Design of miniaturized single band-notch micro strip antenna with enhanced UWB performance

Abstract

In the present paper, design of a novel miniaturized single band‐notch microstrip antenna with enhanced ultra wide band performance is presented. To enhance bandwidth, rectangular shape radiator patch and modified ground plane are fed with a tapered microstrip feed line. The proposed antenna posses extended ultra wide bandwidth of 20.5 GHz (from 5.0 ‐ 25.5 GHz). Further, a L‐shaped slot is etched in the radiator to restrict electromagnetic interference at WLAN band. The antenna shows a 8 dB less gain in the stop‐band, while the gain at frequencies other than the stop band remains unchanged. The band‐notch antenna posses a bandwidth of 20.9 GHz (from 4.6‐ 25.5 GHz). The proposed antennas provide a wide usable fractional bandwidth of more than 134% with simple and ultra compact sizes of 11 × 16× 0.8 mm3. Time‐domain analysis of the proposed UWB antenna shows that it has good pulse handling capability along with stable group delay. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1494–1499, 2016

A Miniaturized Quasi-Self-Complementary Uwb Antenna With Band-Rejection Characteristic

“…Size (mm × mm) Area (mm 2 ) Bandwidth (GHz) [9] 37 × 47 1739 2.8-13.5 [10] 40 × 40 1600 2.8-11.34 [11] 26 × 28.5 741 2.82-13.86 [12] 24 × 28 672 3-10.5 [13] 25 × 25.5 637.5 3-11 [14] 11 × 16 176 4.6-25.5 Proposed antenna 9 × 17.5 157.5 3.18-13.4…”

“…The comparison between the proposed antenna and the antennas mentioned above is shown in Table 1. Although the antenna in [14] presents a considerable size reduction compared to that of the other antennas presented in literature, its lower frequency begins from 4.6 GHz without covering the 3.1-4.6 GHz UWB. Obviously, the proposed antenna achieves a lower cut-in frequency with a size reduction of 11% compared to that presented in [14].…”

“…There are several methods that can be adopted to realize a band-notched UWB antenna. They consist in putting parasitic patches near the radiator [9,13], embedding a quarter wavelength tuning stub within the slot on the patch [12], or inserting a slit on the radiator patch [11,14]. In addition, band-rejected filtering properties are achieved by using a rectangular and meander line microstrip resonators in [10].…”

Triple-Notched Band CPW fed UWB Antenna with Metallic Reflector for High Gain Performance

“…The disruptions of these high power communication systems with UWB communication systems can evade by applying the band rejection filter [3]. Many UWB antennas with band-notched characteristics proposed in the literature [4][5][6][7][8][9][10][11][12][13]. Zarrabi [4] reported a triple notch band UWB antenna that had a fractal Koch structure with a T-shaped stub.…”

“…Das [12] reported a low-cost and simple rectangular monopole antenna in which single, double as well as triple notched bands achieved by fluctuating spiral slot length with a median frequency of 3.57 GHz, 5.12 GHz, and 8.21 GHz respectively. S. Yadav [13] communicated a rectangular shaped radiator with a modified ground plane. The bandwidth of this structure extended from 5.0 GHz to 25.5 GHz.…”