Compact Octagonal Shaped Monopole UWB MIMO Antenna with Dual Band-Notch Characteristics

Ghandade, Pratik; Parkar, Siddharth; Chauhan, Ayushya; Mhatre, Harshad; Chaudhari, Anjali

doi:10.1109/cscita47329.2020.9137800

Cited by 1 publication

(1 citation statement)

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“…The half and quarter wave length for notched band characteristic equations are represented using Equations () and (), respectively. The λ/2 wave equation for the proposed dual notched MIMO antenna are presented using Equations (), () and () [31–36].

λ goodbreak= \frac{C}{f_{notch} \sqrt{ε_{italiceff}}}; ε_{eff} goodbreak= \frac{1 + ε_{r}}{2}

ε_{eff}

is effective dielectric constant.…”

Section: Proposed Antenna Design Evolution and Optimisationmentioning

confidence: 99%

Design of novel compact eight‐element lotus shaped UWB‐MIMO antenna with triple‐notch characteristics on hollow substrate

Addepalli

Manda²,

Vidyavathi

et al. 2023

Int J Communication

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The design of novel compact two-element and eight-element lotus shaped multiple-input-multiple-output (MIMO) antenna system employing pattern diversity with enhanced isolation characteristics is presented. The proposed two-element antenna system is arranged rotationally on a square-hollow substrate resulting in an eight-element MIMO antenna system employing pattern diversity. The developed eight-element MIMO antenna system resonates in the frequency range 3.1 to 14.6 GHz housing the complete UWB band with triple band-notch characteristics at 3.7-4.5 GHz (C-band satellite down link [3.7-4.2 GHz]), 5.1-5.9 GHz (WLAN) and 6.8-8.25 GHz (X-band satellite down link (7.25-7.75 GHz) and up link (7.9-8.4 GHz)) bands. The antenna system gives element-to-element isolation of more than 25 dB in the majority of the operating band with a peak gain of 6.8 dBi and a maximum 90% efficiency. The important MIMO metrics like ECC (envelope correlation coefficient), DG (diversity gain), total active reflection coefficient (TARC), channel capacity losses (CCL) and MEG (mean effective gain) are presented for both twoelement and eight-element to estimate the performance the proposed antennas in multi-antenna environments. The both two-and eight-element designs are fabricated and the measured results of those are well agreed with simulation results.

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