On the effect of a spherical shield on the radiation Q and efficiency of ideal dipole antennas

Johan C. E. Sten; Arto Hujanen

doi:10.1007/bf03219930

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

JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI ◽

10.36722/sst.v3i3.219 ◽

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

Abstrak - 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. Kata Kunci – Atena Televisi, Atena Yagi-Uda, Atena Dipole, Gain, Bandwidth Abstract - 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. Keywords – Television Antenna, Yagi-Uda Antenna, Dipole Antenna, Gain, Bandwidth

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A new method of modeling linear dipole antennas for UWB applications

IEE Mobility Conference 2005. The Second International Conference on Mobile Technology, Applications and Systems ◽

10.1049/cp:20051565 ◽

2005 ◽

Author(s):

Shen Jie ◽

Wang Jong ◽

Zhu Xuesheng

Keyword(s):

New Method ◽

Dipole Antennas ◽

Uwb Applications ◽

Linear Dipole

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Investigation of e-textile dipole antenna performance based on embroidery parameters

Textile Research Journal ◽

10.1177/00405175211013421 ◽

2021 ◽

pp. 004051752110134

Author(s):

Daniel Agu ◽

Rachel J Eike ◽

Allyson Cliett ◽

Dawn Michaelson ◽

Rinn Cloud ◽

...

Keyword(s):

Frequency Band ◽

Impedance Matching ◽

Dipole Antenna ◽

Water Soluble ◽

Wearable Sensor ◽

Dipole Antennas ◽

Antenna Performance ◽

Large Production ◽

Lower Transmission ◽

The Ideal

E-textile antennas have the potential to be the premier on-body wearable sensor. Embroidery techniques, which can be applied to produce e-textile antennas, assist in large production volumes and fast production speeds. This paper focuses on the effects of three commonly used embroidery parameters, namely stitch type, conductive thread location, and stabilizer, on the performance of embroidered dipole antennas in order to determine the ideal embroidery combination for optimal antenna performance. Fifty-four dipole antenna samples were fabricated and measured at the industrial, scientific, and medical (ISM) frequency band of 2.45 GHz. The results of this study show that machine-embroidered antenna designs with satin stitches resonate at a lower frequency and exhibit a lower transmission gain compared with those made with contour stiches, and the conductive thread location in the bobbin location plus the use of a water-soluble stabilizer can help improve impedance matching.

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