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Dissertations / Theses on the topic 'Aperture-coupled microstrip antenna'

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Published: 4 June 2021
Last updated: 25 July 2025

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1

Civerolo, Michael Paul. "Aperture Coupled Microstrip Antenna Design and Analysis." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/300.

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A linearly-polarized aperture coupled patch antenna design is characterized and optimized using HFSS antenna simulation software. This thesis focuses on the aperture coupled patch antenna due to the lack of fabrication and tuning documentation for the design of this antenna and its usefulness in arrays and orthogonally polarized communications. The goal of this thesis is to explore dimension effects on aperture coupled antenna performance, to develop a design and tuning procedure, and to describe performance effects through electromagnetic principles. Antenna parameters examined in this study
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2

Zivanovic, Bojana. "Series-Fed Aperture-Coupled Microstrip Antennas and Arrays." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4425.

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The focus of this dissertation is on the development and circuit modeling of planar series-fed, linear- and circular-polarized microstrip aperture-coupled antennas and N-element arrays operating in C-band. These arrays were designed to be used as part of airborne or land-based frequency-hopped communication systems. One of the main objectives of this work was to maintain a constant beam angle over the frequency band of operation. In order to achieve constant beam pointing versus frequency, an anti-symmetric series-fed approach using lumped-element circuit models was developed. This series feed
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3

Iseri, Kadir. "Analysis Of Dual-polarized Aperture-coupled Microstrip Antennas With H-shaped Slots And Equivalent Circuit Modeling Of H-shaped Slots." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614527/index.pdf.

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This thesis includes the design, production and measurement of a wideband dualpolarized X-band aperture-coupled microstrip patch antenna. The wideband and dual-polarized operation is achieved through the use of H-shaped coupling slots. Therefore, the equivalent circuit modeling of a microstrip line fed H-shaped slot is also studied in this thesis. A step-by-step procedure is followed during the design process of the dual-polarized aperture-coupled microstrip antenna. First, an aperture-coupled microstrip antenna with a single rectangular slot, that exhibits a wideband characteristic for single
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4

Okuducu, Yusuf. "Dual Band Microstrip Patch Antenna Structures." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606859/index.pdf.

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Wideband and dual band stacked microstrip patch antennas are investigated for the new wideband and dual band applications in the area of telecommunications. In this thesis, aperture-coupled stacked patch antennas are used to increase the bandwidth of the microstrip patch antenna. By this technique, antennas with 51% bandwidth at 6.1 GHz and 43% bandwidth at 8 GHz satisfying S11&lt<br>-15 dB are designed, manufactured and measured. A dual-band aperture coupled stacked microstrip patch antenna operating at 1.8 GHz with 3.8% bandwidth and at 2.4 GHz with 1.6% bandwidth is designed, produced and m
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5

Liu, Lei. "Investigation of aperture coupled microstrip antenna to obtain a high efficient active integrated antenna by using Class F and Inverse Class F power amplifiers." Thesis, Northumbria University, 2013. http://nrl.northumbria.ac.uk/21425/.

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In wireless communications and radar systems, there are requirements for high efficiency, small size, low cost, and wide bandwidth of transmitter front –end usage for commercial and also military applications. Active integrated antenna (AIA) could satisfy almost all the requirements. The overall objective of the proposed research is to model, optimise, and design a compact and high efficient AIA using an aperture coupled microstrip antenna (ACMA) by integrating with a power amplifier (PA). Research on ACMA has been focused on the transmissions line (TL) model (TLM) and full wave electromagneti
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6

Jacmenovic, Dennis, and dennis_jacman@yahoo com au. "Optimisation of Active Microstrip Patch Antennas." RMIT University. Electrical and Computer Engineering, 2004. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20060307.144507.

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This thesis presents a study of impedance optimisation of active microstrip patch antennas to multiple frequency points. A single layered aperture coupled microstrip patch antenna has been optimised to match the source reflection coefficient of a transistor in designing an active antenna. The active aperture coupled microstrip patch antenna was optimised to satisfy Global Positioning System (GPS) frequency specifications. A rudimentary aperture coupled microstrip patch antenna consists of a rectangular antenna element etched on the top surface of two dielectric substrates. The substrates
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7

Kacar, Merve. "Direct Digital Manufacturing of Multi-layer Wideband Ku-band Patch Antennas." Scholar Commons, 2017. https://scholarcommons.usf.edu/etd/7411.

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Design and performance of fully-printed Ku-band aperture coupled patch antennas fabricated by a direct digital manufacturing (DDM) approach that integrates fused deposition modeling (FDM) of acrylonitrile butadiene styrene (ABS) thermoplastic with in-situ micro-dispensing of conductive silver paste (CB028) are reported. Microstrip line characterizations are performed and demonstrate that misalignment of ABS substrate deposition direction with microstrip line micro-dispensing direction can degrade the effective conductivity up to 60% within the Ku-band, and must be taken int
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8

Goksu, Mesut. "Analysis Of Slot Coupled Patch Antennas Using Closed Form Green." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610996/index.pdf.

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In this thesis, an analysis technique for the slot coupled patch antennas using MoM in conjunction with the closed form Green&rsquo<br>s functions is presented. Slot coupled patch antennas are fed by a microstrip open stub which is coupled to the patch through an electrically small slot. Current distributions over the microstrip line, slot line and the patch are represented by rooftop basis functions. First, a relatively simple structure, microstrip coupled slot line is investigated using the proposed technique. Then the method is extended to the slot coupled patch antenna geometry. By using t
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9

GAO, YI-TAO, and 高易韜. "Series-fed aperture-coupled microstrip antenna array." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/89241900093145098936.

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10

Lin, Chung-Chu, and 林忠助. "Design of Micromachined Wideband Aperture Coupled Microstrip Patch Antenna." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02144213947617591218.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>89<br>In this thesis, the characteristics of wide band aperture coupled microstrip patch antennas (MPAs) is studied. First, we conduct the basic theoretical analysis of the aperture coupled MPA. We use the full-wave numerical analysis method that has higher accuracy to understand the whole process of analysis. The purpose is to build up foundation of theoretical analysis for wide band aperture coupled MPA. Then, we design a series of the S-band aperture coupled MPA. The cheaper and more available FR4 PCB substrate is used to layout the element of antenna
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11

Reddy, S. P. "A Reconfigurable Aperture Coupled Microstrip Patch Antenna with Beam Steering Capability on Silicon." Thesis, 2012. http://raiith.iith.ac.in/704/1/EE10M10.pdf.

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First reconfigurable antenna came into existence in early 1980s. Reconfigurable antennas provide various functions in operating frequency, polarization & radiation patterns since it can be used to avoid noise sources, improve system gain & security [1]. Reconfiguring the Frequency is the major issue & lot of recent work has been done on frequency reconfigurability A Barium Strontium Titanate (BST) based reconfigurable Aperture-coupled patch antenna on high resistivity silicon substrates with beam steering capability using PIN doides has been proposed in this paper. For low dielectric co
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12

Kim, David G. "Design of Stripline-Fed Dual Polarization Aperture-Coupled Stacked Microstrip Patch Phased Array Antenna for Wideband Application." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8567.

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Recent days, antennas play an important role in wireless communication system. Microstrip patch antennas are well known to have positive features for cost-effective, low profile and broadband. This type of antenna can be used in wide range of applications such as in wireless communications, radar systems, and satellites. Inhibiting characteristics of single patch antenna with low gain and narrow band leads to the research area to have array configuration. Beam steering antennas are the ideal solution for various systems such as traffic control and collision avoidance radar systems. The goal of
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13

Chen, Rui-Hung, and 陳叡宏. "Aperture-coupled Microstrip Antennas." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/16893397530408364206.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>95<br>This thesis presents the designs of an aperture-coupled microstrip antenna with switchable polarization. Two orthogonal modes of the microstrip antenna can be excited by a series microstrip-line-feed configuration through the coupling of a ring slot in the ground plane. For the ring-slot-coupled microstrip antenna, the antenna can radiate linear (LP) or circular polarization (CP) with good performances by selecting a proper length of the open stub in the feed line. In addition, the LP radiation also can be excited through the coupling of an open-ring slot inst
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14

Chang, Sung-Hsien, and 張嵩賢. "Wide-Band Aperture-Coupled Microstrip Antennas." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/55325333498767240667.

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碩士<br>國立交通大學<br>電信研究所<br>82<br>This thesis presents two approaches to increase the antenna's bandwidth of conventional aperture coupled microstrip antenna structure. One is coplanar patches with one aperture coupled to microstrip line, the other is series-fed patches with apertures coupled to microstrip line. Both configurations are analyzed using an integral equation technique solved in spectral domain with the Galerkin method of moments. New numerically efficient methods are applied to ex
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15

Herscovici, Naftali I. "Analysis of aperture coupled microstrip transmission lines and antennas." 1992. https://scholarworks.umass.edu/dissertations/AAI9305839.

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The main subject of this work is the modular design of multilayer printed arrays. The need for a multilayer feeding network is evident in large arrays with a large number of power dividers or phase shifters. Due to space considerations the spurious coupling between the network and the radiating elements, or between different parts of the network itself, can be significant enough to degrade performance. In addition, corporate feed network radiation can affect the sidelobe and cross-polarization characteristics of the array. The use of a multilayer feed network located in a different plane than
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16

Chang, Chun-Chuan, and 張鈞全. "A Design of Aperture-Coupled Microstrip Antennas with Low Cross-Polarization." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/39298894366760812886.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>96<br>The thesis first presents the performances of microstrip patch antennas excited by the aperture-coupling feed that is composed of a T-shaped microstrip feed line and an annular-ring slot. Because the annular-ring slot is designed at a full-wavelength resonant mode, a broad impedance bandwidth can be obtained by combing the resonant modes of the coupling slot and radiating patch; moreover, a low cross polarization is also observed, especially around the direction with maximum gain. Several prototypes of the proposed aperture-coupled microstrip antennas with dif
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17

Lin, Dah-Yah, and 林大業. "The design of dual-polarization aperture coupled microstrip antennas and the mircowave switch." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/57907036162996911636.

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碩士<br>國立中央大學<br>通訊工程研究所<br>93<br>In the thesis, two types of designs of dual-polarized aperture-coupled microstrip antennas are proposed. In the first design, the bandwidth (for VSWR<2) is increased to at least 2 times of single patch antenna, while the isolation between two ports for different polarization remain the same. In the second design, the performance of both bandwidth and isolation are improved. The thesis also discusses the design theorem and set up the design flow graph of antenna. Finally a single-pole single-throw (SPST) switch is developed for dual-polarized system.
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