Reduction of Mutual Coupling in UWB/MIMO Antenna Using Stub Loading Technique

Jabire, Adamu Halilu; Abdu, Anas; Saminu, Sani; Salisu, Sani; Sadiq, Abubakar Muhammad; Adamu, Mohammed Jajere; Ahmed, Yusuf Kola

doi:10.2478/ecce-2021-0002

Cited by 11 publications

(5 citation statements)

References 20 publications

(19 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conventional ultra-wideband planar antennas listed in table 2 that have been reviewed in the literature are contrasted with the novel MIMO monopole antenna. The comparison table demonstrates that the modern 1 × 2 array antenna has a smaller electrical size than the MIMO antennas covered in more recent researches [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Additionally, the dual diversity parallel planar antenna proposals a higher gain of 5.96dBi at the operational frequency of 11.98 GHz, a small value of ECC, and a good isolation outcomes in comparison to all references.…”

Section: Mimo Antenna Design Proceduresmentioning

confidence: 82%

“…The height (L) and radius (r) values of an equivalent cylindrical monopole antenna can be used to calculate the dimensions of the planned UWB antenna using equation (1). Additionally, the value of e eff is calculated using the fundamental equation (2) in order to arrive at the constant value of k [25]. The theoretical low operating frequency should be 2.66 GHz for the prototype antenna according to the results obtained from the applied equations.…”

Section: Antenna Design Sketchmentioning

confidence: 99%

“…Mutual coupling, which happens when the antenna parts interact electromagnetically, is a critical component of the MIMO antenna design [20]. With the exception of [22] and [23], the reported works [21][22][23][24][25] have a decent isolation value when considered separately, but the antennas' overall size is a little bit big. The antenna will be unsuitable for a compact application by using an additional part for the size of the device.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A tapered feed UWB-MIMO antenna with high characteristics based on fractal method

Sediq

2023

Phys. Scr.

View full text Add to dashboard Cite

A miniaturized antenna based on fractal method and Tapered-feeder technique for ultra-wideband (UWB) applications is developed in this research. The structure of the component cell monopole antenna is designed by using a half circle-shaped fractal method and merging material implementation with the L-stub shape. These techniques provide a wide impedance bandwidth for the innovative wireless antenna with high characteristics, which operates from 2.73 to 12.21 GHz. The planned module cell dimensions are 20 by 16 square millimetres ( 0.181 λ L × 0.145 λ L ), where the wavelength ( λ L ) is 110 mm. This low-profile antenna has then been employed to design an array of 1 × 2 Multi Input Multi Output (MIMO) antennas with an overall size of 20 ×34 mm 2 . Two symmetric geometries are arranged in the designed miniaturized MIMO system with an inverted T-shaped decoupling copper between them. Measurement results show that the dual antenna with multiple diversity metrics has great characteristics for MIMO applications due to providing low mutual coupling value, lower than 0.33 bits per s./Hz of channel capacity loss, minor envelope correlation coefficient of fewer than 0.005, lower −11 dB of total active reflection coefficient, greater than 9.93 dB of diversity gain and proper mean effective gain (MEG ratio≈1, MEG ≤ 0.5). A high peak gain magnitude of 5.42 dBi is provided at an operating frequency of 10.5 GHz for the recommended single antenna.

show abstract

Section: Mimo Antenna Design Proceduresmentioning

confidence: 82%

Section: Antenna Design Sketchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A tapered feed UWB-MIMO antenna with high characteristics based on fractal method

Sediq

2023

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Aiming at UWB applications, the work proposed in [76] uses circular-shaped monopoles. The strategy is to insert stubs between the two antenna elements in the ground plane.…”

Section: ) Stubsmentioning

confidence: 99%

A Review on Mutual Coupling Reduction Techniques in mmWaves Structures and Massive MIMO Arrays

Ramos,

Varum,

Matos

2023

IEEE Access

View full text Add to dashboard Cite

In the most recent years multiple-input multiple-output (MIMO) antennas have been widely implemented to take advantage of the opportunity in controlling their radiation pattern and/or polarization in overcoming modern telecommunication systems issues. High levels of mutual coupling can lead to great degradation of an antenna's performance and as such, the study of solutions to minimize its impact was encouraged. This paper provides a literature review of the mutual coupling analysis and its possible mitigation techniques in various systems including massive multiple-input multiple-output (MIMO) systems and mmWaves antennas. Besides going through the main decoupling techniques, this letter compares the different achievements with the respective approaches, and it even allows the understanding of the main advantages and downsides of each one of the techniques studied.

show abstract

“…A sufficient distance between nearby patches is required to reduce mutual coupling [4]. To solve this problem, several methods have been explored to reduce mutual coupling, such as an electromagnetic band gap (EBG) structure [5][6][7], defected ground structure (DGS) [8,9], neutralization lines [10], stub loading technique [11], slots [12], meta-material [13], and resonator structures [14]. A wide-band two-port circularly polarized MIMO printed antenna is obtained by designing the ground plane and employing asymmetric Z-shaped radiating patches to improve isolation [15].…”

Section: Introductionmentioning

confidence: 99%

Designed Circularly Polarized Two-Port Microstrip MIMO Antenna for WLAN Applications

Khan

Ullah

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

The proposed work describes a corner square-cut square-patch multiple-input multiple-output (MIMO) antenna with reduced mutual coupling for circular polarization (CP). A two-port MIMO-CP antenna was designed and operated at 5.6 GHz for wireless local area network (WLAN) applications. The dimensions of the MIMO-CP antenna were 22.5×50mm2(0.43λ0×0.933λ0) and the FR4 substrate height was 1.6 mm. Between the two-elements, the edge-to-edge distance was 12.2 mm (0.227 λ0), where λ0 was the free space wavelength at 5.6 GHz. A slot was created in the middle of the ground in the proposed MIMO antenna to reduce mutual coupling and improve CP. The ground slot improves impedance matching and provides a better S-parameter and axial ratio (AR), according to the antenna results. According to the simulated results, the proposed antenna bandwidth of 5.23–6.42 GHz (21.4%) for S11 were <−10 dB, isolation was −37 dB with a peak gain of 6 dB and AR ≤3 dB from 5.37 to 5.72 GHz (6.25%). The proposed antennas are simple to fabricate, have low profiles, are inexpensive, have good isolation, and are CP. The diversity gain (DG) and envelop correlation coefficient (ECC) results are better in the simulated frequency band. A MIMO-CP antenna geometry prototype is built and measured for comparison, yielding good results when compared to the simulated and measured results. The MIMO-CP antenna, as designed, is suitable for WLAN applications.

show abstract

Reduction of Mutual Coupling in UWB/MIMO Antenna Using Stub Loading Technique

Cited by 11 publications

References 20 publications

A tapered feed UWB-MIMO antenna with high characteristics based on fractal method

A tapered feed UWB-MIMO antenna with high characteristics based on fractal method

A Review on Mutual Coupling Reduction Techniques in mmWaves Structures and Massive MIMO Arrays

Designed Circularly Polarized Two-Port Microstrip MIMO Antenna for WLAN Applications

Contact Info

Product

Resources

About