Novel CPW‐FED printed monopole antenna with an n‐shaped slot for dual‐band operations

Abstract

A novel coplanar waveguide (CPW)-fed printed monopole antenna with an n-shaped slot for dual-band operations is proposed. By etching an n-shaped slot on the radiating element, two tunable operating bands can be obtained. The measured results indicate that the impedance bandwidths of the proposed antenna, defined by 10-dB return loss, are 13.ABSTRACT: In this article, a low-cost, compact printed microstrip-fed circular monopole ultra-wideband antenna with dual band-notched function is proposed. By embedding a C-shaped slot on the circular radiating patch and a pair of L-shaped slots on the rectangular ground patch, dual band notched characteristics around 3.5 GHz for WiMAX and 5.5 GHz for wireless local-area network (WLAN) can be obtained. The proposed antenna is designed, fabricated, and tested. The measured results show UWB impedance bandwidth with dual notch, stable radiation patterns, and constant gain. The proposed antenna, with a compact dimension of 24 Â 36 mm 2 , operates over the frequency band from 2.5 to 10.6 GHz with S 11 À10 dB, except the over the dual notch bands of 3.3-4.2 and 5.1-5.9 GHz. Group delay and transfer function indicate that the antenna has good transient response. In addition, the radiation patterns are nearly omnidirectional in H-plane and typical monopole-like in E-plane. V C 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:242-246, 2012; View this article online at wileyonlinelibrary.com.

Printed monopole antenna with tunable band-notched characteristic for use in mobile and ultra-wide band applications

“…With attractive features such as low cost, small size, and ease of fabrication, this antenna has received increasing attention with developments in communication technology. Many versions have been reported over the last decade [1][2][3][4][5][6][7][8][9][10][11][12], covering a wide range of frequency bands and diverse applications.…”

A dual‐band array antenna using dome‐shaped radiating patches

“…Moreover, other strategies to improve the impedance bandwidth which do not involve a modification of the geometry of the planar antenna have been investigated [1][2][3][4][5]. As important compact UWB antennas, printed monopole antennas with frequency notched function have attracted more and more attention [6][7][8].…”

“…In this study, G-shaped structure for radiating patch radiating patch perturbs the resonant response and also acts as a halfwave resonant structure [5][6][7]. At the notched frequency, the current concentrated on the edges of the interior and exterior of this structure.…”

Miniaturized Balanced Antenna with Integrated Balun for Practical LTE Applications

“…As a result, several works have recently been dedicated to internal multiband antennas in mobile handset applications. The planar Inverted-F antennas (PIFA) [2], [3], microstrip patch antennas [4], [5] and monopole printed structures [6], [7] have been considered as the most common internal mobile phone antennas. In particular, with the advancement of the LTE technology, smart phones are now broadly used, thus designing new antennas for legacy and future release of the LTE standard, catering for carrier aggregation and multiple wideband frequency bands are now of much interest in the research community.…”