A Compact Broadband Cross-Shaped Circularly Polarized Planar Monopole Antenna With a Ground Plane Extension

Gyasi, Kwame Oteng; Wen, Guangjun; Inserra, Daniele; Huang, Yongjun; Li, Jian; Ampoma, Affum Emmanuel; Zhang, Haobin

doi:10.1109/lawp.2018.2789430

Cited by 73 publications

(43 citation statements)

References 14 publications

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“…It should be noticed that Refs. 35, 36, 38, and 40 have higher ARBW but lower impedance bandwidth compared with proposed antenna. So, the result of the proposed antenna structure is more superior to other.…”

Section: Resultsmentioning

confidence: 92%

Wide‐bandwidth multifrequency circularly polarized monopole antenna for wireless communication applications

Bag

Biswas

et al. 2018

Int J RF Microw Comput Aided Eng

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In this article, wideband circularly polarized monopole antennas with multiresonating frequencies are presented for Bluetooth, WLAN, WiMAX, and X‐band applications. The designed antennas have dimensions of 50 × 35 × 1.6 mm3. Two different substrates (FR4‐epoxy and PTFE) are used for fabricating the antennas. The antennas consist of corner truncated I‐shaped and C‐shaped strips excited by a 50 Ω microstrip feed line. The parametric analyses are performed with the help of Ansoft HFSS V.11 EM simulator. Both antennas have been fabricated and measured. The measured percentage bandwidth of the antenna made by FR4 substrate is 31.32% (centered at 1.66 GHz), and 64.85% (centered at 5.69 GHz). The percentage bandwidth of antenna made by PTFE substrate is 20.57% (centered 2.43 GHz) and 68.74% (centered at 7.39 GHz). In addition to that, there exists 3 dB AR bandwidth for LHCP of about 1050 MHz for 5.2 GHz WLAN‐band. The reflection coefficient, radiation patterns, and the gains of both the antennas are studied in detail. It is found that the measured and simulated results are in good agreement.

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Section: Resultsmentioning

confidence: 92%

Wide‐bandwidth multifrequency circularly polarized monopole antenna for wireless communication applications

Bag

Biswas

et al. 2018

Int J RF Microw Comput Aided Eng

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“…However, multiple fed antennas provide, in general, broader bandwidths than single fed antennas . Recently, there are some single fed CP antenna designs to achieve broadband CP operation, such as monopole antennas, coplanar‐waveguide (CPW) feed antennas, metamaterial antennas, wide slot antennas, and crossed dipole antennas …”

Section: Introductionmentioning

confidence: 99%

“…A cross‐shaped planar antenna with a ground plane extension has been offered to achieve CP bandwidth 42.6% in Reference . In Reference , a compact broadband CP antenna with bandwidth of 53.92% is designed by protruding a G‐shaped parasitic strip into a C‐shaped monopole antenna structure.…”

Section: Introductionmentioning

confidence: 99%

“…However, multiple fed antennas provide, in general, broader bandwidths than single fed antennas. 1 Recently, there are some single fed CP antenna designs to achieve broadband CP operation, such as monopole antennas, [2][3][4] coplanar-waveguide (CPW) feed antennas, 5 metamaterial antennas, [6][7][8][9][10][11] wide slot antennas, [12][13][14][15] and crossed dipole antennas. 16,17 A cross-shaped planar antenna with a ground plane extension has been offered to achieve CP bandwidth 42.6% in Reference 3.…”

Section: Introductionmentioning

confidence: 99%

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A small single fed broadband circularly polarized slot antenna

Huang

Zhang

2020

Int J RF Microw Comput Aided Eng

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In this research, we present a simple single fed small broadband circularly polarized (CP) antenna. The proposed structure has the advantage of simultaneously obtaining broadband ARBW and IMBW in a small size (0.64λ × 0.62λ × 0.01λ), where λ is the free‐space wavelength at the center frequency. The measured S11 BW is 100% (2.15‐6.44 GHz), which is completely overlapped by the measured ARBW of 108.7% (2.09‐7.07 GHz), which are wider than most published papers. The antenna consists of an off‐center microstrip feed line, an inverted rectangular bracket‐shape (IRBS) parasitic strip, and a modified ground plane. The modified ground plane has three linked slots and a protruded L‐shaped stub (LSS). The IRBS parasitic strip and the feed line are on one side of the substrate, whereas the ground plane is on the other side. The IRBS and LSS are overlaid up and down. The novelties of the structure are that the design mechanics is simple and clear as follows: (a) The three linked slots make the ground asymmetrical, and the asymmetrical ground makes the broadband IMBW in a small size preliminarily formed. Though the AR is around 8 dB, the fluctuation of AR inside the operation frequency band is little. (b) The off‐center feeding line, IRBS parasitic strip, and the LSS chain together through capacitance coupling, and the current path is formed, then the AR below 3 dB in the whole frequency band is generated. The peak gain and radiation efficiency are of 5.5 dBi and 95%, respectively. The proposed antenna is a good candidate for the application of various wireless communication systems, such as WLAN, WiMAX, and RFID.

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“…In Reference , each side of the monopole was coupled a parasitic spiral patch to realize 64.7% bandwidth. In Reference , a cross‐shaped monopole, a ground plane extension, and a slotted ground plane were used to realize 42.6% bandwidth. In Reference , an asymmetric ground plane with multiple extended stubs was used to realize 72.4% bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Simple circularly polarized planar monopole inverted T‐shaped antenna

Ellis

Ahmed

Kponyo

et al. 2019

Micro & Optical Tech Letters

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This article presents a novel planar monopole antenna with circular polarization. The 3‐dB axial ratio (AR) is achieved by: shifting a vertical monopole to the left edge of the substrate in conjunction with a laterally inverted L‐shaped ground plane. When viewed from the top, the antenna resembles an uneven T‐shaped structure rotated at 90°. Measurement results show that; a 3‐dB AR bandwidth is achieved from 3.1 to 6.2 GHz (66.7% fractional bandwidth) and an S11 ≤ −10 dB bandwidth is realized from 2.5 to 6.5 GHz (88.9% fractional bandwidth). The proposed antenna is compact with an area of 20 mm2, produces stable radiation patterns, and its simple to design and fabricate without using parasitic elements or introducing slots on the antenna.

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A Compact Broadband Cross-Shaped Circularly Polarized Planar Monopole Antenna With a Ground Plane Extension

Cited by 73 publications

References 14 publications

Wide‐bandwidth multifrequency circularly polarized monopole antenna for wireless communication applications

Wide‐bandwidth multifrequency circularly polarized monopole antenna for wireless communication applications

A small single fed broadband circularly polarized slot antenna

Simple circularly polarized planar monopole inverted T‐shaped antenna

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