2009 Index IEEE Antennas and Wireless Propagation Letters Vol. 8

This index covers all technical items - papers, correspondence, reviews, etc. - that appeared in this periodical during the year, and items from previous years that were commented upon or corrected in this year. Departments and other items may also be covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author\u27s name. The primary entry includes the coauthors\u27 names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination. The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author\u27s name, the publication abbreviation, month, and year, and inclusive pages. Note that the item title is found only under the primary entry in the Author Index

2008 Index IEEE Transactions on Control Systems Technology Vol. 16

This index covers all technical items - papers, correspondence, reviews, etc. - that appeared in this periodical during the year, and items from previous years that were commented upon or corrected in this year. Departments and other items may also be covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author\u27s name. The primary entry includes the coauthors\u27 names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination. The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author\u27s name, the publication abbreviation, month, and year, and inclusive pages. Note that the item title is found only under the primary entry in the Author Index

Microwave Antennas Suggested for Biomedical Implantation

In the twenty-first century, there is an enormous development in various areas: microwave sensors have played an important role in medical devices, because of population growth and public awareness of the health of medical devices, they have become an ever-increasing technology. Microwave antenna sensors can be used to monitor human body temperature, implantable defibrillators, pacemakers, continuous glucose monitoring, heart failure detection, and so on. Antennas are also used as flexible sensors to monitor physiological parameters. Therefore, microwave sensors are used for wireless communication in various biomedical applications. The design of such antennas has gained considerable attention for dealing with issues such as miniaturization, biocompatibility, patient safety, improvement in communication quality, etc. The objective of this paper is to prove an overview of the requirements, design steps, and testing of a microwave antenna used in biomedical implantation. In this chapter, various antennas used in medical applications are described in detail. Also, antenna designing and testing requirements are discussed

A Study on Conformal Antenna Solutions for Cube Satellites

This master\u27s thesis presents a study on a slot and microstrip patch as the two main types of antennas for the use on Cube Satellite (CubeSat). A study on the fundamentals of the slot antenna is researched and a circularly polarized (CPd) cavity-backed cross slot antenna and its two-element array for the CubeSat are designed and fabricated. Fabricated two-element phased array cross slot antenna has higher radiation gain and steered radiation pattern compared to the fabricated single cross slot antenna. A CPd square microstrip patch antenna for the application of the CubeSat is designed and compared with a commercial CPd microstrip patch antenna. It is concluded that our designed microstrip patch antenna has a better performance compared to the commercial one. The last part of the research focuses on the design of miniaturized slot antennas for the CubeSat working at an ultra high frequency (UHF) band. The different techniques and challenges that we face through the miniaturization are articulated throughout the research and expanded upon in this thesis. The antenna simulations were performed using Ansoft High Frequency System Simula- tor (HFSS) and the final designs for the CPd cavity-backed single and two-element cross slot antennas and CPd microstrip patch antenna were fabricated using a circuit board milling machine. These were then measured inside an anechoic chamber for the radiation pattern. Both antennas had high radiation gain and good CPd radiation quality

Review of Low Profile Substrate Integrated Waveguide Cavity Backed Antennas

Low profile cavity backed antennas (CBA) based on substrate integrated waveguide (SIW) technology presented in published papers have been reviewed in this paper. Their operating mechanisms have been discussed and methods for improving the performance, such as bandwidth enhancement, size reduction, and gain improvement, have been presented. These novel antennas retain the advantage of conventional metallic cavity backed antenna, including high gain, high front-to-back ratio, and low cross polarization level, and also keep the advantages of planar antenna including low profile, light weight, low fabrication cost, and easy integration with planar circuit

Käsipuhelinantennien miniatyrisointimenetelmät

Tässä diplomityössä tutkittiin pienten antennien miniatyrisointimenetelmiä. Tärkeimmät käsipuhelinantenneille asetetut vaatimukset ovat laajakaistaisuus, suuri säteilyhyötysuhde sekä pieni koko. Pienentämisen ongelma on näiden vaatimusten keskinäinen suhde; yhden ominaisuuden parantaminen tapahtuu aina jonkin toisen kustannuksella. Työssä havaittiin, että eri miniatyrisointimenetelmiä soveltamalla voidaan vaikuttaa em. ominaisuuksien jakautumiseen. Aluksi työssä käytiin lyhyesti läpi pienten antennien teoriaa sekä selvitettiin matkapuhelinantenneille asetettuja vaatimuksia. Seuraavaksi esiteltiin muutaman käsipuhelimen sisäiseksi antenniksi soveltuvan antennityypin ominaisuuksia. Käsitellyt antennityypit olivat dielektrinen resonaattoriantenni ja PIFA-antenni (mikroliuska-antenni). Tämän jälkeen tutkittiin eri miniatyrisointitekniikoita ja niiden soveltamista edellä esiteltyihin antennityyppeihin. Useita antenneja tutkittiin kokeellisesti. Tavallisten impedanssi- ja säteilyominaisuuksien lisäksi mitattiin prototyyppien säteilyhyötysuhteet. Miniatyrisointi dielektrisesti kuormittamalla todettiin tehokkaaksi dielektristen resonaattoriantennien yhteydessä, mutta työssä toteutetulle erittäin ohuelle mikroliuska-antennille, jossa on enemmän metalliosia, tämä menetelmä ei sovi. Korkeapermittiivisen materiaalin lisääminen tällaiseen rakenteeseen heikensi antennin säteilyominaisuuksia aiheuttaen metallihäviöiden suhteellisen osuuden voimakkaan kasvun. Tämä johti hyvin huonoon hyötysuhteeseen. PlFA-antennin resistiivinen kuormittaminen lisäsi huomattavasti kaistanleveyttä, mutta tämä tapahtui selvästi säteilytehokkuuden kustannuksella. Muut PIFA-antenneille sovelletut menetelmät huomattiin kokonaisvaikutuksiltaan melko yhdenvertaisiksi. Reaktiivisesti kuormittamalla saavutettiin korkea säteilyhyötysuhde, mutta antennin koon pienentyessä menetettiin samalla kaistanleveyttä. Sama ilmiö havaittiin hidasaaltorakenteissa