Compact asymmetric dipole antenna with U-shape structure for wireless cable modem application

2016 ◽  
Author(s):  
Sin Yan Ke ◽  
Wen-Shan Chen ◽  
Shih-Ying Chao
Keyword(s):  
Dipole Antenna ◽  
Cable Modem ◽  
Shape Structure

Coherent electron nanodiffraction from clean silver nano particles in a UHV STEM

1993 ◽  
Vol 51 ◽  
pp. 1058-1059
Author(s):  
J. Liu ◽  
M. Pan ◽  
G. E. Spinnler
Keyword(s):  
Supported Catalysts ◽  
Imaging Techniques ◽  
Nano Particles ◽  
Metal Particles ◽  
Shape Structure ◽  
Dynamical Simulations ◽  
Small Metal Particles ◽  
Extract Information

Small metal particles have peculiar chemical and physical properties as compared to bulk materials. They are especially important in catalysis since metal particles are common constituents of supported catalysts. The structural characterization of small particles is of primary importance for the understanding of structure-catalytic activity relationships. The shape and size of metal particles larger than approximately 5 nm in diameter can be determined by several imaging techniques. It is difficult, however, to deduce the shape of smaller metal particles. Coherent electron nanodiffraction (CEND) patterns from nano particles contain information about the particle size, shape, structure and defects etc. As part of an on-going program of STEM characterization of supported catalysts we report some preliminary results of CEND study of Ag nano particles, deposited in situ in a UHV STEM instrument, and compare the experimental results with full dynamical simulations in order to extract information about the shape of Ag nano particles.

Modification of ionospheric plasma in the near Rf field of a dipole antenna: active experiment in space

2000 ◽  
Vol 6 (5-6) ◽  
pp. 35-48
Author(s):  
N.V. Baranets ◽  
V.V. Afonin ◽  
V.A. Gladyshev ◽  
Y.P. Sobolev ◽  
G.P. Komrakov
Keyword(s):  
Ionospheric Plasma ◽  
Dipole Antenna ◽  
Active Experiment

Wideband 3D Folded Dipole Antenna with Feed Line for Small Terminal

2013 ◽  
Vol E96.B (10) ◽  
pp. 2410-2416 ◽  
Author(s):  
Tsutomu ITO ◽  
Mio NAGATOSHI ◽  
Shingo TANAKA ◽  
Hisashi MORISHITA
Keyword(s):  
Dipole Antenna ◽  
Feed Line ◽  
Folded Dipole

DESIGN AND DEVELOPMENT OF COMB-SHAPED ME DIPOLE ANTENNA

2020 ◽  
Vol 79 (4) ◽  
pp. 283-290
Author(s):  
Neetu ◽  
P. Jyothirlatha ◽  
P. Seth
Keyword(s):  
Dipole Antenna ◽  
Design And Development

Rolled Dipole Antenna for Low-resolution GPR

PIERS Online ◽  
2007 ◽  
Vol 3 (7) ◽  
pp. 1107-1110 ◽  
Author(s):  
Andaya A. Lestari ◽  
D. Yulian ◽  
A. B. Suksmono ◽  
E. Bharata ◽  
A. G. Yarovoy ◽  
...  
Keyword(s):  
Dipole Antenna ◽  
Low Resolution

Perbandingan Desain Antena Dipole dan Yagi-Uda Menggunakan Material Aluminium pada Frekuensi 470 – 890 MHz

2017 ◽  
Vol 3 (3) ◽  
pp. 140
Author(s):  
Suci Rahmatia ◽  
Putri Wulandari ◽  
Nurul Khadiko ◽  
Fitria Gani Sulistya
Keyword(s):  
Radiation Pattern ◽  
Daily Activity ◽  
Dipole Antenna ◽  
Antenna Gain ◽  
Communication Tool ◽  
Dipole Antennas ◽  
Gain Bandwidth ◽  
Large Gain ◽  
At Home

<p><em>Abstrak </em><strong> - Antena merupakan alat pemancar yang akrab dengan aktifitas sehari-hari dan mudah sekali dijumpai, di rumah, di gedung, bahkan pada alat komunikasi yang digunakan. Salah satu antena yang sering digunakan adalah antena televisi. Antena televisi yang sering digunakan adalah Yagi-Uda yang biasanya dipakai sebagai outdoor antena dan antena dipole yang biasanya digunakan untuk indoor antena. Masing – masing jenis antena memiliki kriteria dan keuntungan berdasarkan dari kebutuhan penggunaannya. Baik antena dipole maupun antena Yagi-Uda memiliki perbedaan diantaranya adalah besar bandwidth, nilai gain, dan pola radiasi. Pada paper ini dapat diketahui bahwa bandwidth yang dimiliki antena yagi-uda lebih besar daripada antena dipole yakni 0.39943 MHz untuk antena yagi-uda dan 0.16569 MHz untuk antena dipole. Begitupula dengan besar Gain yang dimiliki antena Yagi-Uda (6.64 dBi) lebih besar dibandingkan dengan gain dari antena dipole (2.29 dBi). Perbedaan ini dikarenakan faktor elemen director dan ketebalannya.</strong></p><p><strong><br /></strong></p><p><strong><em>Kata Kunci</em></strong> – <em>Atena Televisi, Atena Yagi-Uda, Atena Dipole, Gain, Bandwidth</em></p><p><em> </em></p><p><em>Abstract</em> <strong>- Antenna is a transmitter tool that is familiar with daily activity and easy to find at home, in the building, even on the communication tool used. One of antenna that is often used is a television antenna. Television antennas are often used is Yagi-Uda which is usually used as an outdoor antenna and dipole antenna that is usually used for indoor antennas. Each type of antenna has the criteria and advantages based on the needs of its use. Both dipole antennas and Yagi-Uda antennas have differences among them are bandwidth, gain, and radiation pattern. In this paper it can be seen that the bandwidth of yagi-uda antenna is bigger than dipole antenna that is 0.39943 MHz for Yagi-Uda antenna and 0.16569 MHz for dipole antenna. Neither the large Gain of the Yagi-Uda antenna (6.64 dBi) is greater than the gain of the dipole antenna (2.29 dBi). This difference is due to element factor of director and its thickness.</strong></p><p><strong><br /></strong></p><p><strong><em>Keywords</em></strong><strong> – </strong><em>Television Antenna, Yagi-Uda Antenna, Dipole Antenna, Gain, Bandwidth</em><strong> </strong></p>

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