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Broadband planar dipole antenna for DTV/GSM operation

✍ Scribed by Cheng-Tse Lee; Kin-Lu Wong

Book ID
102949148
Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
919 KB
Volume
50
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This article presents a new broadband planar dipole antenna for DTV signal reception in the UHF band (470 ∼ 862 MHz) and mobile communications in the GSM850/900 band (824 ∼ 894/890 ∼ 960 MHz), which requires an operating bandwidth (3:1 VSWR) of 490 MHz or about 69% centered at 715 MHz. The antenna has two radiating arms (arm 1 and arm 2) with a total length 230 mm and a width 14 mm, which are easily printed on an FR4 substrate. Broadband operation is obtained from successful excitation of the half‐ and one‐wavelength modes of the antenna, which is achieved by shifting the antenna's feeding point away from the dipole center through adding a tuning strip to arm 1 and embedding a tuning slot to arm 2. The tuning strip is extended across the tuning slot, and both are also formed as an internal matching circuit for achieving good impedance matching of the excited half‐ and one‐wavelength modes of the antenna. The proposed antenna is presented and studied. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1900–1905, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23500

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