High-Isolation UWB MIMO Antenna with Multiple X-Shaped Stubs Loaded between Ground Planes

Wang, Minghuan; Nan, Jingchang; Liu, Jing

doi:10.1155/2021/1155471

Cited by 13 publications

(11 citation statements)

References 31 publications

(23 reference statements)

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“…A low-profile UWB antenna structure supports WBAN applications [16][17][18][19][20]. The power handling capacity and ultra-wideband characteristics of MIMO antennas are further improved by adding DGS [21][22][23]. The two-radiating MIMO structure is stretched to an imposing four-element MIMO radiating structure by folding the arrays towards the antenna front side [24][25].…”

Section: Literature Surveymentioning

confidence: 99%

Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications

Sridhar¹,

Patteeswaran²

2023

Computer Systems Science and Engineering

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In this paper, the investigation of a novel compact 2 × 2, 2 × 1, and 1 × 1 Ultra-Wide Band (UWB) based Multiple-Input Multiple-Output (MIMO) antenna with Defected Ground Structure (DGS) is employed. The proposed Electromagnetic Radiation Structures (ERS) is composed of multiple radiating elements. These MIMO antennas are designed and analyzed with and without DGS. The feeding is introduced by a microstrip-fed line to significantly moderate the radiating structure's overall size, which is 60 × 40 × 1 mm. The high directivity and divergence characteristics are attained by introducing the microstripfed lines perpendicular to each other. And the projected MIMO antenna structures are compared with others by using parameters like Return Loss (RL), Voltage Standing Wave Ratio (VSWR), Radiation Pattern (RP), radiation efficiency, and directivity. The same MIMO set-up is redesigned with DGS, and the resultant parameters are compared. Finally, the Multiple Input and Multiple Output Radiating Structures with and without DGS are compared for result considerations like RL, VSWR, RP, radiation efficiency, and directivity. This projected antenna displays an omnidirectional RP with moderate gain, which is highly recommended for human healthcare applications. By introducing the defected ground structure in bottom layer the lower cut-off frequencies of 2.3, 4.5 and 6.0 GHz are achieved with few biological effects on radio propagation in human body communications. The proposed design covers numerous well-known wireless standards, along with dual-function DGS slots, and it can be easily integrated into Wireless Body Area Networks (WBAN) in medical applications. This WBAN links the autonomous nodes that may be situated either in the clothes, on-body or beneath the skin of a person. This system typically advances the complete human body and the inter-connected nodes through a wireless communication channel.

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Section: Literature Surveymentioning

confidence: 99%

Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications

Sridhar¹,

Patteeswaran²

2023

Computer Systems Science and Engineering

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“…Moreover, two L-shaped parasitic branches are added on the surface of the dielectric substrate with the goal of improving the mutual coupling at lower frequency (3–3.4 GHz) and the impedance matching performance. In [ 36 ], a MIMO antenna is made up of two identical antenna elements that are symmetrically arranged in opposite directions on the same dielectric substrate. High isolation and good impedance matching are accomplished by loading three X-shaped stubs between two disconnected ground planes.…”

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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“…High isolation and good impedance matching are accomplished by plugging three crossed stubs between two disconnected ground planes. This UWB MIMO antenna's working frequency band is 1.9-14 GHz, and the isolation is preserved at 20.2 dB throughout the analysis frequency band [23].…”

Section: Literature Reviewmentioning

confidence: 99%

Bandwidth Enhancement Technique for Microstrip Antenna for Higher X-Band and Ku-Band for Next Generation Wi-Fi and Wi-max Applications

Tiwari

Malik

Kaur

2022

J. Phys.: Conf. Ser.

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This paper presents the novel design and fabrication of a square shaped array antenna for transmission in the higher X band and Ku-band. The influence of the constituent square’s size factor over the signal quality with the squares positioned in various array configurations is recorded and reported using a discretized design approach. The design was fabricated and tested to meet the needed standards after being optimized using the antenna simulator software. A novel DC shorting approach has been devised and reported to improve antenna performance. Major antenna performance parameters are being observed and found in accord with the literature.

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High-Isolation UWB MIMO Antenna with Multiple X-Shaped Stubs Loaded between Ground Planes

Cited by 13 publications

References 31 publications

Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications

Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications

MIMO Antennas: Design Approaches, Techniques and Applications

Bandwidth Enhancement Technique for Microstrip Antenna for Higher X-Band and Ku-Band for Next Generation Wi-Fi and Wi-max Applications

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