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Keyword: Tunable Antenna
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Open AccessArticle
7 Pages, 2,024 KB Download PDF

Frequency-Tunable Narrow-Band Ladder-Shape Microstrip Patch Antenna for TV Applications

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 4, Page # 51–57, 2019; DOI: 10.25046/aj040407
Abstract:

In this paper, a frequency-tunable antenna is proposed based on a previous antenna which has a ladder shape and a size of 120 x 50 mm2. It is fed using a coaxial cable and it is operational at 700 MHz which is in the UHF band with a bandwidth of 30 MHz. Varactors, having a…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Telecommunications (TEL))
Open AccessArticle
6 Pages, 2,411 KB Download PDF

Design and Analysis of Frequency Reconfigurable Antenna Embedding Varactor Diodes

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 371–376, 2019; DOI: 10.25046/aj040647
Abstract:

In this paper, we present a broadband frequency tunable antenna embedding varactor diodes. The reference antenna structure is a square antenna of patch dimensions [39,2 × 39,2] mm², operating at a single resonance frequency 2.45GHz. The recommended procedure to achieve the frequency shifting is to etch rectangular slots on the patch and to embed two…

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(This article belongs to Section Telecommunications (TEL))
Open AccessArticle
7 Pages, 2,510 KB Download PDF

Flexible Aperture Tuning Solution for Cellular Main Antenna in Metallic Back Cover Mobile Phone

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 49–55, 2017; DOI: 10.25046/aj020606
Abstract:

Metal housing has been used extensively on portable communication devices such as on mobile phones and tablets.  The choice of metal housing ranges from metallic rim to metallic back cover.  This metal housing tends to improve the outlook appearance of the mobile devices, and add mechanical strength towards the mobile devices.  However, from the aspect…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electronic Engineering (EEE))

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