Results 261 to 270 of about 1,262,730 (300)

Quad Band Compact Size Trapezoidal Pifa Antenna

Journal of Electromagnetic Waves and Applications, 2007
New shapes of slot loaded trapezoidal PIFA antenna are investigated in this paper. Double and triple slots are inserted to reach tri and Quad band operations, respectively. The antennas resonance frequencies are selected in the s-band and c-band to be compatible with commercial wireless communication applications.
H. Elsadek, D. Nashaat
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A compact size broadband dipole type antenna

2017 Sixth Asia-Pacific Conference on Antennas and Propagation (APCAP), 2017
In this paper, a broad bandwidth printed dipole type antenna operating at 240–350 MHz is proposed. To achieve wide bandwidth and miniaturization, eight rectangle slots and four arrow slots are symmetrically etched on the metal of the proposed antenna.
Wen-xin Yan, Jian-ying Li, Du-juan Wei
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Design of compact size tapered slot antenna

Microwave and Optical Technology Letters, 2008
AbstractA compact size linearly tapered slot antenna is investigated. The new designed antenna is with wideband and wide beamwidth. Measured results show that the half‐power beamwidth (HPBW) of the compact size antenna achieves 120° at the operation frequency. Over the whole frequency band, the HPBW is wider than 100°.
Xu, Zh., Liu, Q.Zh., Zhang, Ch.F., Yuan, Y., Li, J.Y.   +4 more
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Compact size coupled line CRLH unit cell

IEEE Middle East Conference on Antennas and Propagation (MECAP 2010), 2010
This paper presents variant designs of coupled line composite right/left handed (CRLH) unit cell. The proposed structures provide around 50% reduction in size without sacrificing the performance. EM simulations and experimental measurements are in a very good agreement.
Ahmed D. Alwakil, Antony N. Ezzat, Amr M. E. Safwat   +2 more
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Compact size dual-band loop array antenna

Proceedings of the International Conference & Workshop on Emerging Trends in Technology - ICWET '11, 2011
This paper describes alternate way to generate dual band using loop within loop technique to confine the size of array. Simulated results show that antenna is tuned to 400 MHz with return loss of -13 dB and at 615.5 MHz with return loss of -31.6 dB. Lower band is of 10 MHz and upper one is of 14 MHz Antenna is fed with long feed line so is compatible ...
Malhar Lakdawala, Kunal Jain, Hardik Tolia   +2 more
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A compact size 12-Port Combiner/Splitter

WAMICON 2013, 2013
A compact size 12-Port Power Combiner/Splitter is designed and fabricated for 2.45 GHz operation. The combiner provides measured isolation between its ports of at least 22.5 dB and an amplitude imbalance of less than 1 dB. The combiner is fabricated on an FR-4 substrate with 0.8 mm thickness. The total size of the board is 78 × 61 × 0.8 mm3.
S. Deif, O. Hammi, M. S. Sharawi, D. N. Aloi   +3 more
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UHF Band Compact Range Feed Antenna with Compact Size

2022 IEEE Conference on Antenna Measurements and Applications (CAMA), 2022
Miaoshan Song, Zhengpeng Wang, Qijie Hu
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Compacted Binary Mixtures of Nanometer-Sized Crystals

MRS Proceedings, 1990
ABSTRACTA preparation method for mixtures of chemically different kinds of crystals on a nanometer scale is described. The method is based on inert gas condensation followed by the consolidation by means of high pressure. Since the size of the crystals is in the range of 6–20 nm, an appreciable volume fraction of the material is made up by interphase ...
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Compact size substrate integrated waveguide phase shifter

2016 26th International Conference Radioelektronika (RADIOELEKTRONIKA), 2016
The design and implementation of the proposed compact size substrate integrated waveguide (SIW) phase shifter for the K band is presented. The comparison of the simple moved via towards the center of SIW and the structure with three vias moved towards the center with the smooth transition is presented.
Tomas Urbanec, Jaroslav Lacik
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Compact size ultra wideband Hexagonal Fractal antenna

2010 25th Biennial Symposium on Communications, 2010
A compact size ultra wide-band coplanar waveguide (CPW) fed, fractal antenna is presented. A rectangular slot antenna is excited by a 50Ω-CPW with a fractal patch. The antenna was studied experimentally regarding impedance bandwidth, radiation patterns and gain.
A. A. Lotfi-Neyestanak, M. R. Azadi, A. Emami-Forooshani   +2 more
openaire   +1 more source