Time-domain analysis of compact dual band-notched slot antenna in indoor environments

AbstractFrequency- and time-domain characteristics as well as indoor propagation channel impulse response of a compact dual band-notched ultra-wideband (UWB) slot antenna are investigated in this paper. The antenna consists of a narrow rectangular radiation patch and a rectangular wide slot in the modified ground plane. A pair of L-shaped stubs are connected to the radiation patch to obtain band-notched property in WLAN band and a narrow straight stub is placed on the back side of the substrate to create band-notched characteristics in X-band downlink satellite communication system. Moreover, two small parasitic strips are added to the radiation patch to enhance the bandwidth (BW) of the antenna up to 14 GHz. A comprehensive study on time-domain and indoor propagation channel characteristics of the proposed antenna is also presented throughout the paper. A ray-tracing approach based on geometrical optics is applied to analyze the indoor channel characteristics. The designed antenna not only has a wide BW and compact size but also has appropriate radiation and time-domain characteristics over the antenna operating BW. The measured and simulated results are in good agreement. These advantages make the proposed antenna as a desirable option for UWB impulse radio applications.

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Compact UWB monopole antenna with reconfigurable band-notch characteristics

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078719001296 ◽

2019 ◽

Vol 12 (3) ◽

pp. 252-258 ◽

Cited By ~ 1

Author(s):

Liping Han ◽

Jing Chen ◽

Wenmei Zhang

Keyword(s):

Ground Plane ◽

Monopole Antenna ◽

Ultra Wideband ◽

Dual Band ◽

Radiation Patterns ◽

Pin Diodes ◽

Notch Band ◽

Rectangular Patch ◽

Compact Size ◽

Defected Ground Plane

AbstractA compact ultra-wideband (UWB) monopole antenna with reconfigurable band-notch characteristics is demonstrated in this paper. It is comprised of a modified rectangular patch and a defected ground plane. The band-notch property in the WiMAX and WLAN bands is achieved by etching an open-ended slot on the radiating patch and an inverted U-shaped slot on the ground plane, respectively. To obtain the reconfigurable band-notch performance, two PIN diodes are inserted in the slots, and then the notch-band can be switched by changing the states of the PIN diodes. The antenna has a compact size of 0.47 λ1 × 0.27 λ1. The simulated and measured results indicate that the antenna can operate at a UWB mode, two single band-notch modes, and a dual band-notch mode. Moreover, stable radiation patterns are obtained.

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3.5/5.5 GHz dual band-notch ultra-wideband slot antenna with compact size

Electronics Letters ◽

10.1049/el.2010.2722 ◽

2010 ◽

Vol 46 (5) ◽

pp. 325 ◽

Cited By ~ 22

Author(s):

L.-H. Ye ◽

Q.-X. Chu

Keyword(s):

Ultra Wideband ◽

Dual Band ◽

Slot Antenna ◽

Compact Size

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Compact stepped slot antenna for ultra-wideband applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078721000726 ◽

2021 ◽

pp. 1-7

Author(s):

B. Hammache ◽

A. Messai ◽

I. Messaoudene ◽

T. A. Denidni

Keyword(s):

Radiation Pattern ◽

Impedance Matching ◽

Ultra Wideband ◽

Slot Antenna ◽

Impedance Bandwidth ◽

Back Side ◽

Compact Size ◽

Measurement Results ◽

Operating Bandwidth ◽

Uwb Applications

Abstract In this paper, a compact stepped slot antenna for ultra-wideband (UWB) applications is proposed. A very small size and UWB bandwidth operation are achieved by integrating a stepped slot in the back side of the antenna. This stepped slot is excited by using a 50 Ω-feed line in the top side of the antenna. The antenna is characterized by an impedance bandwidth between 3.05 GHz and more than 12 GHz. The dimensions of the antenna are 17 mm × 8 mm × 1.27 mm, which leads to the most compact size compared with other works in the literature. The integrated stepped slot is divided into additional elementary slots, where each elementary slot has a matching point. Adding these elementary slots allows to increase further the operating bandwidth. The radiation pattern of the compact stepped slot antenna is omnidirectional in the H-plane and bidirectional in the E-plane. The measurement results agree well with the simulated ones in terms of impedance matching and radiation pattern.

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Cantor fractal-based printed slot antenna for dual-band wireless applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078714001469 ◽

2014 ◽

Vol 8 (2) ◽

pp. 263-270 ◽

Cited By ~ 10

Author(s):

Jawad Ali ◽

Seevan Abdulkareem ◽

Ali Hammoodi ◽

Ali Salim ◽

Mahmood Yassen ◽

...

Keyword(s):

Ground Plane ◽

Design Procedure ◽

Dual Band ◽

Slot Antenna ◽

Geometrical Parameters ◽

Wireless Applications ◽

Antenna Performance ◽

Compact Size ◽

Wide Range ◽

Slot Structure

Fractal geometries are attractive for antenna designers seeking antennas with compact size and multiband resonant behavior. This paper presents the design of a new microstrip-fed printed slot antenna for use in dual-band wireless applications. The slot structure of the proposed antenna is in the form of Cantor square fractal geometry of the second iteration. The slot structure has been etched on the ground plane of a substrate with relative permittivity of 4.4 and 1.6 mm in thickness. A parametric study is conducted to explore the effects of some geometrical parameters on the antenna performance. Results show that the antenna possesses a dual-band behavior with a wide range of resonant frequency ratio. In addition to the ease of fabrication and simple design procedure, the antenna offers desirable radiation characteristics. A prototype of the proposed antenna has been simulated, fabricated, and measured. The measured 10 dB return loss bandwidths for the lower and the upper resonant bands are 42% (2.35–3.61 GHz) and 20% (5.15–6.25 GHz), respectively. This makes the proposed antenna suitable to cover a number of operating bands of wireless systems (2.4 GHz-Bluetooth, 2.4 GHz ISM, 2.4/5.8 GHz-WLAN, 3.5 GHz-WiMAX, and 5.8 GHz-ITS).

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Analysis and design of a compact ultra-wideband antenna with WLAN and X-band satellite notch

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v10i4.pp4261-4269 ◽

2020 ◽

Vol 10 (4) ◽

pp. 4261

Author(s):

Mohssine El Ouahabi ◽

Aziz Dkiouak ◽

Alia Zakriti ◽

Mohamed Essaaidi ◽

Hanae Elftouh

Keyword(s):

Satellite Communication ◽

Ground Plane ◽

Ultra Wideband ◽

Ring Resonators ◽

Dual Band ◽

Impedance Bandwidth ◽

Geometrical Parameters ◽

Analysis And Design ◽

X Band ◽

Compact Size

<span lang="EN-US">A compact design of ultra-wideband (UWB) antenna with dual band-notched characteristics based on split-ring resonators (SRR) are investigated in this paper. The wider impedance bandwidth (from 2.73 to 11.34 GHz) is obtained by using two symmetrical slits in the radiating patch and another slit in the partial ground plane. The dual band-notch rejection at WLAN and X-band downlink satellite communication system are obtained by inserting a modified U-strip on the radiating patch at 5.5 GHz and embedding a pair of rectangular SRRs on both sides of the microstrip feed line at 7.5 GHz, respectively. The proposed antenna is simulated and tested using CST MWS high frequency simulator and exhibits the advantages of compact size, simple design and each notched frequency band can be controlled independently by using the SRR geometrical parameters. Therefore, the parametric study is carried out to understand the mutual coupling between the dual band-notched elements. To validate simulation results of our design, a prototype is fabricated and good agreement is achieved between measurement and simulation. Furthermore, a radiation patterns, satisfactory gain, current distribution and VSWR result at the notched frequencies make the proposed antenna a suitable candidate for practical UWB applications.</span>

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Frequency and time domain analysis of a novel UWB antenna with dual band-notched characteristics

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078715001658 ◽

2015 ◽

Vol 9 (2) ◽

pp. 427-436 ◽

Cited By ~ 2

Author(s):

Rajarshi Sanyal ◽

Abhirup Patra ◽

Parthapratim Sarkar ◽

Santosh Kumar Chowdhury

Keyword(s):

Time Domain ◽

Wireless Local Area Network ◽

Local Area Network ◽

Ground Plane ◽

Angular Separation ◽

Time Domain Analysis ◽

Local Area ◽

Ultra Wideband ◽

Dual Band ◽

Area Network

This paper presents the dual band notch characteristics of Ultra wideband (UWB) monopole antenna. Proposed antenna (30 × 30 mm2) consists of arrow shaped patch and truncated ground plane. Operating range of the proposed antenna (voltage standing wave ratio < 2) is 2.2–11 GHz. In order to achieve dual band stop characteristics, λ/2 open ended angularly separated slit pair has been inserted on the radiator for world interoperability for microwave access (WIMAX) (3.3–3.9 GHz) band rejection performance and wireless local area network (WLAN) (5.1–5.9 GHz) band rejection has been realized by introducing a pair of angularly separated λ/2 conductor backed plane (CBP). Using proper adjustment of angular separation for both slit pair and CBP pair, enhanced band rejection can be achieved for the WIMAX and WLAN band, respectively. The performance of antenna has been investigated in terms of frequency domain and time domain to assess its suitability in UWB communication.

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A CPW-Fed Circular Wide-Slot UWB Antenna with Wide Tunable and Flexible Reconfigurable Dual Notch Bands

The Scientific World JOURNAL ◽

10.1155/2013/402914 ◽

2013 ◽

Vol 2013 ◽

pp. 1-10 ◽

Cited By ~ 8

Author(s):

Yingsong Li ◽

Wenxing Li ◽

Qiubo Ye

Keyword(s):

Coplanar Waveguide ◽

Circular Ring ◽

Ultra Wideband ◽

Dual Band ◽

Slot Antenna ◽

Uwb Antenna ◽

Notch Band ◽

Compact Size ◽

Stepped Impedance Resonator ◽

Uwb Communication

A coplanar waveguide (CPW)-fed circular slot antenna with wide tunable dual band-notched function and frequency reconfigurable characteristic is designed, and its performance is verified experimentally for ultra-wideband (UWB) communication applications. The dual band-notched function is achieved by using a T-shaped stepped impedance resonator (T-SIR) inserted inside the circular ring radiation patch and by etching a parallel stub loaded resonator (PSLR) in the CPW transmission line, while the wide tunable bands can be implemented by adjusting the dimensions of the T-SIR and the PSLR. The notch band reconfigurable characteristic is realized by integrating three switches into the T-SIR and the PSLR. The numerical and experimental results show that the proposed antenna has a wide bandwidth ranging from 2.7 GHz to 12 GHz with voltage standing wave ratio (VSWR) less than 2, except for the two notch bands operating at 3.8–5.9 GHz and 7.7–9.2 GHz, respectively. In addition, the proposed antenna has been optimized to a compact size and can provide omnidirectional radiation patterns, which are suitable for UWB communication applications.

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Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques

Micromachines ◽

10.3390/mi12030269 ◽

2021 ◽

Vol 12 (3) ◽

pp. 269

Author(s):

Ayman A. Althuwayb ◽

Mohammad Alibakhshikenari ◽

Bal S. Virdee ◽

Pancham Shukla ◽

Ernesto Limiti

Keyword(s):

Antenna Array ◽

Ground Plane ◽

Ultra Wideband ◽

Dual Band ◽

Area Network ◽

Electromagnetic Bandgap ◽

Uwb Antenna ◽

Average Gain ◽

Left Handed ◽

Notched Band

This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25–10.1 GHz. To improve the array’s impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2–12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15–5.825 GHz) and X-band satellite downlink communication band (7.10–7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.

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