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Proceedings of the IEEE

Issue 7 • July 2012

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Displaying Results 1 - 25 of 33
  • [Front cover]

    Publication Year: 2012, Page(s): C1
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  • Proceedings of the IEEE publication information

    Publication Year: 2012, Page(s): C2
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  • Table of Contents

    Publication Year: 2012, Page(s):2093 - 2094
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  • Cognitive Dynamic Systems: Radar, Control, and Radio [Point of View]

    Publication Year: 2012, Page(s):2095 - 2103
    Cited by:  Papers (27)  |  Patents (1)
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    Freely Available from IEEE
  • Antennas in Wireless Communications [Scanning the Issue]

    Publication Year: 2012, Page(s):2104 - 2108
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  • Small Antennas in Wireless Communications

    Publication Year: 2012, Page(s):2109 - 2121
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1811 KB) | HTML iconHTML

    The objective of this paper is to provide the context, physical insight, and perspective on antennas in wireless communications. Although it does not mean to be comprehensive, the four key technologies related to small antenna designs to be reviewed and discussed, including multiband planar inverted-F antennas, broadband folded patch antennas, compact differentially fed antennas, and miniature cir... View full abstract»

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  • A Computationally Efficient Technique for Prototyping Planar Antennas and Printed Circuits for Wireless Applications

    Publication Year: 2012, Page(s):2122 - 2131
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1071 KB) | HTML iconHTML

    In this paper, we present a novel procedure for an efficient and accurate electromagnetic simulation of microstrip circuits and printed antennas etched in layered media. The proposed approach, based on a new algorithm referred to herein as the equivalent medium approach (EMA), is applied for a rapid design of the preliminary desired circuit prototype. The illustrated technique yields reliable resu... View full abstract»

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  • Nature-Inspired Optimization Techniques in Communication Antenna Designs

    Publication Year: 2012, Page(s):2132 - 2144
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2693 KB) | HTML iconHTML

    This paper summarizes the primary features inherent in current optimization methods typically applied to antenna designs and demonstrates their effectiveness by applying particle swarm optimization (PSO), a nature-inspired global optimization technique, to novel antenna design solutions in wireless communications. The concept of the PSO technique is briefly introduced and an outline of the importa... View full abstract»

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  • OTA Testing in Multipath of Antennas and Wireless Devices With MIMO and OFDM

    Publication Year: 2012, Page(s):2145 - 2157
    Cited by:  Papers (55)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1675 KB) | HTML iconHTML

    New over-the-air (OTA) measurement technology is wanted for quantitative testing of modern wireless devices for use in multipath. We show that the reverberation chamber emulates a rich isotropic multipath (RIMP), making it an extreme reference environment for testing of wireless devices. This thereby complements testing in anechoic chambers representing the opposite extreme reference environment: ... View full abstract»

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  • Printed Slot and Wire Antennas: A Review

    Publication Year: 2012, Page(s):2158 - 2168
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1419 KB) | HTML iconHTML

    The first part of this paper focuses on printed slot antennas. Starting with discussions of a narrow modified slot and a wide slot fed by a microstrip line, we proceed to a topic of generation of a circularly polarized beam. In addition, a rectangular slot antenna fed by a coplanar waveguide is described. The modification of a rectangular slot into an elliptical slot for enhancing the bandwidth is... View full abstract»

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  • Microstrip Patch Antennas—Basic Characteristics and Some Recent Advances

    Publication Year: 2012, Page(s):2169 - 2180
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1225 KB) | HTML iconHTML

    The basic geometry of a microstrip patch antenna (MPA) consists of a metallic patch printed on a grounded substrate. Three commonly used feeding methods are coaxial feed, stripline feed, and aperture-coupled feed. The patch antenna idea was first proposed in the early 1950s, but it was not until the late 1970s that this type of antenna attracted serious attention of the antenna community. The micr... View full abstract»

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  • Dielectric Resonator Antennas: From the Basic to the Aesthetic

    Publication Year: 2012, Page(s):2181 - 2193
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1372 KB) | HTML iconHTML Multimedia Media

    This paper explains the basic characteristics of dielectric resonator antennas (DRAs), with emphasis on the effect of the form factor on their resonance (operating) frequencies. It is followed by discussions on their recent developments in higher order mode, circularly polarized, dual function, and transparent designs over the last few years. The idea of using glass DRAs as decoration antennas is ... View full abstract»

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  • Leaky-Wave Antennas

    Publication Year: 2012, Page(s):2194 - 2206
    Cited by:  Papers (85)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1374 KB) | HTML iconHTML

    This paper gives a basic review and a summary of recent developments for leaky-wave antennas (LWAs). An LWA uses a guiding structure that supports wave propagation along the length of the structure, with the wave radiating or “leaking” continuously along the structure. Such antennas may be uniform, quasi-uniform, or periodic. After reviewing the basic physics and operating principles... View full abstract»

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  • Supporting and Enabling Circuits for Antenna Arrays in Wireless Communications

    Publication Year: 2012, Page(s):2207 - 2218
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2164 KB) | HTML iconHTML

    Antenna arrays have been demonstrated as a very promising technique for high-speed wireless networks, and are anticipated to be indispensable components in future wireless communication systems. This review paper presents an overview of the circuit techniques on combining signals from different receive array elements as well as splitting signals to different transmit array elements with emphasis o... View full abstract»

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  • Substrate-Integrated Millimeter-Wave and Terahertz Antenna Technology

    Publication Year: 2012, Page(s):2219 - 2232
    Cited by:  Papers (40)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1790 KB) | HTML iconHTML

    Significant advances in the development of millimeter-wave and terahertz (30-10 000 GHz) technologies have been made to cope with the increasing interest in this still not fully explored electromagnetic spectrum. The nature of electromagnetic waves over this frequency range is well suited for the development of high-resolution imaging applications, molecular-sensitive spectroscopic devices, and ul... View full abstract»

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  • Smart Antennas for Advanced Communication Systems

    Publication Year: 2012, Page(s):2233 - 2249
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2972 KB) | HTML iconHTML

    Blooming in data-communication applications is beyond all expectations. Smart antennas as now regarded as one of enabling technologies for next-generation wireless communication systems with its promised performance on enhancing network capacity. This paper presents a detailed analysis of the classes of smart antenna systems (SASs), including adaptive arrays, multibeam multiple-input-multiple-outp... View full abstract»

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  • Reconfigurable Antennas for Wireless and Space Applications

    Publication Year: 2012, Page(s):2250 - 2261
    Cited by:  Papers (120)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1528 KB) | HTML iconHTML

    Reconfigurable antennas, with the ability to radiate more than one pattern at different frequencies and polarizations, are necessary in modern telecommunication systems. The requirements for increased functionality (e.g., direction finding, beam steering, radar, control, and command) within a confined volume place a greater burden on today's transmitting and receiving systems. Reconfigurable anten... View full abstract»

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  • Antenna Requirements for Software Defined and Cognitive Radios

    Publication Year: 2012, Page(s):2262 - 2270
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (615 KB) | HTML iconHTML

    Antenna requirements for software defined radio (SDR) and cognitive radio (CR) systems are reviewed and the resulting challenges are discussed. Both concepts imply capabilities for operation over very wide bandwidths, of the order of one decade in some cases. This then becomes the main challenge for antenna designers. However, as the concepts evolve, some systems will work over limited bandwidths ... View full abstract»

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  • Metamaterial-Based Antennas

    Publication Year: 2012, Page(s):2271 - 2285
    Cited by:  Papers (70)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1863 KB) | HTML iconHTML

    Metamaterials are materials typically engineered with novel or artificial structures to produce electromagnetic properties that are unusual or difficult to obtain in nature. Because of their promise to provide engineerable permittivity, permeability, and index of refraction, metamaterials have drawn broad interest and have led to possible utilization in many electromagnetic applications from the m... View full abstract»

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  • Antennas in Cellular Phones for Mobile Communications

    Publication Year: 2012, Page(s):2286 - 2296
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (965 KB) | HTML iconHTML

    The mobile industry has experienced a dramatic growth; it evolves from analog to digital 2G (GSM), then to high date rate cellular wireless communication such as 3G (WCDMA), and further to packet optimized 3.5G (HSPA) and 4G (LTE and LTE advanced) systems. Today, the main design challenges of mobile phone antenna are the requirements of small size, built-in structure, and multisystems in multiband... View full abstract»

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  • The Magnetoelectric Dipole—A Wideband Antenna for Base Stations in Mobile Communications

    Publication Year: 2012, Page(s):2297 - 2307
    Cited by:  Papers (54)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1570 KB) | HTML iconHTML

    In this paper, stringent requirements imposed on the design of base station antennas for mobile communications are summarized. Conventional techniques for implementing base station antennas are reviewed. The complementary antenna concept of combining an electric dipole with a magnetic dipole is reconsidered. Recently, this kind of antenna has been commonly called a “Huygen's source.”... View full abstract»

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  • UWB Antennas for Communication Systems

    Publication Year: 2012, Page(s):2308 - 2321
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (978 KB) | HTML iconHTML

    Since the U.S. Federal Communications Commission (FCC) opened the spectrum from 3.1 to 10.6 GHz for unlicensed radio applications with an EIRP of up to 41.3 dBm/MHz, numerous papers have been published on ultrawideband (UWB) antennas. Often the goal in these publications is to present an antenna, which has a satisfactory input reflection coefficient and a reasonable, constant radiation diagram ver... View full abstract»

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  • Antennas for WiFi Connectivity

    Publication Year: 2012, Page(s):2322 - 2329
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    Wireless fidelity (WiFi) is a superset of the IEEE 802.11 standards for communications over several tens of meters. A WiFi device connects to the network via an access point. The design of commercial WiFi antennas is a compromise between cost, size, manufacturability, and performance. This paper describes the design considerations of antenna from a WiFi system perspective with state-of-the-art sol... View full abstract»

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  • Design of Antennas for UHF RFID Tags

    Publication Year: 2012, Page(s):2330 - 2340
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (875 KB) | HTML iconHTML

    This paper is mainly dedicated to the design of radio-frequency identification (RFID) tags, particularly the antennas that allow the tag to be fed, communicate, and exchange data with the reader. Good performance tags require optimized antenna that take into account numerous constraints as well as the environment of the application under consideration. Both conventional tags and robust tags are di... View full abstract»

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  • Antennas for Digital Television Receivers in Mobile Terminals

    Publication Year: 2012, Page(s):2341 - 2348
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (689 KB) | HTML iconHTML

    The incorporation of new services in handheld devices, such as the Digital Video Broadcast-Handheld (DVB-H) operating at the lower ultrahigh-frequency (UHF) band poses a challenge for antenna designers. Wideband small antennas or electrically tunable narrowband small antennas are needed to fulfil the performance requirement. It is well known that below 900 MHz the operation of embedded mobile term... View full abstract»

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North Carolina State University