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2000 IEEE-APS Conference on Antennas and Propagation for Wireless Communications (Cat. No.00EX380)

6-8 Nov. 2000

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  • 2000 IEEE-APS Conference on Antennas and Propagation for Wireless Communications (Cat. No.00EX380)

    Publication Year: 2000
    Request permission for commercial reuse | PDF file iconPDF (471 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 2000, Page(s):195 - 196
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    Freely Available from IEEE
  • Characterisation and optimisation of a coplanar waveguide fed logarithmic spiral antenna

    Publication Year: 2000, Page(s):25 - 28
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A cavity backed coplanar waveguide (CPW) to coplanar strip (CPS)-fed logarithmic uniplanar spiral antenna, which covers a 9 to 1 bandwidth with a return loss better than 10 dB from 0.4 to 3.8 GHz is presented. A wideband balun is used to accomplish the transition from the unbalanced CPW transmission line to the balanced CPS transmission line. The balun exhibits an insertion loss of less than 3 dB ... View full abstract»

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  • Dual use of slotted waveguide array antennas

    Publication Year: 2000, Page(s):149 - 152
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    Slot antennas have been widely used for military and defense applications for decades. This antenna type offers a compact and attractive solution in many cases. The use of the waveguide technique gives a low loss design and will often result in a well defined performance. Slot models and design tools are mature and present an opportunity to do most of the design work theoretically without tedious ... View full abstract»

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  • Design of a passive element array

    Publication Year: 2000, Page(s):125 - 128
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    We introduce a procedure for designing an antenna system based on a single dipole element surrounded by an array of scattering elements. The goal is to achieve a desired pattern by astute placement of the elements in a fixed grid. This represents a departure from the traditional approach to directive arrays in which the current in each element is controlled. The problem is similar to the design of... View full abstract»

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  • Analysis of integrated inverted-F antennas for Bluetooth applications

    Publication Year: 2000, Page(s):21 - 24
    Cited by:  Papers (56)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    An integrated planar inverted-F antenna (PIFA) is proposed and analyzed. The antenna is printed on the RF printed circuit board of a wireless communication device. Numerical analysis data shows that such an antenna can be utilized with as small as 22 mm by 5 mm by 1 mm of volume. The volume occupancy can be further reduced by adjusting various different antenna parameters. Such guidelines have als... View full abstract»

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  • Experiments in modeling the parameters of chaos equation models for mobile radio channels

    Publication Year: 2000, Page(s):103 - 106
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Recent works introduced models based on chaos equations, aiming to simulate transmission processes over mobile radio digital channels at the level of the post detection error time series, and to reproduce their non renewal behaviors. Bursts and clusters of errors are generated by these models exploiting the correlation between successive points sampled from the trajectories of suitable strange att... View full abstract»

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  • Design and modeling of proximity coupled patch antenna

    Publication Year: 2000, Page(s):43 - 46
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    In this paper, the design, modeling, and experimental validation of the model of a proximity coupled or electromagnetically coupled (EMC) linearly polarized patch antenna are presented. Guidelines for developing a simple model, and design of the EMC patch antennas are outlined. This work can be used for modeling and accurate design of the proximity coupled patch antenna without resorting to time c... View full abstract»

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  • Wide-band folding horn type microwave antennas

    Publication Year: 2000, Page(s):143 - 146
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    The authors illustrate the idea of a folding horn type antenna. The main difference from a traditional horn is its multipoint excitation. In ordinary horns the increase of aperture dimensions for a given length of the horn leads to undesirable quadratic phase variations of radiating field in its aperture. To avoid them a large length of the horn is essential. In a folding horn the necessary in-pha... View full abstract»

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  • An empirical study of radio propagation aboard naval vessels

    Publication Year: 2000, Page(s):157 - 160
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    Most existing studies of indoor radio wave propagation have addressed operations in common commercial environments such as warehouses, office buildings and factories. These studies show typical path loss gradients ranging from 3-5, and rms delay spreads ranging from 10-40 nanoseconds. This paper reports the results of research conducted to characterize microwave radio propagation aboard Navy ships... View full abstract»

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  • On the Doppler power spectrum at the mobile unit with a directional antenna

    Publication Year: 2000, Page(s):111 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The effects of directional antennas at the mobile unit on the Doppler power spectrum are investigated in this paper. The Doppler power spectral density (psd) functions at the mobile unit with a directional antenna employed at the mobile have been derived and presented. Two kinds of different antenna configurations at the base station are taken into our consideration. Namely, an omnidirectional ant... View full abstract»

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  • An adaptive array for multi-carrier transmission

    Publication Year: 2000, Page(s):167 - 168
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    The authors have proposed a novel algorithm for an adaptive array that is suitable for the multi-carrier transmission. It has already been confirmed that multi-carrier waves can be suppressed by the adaptive array in the multi-carrier transmission system (Fujimoto et al.). In this paper it is shown through computer simulation that not only the multipath waves but also the co-channel interference w... View full abstract»

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  • Optically driven CPW-fed slot antenna for wireless communications

    Publication Year: 2000, Page(s):121 - 124
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    The characteristics of a micromachined CPW-fed slot antenna array driven by converting optical power into microwave power using RF photodetectors are presented. The CPW line is connected to the active surface of the photodetector, from which the microwave power propagates to feed the radiating slot. The photodetector is fed via an optical fiber from beneath. The output microwave frequency from the... View full abstract»

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  • Wide band meander line antenna for wireless communication systems

    Publication Year: 2000, Page(s):17 - 20
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Printed antennas are becoming one of the most popular designs in personal wireless communications systems. In this paper, the design of a novel tapered meander line antenna is presented. The design analysis and characterization of the antenna is performed using the finite difference time domain technique and experimental verifications are performed to ensure the effectiveness of the numerical mode... View full abstract»

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  • Improved method for estimating angle of arrival in multipath conditions using the `MUSIC' algorithm

    Publication Year: 2000, Page(s):99 - 102
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    The paper presents an improved method of estimating the angle of arrival (AOA) of a signal from a cellular radio mobile handset using a uniform linear antenna array at the base station receiver. The method is based on the `MUSIC' algorithm. In multipath fading conditions this method can provide a biased estimate of angle of arrival due to the effect of the scattered signals. The new method incorpo... View full abstract»

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  • Effects of lossy dielectric material on microstrip antennas

    Publication Year: 2000, Page(s):39 - 42
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    Rapid developments in the wireless communication industry require the next generation of portable antenna designs to be internal. While these internal designs will be more rugged and aesthetically pleasing than the existing external antennas, the possibility that the external plastic of the chassis will be lossy to achieve shielding will change an internal antenna's operating characteristics subst... View full abstract»

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  • Cylindrical stacked patch antennas for wireless communication

    Publication Year: 2000, Page(s):9 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    The stacked cylindrical patch antenna proposed in this paper overcomes the bandwidth limitations of the single patch version. The analysis of the antenna was done by using the method of moments in the spectral domain. The GIDMULT algorithm for the calculation of the Green's functions of a general cylindrical multilayer structure in the spectral domain was incorporated into a moment method program,... View full abstract»

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  • Multibeam antenna terminal for wireless local area network

    Publication Year: 2000, Page(s):141 - 142
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    The paper considers a new millimeter wave multibeam mirror antenna for use as the base station terminal of a high rate wireless local area network View full abstract»

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  • Characterization of radio wave propagation in tunnels for microcellular communications

    Publication Year: 2000, Page(s):91 - 94
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    This work presents model-based characterization of wideband radio wave propagation in straight rectangular tunnel. The propagation characteristics are presented in time and frequency domains for both vertical and horizontal polarizations. Narrowband and wideband received power results are presented. The frequency of occurrence of fast fading depends on the distance between transmitter and receiver... View full abstract»

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  • Control devices based on a periodic sequence of the metal-dielectric scatterers

    Publication Year: 2000, Page(s):191 - 194
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    Arbitrary-mode diffraction problems are solved analytically for a periodic sequence of a broad class of the complex metal-dielectric scatterers in the single mode regime. Such a control system as an absorbing cover, ladder-type mode and frequency filter, frequency and spatial discriminator are investigated. The peculiarities of the wave processes such as super-Q resonances, generalized Maluzhinetz... View full abstract»

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  • A shooting and bouncing beams method for fast 3D indoor propagation channel characterization

    Publication Year: 2000, Page(s):73 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    A shooting and bouncing beams (SBB) method is presented, for indoor propagation channel modeling. The advantage of the method comes from the fact that the number of beams to be launched is smaller than the number of rays in ray-tracing or ray-launching methods. The SBB method is particularly well suited for the millimeter wave range. Its application is illustrated by radio coverage simulations in ... View full abstract»

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  • A U-shaped inverted F microstrip patch antenna for portable terminals

    Publication Year: 2000, Page(s):31 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The intrinsic disadvantages of patch antennas such as narrow bandwidth and nonuniform coverage are the reasons why this class of antenna has not been seriously considered for hand-held application. In this paper we present a new design for a U-shaped patch antenna that has a reasonable bandwidth, adequate coverage, and less interaction with the head and the hand of the user. Based on our earlier i... View full abstract»

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  • RF propagation on ex-USS Shadwell

    Publication Year: 2000, Page(s):153 - 156
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    The authors discuss the RFI environment on a warship within the Damage control-automation for reduced planning program. RF propagation measurements are carried out to study the ship environment effects on radio communication systems View full abstract»

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  • Compact dielectric resonator antenna for PCS mobile handsets

    Publication Year: 2000, Page(s):1 - 4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In response to increasing demand for compact efficient antennas, various cylindrical geometries of dielectric resonator antennas (DRA) are investigated in this paper. These DRA geometries offer significant reduction in volume, making them potential candidates for use in compact applications such as mobile communication handset. Approximate theory of PMC walls developed for predicting resonant radi... View full abstract»

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  • Fractal loop elements in phased arrays for wireless communication: design, analysis, and measurement

    Publication Year: 2000, Page(s):129 - 132
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    Fractal geometries can be utilized to design miniaturized resonant loop antennas that can increase the flexibility of the design of planar phased arrays. Smaller fractal loop elements lead to a more optimal synthesis of phased arrays that can be incorporated into portable wireless devices. Their planar structures also allows for easy fabrication View full abstract»

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