A very compact and closely spaced circular shaped UWB MIMO antenna with improved isolation

Addepalli, Tathababu; Anitha, V. R.

doi:10.1016/j.aeue.2019.153016

Cited by 68 publications

(25 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dual U‐shaped branches, the addition of parallel rectangular strips, and by using LSRR meta‐material better isolation is achieved 7–11 . Slotted funnel‐type stub, 12 L‐shaped stub in the ground, 13 and protrude of rectangular strips with T‐shaped stubs also achieve better isolation 14,15 . An isolated rectangular stub between the ground, 16 uniplanar electromagnetic band gap placed between elements of the antenna, 17 Hilbert fractal etched in the ground, 18,19 and wide T‐type in the ground 20 are also the unique method for achieving isolation.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of on‐demand reconfigurable WiMAX / WLAN high isolation 2 × 2 MIMO antenna oriented adjacent/orthogonally for imaging applications in UWB‐X band

Sharma

Kumar

Kaur

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

In this reported work, two dual notched bands from 3.39 GHz to 3.92 GHz and from 4.43 GHz to 5.48 GHz for the WiMAX band (3.3–3.8 GHz) and for (lower) WLAN band (5.15–5.35 GHz) MIMO antenna with adjacent/orthogonal orientations has been investigated. Also, the proposed antenna is capable of controlling these notched bands whenever the need for power saving arises by reconfiguring them using PIN diodes. The issue of isolation between the radiating elements has been overcome by placing the radiating structures in the adjacent and orthogonal arrangement. The proposed antenna is characterized proving an average gain of 4.15/4.37 dBi and maximum radiation efficiency of 91/87% for adjacent/orthogonal orientation. The proposed antenna also shows good agreement with simulated and measured impedance bandwidth, diversity performances in terms of ECC, DG, TARC, and CCL for which values are well below the permissible range.

show abstract

Section: Introductionmentioning

confidence: 99%

Design and analysis of on‐demand reconfigurable WiMAX / WLAN high isolation 2 × 2 MIMO antenna oriented adjacent/orthogonally for imaging applications in UWB‐X band

Sharma

Kumar

Kaur

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…The diversity performance metrics ECC, CCL, MEG, and TARC are required to analyze the MIMO antenna performance. The parameter ECC describes the correlation between the channels 16,17 and is represented in Equations and for “N” element and two‐element system. More correlation means ECC value is “one” (ideal), and less correlation means ECC is “zero” ideally.…”

Section: Resultsmentioning

confidence: 99%

Design and analysis of a novel compact spanner‐shaped ultra‐wideband antenna for MIMO systems

Addepalli

Anitha²

2021

Int J Communication

Self Cite

View full text Add to dashboard Cite

Summary In this communication, a novel compact spanner shaped ultra‐wideband (UWB) antenna is designed for multiple input multiple output (MIMO) system applications. The proposed structure of size 24 × 32 mm2 (0.24λ0 × 0.32λ0, λ0 is calculated at lower band frequency) is designed and fabricated on widely available FR4 dielectric material with a dielectric constant of 4.4 and loss tangent of 0.02. The proposed structure comprises two spanner shaped antennas, a defected T‐shaped stub and a pair of small vertical strips. The defected T‐shaped stub and vertical strips are used for getting a complete UWB bandwidth and good isolation between two elements. It is performing from 3.0 to 11.0 GHz with isolation more than 20 dB in most of the operating region. The parametric studies have been done for the required parameters and figured out the surface current distribution at different resonant frequencies within the working region. The MIMO antenna diversity performance is confirmed with low values of envelope correlation coefficient (ECC < 0.005), channel capacity losses (CCL < 0.04 bits/s/Hz), acceptable mean effective gain (MEG ≤ −3 dB, MEG ratio = 0 dB), and total active reflection coefficient (TARC ≤ −10 dB) values. The peak gain values are varying from 1.5 to 6.0 dBi, and the radiation efficiency values are above 83% for the entire operating region. The simulated and measured values are well matched.

show abstract

“…The antenna gives uniform omnidirectional radiation around the zenith direction. In order to analyze the isolation characteristics between antenna elements in the proposed model, envelope correlation characteristics are measured based on equation [24] given below. Figure 16 shows envelope correlation coefficient (ECC) curves measured for the proposed model with EBG and without EBG structures which are compared.…”

Section: Resultsmentioning

confidence: 99%

A Compact Mimo Antenna With Electromagnetic Bandgap Structure for Isolation Enhancement

Ravichandran¹,

Somasundaram²,

Rajkumar³

2021

PIER C

View full text Add to dashboard Cite

In this paper, a compact MIMO antenna with an electromagnetic bandgap structure is proposed for isolation enhancement. The proposed antenna design is coupled with an electromagnetic bandgap (EBG) structure to minimize mutual coupling between the antenna elements and to enhance the performance of the MIMO antenna configuration. The antenna is fabricated on an FR4 substrate having a dimension of (27.9 × 38 × 1.6 mm 3 ). The EBG structure is analyzed, and the effect on antenna performance is studied using parametric analysis. The antenna is fabricated, and the measured results are compared with simulated ones. The antenna achieves a reduction in transmission coefficient |S 21 | ≥ 16 dB for simulated and |S 21 | ≥ 25 dB for measured results, and attains the minimum ECC of 0.09 which is very close to the ideal value of zero and hence makes it a better choice for MIMO applications.

show abstract

A very compact and closely spaced circular shaped UWB MIMO antenna with improved isolation

Cited by 68 publications

References 14 publications

Design and analysis of on‐demand reconfigurable WiMAX / WLAN high isolation 2 × 2 MIMO antenna oriented adjacent/orthogonally for imaging applications in UWB‐X band

Design and analysis of on‐demand reconfigurable WiMAX / WLAN high isolation 2 × 2 MIMO antenna oriented adjacent/orthogonally for imaging applications in UWB‐X band

Design and analysis of a novel compact spanner‐shaped ultra‐wideband antenna for MIMO systems

A Compact Mimo Antenna With Electromagnetic Bandgap Structure for Isolation Enhancement

Contact Info

Product

Resources

About