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Dissertations / Theses on the topic 'WiMAX applications'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 June 2025

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1

Costa, André Amaral. "Assessing WiMAX for vehicular communications applications." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/1952.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Os acidentes rodoviários têm um enorme impacto na sociedade, quer devido às perdas humanas daí resultantes quer devido aos custos económicos a si associados. Por todo o mundo, esta situação levou ao estudo de mecanismos que permitem aumentar a segurança nas estradas. Por exemplo, na Europa estão a ser financiados vários projectos para desenvolver estes mecanismos e a maior parte das iniciativas em curso requerem a possibilidade dos veículos comunicarem entre si e/ou com estações que se encontram fixas junto à estrada. Devido aos requisit

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Almohaimeed, Abdullah Mohammed H. "Down-Converter Gilbert-Cell Mixer for WiMax Applications using 0.15μm GaAs HEMT Technology". Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30375.

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The Worldwide Interoperability for Microwave Access, or WiMax, is a wireless communication technique based on IEEE 802.16 standards. Its advantage of sending high data rates over long distances, while using a single base station to cover a large area, has made this technique a flexible and reliable solution for public wireless networks. WiMax has two main types of networks: Fixed and Mobile. The most popular transceiver used in WiMax applications is the “Direct-Conversion Architecture” due to its high level of integration and less component requirements, which leads to reduced power dissipa

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3

Piao, Haiyan, Yunnan Jin, Jinpil Tak, and Jaehoon Choi. "Compact Mobile Quad-Band Slot Antenna Design for GPS L1, WiMAX, and WLAN Applications." KOREAN INST ELECTROMAGNETIC ENGINEERING & SCIENCE, 2017. http://hdl.handle.net/10150/626102.

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In this paper, an asymmetric compact multiband slot antenna is proposed for global positioning system (GPS), worldwide interoperability for microwave access (WiMAX), and wireless area network (WLAN) applications. The top plane, a ground is composed of a rectangular slot with a trapezoidal-like stub, an inverted U-shaped slot at the right side of the rectangular slot, an inverted L-shaped slot at the left side of the rectangular slot, and three stubs. The proposed antenna is fed by an asymmetric cross-parasitic strip on the bottom plane. By properly designing the slots and stubs, four resonant

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4

Peart, Amanda. "Optimising quality of service levels through experimentation on streaming multimedia applications using WiMAX." Thesis, University of Portsmouth, 2014. https://researchportal.port.ac.uk/portal/en/theses/optimising-quality-of-service-levels-through-experimentation-on-streaming-multimedia-applications-using-wimax(48279433-5762-4da2-b6d2-acbd09dbfda7).html.

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This work investigates the optimisation of Quality of Service (QoS) levels through experimentation on streaming multimedia applications with WiMAX. This work initially tests two algorithms, the intelligent Adaptive Buffer Control (iABC) and the Bandwidth Fluctuation Location Based Dynamic Transmission Rate Control before bring these together in the Resource Harvest and Redistribution - Call Admission Control (RHR-CAC) algorithm. The iABC algorithm augments ATM QoS categories within the wireless domain. iABC utilizes an intelligent adaptive buffering system for the existing users to redistribut

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Yurduseven, Okan. "Integration of microwave antennas with solar PV for multiband and wideband mobile, WLAN and WiMAX applications." Thesis, Northumbria University, 2014. http://nrl.northumbria.ac.uk/17466/.

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The primary goal of this research is to investigate the existing photovoltaic antenna integration techniques and develop a new solar antenna integration topology in order to address the drawbacks of these techniques. With the increasing demands for low-profile antennas and a growing move towards the microgeneration of electricity, primarily by photovoltaics, photovoltaic antennas are of increasing importance with a growing amount of research in this area being developed. At present there are a number of designs for photovoltaic antennas which could be divided into two distinct categories. The

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Hussaini, Abubakar Sadiq. "Energy efficient radio frequency system design for mobile WiMax applications : modelling, optimisation and measurement of radio frequency power amplifier covering WiMax bandwidth based on the combination of class AB, class B, and C operations." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5749.

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In today's digital world, information and communication technology accounts for 3% and 2% of the global power consumption and CO2 emissions respectively. This alarming figure is on an upward trend, as future telecommunications systems and handsets will become even more power hungry since new services with higher bandwidth requirements emerge as part of the so called 'future internet' paradigm. In addition, the mobile handset industry is tightly coupled to the consumer need for more sophisticated handsets with greater battery lifetime. If we cannot make any significant step to reducing the ener

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Hussaini, Abubakar S. "Energy efficient radio frequency system design for mobile WiMax applications. Modelling, optimisation and measurement of radio frequency power amplifier covering WiMax bandwidth based on the combination of class AB, class B, and C operations." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5749.

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In today´s digital world, information and communication technology accounts for 3% and 2% of the global power consumption and CO2 emissions respectively. This alarming figure is on an upward trend, as future telecommunications systems and handsets will become even more power hungry since new services with higher bandwidth requirements emerge as part of the so called ¿future internet¿ paradigm. In addition, the mobile handset industry is tightly coupled to the consumer need for more sophisticated handsets with greater battery lifetime.

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Jalali, Farahani Bahar. "Adaptive digital calibration techniques for high speed, high resolution SIGMA DELTA ADCs for broadband wireless applications." Columbus, Ohio : Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1133192371.

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9

Nivor, Frédéric. "Architecture de Communication pour les Applications Multimédia Interactives dans les Réseaux Sans Fil." Phd thesis, Université Paul Sabatier - Toulouse III, 2009. http://tel.archives-ouvertes.fr/tel-01067146.

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Les travaux de cette thèse s'inscrivent dans le contexte des réseaux sans fil et des réseaux d'accès par Satellite en particulier, qui facilitent l'installation d'infrastructures réseau dans les zones géographiquement reculées et faiblement peuplées. Cependant, ces derniers présentent certains inconvénients lorsqu'il s'agit de déployer des applications multimédia interactives. En effet, de telles applications requièrent un délai de bout en bout aussi faible que possible et plus généralement exigent une meilleure Qualité de Service (QdS) du système de communication que le classique Meilleur-Eff

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10

Altunyurt, Nevin. "Integration and miniaturization of antennas for system-on-package applications." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33903.

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Wireless communications have been an indispensable aspect of everyday life, and there is an increasing consumer demand for accessing several wireless communication technologies from a single, compact, mobile device. System-on-package (SOP) technology is an advanced packaging technology that has been proven to realize the convergence of multiple functions into miniaturized, high-performance systems to meet this demand. With the advancements in the SOP technology, the miniaturization of the front-end module has been achieved using embedded passives in multilayer packages. However, the integratio

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11

Engström, Martin. "Webbaserad visning av positioner på karta." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58029.

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Today there are a big need for a system that delivers overview of all available units for different municipalities and shipping- and security companies due to the increasing requirements for efficiency. The purpose with this graduation thesis is to find out which systems that is suitable to use while developing cost-effective software for positioning and to produce a prototype for such solution. This assignment has been done at the request of PocketMobile Communications AB. PocketMobile is a company that are specialized on delivering modern mobile software solutions and systems to comp

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Salah, Adham M. S. "Investigation of Integrated Decoupling Methods for MIMO Antenna Systems. Design, Modelling and Implementation of MIMO Antenna Systems for Different Spectrum Applications with High Port-to-Port Isolation Using Different Decoupling Techniques." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/18427.

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Multiple-Input-Multiple-Output (MIMO) antenna technology refers to an antenna with multiple radiators at both transmitter and receiver ends. It is designed to increase the data rate in wireless communication systems by achieving multiple channels occupying the same bandwidth in a multipath environment. The main drawback associated with this technology is the coupling between the radiating elements. A MIMO antenna system merely acts as an antenna array if the coupling between the radiating elements is high. For this reason, strong decoupling between the radiating elements should be

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Lubobya, Smart Charles. "Performance analysis and application development of hybrid WiMAX-WiFi IP video surveillance systems." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25326.

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Traditional Closed Circuit Television (CCTV) analogue cameras installed in buildings and other areas of security interest necessitates the use of cable lines. However, analogue systems are limited by distance; and storing analogue data requires huge space or bandwidth. Wired systems are also prone to vandalism, they cannot be installed in a hostile terrain and in heritage sites, where cabling would distort original design. Currently, there is a paradigm shift towards wireless solutions (WiMAX, Wi-Fi, 3G, 4G) to complement and in some cases replace the wired system. A wireless solution of the F

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Chuang, Chia-ning, and 莊家寧. "Multiplexer Design for WiMAX Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/74217188767279720413.

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碩士<br>國立中央大學<br>電機工程研究所<br>98<br>In the thesis, diplexers and triplexers for WiMAX applications are proposed. The proposed diplexer is mainly composed of a 1/2 ? and a 1/4 ? parallel-coupled-resonator bandpass filters. By using 1/4 ? parallel-coupled-resonator filter, the spurious passband will appear at 3f0. Thus, the isolation between two channels can be enhanced. In many conventional diplexer designs, T-junction is often used to connect both filters. This strategy could lead to the increase of the circuit area. Therefore, instead of the T-junction, common coupled lines are used to connect t

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Ke, Bi-Jin, and 柯弼晉. "Novel Antenna Designs for WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/13472298325371977328.

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碩士<br>正修科技大學<br>電子工程研究所<br>97<br>This study mainly focused on antenna designs for WiMAX applications. In practical applications, broadband antennas use multiple-input multiple-output system to increase the transmission speed. Also, filters are used to suppress unwanted bands. Both the strategies will lead to increasing difficulty and cost. Therefore, this study proposes several novel designs. First, a broadband monopole antenna design is presented. This design reduces the antenna dimension and increase bandwidth by the capacitive coupling between the radiating patch and the ground plane. Secon

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Wang, Kung-Cheng, and 王冠程. "Study of Multicast Applications over WiMAX Networks." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/84yyzy.

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碩士<br>國立東華大學<br>資訊工程學系<br>95<br>As a new wireless network-802.16 (WiMAX) appeared, more and more applications will be use on WiMAX network. Compare with WiFi, WiMAX equips bigger bandwidth and distance of transmission. There were many companies thought that WiMAX will replace 3G system to a new protocol of cellular phone. Besides, applications of WiMAX are very popular; including private business, service of broadband wireless, and mobile broadband. This study proposed a multicast mechanism based on WiMAX attributes. Although there are a lot of researches proposed multicast protocol [1-3], in

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Wun-Kai, Wu, and 吳文凱. "Small Printed Antenna Design for WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/06725085463764928190.

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碩士<br>華梵大學<br>電子工程學系碩士班<br>97<br>WiMAX(Worldwide Interoperability for Microwave Access) apply to Hand-held Devices, such as notebook , mobile phone and PDA .The notebook request of more lighter, more thinner and more smaller, and therefore affect the component size. This thesis focuses to designs printed Planar Inverted F Antenna (PIFA) in notebook. In finite space , We use printed circuit broad (PCB) to production this antenna for WiMAX Applications . We also design and simulated with a full wave EM software (HFSS or Ie3D), the band is 2.3GHz~2.7GHz and 3.3GHz~3.8GHz and 4.8GHz~5.8GHz. The b

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Lin, Chien Ching, and 林千靖. "Planar Inverted F Antenna for WiMAX Applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/34446891683169388226.

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碩士<br>長庚大學<br>電子工程學研究所<br>96<br>Because the volume of wireless communication device becomes more mini than before, smaller antennas are going to be future trend. The problem is that the efficiency of antenna might decrease while the size of antenna is becoming smaller. For that reason, the efficiency of antenna is a very important issue to designing antenna besides matching and resonance frequency. The thesis is discussing how to utilize Planar Inverter-F antenna (PIFA) technology to design an applicable antenna for Worldwide Interoperability for Microwave Access (WiMAX) in 2.5-2.69GHz. PIFA i

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Tu, Wan-Lu, and 凃宛呂. "Planar Open Slot Antennas for WiMAX Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/47738201263555380362.

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碩士<br>國立高雄應用科技大學<br>電子工程系<br>98<br>In this thesis, the design of broadband planar open slot antennas are studied and proposed for WiMAX applications. The proposed antennas present in chapters of the thesis. An asymmetrical tapered slot by microstrip feedline with a wide tuning stub to enhance the impedance bandwidth is presented in chapter two of the thesis. In chapter three, a rhombus open slots with a rhombus parasitic element by embedding a pair of parasitic strips on both sides of the microstrip feed line is proposed for broadband operation. In chapter four, an open slot antenna with an op

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Yeh, Chih-Hsuan, and 葉至軒. "Compact Antenna Design for WLAN/WiMAX Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/36657615179572621402.

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碩士<br>逢甲大學<br>電機工程所<br>101<br>This thesis focus on the design of compact multiband antenna, three monopole antennas design with different structure are proposed. The desired operating bands of these three proposed antennas type are successfully implemented by applying various design techniques. A CPW-fed planar U-shaped monopole antenna is initially presented in this thesis, and the total dimension of this antenna is 20 × 38.5 × 0.8 mm3. The basic structure of the proposed antenna is a symmetric U-shaped radiating element, and a symmetrical parasitic element is also loaded behind this radiatin

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Chen, Guan-Jhong, and 陳冠中. "Embedded WiMAX-based Pervasive System for Vehicle Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/94125379391936191037.

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碩士<br>國立東華大學<br>資訊工程學系<br>97<br>With the advances in wireless technology and the wireless terminal devices (such as: mobile phone, PDA, laptop) low price, the user can access anywhere, even in the transportation, to links to the information network, and freely access to the necessary Internet service in order to bring a great convenience. Has been how to achieve network Ubiquitous Computing environment for the majority of people are concerned about the current development issues, but it still has the needs of the integration of various technologies to build this environment, so the integration

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"Parallel Doherty RF Power Amplifier For WiMAX Applications." Master's thesis, 2018. http://hdl.handle.net/2286/R.I.51661.

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abstract: This work covers the design and implementation of a Parallel Doherty RF Power Amplifier in a GaN HEMT process for medium power macro-cell (16W) base station applications. This work improves the key parameters of a Doherty Power Amplifier including the peak and back-off efficiency, operational instantaneous bandwidth and output power by proposing a Parallel Doherty amplifier architecture. As there is a progression in the wireless communication systems from the first generation to the future 5G systems, there is ever increasing demand for higher data rates which means signals with hig

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Cheng_HsuanHsu and 許振軒. "Dual–Polarization Array Antenna Design for WiMAX Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/02980277137695225637.

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碩士<br>國立成功大學<br>電機工程學系專班<br>98<br>The main objective of this thesis is to discuss the high gain dual-polarization antennas applied on customer premises equipment of WiMAX application. The primary content includes simulation analysis and experiment measurement on the dual polarization array antennas with different number of array elements and different feed network structure. In Chapter 2, we propose the antenna design composed of two different feeding system, which can reduce the space of the orthogonal polarization configuration and place the feed network on both side of the ground to achieve

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Liu, Wei-Hung, and 劉韋宏. "Design of Planar Antennas for WLAN / WiMAX Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/16188186111053612248.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>100<br>In this thesis, we have proposed two types of antennas for WLAN / WiMAX applications. Both designs were fabricated on FR4 substrates with simple structure. The first proposed antenna fed by a CPW line consists of a four-branch structure which control the resonant modes to achieve good impedance match. The designed antenna depicted return loss of 10 dB for the entire bandwidth range from 2.35~2.81 GHz, 3.3~3.87 GHz, and 5.02~6.11 GHz. The covering frequency bands conform to the specification of WLAN ( IEEE 802.11a/b/g ) and WiMAX ( IEEE 802.16x ) applications.

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Chang, Chia-Wei, and 張家瑋. "Chip Design of Low Noise Amplifiers for WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/65379757970136217321.

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碩士<br>國立彰化師範大學<br>積體電路設計研究所<br>97<br>This thesis present the low noise amplifier applied to the ultra wide-band systematic front end circuit. The chip fabricated in TSMC 0.18μm 1P6M RF/Mixer-signal CMOS process. First, we propose a 2-11GHz low noise amplifier. This LNA has illustrated fully integrated that can cover 2-11GHz for WiMAX receiver. By employing the current-reused configuration with a negative feedback, the proposed LNA provided a peak power gain of 12.1 dB under a power dissipation of 14.3 mW. The NF is ranged from 3.6 to 3.628 dB within the bandwidth. In the second chip design, we

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Ji-Wei, Yeh, and 葉紀維. "Modified asymmetric folded dipole antenna for WLAN/WiMAX applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/uqg5yz.

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碩士<br>景文科技大學<br>電腦與通訊研究所<br>101<br>This thesis focuses on the improvement of folded dipole antenna design. The original folded dipole antenna has a loop structure with a length of one-half wavelength and a width of less than one percent wavelength. However, it may not be used in small space of the product because of its size. The new design applies the coupling effect of ground-trace the current distribution on the antenna to generate change. The new antenna has been minimized to quarter wavelength. This Improved asymmetric folded dipole antenna, conditions of less than 10dB Return Loss op

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Shih-Hung, Cheng, and 鄭士弘. "Novel Design of Dipole Antennas for WLAN/WiMAX applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/01977673822175876213.

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碩士<br>南台科技大學<br>通訊工程研究所<br>97<br>The article presents some novel planar dipole antennas design for multi-band operation. The antenna designs for WLAN and WiMAX standard are successfully implemented and investigated. In the first design, the dipole antenna was designed to operate at 3GHz. We presented a novel T-shape slit embedded on the dipole antenna without increasing extra size of the antenna to achieve dual-band operation for WLAN applications. In the second design, we changed the dimension of the dipole antenna and embedded a T-shape slit on the antenna to generate dual-band operation. To

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Chen, Chih-Min, and 陳志民. "A DAUL-BAND LOW NOISE AMPLIFIER FOR WIMAX APPLICATIONS." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/10456746138312788812.

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碩士<br>大同大學<br>通訊工程研究所<br>98<br>This thesis discusses the implementation of the dual-band low noise amplifier for WiMax application. We have reviewed the structures of the low noise amplifier and their advantages and disadvantages. The LNA employs an inductively degenerated common-source amplifier as the first stage for impedance matching. To achieve the desired gain and output matching, a common-source and source follower stages are used for the second and third stages, respectively. TSMC 0.18μm COMS process parameters and Agilent ADS (Advance Design system) are used to carry out the circuit s

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Hsueh, Ting-Ming, and 薛丁明. "Miniaturization of RF Front-End Module for WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/38587115140299391887.

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碩士<br>元智大學<br>通訊工程學系<br>97<br>The main objective of this thesis is the development of miniaturized RF front-end module for WiMAX applications. Active components (mainly in MMIC form) will be selected based on the system specifications. Main focus and contribution will be in the design and implementation of passive components including the antenna and bandpass filters. The main criterion for the determination of implementation technologies is to achieve the maximum level of integration for the front-end module. Functional tests and field tests of the Tx/Rx chains exhibited a transmission distan

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Yang, Chih-Hsun, and 楊智勛. "A 3.5GHz CMOS RF Front-end for WiMAX Applications." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/13453985326610410716.

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碩士<br>國立清華大學<br>電機工程學系<br>96<br>In this thesis, two CMOS RF front-end circuits are proposed for WiMAX applications. These circuits are realized in TSMC 0.18 um 1P6M CMOS process technology can be applied to direct conversion receivers for high integration. For the first RF front-end circuit, the negative-resistance loading are used to increase the gain and the noise performance. Moreover, there is a DC-offset cancellation loop to solve the DC-offset problem. According to the measurement results, the RF front-end has a voltage conversion gain (CG) of 11 dB, a 1-dB gain compression point (P1dB)

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Chen, Kuan-Yu, and 陳冠宇. "The Design and Implementation of Transmitter for WiMAX Applications." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/68938280818504805798.

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碩士<br>國立中央大學<br>電機工程研究所<br>94<br>This thesis describes several radio frequency circuit designs, which are adopted in WiMAX applications. They are implemented with TSMC 0.35�慆 SiGe BiCMOS process. The following sections will summarize the practical measured results which will be thoroughly presented in following chapters. Chapter 2 introduces the designs of sub-circuits of radio-frequency transmitter, including up-conversion mixer, and variable-gain amplifier. These circuits are measured on FR4 print circuit boards. The up-conversion mixer achieves conversion loss of 9 dB, output P1dB of -11 dB

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Ku, Kuang Yuan, and 古光原. "Small open slot antenna for WLAN/WiMAX/UWB applications." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/51129656783883170937.

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碩士<br>南台科技大學<br>電子工程系<br>95<br>In this thesis, we proposed open slot antenna designs, including band-rejected and enhance bandwidth for WLAN, WiMAX and UWB applications. In practical applications, broadband antenna must use filter to suppress dispensable bands lead to increase cost. First, the broadband characteristic (2.3~6.1GHz) of open slot antenna design with small size is proposed. Then, by inserting strip on printed open slot of the broadband antenna to reject dispensable bands, a dual-broadband design of the open slot antenna with small size is obtained for WLAN applications in the 2.4/

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Kuo, Chiung-Ying, and 郭瓊英. "Design of High Gain Array Antenna for WiMAX Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/88235117060273473907.

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碩士<br>國立高雄應用科技大學<br>光電與通訊研究所<br>98<br>The main objective of this thesis is about high gain array antennas for Worldwide Interoperability for Microwave Access (WiMAX) applications. Two dual-polarized array antennas operated in MMDS band (2500~2700 MHz) and a linear-polarized array antenna operated in FWA band (3300~3800 MHz) are proposed. By using the air-layer substrate with low permittivity in this thesis, low antenna quality factor Q is obtained and wide impedance bandwidth and high antenna peak gain is also achieved. The proposed geometries in the present design are all patch antennas with

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Chen, Wei-Chih, and 陳韋志. "The Research of Antenna for WLAN/ WiMax / UWB Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/31273920560392101394.

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碩士<br>崑山科技大學<br>電腦與通訊研究所<br>100<br>The main proposal for this thesis is three antenna types, one of which is the asymmetric monopole antenna. This antenna structure is to create the broadband impedance match by feeding it through the middle of a two-tier board. In addition to this is the smaller radiator has been fitted with an open slot to expand the bandwidth of the high frequency oscillation. As a result the entire design of this antenna can achieve the dual-band and broadband characteristics, including the frequency range of 2.31-3.83GHz and 4.88-6.0GHz. This antenna can also be applied to

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HONG, CHENG-YU, and 洪承佑. "Triband Monopole Antenna With Slits for WLAN/WiMAX Applications." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/3pkn4x.

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碩士<br>大葉大學<br>電機工程學系<br>107<br>In this paper, a coplanar waveguide (CPW) tri-band monopole antenna with slits is designed for WLAN/WiMAX applications. The antenna is based on a funnel shape monopole antenna with two inverted-L slots and a V-shape slot. We focus on those three slots to create tri-band frequencies. The required frequency bands are 2.4-2.48 GHz, 3.44-3.94 GHz, and 5.16-5.68 GHz, which cover the 2.4 G/5.2 GHz WLAN band and 3.5/5.5 GHz WiMAX.

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See, Chan H., Raed A. Abd-Alhameed, Z. Z. Abidin, Neil J. McEwan, and Peter S. Excell. "Wideband Printed MIMO/Diversity Monopole Antenna for WiFi/WiMAX Applications." 2012. http://hdl.handle.net/10454/6177.

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A novel printed diversity monopole antenna is presented for WiFi/WiMAX applications. The antenna comprises two crescent shaped radiators placed symmetrically with respect to a defected ground plane and a neutralization lines is connected between them to achieve good impedance matching and low mutual coupling. Theoretical and experimental characteristics are illustrated for this antenna, which achieves an impedance bandwidth of 54.5% (over 2.4-4.2 GHz), with a reflection coefficient <;-10 dB and mutual coupling <;-17 dB. An acceptable agreement is obtained for the computed and measured gain, ra

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Huang, Chun-Chieh, and 黃俊傑. "Design Low Mutual Coupling WLAN/WiMAX Antenna for MIMO applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/ndzawx.

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碩士<br>國立中山大學<br>電機工程學系研究所<br>96<br>In recent year, wireless communications systems require transmission of higher and higher data rates to foster various multimedia services. The multiple-input multiple-output (MIMO) antennas system has been studied to increase wireless channel capacity and reliability. The mutual coupling of MIMO antennas affects the capacity of the wireless channel. Traditionally, the minimal mutual coupling distance between antenna elements needs to be at least one half wavelength. When MIMO antenna system is used in miniature mobile device, the problem of mutual coupling

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Lai, Hsiu-Chun, and 賴秀全. "Chip Design of LNAs for 802.11a and WIMAX/UWB Applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/56883808405604109467.

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碩士<br>國立彰化師範大學<br>積體電路設計研究所<br>96<br>This thesis presents the design of a 2-11GhZ low noise amplifier (LNA) and a 5.7GHz gain-variable low noise amplifier fabricated in TSMC 0.18μm 1P6M RF/Mixer-signal CMOS process. First, we propose an 2-11GhZ low noise amplifier. This LNA has illustrated fully integrated dual-band LNA that can cover 2-11GHz and 3.1-10.6GHz for WiMAX and UWB receiver. By employing the current-reused configuration with a negative feedback, the proposed LNA provided a peak power gain of 12.46 dB and a good input matching under a power dissipation of 7.52 mW. The NF is ranged fr

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Chih, Hu Ming, and 胡茗智. "An Area-Efficient Double-Binary CTC Decoder for WiMAX Applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/97255549408716360884.

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碩士<br>國立交通大學<br>電子工程系所<br>96<br>Double-binary convolutional turbo code (CTC) decoding algorithm is introduced in this thesis, and a fully compliant and area-efficient CTC decoder for WiMAX 802.16e is proposed. The proposed decoder can support all code lengths specified in IEEE 802.16e system. By scaling the extrinsic information, the Max-Log MAP algorithm is used such that hardware complexity can be reduced with the minimized performance loss. For saving memory requirement and reducing decoding latency, the pseudo two-port register file is also demonstrated to allow read and write operation wi

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Liu, Chia-Hong, and 劉佳鴻. "Wide Stopband Bandpass Filters Used on Bluetooth and WiMAX Applications." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/h5tymw.

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Yen-Hsun, Chu, and 朱彥勳. "Compact Muti-band Antenna Design for WLAN/WiMAX/LTE Applications." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/04929350982755124568.

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碩士<br>明志科技大學<br>電機工程系碩士班<br>102<br>Two kinds of antennas which are applied to different applications are proposed in this paper. The first antenna is designed by using PIFA structure for notebook including WLAN(2.4GHz~2.484GHz, 5.15GHz~5.35GHz, and 5.725GHz~5.85GHz), WiMAX(2.3GHz~2.69GHz, and 5.25GHz~5.85GHz), LTE(2.3GHz~2.5GHz、2.5GHz~2.69GHz), and Bluetooth(2.4GHz~2.48GHz) operating bands. The size of this antenna is 20(W)×10(L)×1.6(H) 〖mm〗^3, with a system ground plane of 160(W)×100(L)×1.6(H) 〖mm〗^3, and it is printed on a FR4 substrace. The measured return loss of the antenna covers 2.25GH

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LIN, TSUNG-YI, and 林宗億. "Performance analysis of Wimax applications in telemedicine and home care." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/44939312528264783963.

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碩士<br>亞洲大學<br>光電與通訊學系碩士班<br>99<br>Medical Treatment network has been upgraded from wired to wireless, however we have to face the problem of weak signals, topography effects and upload limits. That makes user cannot have a stable and better net quality. Wimax has more 10 times of upload limits than 3.5G system, and has more resorces to access medical treatment information. We truly hope that Wimax can provide Health Care a efficiency and convenient Network. Knowing the benefits of Wimax, we’ll base on the net quality of Telemedicine and Home Care to set the parameter of Wimax in Ipv4/v6 and ob

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Huang, Guo-Lun, and 黃國崙. "Design of Multi-Band Planar Antennas for WLAN/WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/23742508864341916208.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>97<br>In this thesis, several designs of compact multi-band planar antennas fed by CPW line for WiMAX applications are presented and experimentally studied. The study of a multi-band planar monopole antenna embedded with an I-shaped slot and an I-shaped parasitic metal plate has been firstly presented. The proposed antenna can excite a new resonant mode close to the fundamental mode due to the asymmetrical I-shaped parasitic metal plate to cover the WLAN 2.4 GHz. Next, a wideband monopole antenna with two strips and a pair of notches is proposed. The first resonant

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Cai, Ciao-Ning, and 蔡喬甯. "Design of Multi-Band Low Noise Amplifier for WiMAX Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/13691455801885184573.

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碩士<br>國立成功大學<br>電機工程學系專班<br>97<br>In a radio-frequency front-end receiver, it includes low noise amplifier, oscillator, and mixer. A low noise amplifier is the first stage of a receiver. It can amplify the received signal and reduce the noise of whole system in order to improve the accuracy of transmission. The amplified signal will be mixed with a local signal in a mixer and then be down-converted into an intermediate-frequency signal. In this thesis, the primary research focuses on the design of low noise amplifiers for WiMAX applications. They include a multi-band low-noise amplifier using

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Chen, Yi-Ting, and 陳依婷. "Design and Manufacture of High Gain Antennas for WiMAX Applications." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/15387122407494129599.

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碩士<br>國立高雄應用科技大學<br>光電與通訊研究所<br>96<br>This thesis mainly study in high gain antennas for WiMAX applications. In Chapter 2, we propose a rectangle slot coupled antenna electromagnetic energy coupling to the radiator and the rectangle slot is etched in the ground plane. A 2 2 array antenna, based on previous single antenna is proposed to improve the antenna directivity and gain. In Chapter 3, we propose a microstrip-fed coupled high gain antenna with an air substrate, that raise an air layer to reduce the dielectric constant of equivalent substrate and increase the thickness of substrate for inc

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Liang, Shu-chi, and 梁書旗. "Design of Dual Gain Mode CMOS LNA for WiMAX Applications." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/88388562073551431469.

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碩士<br>國立交通大學<br>電子工程系所<br>95<br>In this thesis, a dual-gain mode design of a direct-conversion CMOS RF LNA for IEEE 802.16e (WiMAX) applications is presented. Two gain modes with one switch stage are designed in the purposed LNA to enlarge the dynamic range. It needs only one common input matching network for different gain modes. Multiple Gated Transistors topology is integrated for linearity enhancement. The circuit is fabricated in 0.13�慆 CMOS process, and it is designed for operation frequency of 2.3 to 2.7 GHz. A behavior model of the circuit is constructed to facilitate the design cycle.

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Cheng, Ming-Te, and 鄭明德. "The Sigma-Delta Modulator Design and Analysis for WiMAX Applications." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/54183751190774415264.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>95<br>WiMAX wireless communication uses Orthogonal Frequency Division Multiplexing (OFDM) to transfer high data rates. The standard offers flexible bandwidths between 1.25MHz to 20MHz and different modulation schemes including BPSK, QPSK, 16QAM and 64QAM to enable WiMAX systems to adaptively change the speed and capacity of the wireless connection based on the practical demand. For such a multi-band, multi-speed system imposes significant challenges in transceiver blocks and requires adaptability and re-configurability to cope with different requirements. With the on

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Wang, Lan-Hsin, and 王嵐新. "Designs of Compact MIMO Antennas for WLAN/WiMAX System Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/77407733519829822934.

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碩士<br>高雄師範大學<br>光電與通訊工程學系<br>98<br>Two compact MIMO antennas, designed for WLAN/WiMAX system applications, are presented in this thesis. The first MIMO antenna system is composed of three triple-branch loop antennas. Each triple-branch loop antenna is excited by electromagnetically coupled feeds, and all triple-branch loops are designed to be half-wavelength resonant structure, thus achieving the miniaturization of the antenna size. Good impedance matching over the 2.4, 3.5, and 5 GHz bands for the three branch loops can be easily achieved by properly choosing the coupling gaps and coupling po

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Chen, Guan-Zhong, and 陳冠忠. "Design of the Monopole Antenna for WLAN/WiMAX System Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/15331468752531633050.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>98<br>In this thesis, several designs of planar wide-band monopole antennas fed by CPW line for WLAN / WiMAX applications were studied and presented. The planar monopole antenna is constructed on an inverted trapezoidal patch and utilizing the bevel edge to produce the transverse current distribution. The design enables the reduction of the variation of the characteristic impedance and a wide-band capability is achieved. Two rectangular notches in the antenna base plate have been constructed to improve the impedance matching capability and also provide the mean to a

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Kerketta, Jablun, and Soubhagya Ranjan Behera. "Design of Fractal slot Antennas for WLAN and WiMAX Applications." Thesis, 2012. http://ethesis.nitrkl.ac.in/3767/1/THESIS_EI024_EI039.pdf.

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A wideband printed slot antenna suitable for wireless local area network (WLAN) and satisfying the worldwide interoperability for microwave access (WiMAX) applications is proposed here. The antenna is microstrip line fed and its structure is based on fractal geometry where the resonance frequency of antenna is lowered by applying iteration techniques. The Project aims in finding the return loss and the radiation pattern. Analysis of fractal antenna is done by using Software named CST Microwave Studio Suite. The antenna size inclusive

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