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
High speed LVDS digital input/output interface circuitries for high resolution imaging sensors /
Download
index.pdf
Date
2015
Author
Soyer, Suhip Tuncer
Metadata
Show full item record
Item Usage Stats
267
views
155
downloads
Cite This
In communication systems like WiMAX, WLAN, 3G, 4G and LTE, design of wideband and dual polarized antennas are required. It is known that bandwidth of patch antennas can be broaden by using thick air substrates. The bandwidth can be further improved by using three dimensional feed strucutures that are electromagnetically coupled to the patch. In this thesis, microstrip patch antennas that are excited by elevated wide strips are studied. First, a linearly polarized antenna is considered and the effects of antenna and feed parameters on the input impedance characteristics are investigated through EM simulations. Then a dual polarized antenna is considered and the effects of antenna parameters on the radiation performance (i.e. isolation) is explored. In the light of these observations, guidelines for the design of dual polarized wideband patch antennas excited with elevated wide strips is presented. To demonstrate the usage of these guidelines an antenna, which operates in a different frequency band, is designed by following the steps of the proposed design procedure. Finally, the input impedance and radiation pattern measurements of a two element antenna array that was previously designed as a base station antenna are performed. Simulation and measurement results are compared and discussed. The EM simulations are performed by a Finite Element based full-wave analysis software HFSS by Ansys.
Subject Keywords
Image processing.
,
Image analysis.
,
Imaging systems.
,
High resolution imaging.
,
Low voltage integrated circuits.
URI
http://etd.lib.metu.edu.tr/upload/12618525/index.pdf
https://hdl.handle.net/11511/24450
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Analysis and design of dual-polarized wideband patch antennas electromagnetically excited with elevated wide strips /
Yılmaz, Adil Fırat; Alatan, Lale; Department of Electrical and Electronics Engineering (2015)
In communication systems like WiMAX, WLAN, 3G, 4G and LTE, design of wideband and dual polarized antennas are required. It is known that bandwidth of patch antennas can be broaden by using thick air substrates. The bandwidth can be further improved by using three dimensional feed strucutures that are electromagnetically coupled to the patch. In this thesis, microstrip patch antennas that are excited by elevated wide strips are studied. First, a linearly polarized antenna is considered and the effects of ant...
Modelling and analysis of vertical handover in highly mobile environments
Kirsal, Yonal; Ever, Enver; Koçyiğit, Altan; Gemikonakli, Orhan; Mapp, Glenford (2015-12-01)
Various types of wireless networks have been developed and deployed including 3G, WLAN, WiMAX, LTE and LTE Advanced. User connectivity and network performance can be improved using vertical handover techniques which involve switching between available networks in heterogeneous environments. In this respect, recently there has been an increased interest in the integration of cellular and WLAN systems. In this study, the integrated heterogeneous wireless systems are modelled using two-stage open queuing syste...
A turbo detection scheme for EGPRS
Başköy (Gülmez), Ülkü; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2003)
Enhanced Data Rates for Global Evolution (EDGE) is one of the 3G wireless communication standards, which provides higher data rates by adopting 8-PSK modulation in TDMA system infrastructure of GSM. In this thesis, a turbo detection receiver for Enhanced General Packet Radio Services (EGPRS) system, which is the packet switching mode of EDGE, is studied. In turbo detection, equalization and channel decoding are performed iteratively. Due to 8-ary alphabet of EGPRS modulation, full state trellis based equali...
High data rate X-band transmitter for low Earth orbit satellites
Sunay, Hacer K.; Ismailoglu, Neslin; Kirilmaz, Tunahan; Dudak, Celal; Sen, Ozlem A. (2007-04-26)
Main purpose of this study is to design a transmitter with data rates up to 100 Mbps, having QPSK/OQPSK modulation and 7 W (38.5 dBm) output power at 8.2 GHz. This output power satisfies the link budget for a low earth orbit (LEO) satellite at 700 km, utilizing required source-channel coding schemes in baseband for a BER performance of 10(-6). The modulation scheme of the transmitter can be selected as BPSK, QPSK or OQPSK. In addition to QPSK/OQPSK modulation scheme choice, the transmitter will have three d...
Base station power optimization for green networks using reinforcement learning
Aktaş, Semih; Alemdar, Hande; Department of Computer Engineering (2019)
The next generation mobile networks have to provide high data rates, extremely low latency, and support high connection density. To meet these requirements, the number of base stations will have to increase and this increase will lead to an energy consumption issue. Therefore ``green'' approaches to the network operation will gain importance. Reducing the energy consumption of base stations is essential for going green and also it helps service providers to reduce operational expenses. However, achieving en...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
S. T. Soyer, “High speed LVDS digital input/output interface circuitries for high resolution imaging sensors /,” M.S. - Master of Science, Middle East Technical University, 2015.
