Modified U-Shaped Resonator as Decoupling Structure in MIMO Antenna

Iqbal, Amjad; Altaf, Ahsan; Abdullah, Mujeeb; Alibakhshikenari, Mohammad; Limiti, Ernesto; Kim, Sung Hwan

doi:10.3390/electronics9081321

Cited by 48 publications

(29 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microstrip technology was used for implementation of the proposed filter. This technology has several advantages, such as low fabrication cost, planar configuration and ease of integration with other Radio Frequency (RF) components; hence, it has been widely used in microwave component designs, including filters [30,31], metasurfaces [32][33][34], power dividers [35][36][37], phase shifters [38] and antennas [39][40][41][42]. The LCE circuit is used to locate the transmission zeros (TZs) of the resonator.…”

Section: Initial Low-pass Filtermentioning

confidence: 99%

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

et al. 2021

View full text Add to dashboard Cite

In this paper, a lowpass filter is designed using half elliptical resonators with a wide stopband. New formulas are presented to achieve a circuit model for the half elliptical resonators used in this work. Additionally, the transfer function and transmission zero equations are used to adjust the frequency of the transmission zeros of the filter. The cut-off frequency of the lowpass filter is 1.26 GHz with a sufficiently large stopband, extending from 1.48 GHz to 20 GHz. The proposed filter’s figure of merit is 62,520, demonstrating its outperformance compared to the state of the art. The filter is implemented on a RT-5880 substrate with a constant dielectric of 2.2, thickness of 31 mil and loss tangent of 0.0009. The LPF was fabricated and tested, showing good agreement between the simulated and measured results.

show abstract

Section: Initial Low-pass Filtermentioning

confidence: 99%

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The future generation communication systems demand the high data rate, low cost, efficient, and less complex approaches to handle the exponential increase in the number of users [1]. Thus, the fifth generation (5G) of communication technology has become a promising candidate for the said systems [2,3].…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of a Printed Tri-Band Antenna for 5G Applications Operating across Ka-, and V-Band Spectrums

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this paper, an umbrella-shaped patch antenna for future millimeter-wave applications for the 5G frequency band is presented. The proposed antenna resonates at multiple frequency bands, i.e., 28 GHz, 38 GHz, and 55 GHz (V-band) that have been globally allocated for 5G communications systems. The proposed antenna is designed using Rogers RT/duroid 5870, with a relative permittivity, loss tangent and thickness of 2.33 mm, 0.0012 mm and 0.79 mm, respectively. The antenna has an overall size of 8 mm × 8 mm which correspond to 0.7 λ × 0.7 λ, where λ is free space wavelength at the lowest resonance. Moreover, the wide bandwidth, high gain and tri band operational mode is achieved by introducing two stubs to the initial design. The antenna prototype was fabricated and validated experimentally. The comparison of the simulated and measured results demonstrates a good correlation. Additionally, the comparative analysis with state of the art work demonstrates that the proposed antenna offers compact size, simple geometrical configuration, wide bandwidth, high gain, and radiation efficiency which makes the proposed antenna a potential candidate for compact smart 5G devices.

show abstract

“…To make the MIMO system work normally, it is necessary to reduce the correlation of the antenna elements in the system [1]. For this reason, several methods for reducing the correlation between elements in an antenna array in a MIMO system have been proposed, for example, defect ground structure decoupling [2,3], parasitic stub decoupling [4][5][6], neutralization line decoupling [7][8][9], diversity technology decoupling [10][11][12], and electromagnetic band-gap (EBG) structure decoupling [13,14].…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Nan

Liu

2021

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

A miniaturized ultra-wideband multiple-input multiple-output (UWB MIMO) two-port antenna with high isolation based on FR4 is designed in this article. The size of the antenna is only 18 × 28 × 1.6 mm3. The MIMO antenna consists of two identical antenna elements symmetrically placed on the same dielectric substrate in opposite directions. By loading three crossed X-shaped stubs between two unconnected ground planes, high isolation and good impedance matching are achieved. The working frequency band measured by this UWB MIMO antenna is 1.9–14 GHz, and the isolation is kept above 20.2 dB in the whole analysis frequency band. Good radiation characteristics as well as envelope correlation coefficient (ECC, <0.09), mean effective gain (MEG), and channel capacity loss (CCL) in the passband meet the requirements of the application, which can be applied to the UWB wireless communication system. To verify the applicability of the proposed method for enhancing the isolation between antenna elements, the two-port antenna structure was extended to a four-port antenna structure. In the case of loading the X-shaped stubs to connect to the ground plane, the isolation of the antenna is maintained above 15.5 dB within 1.7–14 GHz.

show abstract

Modified U-Shaped Resonator as Decoupling Structure in MIMO Antenna

Cited by 48 publications

References 35 publications

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

Half-Elliptical Resonator Lowpass Filter with a Wide Stopband for Low Band 5G Communication Systems

Design and Fabrication of a Printed Tri-Band Antenna for 5G Applications Operating across Ka-, and V-Band Spectrums

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

Contact Info

Product

Resources

About