A Compact CPW Fed Uwb Antenna With Quad Band Notch Characteristics for Ism Band Applications

Abstract

Abstract-A quad band-notched compact ultra-wideband (UWB) patch antenna to operate on the industry, scientific, and medical (ISM) bands are presented in this study. A modified hexagonal patch vertex-fed with a coplanar waveguide (CPW) is fabricated on an FR-4 substrate with size of 43 × 28 × 1.6 mm 3 and fractional bandwidth of 133%. The compact antenna operates at a frequency of 2.45 GHz, which is often required for the efficient performance of ISM utilisation. The existing bands share the same bandwidth as that of UWB systems. Therefore, a notched band at 3 GHz for worldwide interoperability for microwave access (WiMAX), and a further resonance band at 2.45 GHz for ISM are generated by implementing a meander-line strip on the antenna. Furthermore, the design demonstrates a couple of F-shaped slots and an inverted diamond-shaped slot on the patch. Moreover, a pair of Jshaped slots is loaded on the ground plane. The downlink C-band, wireless local area network (WLAN), and downlink X-band are rejected by the proposed slots, respectively. The current distribution, gain, radiation efficiency, and quad notched parameters of the proposed antenna are studied by using CST software. The demonstrated prototype covers an ISM band at (2.2 GHz-2.6 GHz) with a return loss of −23.45 dB and omnidirectional radiation patterns. A good agreement is observed between measured and the simulated results. This paper has presented a solution for both interference and miniaturised issues.

High gain CPW‐fed UWB planar monopole antenna‐based compact uniplanar frequency selective surface for microwave imaging

“…The geometry and the characteristics proposed hexagonal UWB monopole antenna, as comprehensively discussed in Ref. 24. Figure 5A portrays the parameters of the uniplanar To design the antenna with CPW-fed, two copper ground planes were adjusted on the sides of the feed line by a distance of (Scpw).…”

A state-of-art review on band-notch characteristics in UWB antennas

“…In this section analysis of different configurations of UWB antenna with quadruple as well as multiple notch characteristics has been carried out. As multiple services co‐exist occupying frequencies in the UWB band, quad/multi notch property is highly desirable in recent designed antennas …”

“…After analyzing the above literatures, a categorization of the methods applied for obtaining notch characteristics of different antenna configurations is presented in Figure .…”

“…As multiple services co-exist occupying frequencies in the UWB band, quad/multi notch property is highly desirable in recent designed antennas. [169][170][171][172][173][174][175][176][177][178][179][180][181][182][183]…”

“…Section 3 analyses UWB antennas with single notch characteristics followed by analysis of dual‐ and triple‐ notch antennas in Section 4 and Section 5, respectively. Further, in Section 6 quad−/multiple‐notch based antenna configurations are investigated. The discussion also includes description of different reconfigurable configurations with notched bands in Section 7 …”