Novel Dual-Band Dipole Antenna Integrated with EBG Electromagnetic Bandgap Structures Dedicated to Mobile Communications

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.

Download Full-text

Dual-Band Magnetoelectric Dipole Antenna Using a Disturbed Stub

2020 13th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) ◽

10.1109/ucmmt49983.2020.9296042 ◽

2020 ◽

Author(s):

Cheng-Guang Sun ◽

Li-Ying Feng

Keyword(s):

Dipole Antenna ◽

Dual Band

Download Full-text

A Wideband Dual-Band Magneto-Electric Dipole Antenna with Modified Feed Structure

2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT) ◽

10.1109/icmmt.2018.8563577 ◽

2018 ◽

Author(s):

Fan Li ◽

Yufa Sun ◽

Haoran Zhu ◽

Hongyu Fang

Keyword(s):

Electric Dipole ◽

Dipole Antenna ◽

Dual Band

Download Full-text

Design and Analysis of MIMO Dual Band Patch Antenna for 5G New Radio Applications in Mobile Terminals

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.36072 ◽

2021 ◽

Vol 9 (VI) ◽

pp. 5446-5451

Author(s):

Swati Dhandade

Keyword(s):

Mobile Communications ◽

Antenna Design ◽

Dual Band ◽

Slight Variation ◽

Band Frequency ◽

Mimo Antenna ◽

High Isolation ◽

New Radio ◽

Compact Size ◽

5G Mobile Communications

This paper presents a dual-band MIMO antenna design with compact size for 5G communication under 6 GHz band frequency. The metallic monopole stub structure is used to miniaturization of antenna. The L-shape monopole antenna is modified by adding semi-circular element in radiating structure of monopole to obtain dual-band resonance. The High isolation is achieved by employing T-shaped stub in ground plane.It has compact size is 45 mm × 25 mm × 1.6 mm3. The proposed Dual Band MIMO antenna has been design on FR4 material with ɛr = 4.4 with 1.6 thickness. The proposed antenna has 5G application in the bands of 2.5 GHz (2.34 GHz-2.62 GHz) and 3.5 GHz (3.20 GHz-5.20 GHz). The bandwidth of antenna getting 320MHz and 2500MHz at 2.5GHz and 3.5GHz respectively. The Isolation (S21) of proposed antenna is -31.2 dB at 2.5 GHz and -19.5 dB at 3.5 GHz. VSWR is less than 1.06 for both the bands. The designed dual band MIMO antenna covers 5G bands of 2.3-2.4GHz (n30/n40), 2.4-2.5GHz (n7/n38/n41/n90), and 3.2-5.2GHz (n77/n78/n80). The experimental and simulated results observed good matching except some slight variation. This proposed dual band MIMO antenna is suitable for 5G mobile Communications.

Download Full-text