Low-Profile Broadband Vertically Polarized Microstrip Magnetic Dipole Antenna With Endfire Radiation

Zhang, Wenhai; Ke, Lishun; Liao, Shaowei; Sun, Yuanfa; Xue, Quan; Yang, Wanchen; Che, Wenquan; Chen, Haidong; Hou, Meng

doi:10.1109/lawp.2021.3101892

Cited by 11 publications

(3 citation statements)

References 34 publications

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“…In addition to the aforementioned antenna structures, shorted-patch antennas can also generate VP while maintaining a low profile. Parasitic structures are used to improve the endfire directivity in [27], [28] and enhance the impedance bandwidth [29], [30]. A circularly polarized antenna is proposed by combining the magnetic dipole (shorted patch) and electric dipole [31].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Dual-Polarized Endfire Antenna Array for 5G mm-Wave Smartphones

Chen,

Ala-Laurinaho,

Khripkov

et al. 2024

IEEE Trans. Antennas Propagat.

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In this article, a dual-polarized (DP) endfire antenna array is proposed for the 5G smartphone applications. The antenna covers all five defined millimeter-wave (mm-wave) frequency bands, namely n257, n258, n259, n260, and n261, which are used for mobile communications. Electrical dipole antenna is used to achieve the horizontal polarization (HP), and a parasitic element is included for bandwidth enhancement. A shortedpatch antenna functions as a magnetic dipole facilitating the vertical polarization (VP). Additionally, the broadband operation is realized by a novel stacked structure consisting of two different shorted patches. A four-element antenna array is implemented with overall size of 22.6 × 5 × 1.6 mm 3 . The operating frequency band of the proposed antenna array spans from 24 to 44 GHz with −10-dB reflection coefficient for both polarizations. The isolation between the array elements remains above 13 dB across the entire frequency band of interest. The peak realized gain varies from 8.4 to 10 dBi, and the spherical coverage at cdf = 100% and cdf = 50% of EIRP are 22.5 and 12.5 dBm, respectively. The measurement results of the fabricated antenna array agree well with the simulation results.

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Section: Introductionmentioning

confidence: 99%

A Wideband Dual-Polarized Endfire Antenna Array for 5G mm-Wave Smartphones

Chen,

Ala-Laurinaho,

Khripkov

et al. 2024

IEEE Trans. Antennas Propagat.

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show abstract

“…Te 4 × 4 array is designed and achieves 5.4 GHz bandwidth (27.7-32.3 GHz) and 15.25 dB gain. Tere are also studies on single-layer microstrip or SIW type antennas [14][15][16][17][18][19][20][21][22][23][24][25]. An improved bow tie symmetric dipole linear array antenna with single-layer plate structure is proposed in [25].…”

Section: Introductionmentioning

confidence: 99%

A Low Cross-Polarization Microstrip Antenna Array for Millimeter Wave Applications

Lin

Shi

2023

International Journal of Antennas and Propagation

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A low cross-polarization microstrip antenna array for millimeter wave (mmW) applications is proposed in this paper. The antenna element is composed of symmetric T-shaped patches with vias. The adoption of a double-sided symmetric radiation patch structure can suppress the cross-polarized electric field, and the vias reduces energy leakage during the power transmission along the antenna patches. To verify the concept, a 1 × 8 antenna array is fabricated and measured. The measured −10 dB impedance of the antenna array is 28.4% (31 GHz–41.5 GHz) and the peak gain is 15 dBi. The cross polarization ratio is above 35 dB and the 3 dB beamwidths on E-plane and H-plane are 7.5° and 135°, respectively. The proposed compact size and low cross-polarization antenna array might be a good choice for phased array radar and 5th generation (5G) mobile communication applications.

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“…11 For a narrow transverse size, employment of near-fields coupling and capacitive or inductive compensation/loading are the usual methods employed to obtain proper performances simultaneously. 12 Possible solutions for such an element design can be implemented by using top-loaded 13,14 or folding techniques, 15,16 with the toploaded manner the top hat of capacitive characteristics can compensate for the inductance of the connected post. Actually, the top hat patches are permitted a large degree of design freedom because the shorting posts are served as the main radiator.…”

Section: Introductionmentioning

confidence: 99%

Narrow transverse‐size compact vertically polarized end‐fire antenna using dual‐hat composite elements

Guo

2022

Int J RF Mic Comp-Aid Eng

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A narrow transverse-size compact end-fire antenna with vertical polarization (VP) is presented in this paper. The antenna working in the 433 MHz band is constructed based on a dual-hat composite element, which consists of a rectangular and a pentagon top hat. This is operated in terms of capacitive coupling and inductive loading. Two dual-hat composite elements are, respectively, applied as the driven and the reflector elements in a Yagi array layout, and they are arranged in a noncommon ground manner. The main radiators are the posts with VP radiation fields, which are readily affected by electromagnetic coupling from the adjacent elements. The radiation fields are constructively guided and overlapped to generate an end-fire radiation. The resonant length of the antenna is stretched due to a folded current path with a reduced profile height. The measured jS 11 j < À10 dB impedance bandwidth (IMBW) for the fabricated antenna ranges from 419 to 444 MHz (5.7%) and the measured end-fire peak gain can go up to 2.2 dBi at 433 MHz. The antenna dimensions can be maintained at 0.37λ 0 Â 0.16λ 0 Â 0.051λ 0 , where λ 0 is the free-space wavelength at the center frequency. It exhibits narrow transverse size and compact structure.

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Low-Profile Broadband Vertically Polarized Microstrip Magnetic Dipole Antenna With Endfire Radiation

Cited by 11 publications

References 34 publications

A Wideband Dual-Polarized Endfire Antenna Array for 5G mm-Wave Smartphones

A Wideband Dual-Polarized Endfire Antenna Array for 5G mm-Wave Smartphones

A Low Cross-Polarization Microstrip Antenna Array for Millimeter Wave Applications

Narrow transverse‐size compact vertically polarized end‐fire antenna using dual‐hat composite elements

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