Super Wide Band Multiple-Input Multiple-Output Antenna for UWB Applications with Dual Band-Notched Characteristics

Mohajeri, Farzad; Bahmanzadeh, Faezeh

doi:10.22034/joeds.2025.520531.1092

Super Wide Band Multiple-Input Multiple-Output Antenna for UWB Applications with Dual Band-Notched Characteristics

Document Type : Original Article

Authors

Farzad Mohajeri ¹

Faezeh Bahmanzadeh ²

¹ Department of Communications and Electronics, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran

² Faculty of Electronics and Communication, School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran

10.22034/joeds.2025.520531.1092

Abstract

This paper presents a compact dual-band-notched super wide band (SWB) multiple-input multiple-output (MIMO) antenna for UWB applications. The bandwidth of the antenna is near 38 GHz from 2.3 to 40 GHz, which covers L, S, C, X, Ku, K, and Ka bands and has two notched frequencies around 3.1-3.7 GHz for WiMAX and 5.1-5.8 GHz for WLAN. This antenna comprises two identical elements, fed by two 50 Ω microstrip lines and placed adjacent on a low-cost FR-4 substrate. The total size of the antenna is about 31 × 65 × 1.6 mm3. To suppress the interferences of WiMAX and WLAN bands, two elliptic single complementary split-ring resonators (ESCSRRs) were etched out of the radiating patch and to achieve a good isolation between the two elements a long vertical open-ended slot is etched out of the shared ground plane and an isolation of more than 17 dB is achieved. In addition, the Envelope Correlation Coefficient (ECC) value is less than 0.01.

Keywords

Band-notched characteristics

elliptic single complementary split-ring resonators (ESCSRRs)

MIMO antennas

super wide band (SWB) antennas

UWB Applications