the outer skin of aircraft to be designed faster, as well as small minimally invasive implantable biomedical antennas which may serve a myriad of functions to improve patient quality of life.The first chapter of this work provides a history of antennas, highlighting limitations to motivate interest in pursuing mechanical resonance-based radiators. Background information on the operating principle of these antennas and a literature survey follows. The second and third chapters then formulate the numerical model by presenting the continuum form of all requisite equations in the former chapter and then discretizing these expressions in the latter chapter. The finite difference time domain method is leveraged for discretization and all relevant numerical artifacts such as boundary conditions, interface conditions, and excitations are derived. The algorithm is then validated versus analytical solutions in the fourth chapter of this work to champion the reliability of the proposed numerical framework. The dissertation capstone is the fifth chapter which utilizes the code to conduct simulations on novel devices, demonstrating a large boost in performance with respect to the state of the art. This dissertation also features guidelines for prospective modelers based on lessons learned from the author during the model formulation process. Device simulations from chapter 5 also provide engineers with useful counsel on future piezoelectric antenna array designs. This work presents a comprehensive procedural guide for the full-wave simulation of mechanical resonance-based antennas, effectively bridging a gap in the existing literature which deals almost exclusively in lower fidelity equivalent circuit models.
590 $a School code: 0031.
650 4 $a Aerospace engineering. $3 1002622
650 4 $a Electrical engineering. $3 649834
650 4 $a Electromagnetics. $3 3173223
653 $a Antenna
653 $a Electrodynamics
653 $a Finite difference time domain
653 $a Piezoelectric antenna
653 $a Biomedical antennas
690 $a 0538
690 $a 0544
690 $a 0607
710 2 $a University of California, Los Angeles. $b Aerospace Engineering 0279. $3 2092189
773 0 $t Dissertations Abstracts International $g 85-09B.
790 $a 0031
791 $a Ph.D.
792 $a 2024
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31139588