Compact high isolation UWB MIMO antennas

Ahmed, Bazil Taha; Rodríguez, Iván Fernández

doi:10.1007/s11276-022-02951-9

Cited by 15 publications

(3 citation statements)

References 34 publications

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“…In [ 33 ], four drop-shaped slot antennas are placed perpendicular to one another but in separate layers to limit the transmission of the surface current to the other radiators for improving the isolation. Seven vertical metallic barriers are placed on the front side of the antenna and two L-shaped stubs along with a vertical metallic barrier printed on the back side to strengthen the isolation between the two radiating elements [ 34 ]. In addition to that, a circular radiating patch with a small hemisphere on the top of the circle is utilized to achieve wider bandwidth.…”

Section: Ultra-wideband (Uwb) Mimo Antenna Designsmentioning

confidence: 99%

MIMO Antennas: Design Approaches, Techniques and Applications

Sharma

Tiwari²,

Singh

et al. 2022

Sensors

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The excessive use of digital platforms with rapidly increasing users in the wireless domain enforces communication systems to provide information with high data rates, high reliability and strong transmission connection quality. Wireless systems with single antenna elements are not able to accomplish the desired needs. Therefore, multiple-input multiple-output (MIMO) antennas are getting more attention in modern high-speed communication systems and play an essential part in the current generation of wireless technology. However, along with their ability to significantly increase channel capacity, it is a challenge to achieve an optimal isolation in a compact size for fifth-generation (5G) terminals. Portable devices, automobiles, handheld gadgets, smart phones, wireless sensors, radio frequency identification and other applications use MIMO antenna systems. In this review paper, the fundamentals of MIMO antennas, the performance parameters of MIMO antennas, and different design approaches and methodologies are discussed to realize the three most commonly used MIMO antennas, i.e., ultra-wideband (UWB), dual-band and circularly polarized antennas. The recent MIMO antenna design approaches with UWB, dual band and circularly polarized characteristics are compared in terms of their isolation techniques, gain, efficiency, envelope correlation coefficient (ECC) and channel capacity loss (CCL). This paper is very helpful to design suitable MIMO antennas applicable in UWB systems, satellite communication systems, GSM, Bluetooth, WiMAX, WLAN and many more. The issues with MIMO antenna systems in the indoor environment along with possible solutions to improve their performance are discussed. The paper also focuses on the applications of MIMO characteristics for future sixth-generation (6G) technology.

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Section: Ultra-wideband (Uwb) Mimo Antenna Designsmentioning

confidence: 99%

MIMO Antennas: Design Approaches, Techniques and Applications

Sharma

Tiwari²,

Singh

et al. 2022

Sensors

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“…The diversity characteristics of a MIMO antenna system are discussed and compared with reported literature, shown in Table 1. Compared to other MIMO antennas [17][18][19][20][21][22][23], the dimension of the discussed antenna is 25 × 12.5 × 0.8 mm 3 which is found to be very compact. Among the results, the proposed peak gain of the MIMO antenna is 5.2, 3.8 dBi apart from [21,22].…”

Section: Introductionmentioning

confidence: 98%

Ringing Phenomenon-based Circularly Polarized MIMO Antenna for Ku/K Band Communication

Singh¹,

Pandey²,

Singh³

et al. 2022

PIER C

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A compact size UWB circularly polarized (CP) dual-port MIMO antenna is designed for Ku/K band applications. The proposed antenna contains a revised circle-shaped slot from the radiation patch on the front-side and a stepped-feed line on the back-side of the substrate. The orthogonal position of the antenna ports allows us to produce isolation of more than 30 dB and has a (−10 dB) impedance bandwidth of 68% (14.3-29.3 GHz) at two resonant frequencies 15.6 GHz and 24.7 GHz, respectively. 3 dB ARBW in the operating bands is 14.6% and 6.7%, respectively. The total size of the MIMO antenna is 0.1λ × 0.05λ × 0.003λ mm 3 at a lower frequency. Diversity characteristics like ECC, DG, TARC, & CCL are determined to confirm the MIMO antenna's work qualities. Ringing resonating frequencies are observed at lower operating bands and are responsible for gain degradation. The proposed antenna has excellent characteristics for satellite and NASA's Tracking Data Relay Satellite application.

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“…Wideband and high isolation features for a particular MIMO antenna is a challenging task. In [2], eight radiating elements accommodated in a precise imprint, each pair of radiating elements are placed in orthogonal configuration. An annular-reflector conjoined with the ground plane to enhance the isolation.…”

Section: Introductionmentioning

confidence: 99%

Low-Profile CO-CSRR and EBG Loaded Tri-Quarter Circular Patch EWB MIMO Antenna With Multiple Notch Bands

Roy

2024

IEEE Open J. Antennas Propag.

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A novel and miniaturized design featuring a Co-directional Complementary Split Ring Resonator (CO-CSRR) loaded Tri-Quarter Circular (TQC) Extremely Wideband (EWB) Multiple-Input Multiple-Output (MIMO) antenna has been developed and simulated. This proposed antenna demonstrates high isolation and exhibits multiple notch characteristics. The configuration consists of two TQC patches positioned adjacent to each other with a common partial ground plane (PGP), achieving an Extremely Wideband (EWB) capability of 85.8 GHz. Additionally, two elliptical CO-CSRRs are etched on the TQC elements to introduce dual-notch characteristics in the X-band and Ku-band. The integration of two Electromagnetic Band Gap (EBG) structures on either side of the microstrip feedline facilitates the creation of notch frequency ranges at Q-band downlink and V-band. To enhance isolation, a slotted meandering strip is extruded to the PGP. This design primarily focuses on achieving EWB with a compact size and reduced complexity. The overall physical volume of the proposed design is 2.74 λ o × 4.83 λ o × 0.25 λ o , achieved a maximum |S 11 | of 30.82 dB at a frequency of 17.58 GHz. The antenna's performance has been thoroughly evaluated in terms of radiation pattern, isolation, Total Active Reflection Coefficient (TARC), Envelope Correlation Coefficient (ECC), Diversity Gain (DG), Gain, and Efficiency. Stable gain and Group Delay (GD) of less than 0.2 ns for the entire Extremely Wideband (EWB) range have been achieved, with lower gain observed at the notch bands.

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Compact high isolation UWB MIMO antennas

Cited by 15 publications

References 34 publications

MIMO Antennas: Design Approaches, Techniques and Applications

MIMO Antennas: Design Approaches, Techniques and Applications

Ringing Phenomenon-based Circularly Polarized MIMO Antenna for Ku/K Band Communication

Low-Profile CO-CSRR and EBG Loaded Tri-Quarter Circular Patch EWB MIMO Antenna With Multiple Notch Bands

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