High Performance Circularly Polarized MIMO Antenna with Polarization Independent Metamaterial

Kumar, A. S. Kiran; Agrawal, Tanvi

doi:10.1007/s11277-020-07843-9

Cited by 12 publications

(10 citation statements)

References 17 publications

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“…In long-distance communication, circular polarization reduces the losses carried on by polarization mismatch. Additionally, circularly polarized antennas will reduce the spread of multipath propagation delays [ 68 ]. CP antennas are rapidly becoming a key component for a wide range of wireless systems, including satellite communications, mobile communications, wireless sensors, radio frequency identification (RFID), wireless power transmission, WLAN [ 69 ], wireless personal area networks (WPAN) and global navigation satellite systems (GNSS) [ 70 ].…”

Section: Circularly Polarized Mimo Antenna Design Approachesmentioning

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: Circularly Polarized Mimo Antenna Design Approachesmentioning

confidence: 99%

MIMO Antennas: Design Approaches, Techniques and Applications

Sharma

Tiwari²,

Singh

et al. 2022

Sensors

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“…Also, various techniques were implemented to achieve diferent polarizations that still exhibit narrow ARBW of less than 10% and are large in size with a single element. Very few CP MIMO antennas were reported in [13][14][15][16][17][18] with an effective ARBW greater than 10%. In [13], a quad port CP antenna covers both RHCP and LHCP for the operating frequency of the 5G band from 3.4 to 3.8 GHz with 11.1% ARBW, however, not reconfgurable.…”

Section: Introductionmentioning

confidence: 99%

Quad Port Multipolarized Reconfigurable MIMO Antenna for Sub 6 GHz Applications

Thangarasu

Palaniswamy

Rao

2023

International Journal of Antennas and Propagation

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Recent reconfigurable technological advancements for wireless communication systems provide various global solutions. This research work presents a quad port multipolarized switchable multiple input multiple output (MIMO) antenna for sub 6 GHz applications. It covers the frequency range from 3.1 to 5.1 GHz, including the 5G NR band n78 (3.3 to 3.8 GHz) and 5G NR band n79 (4.4 to 5 GHz). The proposed antenna comprises four offset-fed monopole antenna elements with an overall dimension of 60 mm × 65 mm. To achieve circular polarization (CP), a parasitic meandering resonator is integrated with antenna elements using four PIN diodes. The polarization diversity is obtained by controlling the bias states of four PIN diodes. The radiating element −1/−3 offers left hand circular polarization (LHCP), while element −2/−4 procures right hand circular polarization (RHCP) when all diodes are ON. Consequently, the proposed antenna provides linear polarization (LP) under reverse bias conditions. Moreover, the designed antenna acquires a wide axial ratio bandwidth (ARBW) of 36.1%. In addition, the developed MIMO antenna exhibits isolation greater than 15 dB using the common ground plane, and the obtained ECC is less than 0.13. The prototype is fabricated, and the simulated responses are in good correlation with the measured results.

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“…Some design methods for MIMO antennas have been discussed above, and methods for enhancing isolation have also been briefly mentioned. The following is a summary of currently used decoupling methods [29][30][31][32][33][34][35][36][37][38][39]. [29][30][31] utilized slots in the middle of ground to form defective ground to reduce mutual coupling.…”

Section: Introductionmentioning

confidence: 99%

“…[29][30][31] utilized slots in the middle of ground to form defective ground to reduce mutual coupling. [32] placed the antenna units orthogonally and effectively improved isolation. [33][34][35] used open-stubs to enhance isolation.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Circularly Polarized MIMO Antenna with Enhanced Isolation for Ultra-wideband Communication

2022

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In this paper, we propose a circularly polarized (CP) ultra-wideband (UWB) MIMO antenna. Compared with common linearly polarized (LP) UWB antenna, the proposed antenna can excite circular polarization (CP) mode for WLAN communication and its impedance bandwidth can also fully cover UWB spectrum. It consists of identical circularly polarized antennas. Each unit adopts circular monopole with extended orthogonal rectangle patch to realize broadband and symmetrical rectangular ground with slot in the diagonal of each antenna unit to achieve circular polarization for WLAN band. It has a very compact size and the dimension is 25 × 51 × 0.8 mm3. The impedance bandwidth of the proposed antenna is from 3.1 GHz to 13.5 GHz, with average gain of 4 dBi, fully covering UWB bandwidth and enhanced by 38%. At the same time, circular polarization is achieved by embedding two symmetrical rectangular slot structures in the two opposite corners of every antenna unit. The extended orthogonal rectangle patch is introduced to enhance impedance bandwidth and broaden axial ratio (AR) bandwidth. The measured 3 dB axial ratio (AR) bandwidth is 1.8 GHz (4.7-6.5 GHz), fully covering WLAN band. Meanwhile, the slit slot between antenna units and rectangular openings are introduced to achieve high isolation. The proposed antenna keeps ECC (envelope correlation coefficient) below 0.01, which showing good isolation and diversity characteristics. The proposed antenna can simultaneously operate in the UWB spectrum and exhibit circularly polarized (CP) radiation characteristic in WLAN.

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High Performance Circularly Polarized MIMO Antenna with Polarization Independent Metamaterial

Cited by 12 publications

References 17 publications

MIMO Antennas: Design Approaches, Techniques and Applications

MIMO Antennas: Design Approaches, Techniques and Applications

Quad Port Multipolarized Reconfigurable MIMO Antenna for Sub 6 GHz Applications

Design of a Novel Circularly Polarized MIMO Antenna with Enhanced Isolation for Ultra-wideband Communication

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