Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Analysis and design of active annular ring coupled circular patch antenna
Download
index.pdf
Date
2017
Author
Gebeşoğlu, Durmuş
Metadata
Show full item record
Item Usage Stats
314
views
129
downloads
Cite This
This thesis includes the design, production and measurement of the active, dual band annular ring coupled circular patch antenna. The dual band operation is achieved by using stacked patches. 3 dB hybrid is used to obtain circular polarization. Effects of antenna parameters on the input impedance and frequency ratio between the resonance frequencies are observed. Design has been achieved step by step. Firstly, dual band operation is investigated by using stacked patches. An annular ring antenna and a circular patch antenna are stacked to achieve dual band characteristic. Parametric analyzes are done in electromagnetic solver tool HFSS ®. The final antenna structure is revealed with parametric analyzes. After that, it is focused on to obtain circular polarization. 3 dB hybrid is designed in HFSS ®. The designed hybrid and antenna are combined. Circular polarization is realized by using 3 dB hybrid. At last, an attention is given to make the antenna active. Active circuit of the antenna is created in AWR Design Environment ®. The designed active dual band annular ring coupled circular patch antenna is manufactured and measured. The results of simulations and measurements are compared. Good agreements are observed between simulated and measured results.
Subject Keywords
Antennas (Electronics).
,
Aperture antennas.
,
Microstrip antennas.
,
Global Positioning System.
URI
http://etd.lib.metu.edu.tr/upload/12620927/index.pdf
https://hdl.handle.net/11511/26413
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Analysis of dual - polarized aperture - coupled microstrip antennas with H-shaped slots and equivalent circuit modeling of H shaped slots
İşeri, Kadir; Alatan, Lale; Department of Electrical and Electronics Engineering (2012)
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 an...
Analysis and design of reactively loaded dual band microstrip antenna
Bayram, Caner; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2015)
This thesis includes the design, production and measurement of a reactively loaded microstrip patch antenna. The dual band and circular polarization operation are achieved through the use of narrow slots etched close to the radiating edges on a nearly square patch. During the design process, the effects of antenna parameters on the input impedance and axial ratio characteristics are investigated. A step-by-step procedure is followed during the design process. First, the dual band characteristic is investiga...
Development of multiband microstrip antennas for GPS applications
Önder, Mustafa Caner; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2019)
In this thesis study, the design, fabrication and measurements of dualband and triband circularly polarized microstrip antennas for GPS applications are presented. Characteristic mode analysis technique is applied to get an insight into circularly polarized patch antennas. A design flow is presented for a circularly polarized L1 GPS band microstrip antenna by using characteristic mode analysis. A single fed L1/L2 GPS band right hand circularly polarized four-slotted patch antenna is designed by using reacti...
Phased array antenna calibration and experimental validation
Yalım, Alper; Demir, Şimşek; Department of Electrical and Electronics Engineering (2013)
In this thesis, nine different methods aiming calibration of Phased Array Antenna (PAA) and Multifunctional Radars which employ PAA are presented. Those calibration methods are described, procedures of the methods are explained in detail, and information about constraints and measurement restrictions of those methods is given. As one step further, comprehensive work is focused on Multi-Element Phase Toggling (MEP) method and Rotating Element Vector (REV) method. Results of simulations are shown, theoretical...
Dual polarized slotted waveguide array antenna
Doğan, Doğanay; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2011)
An X band dual polarized slotted waveguide antenna array is designed with very high polarization purity for both horizontal and vertical polarizations. Horizontally polarized radiators are designed using a novel non-inclined edge wall slots whereas the vertically polarized slots are implemented using broad wall slots opened on baffled single ridge rectangular waveguides. Electromagnetic model based on an infinite array unit cell approach is introduced to characterize the slots used in the array. 20 by 10 el...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
D. Gebeşoğlu, “Analysis and design of active annular ring coupled circular patch antenna,” M.S. - Master of Science, Middle East Technical University, 2017.