Design approach for dual element hybrid MIMO antenna arrangement for wideband applications

Abstract

This communication explains the designing of two-port based hybrid radiator for multiple-input-multiple-output (MIMO) applications. Hybrid radiator includes U-shaped printed line and ring dielectric resonator antenna (ri-DRA). Wideband characteristics have been achieved by exciting both the U-shaped printed line along with ri-DRA. The U-shaped metallic line acts as a magnetic dipole and helps to excite fundamental hybrid mode (HE 11δ ) in the ri-DRA. Dual L-shaped and a rectangular defect have been created in ground plane for achieving wideband isolation over the working frequency band. Optimized Scattering parameters and far-field results are verified by fabricating and testing of antenna prototype. Experimental outcomes confirm that the proposed MIMO antenna gives wider impedance bandwidth (80%), improved port isolation (better than 18 dB), stable gain (~4 dB), and radiation pattern. Various MIMO performance factors are analyzed and instituted in the tolerable boundaries. K E Y W O R D S diversity performance, MIMO antenna, ring DRA, wideband

Complementary meander‐line‐inspired dielectric resonator multiple‐input‐multiple‐output antenna for dual‐band applications

“…A lot of recent designs on DR‐MIMO antennas for the application in wireless MIMO system have been reported . These designs are mainly focused on mutual coupling reduction and link upgradation up to a certain level in some of the specific application bands.…”

“…A lowest isolation of 17 dB is found over the frequency range of 5.2 to 6.08 GHz. In , a “U”‐shaped printed line is used to excite an MIMO antenna that covers the frequency band from 3.5 to 6.75 GHz with port isolation of 18 dB. In , a hybrid triple‐band cylindrical DR‐MIMO antenna is explained.…”

“…A lot of recent designs on DR-MIMO antennas for the application in wireless MIMO system have been reported. 2,8,10,[13][14][15][16][17][18][19] These designs are mainly focused on mutual coupling reduction and link upgradation up to a certain level in some of the specific application bands. Simple feed mechanisms along with low mutual coupling are not extensively explored in the field of DR-MIMO antennas.…”

Design of a compact triple band antenna with independent frequency tuning for MIMO applications

“…It is more convenient to use a multiband antenna instead of multiple antenna elements to operate in multiband, because the latter leads to increase in size of the device. Various techniques to design single band, multiband, and UWB MIMO antenna are reported in recent years in engineering community . In Ref.…”

“…Various techniques to design single band, multiband, and UWB MIMO antenna are reported in recent years in engineering community. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] In Ref. 2, quad elements MIMO antenna for ultra wide band (UWB) application is presented.…”