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Antennas and Propagation in Wireless Communications (APWC), 2011 IEEE-APS Topical Conference on

Date 12-16 Sept. 2011

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Displaying Results 1 - 25 of 110
  • [Front cover]

    Publication Year: 2011 , Page(s): c1
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  • [Copyright notice]

    Publication Year: 2011 , Page(s): 1
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  • Committee

    Publication Year: 2011 , Page(s): 2 - 3
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  • Final program

    Publication Year: 2011 , Page(s): 1 - 2
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  • Winner of the ICEAA - IEEE APWC 2011 Award

    Publication Year: 2011 , Page(s): 1 - 2
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  • ICEAA - APWC 2012

    Publication Year: 2011 , Page(s): 1
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  • Table of contents

    Publication Year: 2011 , Page(s): 1 - 6
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  • A novel CPW-Fed rectangular wide slot antenna for UWB applications

    Publication Year: 2011 , Page(s): 19 - 22
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1442 KB) |  | HTML iconHTML  

    In this paper an innovative rectangular wide slot UWB antenna is presented. The introduction of two semicircular slots in the ground plane blocks the currents at high frequencies to produce a consistent radiation pattern in the broadside direction. View full abstract»

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  • Factorization of the antenna correlation coefficient for improved performance assessment

    Publication Year: 2011 , Page(s): 23 - 26
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (736 KB) |  | HTML iconHTML  

    The correlation coefficient between the received signals from a pair of antennas is a parameter which provides information about the performance of an antenna pair in diversity and MIMO applications. In case the correlation coefficient is low, a deeper assessment of the antenna performance can be made by investigating the cause for the low correlation coefficient. A separation of the correlation c... View full abstract»

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  • In-depth examination of a 3-layer phase shifting surface (PSS) and its use in a thin Fresnel lens design

    Publication Year: 2011 , Page(s): 31 - 34
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1178 KB) |  | HTML iconHTML  

    This paper presents a detailed analysis of a 3-layer phase shifting surface (PSS) intended for the design of a thin microwave Fresnel lens at Ka band. In particular, local electric fields and an equivalent circuit model of the PSS are presented. The effects of oblique incidence on the surface of the Fresnel lens emanating from the feed antenna are also studied. Measurement results are presented an... View full abstract»

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  • On the importance of observation angles in automotive antenna measurements

    Publication Year: 2011 , Page(s): 35 - 38
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (736 KB) |  | HTML iconHTML  

    During the development of automotive antennas the vehicular antennas are usually measured several times. Quite often the measurement campaigns are carried out on different test sites. Here it is quite important to take into account the differences in observation angles in order to avoid an error when comparing results from different test sites. This paper gives an overview of the potential error t... View full abstract»

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  • Suspended patch antenna with Z-type Strip Plate as broadband impedance transformer

    Publication Year: 2011 , Page(s): 47 - 49
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (744 KB) |  | HTML iconHTML  

    A wideband Suspended Plane Antenna (SPA) design is proposed. The design uses a suspended Z-type Strip Plate (ZSP) that serves as a radiator and impedance matching part, a thin air gap between the feed connector, and a radiator plane that serves as broadband impedance matching and main radiator part. The resulting impedance bandwidth is from 1.6 to 3 GHz. The horizontal and vertical radiating patte... View full abstract»

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  • Synthesis and analysis of a monopole radiator for UWB Body Area Networks

    Publication Year: 2011 , Page(s): 78 - 81
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1154 KB) |  | HTML iconHTML  

    In this paper a spline-shaped monopole radiator for utilization in Ultrawideband (UWB) Wireless Body Area Networks (WBANs) is presented. The antenna exhibits a good impedance matching and stable radiation patterns in the lower UWB band from 3.1 to 4.8 GHz. Moreover, it shows distortion-less properties when used in a chest-to-waist communication link. In order to assess the effectiveness of the pro... View full abstract»

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  • 2×2 Switch Matrix for a prototype WiMAX Relay Station

    Publication Year: 2011 , Page(s): 90 - 93
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1195 KB) |  | HTML iconHTML  

    This research presents a 2×2 Switch Matrix based on PIN diode switching elements custom design. It operates at the 3.3-3.8 GHz frequency band and it is integrated in the RF Front End of a prototype WiMAX Relay Station. It provides low insertion loss and high isolation and implements Time Transmit & Receive, alternatively Simultaneous Transmit & Receive operation in Time Domain Duple... View full abstract»

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  • WSN-based early alert system for preventing wildlife-vehicle collisions in Alps regions

    Publication Year: 2011 , Page(s): 106 - 109
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (867 KB) |  | HTML iconHTML  

    In this paper a preliminary study of applying a WSN-based system for the prevention of road incident because of wildlife road crossing is presented. The proposed system is composed by a network of sensors and actuators in order to detect wildlife approaching the road and to warn the driver in real-time by means of light signal devices. The nodes of the network are installed on the road sides and w... View full abstract»

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  • Improving link quality of UWB communication links by means of PSWF-Basis persuit denoising

    Publication Year: 2011 , Page(s): 126 - 129
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (613 KB) |  | HTML iconHTML  

    Wireless Body Area Networks (WBANs) utilising Ultra Wideband communication channels often use a combination of thin sensor nodes and a heavy base node. The sensor nodes need to be as simple and low power as possible. This makes it difficult to maintain a good quality link. In this paper additional post processing steps at the base node are proposed in order to overcome these issues. A basis persui... View full abstract»

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  • Fast design of UWB antennas using electromagnetic models

    Publication Year: 2011 , Page(s): 140 - 143
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (741 KB) |  | HTML iconHTML  

    Computationally efficient simulation-driven design optimization of ultrawideband (UWB) antennas is presented. We focus on two methodologies, both exploiting coarse-discretization EM simulations, so-called low-fidelity model. The first approach, shape-preserving response prediction (SPRP) allows us to estimate the output of the high-fidelity EM antenna simulation, using the properly selected set of... View full abstract»

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  • Enhancement of the frequency characteristics of a decoupling and matching feeding network for a MIMO antenna

    Publication Year: 2011 , Page(s): 151 - 154
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (738 KB) |  | HTML iconHTML  

    In order to enhance the bandwidth of the radiation efficiency of a MIMO antenna using a decoupling and matching feeding network, a new design formula of the DMFN elements which can match the antenna conductance to the terminal loads with different value. The unitary matrix in the design formula of the DMFN, which can equalize the bandwidth of each feeding terminal has been derived. It has been als... View full abstract»

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  • Measurements of beyond horizon propagation loss

    Publication Year: 2011 , Page(s): 159 - 162
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (785 KB) |  | HTML iconHTML  

    The behavior of the path loss between two base stations has been investigated via measurements using one fixed transmitter and a helicopter-borne receiver. This has allowed the gathering of data for a range of distances and antenna heights, including beyond horizon conditions and antennas below and above the clutter. The data has been compared with predictions using two different path loss models ... View full abstract»

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  • BeToL and BeFoL antennas

    Publication Year: 2011 , Page(s): 171 - 174
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (671 KB) |  | HTML iconHTML  

    An antenna composed of two bent conducting strips (leaves) above a conducting ground plane, designated as the BeToL, is investigated for radiation of a unidirectional beam in either the positive x-space direction or the negative x-space direction. Based on this investigation, an antenna composed of four bent conducting strips above a conducting ground plane, designated as the BeFoL, is designed su... View full abstract»

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  • Ground plane effects and measurements of portable planar broadband antennas

    Publication Year: 2011 , Page(s): 179 - 182
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1022 KB) |  | HTML iconHTML  

    This paper deals with two of the most important and difficult aspects of portable planar broadband antennas: the ground plane effects and measurements. To minimize the ground plane effects, optimized slots are created on the ground plane to limit the current flow hence the ground plane effects, which is demonstrated to be a simple but effective approach. For the antenna measurement, our focus is o... View full abstract»

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  • A dual-band circularly-polarised leaky-wave antenna for mobile Ka-band satellite communications

    Publication Year: 2011 , Page(s): 203 - 206
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1380 KB) |  | HTML iconHTML  

    This paper describes the design and testing of a circularly polarised dual-band leaky-wave antenna panel operating at 20 and 30 GHz. The compact panel fits into a low-profile user-terminal antenna concept intended for mobile bidirectional Ka-band satellite communications. As a proof-of-principle, a dual-band partially reflective surface (PRS) with a physical aperture of 60 mm by 60 mm was manufact... View full abstract»

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  • Three - dimensional radio coverage in urban environments using Physical Optics and Physical Theory of Diffraction

    Publication Year: 2011 , Page(s): 207 - 210
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1231 KB) |  | HTML iconHTML  

    An outline is provided of the radio coverage analysis in three-dimensional (3-D) outdoor urban areas for GSM frequencies (900-1800 MHz), through simulation of the propagation phenomena. The calculation of relevant contributions is achieved, taking advantage of the Physical Optics theory, Image theory and Ufimtsev's Physical Theory of Diffraction with application of Mitzner's Incremental Length Dif... View full abstract»

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  • A folded film antenna for digital terrestrial television reception

    Publication Year: 2011 , Page(s): 239 - 242
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (832 KB) |  | HTML iconHTML  

    Recently, many countries are switching their terrestrial television broadcasting from analog to digital and the demand of television reception increases for mobile devices. The antenna for this purpose is required to be compact, light-weight, and operate at the broadband covering the broadcasting frequencies. In this paper, we propose a compact antenna for digital terrestrial television reception.... View full abstract»

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  • Modeling the radiation characteristics of plane waveguide array using the variational approach

    Publication Year: 2011 , Page(s): 247 - 250
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (703 KB) |  | HTML iconHTML  

    The synthesis problem of the waveguide array according to the prescribed amplitude radiation pattern is considered. The mutual coupling of the separate elements of array is taken into account in the process of solution of a direct problem (analysis problem). Variational statement of the synthesis problem and application of the aperture orthogonal polynomials (AOP) method, are considered as alterna... View full abstract»

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