Planar suspended line technique based UWB-MIMO antenna having dual-band notching characteristics

摘要

This communication reports significant isolation improvement utilizing planar suspended line (PSL) technique in ultra wideband (UWB) antenna for Multiple Input Multiple Output (MIMO) application. The antenna exhibits dual-band notched characteristic in Wireless Local Area Network (WLAN) band covering 5.45-5.85 GHz range; and in 7.15-7.95 GHz range for X-band downlink operations in satellite communication. Band-notching characteristics have been obtained by employing a single Elliptical Split Ring Resonator (ESSR) placed adjacent to each microstrip feed line of the radiating element and duo of "Y"-shaped strips employed within the circular ring of individual radiating elements. Two elements antenna occupy a compact space of 20 x 36 x 1.6 mm(3) exhibiting huge measured impedance bandwidth (S-11/S-22 -10 dB) covering 3.1-11.5 GHz and significant isolation of 21 dB in the almost entire band of operation. The electrical performance of antennas has been analyzed in terms of various MIMO parameters. Measured results demonstrate good accord with simulated results proving the competency of proposed antenna in high-density package systems and massive MIMO applications.