Circular Monopole Ultra-Wideband (UWB) Antenna with Reconfigurable Band-Notched Characteristics

Din, Iftikhar Ud; Ullah, Shakir; Ullah, Kifayat; Fawad, Yasir; Ahmad, Imran; Ullah, Sadiq; Habib, Usman

doi:10.1109/inmic50486.2020.9318099

Cited by 7 publications

(2 citation statements)

References 14 publications

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“…In addition, the limitation of this technique is that as the substrate thickness increases surface wave increase which narrow the bandwidth. 33,34 Then in the second step, the top surface circular patch remain unchanged and the bottom surface is modified and make a rectangular slot in the ground plane. In third step, the top surface radiating patch is changed and making two round-shaped cuts at the edges of circular patch and the ground plane remain unchanged with rectangular slot.…”

Section: Single Element Antennamentioning

confidence: 99%

“…Finally, the proposed design is further modified and make third slot at the upper edge of circular radiating patch with same bottom plane, enabling them resonance at 28 GHz. The following mathematical equations guided the designing of dimension of radiating element and radius of the circular patch antenna of the proposed antenna 33 :…”

Section: Single Element Antennamentioning

confidence: 99%

See 1 more Smart Citation

Metamaterial‐based highly isolated MIMO antenna system for 5G smartphone application

Din¹,

Ullah²,

Mufti³

et al. 2022

Int J Communication

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A two-port multiple-input-multiple-output (MIMO) antenna system operating in the mm-wave band for 5G applications is presented. The two elements of MIMO structure are separated from each other by 19 mm (1.9λ) and excited by microstrip feed. The MIMO elements are circular patches with round cuts at the edges to improve impedance bandwidth. Quadrilateral slot in the ground plane is designed to improve the radiation characteristics of the radiating element having size 18 Â19Â 0.8 mm 3 . The MIMO design is simulated through CST. The proposed antenna works in 27-29 GHz range, providing a potential bandwidth of 2 GHz. Furthermore a gain is improved from 8.2 to 8.75 dB and efficiency increase from 85% to 88% and high isolation of 64 dB is achieved by placing 4-elements of metamaterial with size 4.5 Â 18 mm 2 in the middle of two circular monopole antennas. The metamaterial gives us a band stop response and act as decoupler and enhance the isolation to reduce mutual coupling. By analyzing the radiation characteristics of the proposed design, in term of reflection coefficient, surface currents, reduced mutual coupling, suitable gain, envelope correlation coefficient (ECC), diversity gain (DG) and radiation pattern, the recommended antenna can be considered a good candidate for 5G applications.

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Section: Single Element Antennamentioning

confidence: 99%

Section: Single Element Antennamentioning

confidence: 99%

Metamaterial‐based highly isolated MIMO antenna system for 5G smartphone application

Din¹,

Ullah²,

Mufti³

et al. 2022

Int J Communication

Self Cite

View full text Add to dashboard Cite

show abstract

A miniaturized reconfigurable unlicensed ultra‐wideband antenna with multiple band‐notch performance

Han

Chen

Han

et al. 2021

Int J RF Mic Comp-Aid Eng

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This paper presents a compact reconfigurable ultra-wideband antenna with multiple band-notch characteristic. The truncated corners in the rectangular patch are employed to realize the desired ultra-wideband (UWB) operation. The band-notch property in the 3.5 GHz WiMAX and 5.2 GHz WLAN bands are obtained by the conventional C-shaped slots in the radiating patch, and the band-notch performance in the 7.5 GHz X-band is especially realized by introducing a parasitic meandering strip beneath the ground. The reconfigurable band-notch function is achieved by controlling the states of the PIN diodes inserted in the band-notch structures. The overall dimension of the antenna is 19.5 mm × 14 mm. The simulation and experiment results confirm that the antenna can switch between a UWB state, three single band-notch states, three dual band-notch states and a triple band-notch state. Moreover, stable radiation patterns are exhibited.

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High-Isolation Array Antenna Design for 5G mm-Wave MIMO Applications

Abbasi,

Virdee,

Din

et al. 2024

J Infrared Milli Terahz Waves

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A low form-factor design of an eight-element antenna array is presented for 5G mm-wave MIMO applications. The design features modified circular patch radiators that achieve an impedance bandwidth of 2.6 GHz, covering frequencies from 37.7 to 40.3 GHz. The radiating elements are strategically arranged on opposite sides of a common substrate and interleaved to significantly reduce mutual coupling between adjacent elements. This innovative technique effectively minimizes coupling between the array’s radiators without the need of a decoupling structure. The MIMO antenna is fabricated on a low-loss Rogers-5880 substrate, with a thickness of 0.8 mm, a dielectric constant of 2.2, and a loss tangent of 0.0009, ensuring minimal signal loss and confirming the accuracy of simulation results. The inter-element isolation exceeds 25 dB, and the array provides a gain greater than 6 dBi, with a peak gain of 7.5 dBi at 39 GHz. This high gain enhances the antenna’s ability to mitigate atmospheric attenuation at higher frequencies, making it highly suitable for 5G mm-wave applications.

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Circular Monopole Ultra-Wideband (UWB) Antenna with Reconfigurable Band-Notched Characteristics

Cited by 7 publications

References 14 publications

Metamaterial‐based highly isolated MIMO antenna system for 5G smartphone application

Metamaterial‐based highly isolated MIMO antenna system for 5G smartphone application

A miniaturized reconfigurable unlicensed ultra‐wideband antenna with multiple band‐notch performance

High-Isolation Array Antenna Design for 5G mm-Wave MIMO Applications

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