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Journal of Radio Electronics Online scientific journal · eISSN 1684-1719
2013, № 9 · ELECTRODYNAMICS

A Coplanar Waveguide-fed Ultra Wideband Hexagonal Slot Antenna with WLAN Band Rejection A Coplanar Waveguide-fed Ultra Wideband Hexagonal Slot Antenna with WLAN Band Rejection

T. Mandal1,2, S. Das3,4,5

1 Государственный колледж инжиниринга и текстильной технологии, Серампур, Хугли, Индия, India
2 Department of Information Technology, Government College of Engineering and Textile Technology, Serampore, Hooghly, India, India
3 Инженерно-научный университет Бенгали, Шибпур, Ховрах, Индия, India
4 Department of Electronics &amp
5 Tele-Comm. Engineering, Bengal Engineering and Science University, Shibpur, Howrah, India, India
Full text EDN RPQWIV

Abstract

In this paper a printed regular hexagonal slot antenna with a hexagonal stub fed by a CPW line has been considered for UWB. This antenna is then modified to obtain band rejection for WLAN of 5.15-5.88 GHz by incorporating a C-shape slot within the exciting stub. The parameters of the C-shape slot offer sufficient freedom for selecting and shifting the notch band. VSWR, gain and radiation characteristics of them are studied and discussed here. From the experimental results it has been observed that the impedance bandwidth, defined by VSWR ≤ 2, reaches a value of 7.35GHz (3.05~10.4GHz), with stop band between 5.10 to 6.0 GHz. The antenna gain varies from 4 dB to 6 dB over the whole operating band excluding the notch band. Surface current distributions and transmission line model are used to analyze the effects of the slot. Measured group delay has small variation within the operating band except notch band and hence the proposed antenna may be suitable for UWB applications.

  • hexagonal slot
  • hexagonal stub
  • WLAN band
Аннотация (на русском)

Сверхширокополосная гексагональная щелевая антенна с режекцией канала WLAN и компланарной волноводной запиткой

В этой статье рассмотрена печатная шестиугольная щелевая антенна с гексагональным шлейфом, запитываемым через СШП копланарный волновод. Эта антенна затем видоизменяется для режекции диапазона WLAN 5.15-5.88 ГГц путем включения C-образной щели в внутри запитываемого шлейфа. Параметры С-образной щели предполагают достаточную свободу для настройки полосы режекции. Обсуждаются величины КСВН, усиления и характеристики излучения антенны.. Из экспериментальных результатов было отмечено, что пропускная способность, определяемая отношением КСВ ≤ 2, достигает значения 7.35 ГГц (3.05 ~ 10.4 ГГц), с полосой режекции между 5.10 до 6.0 ГГц. Коэффициент усиления антенны колеблется от 4 дБ до 6 дБ над по всему диапазону исключая полосу режекции. Модели распределения поверхностных токов и линии передачи модели были использованы для анализа влияния щели. Измеренные групповая задержка имеет небольшие вариации в пределах рабочего диапазона за исключением диапазона режекции и, следовательно, предлагаемая антенна может быть используемой для различных приложений при передаче сверхширокополосных сигналов.

For citation

Mandal T., Das S. A Coplanar Waveguide-fed Ultra Wideband Hexagonal Slot Antenna with WLAN Band Rejection A Coplanar Waveguide-fed Ultra Wideband Hexagonal Slot Antenna with WLAN Band Rejection // Journal of Radio Electronics. – 2013. – No. 9.

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