Results 281 to 290 of about 24,215 (336)

Dielectric resonator antenna

2015 Conference on Microwave Techniques (COMITE), 2015
This article is focused on using a dielectric resonator as a radiating element of a antenna with the aim to reduce dimensions of such antennas compared to classical microstrip antennas. Such antenna was build and its parameters tested in frequency band of 2.9 to 3.1 GHz.
Petr Kopecky, Vadim Zavodny
openaire   +1 more source

Wideband dielectric resonator antenna

Microwave and Optical Technology Letters, 2005
AbstractThis paper presents a new wideband dielectric resonator (DR) antenna. To enhance the bandwidth, two layers of stacked resonators having the same rotational axis of symmetry are used. At the bottom layer, a smaller cylindrical DR is placed concentrically inside a large annular‐ring DR, whereas at the top layer, there is only one cylindrical DR ...
Yu‐Feng Ruan   +2 more
openaire   +1 more source

Adaptive Dielectric Resonator Antenna

2007 Loughborough Antennas and Propagation Conference, 2007
A new class of hemispherical dielectric resonator antenna using mixed dielectric with beam agility is presented. The design of the antenna was optimized by extensive numerical simulations with the HFSS, Ansoft package. The antenna resonates at 5.6 GHz, with a diameter of 26 mm and Sn of -15 dB.
H. Fayad, P. Record
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Bidirectional dielectric resonator antenna

2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015
A bidirectional dielectric resonator antenna (DRA) is investigated. The rectangular DRA is used, which resonates in its TE 215 y mode. As a demonstration, it is designed to operate at 5.80 GHz for WLAN applications. Its reflection coefficient, radiation pattern, and antenna gain of the bidirectional DRA were simulated and measured.
Li Ying Feng, Kwok Wa Leung
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Optical dielectric resonator antenna

2012 9th International Conference on Communications (COMM), 2012
In this paper we propose that a dielectric dot on the top of a ground plane could act as an antenna in optical frequency range. We investigate its electromagnetic properties numerically and observe that its behaviors are similar to dielectric resonator antenna in radio frequency.
Abhinav Bhardwaj, V. Dinesh Kumar
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Supershaped dielectric resonator antennas

2009 IEEE Antennas and Propagation Society International Symposium, 2009
A family of dielectric resonator antennas, the supershaped DRAs, has been introduced in this communication. These DRAs exhibit wideband matching characteristics and broadside radiation. The cross section of the supershaped DRAs was described by means of a simple analytical expression depending on a set of six real parameters.
M. Simeoni   +3 more
openaire   +2 more sources

Resonant dielectric antennas

2004 14th International Crimean Conference "Microwave and Telecommunication Technology" (IEEE Cat. No.04EX843), 2004
The problem of scattering electromagnetic waves from a radiating aperture by a system of high-Q dielectric resonators (DR) in free space is considered. General expressions are presented for calculating both the amplitudes of coupled oscillations and also the scattered field in the wave zone of the resonator system.
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A dual‐frequency dielectric resonator antenna

Microwave and Optical Technology Letters, 2003
AbstractA dual‐frequency cylindrical dielectric resonator antenna is presented. This paper proposes a configuration in which the shape and volume of the radiating structure remain unchanged. The behaviour of this antenna after altering some of its attributes is investigated. © 2003 Wiley Periodicals, Inc.
Nannini, C.   +3 more
openaire   +2 more sources

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