A compact printed monopole array with neutralization line for UWB applications

A Review on Different Techniques of Mutual Coupling Reduction Between Elements of Any MIMO Antenna. Part 2: Metamaterials and Many More

“…A wideband NL comprises two metal strips and one circular disc (Zhang & Pedersen, 2016), as represented in Figure 10b; the circular disc provides multiple decoupling current paths that help achieve wideband decoupling. A simple meandered‐shaped metallic stripline (Y. Yu et al., 2016) has been used as NL to cancel coupling between circular rings shaped radiating patch antennas as represented in Figure 11a. An NL comprises two metallic strips and a rectangular patch (Tiwari, Singh, & Kanaujia, 2019; Tiwari, Singh, & Kanaujia, 2019), as described in Figure 11b has been used between the UWB‐MIMO antenna elements.…”

“… (a) Meandered‐shaped metallic NL (Y. Yu et al., 2016) (b) NL comprises of two metallic strips and a rectangular patch (Tiwari, Singh, & Kanaujia, 2019; Tiwari, Singh, & Kanaujia, 2019). NL, neutralization line.…”

“…A simple meandered-shaped metallic stripline (Y. Yu et al, 2016) has been used as NL to cancel coupling between circular rings shaped radiating patch antennas as represented in Figure 11a. An NL comprises two metallic strips and a rectangular patch , as described in Figure 11b has been used between the UWB-MIMO antenna elements.…”

“…Wang & Du, 2014;Y. Yang et al, 2016;Y. Yu et al, 2016;Zhang & Pedersen, 2016) Cloaking Structures (Ahmed & Elwi, 2019;Alù & Engheta, 2005;Bernety & Yakovlev, 2015;Bisht et al, 2020;Z.…”

A Penta-Band Reject Inside Cut Koch Fractal Hexagonal Monopole Uwb Mimo Antenna for Portable Devices

“…However, due to the need for miniaturization of the antenna, the space between the antenna elements is limited. Parasitic elements [16] and neutralization lines [18] are introduced to improve isolation. Defected ground structures (DGS) are widely used in UWB antennas to improve isolation [4,5].…”