Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"microstrip patch antenna"”.
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Design of microstrip patch antenna for the NPSAT1
… presents the design of two circularly polarized patch antennas for operation at 1.767 GHz and at 2.207 GHz (for receiving and transmitting, respectively) on NPSAT1 satellite. The design requirements for the antennas include a VSWR of less than or equal to 2:1 for 50 omega reference impedance. The …
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Performance of defected ground structure for rectangular microstrip patch antenna
… of transmitted or received signal. Rectangular microstrip patch antenna (RMPA) is designed in order to obtain the required parameter responses at 2 GHz. The proposed antenna is excited through the microstrip feed line which is connected directly to the patch antenna. RMPA of length 35.8462 mm …
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Improving port isolation in dual-polarized microstrip patch antenna arrays
… the port isolation degradation in dual-polarized microstrip arrays. The advantages of using dual-polarized antennas are the frequency band reuse and simultaneous receive/transmit capability. To fully exploit these advantages the isolation between orthogonally polarized ports must be maximized and …
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Reconfigurable Wideband Circularly Polarized Microstrip Patch Antenna for Wireless Applications
<p>In this thesis, developments of rectangular microstrip patch antenna to have circular polarization agility with wideband performance, for wireless applications are presented. First, a new technique to achieve circularly polarized (CP) probe feed single-layer microstrip patch antenna with …
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A frequency reconfigurable circularly polarized microstrip patch antenna using liquid metal microswitches
Reconfigurable antennas with adaptable frequency, pattern, and polarization offer flexibility and size reduction for wireless systems that must increasingly execute multiple missions with less volume. These antennas will also complement anticipated cognitive radio systems, which promise more …
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Design, Simulation and Analysis of A Low Radar Cross Section Uhf Circular Microstrip Patch Antenna and Radome For United States Naval Fleet Broadcast Applications
… that's the topside radiators, also known as her antennas. One of the dominant scatters of large RCS ships are her topside mounted antennas.</p> <p>The intended result of this research effort was to develop a design for a low RCS replacement for the existing AN/SSR-1A antenna, designated as the …
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Analysis of three different dielectric substrates on square ring microstrip antenna for wireless application
… modern integrated circuit technology. However, microstrip antenna suffers from low bandwidth. The objective of this project was to improve the bandwidth by proposing square ring technique and investigation for the enhancement strategy of bandwidth performance and analysis of different …
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Design and Analysis of An Active Integrated Antenna
<p>In this thesis, an active integrated antenna (AIA) system is proposed for potential applications in an RF receiver front end for mobile and wireless communication devices. The AIA system consists of a microstrip patch antenna and a low noise amplifier (LNA), which are integrated together with a …
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Ultra-wideband miniaturized microstrip patch antennas for wireless communications: design guidelines and modeling
… than what is normally utilized with traditional antenna techniques. The interest for compact consumer electronics is growing in the meantime, creating a demand on efficient and low profile antennas which can be integrated on a printed circuit board. The main objective of this thesis is to study, …
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Rectangular microstrip radiator for a multielement local hyperthermia applicator
… facilitate the design of thin, conformable, microstrip patch antenna arrays. Such multielement microwave antenna arrays can be advantageous for controlled heating of superficial malignancies during cancer therapy. This thesis reports a theoretical analysis and design verification of the …
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Study of Optical OFDM System for Wireless LAN Applications
… as optical laser sources. Identical rectangular microstrip patch antennas have been used at the transmitter and the receiver as well. The simulations were carried out for different SMF and MMF lengths, and the variable wireless distance between the transmitting and receiving antennas was in a …
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Design of fractal minkowski diversity antenna for LTE and WIFI application
… project, the Minkowski fractal Array Diversity antenna is introduced. Fractal geometry allows us to design a miniature antenna and integrate multiple telecommunication services into single device. One of the most relevant trends for wireless devices is miniaturization. The purpose of this …
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Higher-order Petrov-Galerkin methods for analysis of antennas
… method is applied to the analysis of several antenna configurations. The method obtains numerical solutions of Maxwell's equations in the time domain using implicit time stepping and introduces energy into the domain using a Gaussian pulse to allow frequency-domain parameters to be computed …
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Conformal Microstrip GPS Antenna for Missile Application
… flight, GPS signal reception using traditional antennas may be intermittent. To remain cost competitive, Stellar Exploration Inc. is developing a low-cost omnidirectional GPS antenna for guided missile prototypes.</p> <p> In this thesis, existing products and design techniques are examined, …
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Numerically efficient analysis of microstrip configurations using closed-form Green's functions
A general class of microstrip structures is investigated in this work by using a spatial domain Green's function. The derivation of the closed-form spatial domain Green's functions for the vector and scalar potentials is presented for a microstrip geometry with a substrate and superstrate for which …
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Technique for the design of matched antennas using method of moment-based greedy best-first search
… design constraints are approaching the limits of antenna performance and feature integration. Complex multi-band antennas that must satisfy stringent volumetric constraints are pushing the use of optimization tools to the top of the antenna designer's toolbox. Beyond parametric studies, global …
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Design rectenna for wireless energy harvesting
… which is a combination of a rectifier and an antenna, is a device to harvest wireless energy in the air. This thesis is concentrated on the analysis, design and measurement of compact rectennas for Wi-Fi (RF) wireless energy harvesting applications. The objectives of this project is to study …
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Analysis of Aperture Radiation Using Computer Visualization and Image-Processing Techniques
… order to accurately describe the behavior of an antenna, one needs to understand the radiation mechanisms that govern its operation. One way to gain such an insight is to view the fields and currents present on a radiating structure. Unfortunately, in close proximity to an antenna empirical …
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Glass Based Packaging for Beyond 5G Communication
… the superior performance of the first D-band PA-antenna module using advanced die-embedded glass substrate. This work addresses the challenges of antenna integration, interconnect loss, and thermal management. The innovative packaging solution leverages the advantages of glass substrates, …
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Implantable ferrite antenna for biomedical applications
We have developed an implantable microstrip patch antenna with dimensions of 10×10×1.28 mm, operating around the Industrial, Scientific and Medical (ISM) band (2.4 – 2.5 GHz). The antenna is characterized in skin-mimicking gels and compared with simulation results. The experimental measurements are …
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