Band‐notched ultra‐wideband antennas using nonperiodic composite right/left‐handed resonators

2019 ◽  
Vol 29 (6) ◽  
pp. e21697
Author(s):  
Navid Amani ◽  
Amir Jafargholi
Keyword(s):  
Ultra Wideband ◽  
Wideband Antennas ◽  
Left Handed

A Review of Ultra Wideband Antennas with Band Notched Characteristics

2020 ◽  
Author(s):  
Kavneet Kaur ◽  
Ashwani Kumar ◽  
Narinder Sharma
Keyword(s):  
Ultra Wideband ◽  
Wideband Antennas

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

Micromachines ◽  
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.

RADIOFREQUENCY PERFORMANCES OF TRANSPARENT ULTRA-WIDEBAND ANTENNAS

2011 ◽  
Vol 22 ◽  
pp. 259-271 ◽  
Author(s):  
Julien Hautcoeur ◽  
Franck Colombel ◽  
Xavier Castel ◽  
Mohamed Himdi ◽  
Eduardo Motta Cruz
Keyword(s):  
Ultra Wideband ◽  
Wideband Antennas

A new compact UWB traveling-wave antenna based on CRLH-TLs for embedded electronic systems

2014 ◽  
Vol 8 (8) ◽  
Author(s):  
Mohammad Alibakhshi Kenari
Keyword(s):  
Traveling Wave ◽  
Printed Circuit Boards ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Electronic Systems ◽  
Potential Candidate ◽  
Left Handed ◽  
Wave Antenna ◽  
Spiral Inductors ◽  
Traveling Wave Antenna

Design and fabrication of a traveling-wave printed planar composite right/left-handed (CRLH) antenna are presented in this paper. The proposed traveling-wave antenna constructed of four unit cells with b-shaped geometries, which each occupy 2.49 mm length, 6.32 mm width, and 0.8 mm height. In this paper, with designing the optimized b-shaped printed planar structure by the standard manufacturing techniques on the printed circuit boards, which perform the roles of the series left-handed (LH) capacitances (CL), the antenna size, bandwidth, and radiation specifications may be improved to the desirable range. Also, to obtaining the desired results the spiral inductors have been used, which play the roles of the shunt LH inductances (LL). The fabricated antenna with the proposed structure can be covered more from 2 GHz measured impedance bandwidth with minimum of the measured gain and radiation efficiency equal to 6.1 dBi and 52.3%, respectively, which happen at 9 GHz. According to the provided results, the proposed compact ultra-wideband traveling-wave antenna is a potential candidate to use in the embedded electronic systems and portable wireless communication devices.

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