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Dissertations / Theses on the topic 'Inverted-F'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Hedlund, Rickard. "Antenna Study for IoT Devices." Thesis, Linköpings universitet, Fysik och elektroteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130011.

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This thesis investigates the possibility to design printed circuit board (PCB) antennas with a maximum area size of 30 x 30 mm^2 at 2.4 GHz. The resulting antenna parameters are compared to those of a commercial, more costly chip antenna, i.e., Antenova A5645. The antenna parameters that were evaluated were the antenna efficiency, the return loss and the voltage standing wave ratio(VSWR). Three types of antennas were firstly selected to be designed, i.e., the patch antenna, Inverted-F antenna and Meandered Inverted-F antenna. Using basic antenna theory, general RF knowledge and through simulat

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2

Chattha, Hassan Tariq. "Planar inverted-F antennas for wireless communication." Thesis, University of Liverpool, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539735.

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3

Tirmizi, Syed Muhammad Asad, and Amalachukwu Okeke. "On-PCB Inverted-F Antenna Design For Wireless Sensor NodesOn-PCB Inverted-F Antenna Design For Wireless Sensor Nodes." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42424.

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The Internet of things (IoT) is a disruptive innovation which has shown the potential to change the way we live our lives. At the core of the IoT eco systems are the wireless sensor nodes. These are responsible for the sensing of the target environment parameters or situations and communication of such to the desired destinations. For this communication to happen, a good performing antenna is required. This project explores the design of an on-PCB inverted-F antenna for a wireless sensor node. The Literature review and insight into wireless sensor nodes and antenna design are conducted. The de

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4

He, Jianwei. "A study of planar inverted-F antennas in a dielectric enclosure." Curtin University of Technology, Dept. of Electrical and Computer Engineering, 2006. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=18550.

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Demand for small and low-profile antennas has greatly increased due to the desire for miniaturisation of modern-day mobile radio electronic terminals. Such an antenna is often integrated into the dielectric casing of a terminal, or independently enclosed within a dielectric radome to provide a protection from operating environments and keep the system more compact. However, the dielectric casing or radome may interact strongly with the antenna and result in losses in performance. The primary focus of this dissertation is to investigate and enhance the performance of Planar Inverted-F Antennas

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Huynh, Minh-Chau Thu. "A Numerical and Experimental Investigation of Planar Inverted-F Antennas for Wireless Applications." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/35477.

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<p align=justifiy> In recent years, the demand for compact handheld communication devices has grown significantly. Devices having internal antennas have appeared to fill this need. Antenna size is a major factor that limits device miniaturization. In the past few years, new designs based on the microstrip antennas (MSA) and planar inverted-F antennas have been used for handheld wireless devices because these antennas have low-profile geometry and can be embedded into the devices.</p> <p align=justifiy> New wireless applications requiring operation in more than one frequency band are emerging.

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6

Wahidi, Ashar. "Design and optimization of multiple printed inverted-F antennas (PIFAs) on a semi-populated mobile handset." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=114526.

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This thesis investigates the radiation characteristics of a semi-populated cellular mobile handset that uses two Printed Inverted-F Antennas (PIFAs). The investigation is carried out at three different frequencies; the LTE Band 13 (746-786 MHz), GSM-900 (890-960 MHz) and GSM-1800 (1710-1880 MHz). The mobile handset is populated with the components that affect the antenna properties the most, a battery and an LCD screen, to make the investigated model more realistic. A methodology is first presented to design the PIFAs in the presence of other components on the board. Using the outlined metho

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7

Khatib, Amer. "A Novel and an Efficient Design of an Inverted F-Antenna for Bluetooth Low Energy Communications." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-40523.

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Constantly, antenna plays an important role in expanding the wireless communication systems in different technology applications for example, but not limited to, IoT communications and automotive radar systems. On the other hand, the Bluetooth-Low-Energy (BLE) benefits different sorts of applications, as it offers (i) a very low power consumption, (ii) a very fast data transfer, (iii) and an inexpensive/efficient solution as well. This research is a part of AES-Nordic AB projects, which intends to improve the connection between remote vibration sensors and the measurement device. The vibration

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8

Gobien, Andrew Timothy III. "Investigation of Low Profile Antenna Designs for Use in Hand-Held Radios." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36959.

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Antennas in hand-held radios must be compact and unobtrusive. Electrically small and low-profile antennas experience high input reactance, low input resistance, and low radiation efficiency.Further degradation of radiation efficiency occurs in hand-held radios due to size-reduced ground planes, losses within the plastic device casing, and losses due to coupling with the tissue of the user. These factors may also affect the radiation pattern of the antenna. This discussion reports on antenna designs that are well suited for hand-held radios. The design issues are covered for electrically sma

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9

Saraereh, Omar Aqeel. "The design of multi-band planar inverted-F antennas for mobile handsets with the aid of a novel genetic algorithm and their specific absorption rate." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/34701.

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Wireless communications have progressed very rapidly in recent years and mobile handsets are becoming smaller and smaller. Present-day mobile cellular communication systems include combinations of the AMPS, GSM-900, DCS-l800, PCS-1900, UMTS, and WLANs in the 2.4GHz and 5.2GHz bands. User requirements for access to the various aforementioned wireless telecommunication services have resulted in a rapid technological push to unify these different systems in a drastically decreased size single mobile handset. All this combined with strict limitations set for the energy absorbed by the users of mob

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10

Panayi, Petros K. "Design and comparative performance evaluation of novel mobile handset antennas and their radiative effects on users." Thesis, University of South Wales, 2000. https://pure.southwales.ac.uk/en/studentthesis/design-and-comparative-performance-evaluation-of-novel-mobile-handset-antennas-and-their-radiative-effects-on-users(f084a72c-b06d-47a6-8546-8ada0844c981).html.

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The beginning of the 21 st century is characterised, among others, by the evolution in telecommunications. The rapid growth of mobile communications and the variety of applications proposed for the third generation (3G) systems require long operation time, low weight and cost for terminals, as well as improved link quality. For this reason a good efficiency and low profile antennas with low absorption losses by the user are desirable. The Planar Inverted-F Antenna (PIFA) is shown to result into low SAR values and high efficiency when operating in the proximity of the user. Despite these advant

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11

Daněk, Jan. "Anténa pro univerzální vysílač." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219134.

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This work describes an electrically small antennas used for mobile devices in the ISM band. The aim of this work is to select an antenna for a universal transmitter/receiver working in the 868 MHz band. The work contains description of the universal transmitter/receiver, and a list of suitable antennas. Tolerance analysis is performed by numerical model. The proposed antenna is manufactured and measured.

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Komulainen, M. (Mikko). "Bandwidth enhanced antennas for mobile terminals and multilayer ceramic packages." Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514290879.

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Abstract In this thesis, bandwidth (BW) enhanced antennas for mobile terminals and multilayer ceramic packages are presented. The thesis is divided into two parts. In the first part, electrically frequency-tunable mobile terminal antennas have been studied. The first three antennas presented were of a dual-band planar inverted-F type (PIFA) and were tuned to operate in frequency bands appropriate to the GSM850 (824–894 MHz), GSM900 (880–960 MHz), GSM1800 (1710–1880 MHz), GSM1900 (1850–1990 MHz) and UMTS (1920–2170 MHz) cellular telecommunication standards with RF PIN diode switches. The first

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13

Abidin, Z. Z. "Design, modelling and implementation of antennas using electromagnetic bandgap material and defected ground planes. Surface Meshing Analysis and Genetic Algorithm Optimisation on EBG and Defected Ground Structures for Reducing the Mutual Coupling between Radiating Elements of Antenna Array and MIMO Systems." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5385.

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The main objective of this research is to design, model and implement several antenna geometries using electromagnetic band gap (EBG) material and a defected ground plane. Several antenna applications are addressed with the aim of improving performance, particularly the mutual coupling between the elements. The EBG structures have the unique capability to prevent or assist the propagation of electromagnetic waves in a specific band of frequencies, and have been incorporated here in antenna structures to improve patterns and reduce mutual coupling in multielement arrays. A neutralization

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Abidin, Zuhairiah Zainal. "Design, modelling and implementation of antennas using electromagnetic bandgap material and defected ground planes : surface meshing analysis and genetic algorithm optimisation on EBG and defected ground structures for reducing the mutual coupling between radiating elements of antenna array MIMO systems." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5385.

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The main objective of this research is to design, model and implement several antenna geometries using electromagnetic band gap (EBG) material and a defected ground plane. Several antenna applications are addressed with the aim of improving performance, particularly the mutual coupling between the elements. The EBG structures have the unique capability to prevent or assist the propagation of electromagnetic waves in a specific band of frequencies, and have been incorporated here in antenna structures to improve patterns and reduce mutual coupling in multielement arrays. A neutralization techni

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15

Elfergani, Issa T. "Investigation, design and implementation of frequency tuneable antennas for mobile handset and UWB applications : simulation and measurement of tunable antennas for handheld mobile handsets and UWB system, investigations of frequency tuneable range, antenna radiation performance and antenna design optimisation using parametric studies." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/13761.

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16

Brandsegg, Rune. "2,4 GHz printet invertert-F antenne for kortholdskommunikasjon." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10547.

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<p>For å lage nye og mer kompakte RF enheter, trengs det også mindre antenner. I denne oppgaven er en invertert F-antenne studert. Det er utført simuleringer for å kartlegge hvordan antennens egenskaper forandrer seg når ulike dimensjoner endres, og hvordan størrelsen på jordplanet påvirker antennen. Overgangen fra SMA-kontakt til koplanar transmisjonslinje er simulert for å minimere refleksjoner som kan komme av dårlige overganger. Det er simulert en antenne på et stort jordplan, og en antenne på et lite jordplan, som begge opererer i 2,4 GHz-båndet, nærmere bestemt 2,40 - 2,48 GHz. De simule

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Hraga, Hmeda I. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications. Simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.

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The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary. In this thesis, de

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Hraga, Hmeda Ibrahim. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications : simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.

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The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary. In this thesis, des

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Zhang, Shuai. "Investigating and Enhancing Performance of Multiple Antenna Systems in Compact MIMO/Diversity Terminals." Doctoral thesis, KTH, Elektroteknisk teori och konstruktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-116402.

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Today, owners of small communicating device are interested in transmitting or receiving various multimedia data. By increasing the number of antennas at the transmitter and/or the receiver side of the wireless link, the diversity/Multiple-Input Multiple-Output (MIMO) techniques can increase wireless channel capacity without the need for additional power or spectrum in rich scattering environments. However, due to the limited space of small mobile devices, the correlation coefficients between MIMO antenna elements are very high and the total efficiencies of MIMO elements degrade severely. Furth

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Forsmark, Christopher. "Investigation of magnetic sensors and hardware design of a sensor platform for human-computer interaction purposes." Thesis, Linköpings universitet, Fysik och elektroteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143872.

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Company A develops algorithms and hardware for the application of magnet tracking, to be able to use a dipole magnet as an interaction tool between humans and computers. This master thesis investigates the available magnetic sensors through a market survey and practical testing of a selection of the sensors in purpose to determine the most suitable magnetic sensor and magnetic sensor technology for the application of magnet tracking. With the most suitable sensor found in the investigation, a sensor platform is designed and manufactured. The sensor HMC5983 from Honeywell is found to be the mos

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Butt, Munam. "Systemization of RFID Tag Antenna Design Based on Optimization Techniques and Impedance Matching Charts." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23064.

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The performance of commercial Radio Frequency Identification (RFID) tags is primarily limited by present techniques used for tag antenna design. Currently, industry techniques rely on identifying the RFID tag application (books, clothing, etc.) and then building antenna prototypes of different configurations in order to satisfy minimum read range requirements. However, these techniques inherently lack an electromagnetic basis and are unable to provide a low cost solution to the tag antenna design process. RFID tag performance characteristics (read-range, chip-antenna impedance matching, surrou

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Kruger, Gert Lodewikus. "Implementation and evaluation of V/f and vector control in high–speed PMSM drives / Kruger G.L." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7609.

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The McTronX research group, at the Potchefstroom campus of the North–West University, has been researching Active Magnetic Bearings (AMBs). A fully suspended, flywheel energy storage system (FESS) has been developed. Due to excessive unbalance on the rotor, the motor drive could not be tested up to its rated speed. In the interim, until the rotor can be balanced and other rotor dynamic effects have been investigated, the group decided that the existing drive control should be improved and tested on a high–speed permanent magnet synchronous motor (PMSM), using normal roller element bearings. In

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23

Wang, Kai Chun, and 王凱群. "Printed 2.4GHz Inverted F Headgear Antenna." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/25513477127594335436.

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碩士<br>東海大學<br>電機工程學系<br>100<br>This paper the uses inverted-F antenna design skills and printing technology to fabricate the antenna body on a circuit board, to significantly reducing the cost. Hollowed out the main ground of the inverted-F antenna, in order to reduce the overall antenna body area, does not affect the overall effectiveness. The concept of microwave antenna and capacitance effect explains increase of the bandwidth for about 10 percent.

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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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Chen, Chien-Liang, and 陳建良. "Planar Inverted-F Antenna Design of Mobile Phone." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/12353100089845996219.

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碩士<br>國立中央大學<br>通訊工程研究所碩士在職專班<br>95<br>The rapid development of the communication industry in recent years，The wireless communication products ，As to antenna products research and small module for wireless require，The application communications require multi-band and wideband operation. PIFA antennas have the advantage of light weight small size and low profile and had found wide application in wireless communication. We suggest multi-band and wideband antennas to economize resource and reduce cost.The multi-band antenna is base on F antenna and we microstrip lines

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See, Chan H., Raed A. Abd-Alhameed, Dawei Zhou, and Peter S. Excell. "Design of Planar Double Inverted-F Antenna for Ultra-Wideband Applications." 2010. http://hdl.handle.net/10454/5460.

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yes<br>A novel miniaturized planar double inverted-F antenna is presented. The antenna design is based on the electromagnetic coupling of two air dielectric PIFA antennas, combined with a broadband rectangular plate feed structure to achieve ultra-wideband characteristics. The computed and experimental impedance bandwidths show good agreement over an UWB frequency band from 3.1 GHz to 10.6 GHz for |S11| < -10dB. The antenna is electrically small, with size 0.31 x 0.16 x 0.09 wavelengths at 3.1 GHz and 1.06 x 0.55 x 0.31 wavelengths at 10.6 GHz. The simulated and measured gain and radiation pat

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Ling, Ya-Kuan, and 凌雅寬. "Integration of Planar Loop Antennas and Inverted F Antennas." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/86613305915763860235.

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碩士<br>淡江大學<br>電機工程學系碩士班<br>97<br>With the rapid development of wireless communication technique, there are continuous needs for dual-band/multi-band antennas to fulfill the application for various communication systems. The conventional multi-band antennas are usually designed through diversity structure or slot loading. But it usually ends up with relatively large volume. In this research, three full planer antennas are proposed for GPS、ISM、WLAN and GPS、(DCS/PCS) or (PCS/UMTS)、WLAN(5.8GHz) applications, respectively. These antennas are fed directly by a 50Ω coaxial line and fabricated on the

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Yu, Ya-Chung, and 游雅仲. "The Miniaturization of Multi-Band Planar Inverted-F Antenna." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/89464157417566971479.

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碩士<br>國立交通大學<br>電信工程系所<br>96<br>For the multisystem applications, the antenna of a handset not only needs small size but also covers multi bands, which means that the antenna must have multi-resonating paths in a limitary size. Due to each radiating element of each frequency band is reduced such that the radiation efficiency is not good and the bandwidth is narrow. These critical parameters are trade-off one another, therefore, it is difficult to keep good performance in a compact antenna of multi-band. PIFA ( planar inverted-F antenna) is the popular type of antenna in the mobile phone marke

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PENG, PIN-YUAN, and 彭品源. "Design of Planar Dipole Antenna with Inverted-F structure." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/vje3d7.

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碩士<br>明新科技大學<br>電機工程系碩士班<br>105<br>In this thesis, FR4 substrate and IE3D software are used to design milti-band antennas, including rectangular slot with inverted-F stub planar dipole antenna which can be applied to 0.7 GHz, 0.9 GHz and 1.8 GHz frequency bands, multi-band inverted-F slot dipole antenna which can be applied to 0.7 GHz, 0.9 GHz, 1.575 GHz, 2.4 GHz, 2.45 GHz, 2.6 GHz, 5.3 GHz, 5.4 GHz, 5.5 GHz, 5.6 GHz, 5.7 GHz, 5.8 GHz and 5.9 GHz frequencies, and triple-band inverted-F slot dipole antenna which can be applied to 1.8 GHz, 2.4 GHz and 5.0 GHz frequency bands. In this study, the

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McDonald, Jacob J. "Analysis, Design, and Operation of a Spherical Inverted-F Antenna." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-527.

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This thesis presents the analysis, design, and fabrication of a spherical inverted-F antenna (SIFA). The SIFA consists of a spherically conformal rectangular patch antenna recessed into a quarter section of a metallic sphere. The sphere acts as a ground plane, and a metal strip shorts the patch to the metallic sphere. The SIFA incorporates planar microstrip design into a conformal spherical geometry to better meet the design constraints for integrated wireless sensors. The SIFA extends a well-established technology into a new application space, including microsatellites, mobile sensor networks

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Chang, Hsi, and 陳曦. "Investigation of Feeding Methods for the Inverted L/F antennas." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/10920168357205470128.

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碩士<br>淡江大學<br>電機工程學系碩士班<br>98<br>In recent years, mobile communication network has been the most widely used wireless application, along with the rapid development of the Internet world wide web. Nowadays, network has become an important platform to carry various software application. Furthermore, the development of wireless LAN out of the fixed broadband networks is a very important and critical step, which enables consumers to access network almost from any place. No need for the cable can one access the network via simply the wireless mobile devices. However, with these compact mobile dev

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Wu, Jung-Chang, and 鄔榮昌. "A study of printed inverted-F antenna in WLAN band." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/98262540436033605348.

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碩士<br>元智大學<br>電機工程學系<br>93<br>The applications of wireless communication technology are much more in our daily life. The more lighter, more thinner, and more smaller of the communication equipments we required, the more important role the antenna plays in a whole wireless communication system, and therefore, the more worth we want to study and develop the design work of the antenna. In this study, we had designed and manufactured the single and dual band antennas on commercial PCBs by using the basic techniques of printed inverted-F antenna and combining with new antenna patterns. Furthermore

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Wang, Chih-An, and 王治安. "Triple-band Planar Inverted-F Antenna Design with Parasitic Element." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/21128898960042412584.

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碩士<br>國立中央大學<br>電機工程研究所碩士在職專班<br>97<br>In this thesis, we present the investigation of a Planar Inverted-F antenna design for IEEE 802.11a/b/g (WLAN), 802.16 (WiMAX), and Bluetooth wireless applications. The frequency ranges of interest are 2400~ 2500 MHz, 3300~ 3700 MHz, and 5100~ 5900 MHz. The proposed triple-band Planar Inverted-F antenna is obtained by adding a parasitic element to a dual-band antenna. Also, the bandwidth of the entire antenna is increased accordingly. To achieve low profile and compact design, meander slot and defected ground are used. HFSS software is applied to simulate

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Lin, Hsiu-Shiung, and 林秀雄. "Design and measurement of Multi-Band Planar Inverted-F Antenna." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/72483530396976855100.

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碩士<br>國立高雄應用科技大學<br>電子與資訊工程研究所碩士班<br>92<br>Several novel PIFA (Planar inverted-F antennas) designs for mobile handsets and parametric study on the characteristics of PIFA are proposed in this thesis. The physical parameters of an antenna, including shorting plate width, antenna input impedance, antenna thickness and ground plane dimensions, are studied.In addition, the several novel types of PIFA have proposed for operating at Dual-band and Triple-band in mobile handsets, this designs utilizes two or more shorted patches with a common shorting plates, Multi-band can be achieved.

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Hsu, Kuo-Pin, and 徐國彬. "Miniaturizing Printed Inverted-F Antenna with GPS and ISM Bands." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/734af9.

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碩士<br>國立臺北科技大學<br>電腦與通訊研究所<br>96<br>The Printed Inverted-F Antenna (PIFA) related dual-band antenna design for the GPS 1.575 and ISM 2.45 GHz bands applications is introduced in this paper. The spiraling tail of PIFA is designed for GPS and serpentine antenna of PIFA is designed for ISM band. Then, our measurement results can show that the spiral (serpentine) antenna has over -10 dB return loss with 20 MHz (280 MHz) bandwidth to be fitted the specification of the GPS 2 (ISM 100) MHz bandwidth during the GPS 1.57542 (ISM 2.4-2.5) GHz frequency band. Two designs with a dual-band antenna can be i

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See, Chan H., Hmeda I. Hraga, Raed A. Abd-Alhameed, Neil J. McEwan, James M. Noras, and Peter S. Excell. "A Low-Profile Ultra-Wideband Modified Planar Inverted-F Antenna." 2013. http://hdl.handle.net/10454/9727.

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No<br>A miniaturized modified planar inverted-F antenna (PIFA) is presented and experimentally studied. This antenna consists of a planar rectangular monopole top-loaded with a rectangular patch attached to two rectangular plates, one shorted to the ground and the other suspended, both placed at the optimum distance on each side of the planar monopole. The fabricated antenna prototype had a measured impedance bandwidth of 125%, covering 3 to 13GHz for reflection coefficient better than -10 dB. The radiator size was 20 x 10 x 7.5 mm(3), making it electrically small over most of the band and sui

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Rolando, David Lee. "Analytical Techniques and Operational Perspectives for a Spherical Inverted-F Antenna." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8910.

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The spherical inverted-F antenna (SIFA) is a relatively new conformal antenna design that consists of a microstrip patch resonator on a spherical ground. The SIFA resembles a planar inverted-F antenna (PIFA) that has been conformally recessed onto a sphere. The basic design, simulation, and fabrication of a SIFA were recently reported. The aim of this thesis is to provide a three-fold improvement to the study of the SIFA: the fabrication of a dielectric-coated SIFA, a new analytical model based on the cavity method, and the analysis of a randomly oriented SIFA’s operation in a remote networkin

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Yu, Hung-Ming, and 游宏明. "Wireless Study of Router / Tablet PC Inverted-F Antenna Isolation Research." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/5yv75d.

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碩士<br>景文科技大學<br>電磁相容及射頻電路設計產業碩士專班<br>101<br>In this thesis, We use two PIFAs to apply in the environment of Wireless product (Router) or Tablet PC. In the 2.4GHz Band (2400~2500 MHz), we analysis the antenna placement for the effect of isolation first, and improve the isolation of the antenna which is better than the target of 17dB under 1cm spacing between two antennas. We use the three solutions which are Pattern diversity, Polarization diversity, and space diversity to analysis the antenna current distribution, return loss, and the changes of 2D pattern. We observed diversity technique and

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YANG, YI-LUNG, and 楊怡隆. "Design and Application of the 4x4 MIMO Planar Inverted-F Antenna." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/z4tydf.

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碩士<br>明新科技大學<br>電子工程系碩士在職專班<br>106<br>With the advances of technology and rapid development of internet, people's demand for mobile communications device with Wi-Fi communication has become the most basic of equipment. In recent years, wireless local area network with more rapid data transfer rate is required. Communication protocol specification from the early 802.11 a, b, g, n has been developed to recent 802.11 ac in order to meet the high speed data transfer with the complex communications environment. Using multiple input multiple output (MIMO: Multi-input Multi-output) communications tec

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"A multilayeredly rolled inverted-F antenna for dual-band mobile phones." 2008. http://library.cuhk.edu.hk/record=b5893656.

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Lam, Fuk Ming.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2008.<br>Includes bibliographical references.<br>Abstracts in English and Chinese.<br>Abstract --- p.I<br>Acknowledgements --- p.V<br>Table of Contents --- p.VI<br>List of Figures --- p.IX<br>List of Tables --- p.XVI<br>Chapter Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- Background --- p.1<br>Chapter 1.2 --- Overview of the Work --- p.5<br>Chapter 1.3 --- Original contribution of this thesis --- p.6<br>Chapter 1.4 --- Organization of this thesis --- p.7<br>Chapter 1.5 --- Remarks on frequency dependent par

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LEE, CHUN-HSIEN, and 李俊賢. "Planar Inverted-F Antenna Design for the Third Generation Cellular Phone." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/04563557427211638971.

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碩士<br>國立中央大學<br>電機工程研究所碩士在職專班<br>96<br>This paper is to design a quad-band (GSM900/ DCS1800/ PCS1900/ UMTS 2100 bands) handset antenna by using Planar Inverted-F Antenna (PIFA) type structure for wireless markets. In the beginning, parameters for designing antenna are focalized and a series of topics are analyzed and researched like antenna slot, pattern, slit, meander line...etc. For adjusting high frequency part, a new concept of T slot is proposed. A table of organized antenna-design-parameters is in the last chapter. Dual band and quad band antenna are designed based on the table of o

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Huang, Chin-Ting, and 黃金鼎. "Design and Study of Planar Inverted-F Antenna for WLAN Applications." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/77880128254532592390.

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碩士<br>國立臺灣海洋大學<br>電機工程學系<br>92<br>In this thesis, our main objective subject is to discuss and analyze the PIFA in wireless LAN(WLAN) application. The designed structures for dual band, broad band and triple band operations are based on the conventional PIFA. A dual band structures is designed by utilizing a U-shape metal sheet with an the etched aperture in the central region of the conventional PIFA, with shorting pins at the edge to achieve the dual operating frequencies of 2.45GHz and 5.8GHz. The impedance bandwidth is respectively, 7.3% and 2.9% at the lower and upper frequencies. For the

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Lee, Ming-Feng, and 李明峰. "DESIGN OF A PLANAR INVERTED-F ANTENNA FOR DUAL BAND MOBILE PHONE." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/73411587615872193352.

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碩士<br>大同大學<br>通訊工程研究所<br>94<br>Recently, mobile communication systems, including the global system for mobile communication (GSM: 880~960MHz), the digital communication system (DCS:1710~1880MHz), have become very popular. Dual-band and compact antennas are required for nowadays’ mobile cellular phone. The purpose of this thesis is to design and study a dual-band, compact internal mobile cellular phone antenna. Planar Inverted-F antenna is applied in this thesis. It provides advantages over traditional external whip and helix antennas in terms of decreased radiation towards the user, and

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Chen, Guan-Lin, and 陳冠霖. "Suitable For LTE/IEEE 802.11P of Aehicle Plane Inverted F Antenna Design." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/ae4nb9.

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碩士<br>景文科技大學<br>電子工程系電腦與通訊碩士班<br>104<br>The paper proposes to use an oval-fed plane Inverted-F antenna design which is fitted on the car roof of the shark fin antenna and compliant with LTE/IEEE 802.11p communications. The antenna is utilized the Baluns structure to make its current can be directed to a feed-line and ground-line, respectively and generate dual current path and resonant to ensure the antenna is more suitable for vehicle imperfect ground plane environment. The antenna design can be strengthened its resonant frequency is not easily affected by metal ground and effectively improve

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Lin, Tzu-Chian, and 林子謙. "A New Inverted-F Antenna Design with Shielding Function for WIFI Applications." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/4qg294.

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碩士<br>元智大學<br>電機工程學系乙組<br>107<br>This paper studies how to integrate a metallic enclosure (band pass shielding enclosure, BPSE) cover with band pass frequency selective surface with internal dual-band inverted-F antenna, not only it blocks radiated noise whether is inside or outside the box. but also doesn’t intensely affect the return loss and the radiation pattern, and increase the total gain from the antenna inside the box at the same time. At the beginning of the research, we will introduce the research motivation, the reference literature and the research objectives. Then we will explain

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Chen, Ping-chih, and 陳炳志. "Design of Inverted-F Antennas to be Embedded in Devices for Wireless." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/41704712163660650073.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>97<br>This thesis proposes two miniature antennas for WLAN (Wireless Local Area Network) and WWAN (Wireless Wide Area Network) applications, respectively. Both those antennas are with a compact size and good radiation performance so that they may be built in the portable devices to receive wireless signals for commercial applications. Firstly, a miniature planar inverted-F antenna for WLAN 2.4/5 GHz operation is presented. Small empty space and thin shorting pin of the proposed antenna are carefully designed to lower operating frequency and miniaturize antenna size i

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Nien, Wei-chen, and 粘為程. "Design of Dual-band Planar Inverted-F Antennas with a Parasitic Element." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/68408244186404304414.

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碩士<br>國立中央大學<br>電機工程研究所碩士在職專班<br>96<br>The design of dual-band planar inverted-F antennas with a parasitic element modifying impedance matching and broadening bandwidth are discussed in this thesis. The proposed antennas are designed for IEEE 802.11.a/b/g (WLAN), 802.16 (WiMAX) and Bluetooth covering 2400~2484 MHz /5150~5825 MHz. First of all, we estimated the distance of current path according to antenna theory at resonant frequencies, and determined appropriate position of fed point to meet impedance matching, then fed into radiation element through 50 Ohm microstrip line. We simulated the d

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Su, Chia-Tsin, and 蘇家信. "The Application of Planar Inverted F Dual-band Antenna to Mobile Communication." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/30310370386988313178.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>91<br>In this thesis, we discuss the basic configuration of Planar Inverted-F Antenna and perform the design of PIFA at GSM-900 and DCS-1800 bands by slotting the radiating element. Commercial electromagnetic simulation tool is employed here to analyze the effects of feed-point position, radiating-element height and ground-plane size on the bandwidth of antenna. Parasitic element and non-uniform ground-plane were proposed here to enhance the antenna bandwidth. The measured results agree well with numerical simulations.

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See, Chan H., Raed A. Abd-Alhameed, Hmeda I. Hraga, Peter S. Excell, Steven M. R. Jones, and James M. Noras. "A band-suppression UWB suspended planar antenna incorporating a slotted spiral resonator." 2012. http://hdl.handle.net/10454/9726.

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No<br>A novel miniaturized planar inverted F-L antenna assembly is considered for UWB radio operations. The antenna design utilizes the electromagnetic coupling between an air dielectric planar inverted-F antenna (PIFA) and a parasitic planar inverted-L (PIL) element, with broadband feeding from a rectangular plate. To improve the functionality of the channel, a simple notch filter has been introduced through a local modification to the broadband feed plate, this takes the form of a simple slotted rectangular spiral resonator which is etched directly onto the plate. This allows the proposed an

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游耀文. "A Design and Application of the Multi-Bands Planar Inverted F-type Antenna." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/27189001983762708352.

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碩士<br>明新科技大學<br>電子工程研究所<br>98<br>This thesis presents a specific antenna design which can be used in modern day Notebook, Phone, UMPC, AP, 3G … etc. designs. The antenna can be easily modified to be used in mobile telecommunication products. The design uses a combination of Monopole and PIFA (or known as an inverted F-type antenna) designs. It makes use of the smallest antenna volume, but achieving the best radiation performance for this design. Modifications and adjustments can be easily implemented to this antenna and still can be kept in a planar environment with using the smallest spacing

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