Pattern diversity and isolation enhancement of UWB MIMO antenna based on characteristic modes for mobile terminals

Jayant, Shailesh; Srivastava, Garima; Kumar, Sachin

doi:10.1017/s1759078722000757

Cited by 6 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Various DTs to reduce mutual coupling are presented in the literature. For example, placing AEs at 90 • [37][38][39][40][41][42][43][44][45][46] and 180 • [47][48][49], introducing DS [50][51][52][53][54][55][56][57][58][59], NL [60,61], DGS [62][63][64], metamaterial [65][66][67], PE [68][69][70], CBF [71], and SES [72].…”

Section: Decoupling Techniques (Dts) In Ultra-wideband Mimo Antennas ...mentioning

confidence: 99%

“…High isolation was obtained by just placing AEs in a 180° location. In the article [49], the MIMO antenna was composed of dual UWB-based AEs. The antipodal Vivaldi and circular-shaped monopole element Figure 2.…”

Section: Placing Aes At 90 • and 180 •mentioning

confidence: 99%

“…High isolation was obtained by just placing AEs in a 180 • location. In the article [49], the MIMO antenna was composed of dual UWB-based AEs. The antipodal Vivaldi and circular-shaped monopole element were positioned on the two opposite edges of the rectangular-shaped ground surface, as presented in Figure 3c.…”

Section: Placing Aes At 90 • and 180 •mentioning

confidence: 99%

See 2 more Smart Citations

Decoupling Methods in Planar Ultra-Wideband Multiple-Input-Multiple-Output Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

Jayant,

Srivastava,

Kumar

et al. 2023

Electronics

Self Cite

View full text Add to dashboard Cite

Ultra-wideband (UWB) antennas cover a frequency range of 3.1 to 10.6 GHz and have sparked a lot of research interest as an essential part of wireless communication systems as they provide high data transmission speeds, are less expensive, and consume less power. UWB antennas are widely used in radar imaging, radio frequency identification, public security, and other high-accuracy positioning devices such as altimetry. Some smart applications of UWB antennas are vehicular radar systems, surveillance systems, software-defined radios, spectrum analysis, proximity fuses, etc. Multiple-input-multiple-output (MIMO) is a multiplexing technology that adopts multiple antennas both at the transmitter and receiver, which can enhance the channel capacity. MIMO technology is extensively used in several applications, such as in portable devices, wireless body area networks (WBANs), vehicular communication, and satellite–terrestrial networks. Generally, the MIMO antennas are used to obtain high reliability, high capacity, high throughput, and high security. The UWB MIMO antennas (UMAs) are considered the best choice for wireless communication systems as they offer reliability and wide transmission capacity, in contrast to unit antenna elements (AEs), without increasing system bandwidth or transmission power. The present-day and future communications systems need higher throughput to meet the demands of users. The signal transfer rate can be improved by improving channel bandwidth or increasing the number of receiving antennas. However, the main issue in designing UMAs is to provide high isolation between AEs because mutual coupling interactions between them affect the generated radiation patterns, leading to worse performance and failing to meet the operative constraints and requirements. When introducing decoupling techniques (DTs), researchers experience numerous challenges, including an increase in antenna size, design complexity, and cross-polarization. This article offers an organized review and simulated study of the various DTs in UMAs. The simulated study has been carried out through the implementation of various types of DTs on the same two-port UMA, which consists of two microstrip-fed circular-shaped AEs with open-end slotted partial ground. In contrast with previously reported review articles, this article provides a detailed study of various types of DTs reported so far and a better understanding for selecting appropriate DTs, which help in designing UMAs with better performance.

show abstract

Section: Decoupling Techniques (Dts) In Ultra-wideband Mimo Antennas ...mentioning

confidence: 99%

Section: Placing Aes At 90 • and 180 •mentioning

confidence: 99%

See 1 more Smart Citation

Decoupling Methods in Planar Ultra-Wideband Multiple-Input-Multiple-Output Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

Jayant,

Srivastava,

Kumar

et al. 2023

Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…A broadband bandwidth of 2.66-19.1 GHz is achieved using the microstrip line feeding method. In [18], two different UWB antenna elements are used to excite different modes, resulting in high isolation and a bandwidth of 2.6-11 GHz. An eye-shaped radiator is proposed to be printed on the top of the antenna, and a defective ground structure is etched on the bottom of the antenna to realize an impedance bandwidth of 32 GHz [19].…”

Section: Introductionmentioning

confidence: 99%

CPW Compact Ultra-Wideband MIMO Antenna for 5G Millimeter Wave Applications

Chang

Wang

et al. 2022

Preprint

View full text Add to dashboard Cite

This paper presents the design and development of a multiple-inputmultiple-output (MIMO) compact antenna with coplanar waveguide (CPW) feed for 5G millimeter-wave applications. It can be operated in the C (4-8 GHz), Ku (12-18 GHz), K (18-26.5 GHz), and Ka (27-40 GHz) with full coverage of the millimeter wave 5G New Radio (NR) n257/n258/n261 bands.The proposed antenna is designed with planar geometry with an element size of 14 mm×19 mm, which makes it compact and achieves a wide operating bandwidth. By the arrangement of orthogonal rotation, the 4-port structure is formed to realize good polarization diversity. The result shows that the MIMO antenna has a stable radiation pattern at the low-frequency band and offers an ultra-wide bandwidth (UWB) of 5-39 GHz (154.5%), isolation of more than 19 dB, and a total footprint of 40 mm×40 mm. ECC<0.04, DG>9.99, CCL<0.4, and MEG<-5 dB have been achieved. The prototype of MIMO is fabricated and measured, and the measured results are in good agreement with the simulation ones. Moreover, the operating mechanism is analyzed by equivalent RLC circuit and surface current distribution. This antenna can be used in a variety of ultra-wideband applications.

show abstract

“…Many of them deploy selective band-notch filtering techniques since wideband systems are susceptible to severe interferences, as they partially share the same channel bandwidths with several neighboring users [12]. Other design approaches for narrowband, dual-band, and broadband MIMO systems deploying spatial, frequency, or polarization diversity have also been reported [13,14].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a Triple-Band Multiple-Input–Multiple-Output Antenna for Sensing Applications

et al. 2022

Self Cite

View full text Add to dashboard Cite

In this article, a triple-band quad-element stacked multiple-input–multiple-output (MIMO) antenna is proposed for sensing applications. Each radiating element of the presented MIMO antenna consists of a diagonally truncated square patch, which is proximity coupled to the elliptical radiating patch. The proposed MIMO antenna is designed to resonate for three frequencies (4.2, 4.8, and 5.8 GHz) in the C-band range. The antenna shows circular polarization characteristics at 4.2 and 4.8 GHz frequencies. Each stacked element of the proposed antenna is excited independently through a 50 Ω coaxial feed. The Rogers RT Duroid/5880 dielectric substrate is used for the fabrication of two layers of the stacked MIMO antenna. The presented stacked MIMO antenna simulation and experimental outcomes are in good agreement.

show abstract

Pattern diversity and isolation enhancement of UWB MIMO antenna based on characteristic modes for mobile terminals

Cited by 6 publications

References 27 publications

Decoupling Methods in Planar Ultra-Wideband Multiple-Input-Multiple-Output Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

Decoupling Methods in Planar Ultra-Wideband Multiple-Input-Multiple-Output Antennas: A Review of the Design, State-of-the-Art, and Research Challenges

CPW Compact Ultra-Wideband MIMO Antenna for 5G Millimeter Wave Applications

Design and Development of a Triple-Band Multiple-Input–Multiple-Output Antenna for Sensing Applications

Contact Info

Product

Resources

About