A Broadband Dipole Antenna With Parasitic Patch Loading

Chang, Lei; Chen, Ling.lu; Zhang, Jian Qiang; Li, Dan

doi:10.1109/lawp.2018.2864583

Cited by 21 publications

(11 citation statements)

References 12 publications

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“…With a simple structure and excellent performance, the magnetoelectric (ME) dipole antenna, designed by Luk and Wong [3], has attracted extensive attention and further research. By adding a parasitic patch above the antenna, a U-shaped folded ME dipole antenna with a wide bandwidth of 72.7% (1.61-3.45 GHz) was proposed in [4]. To realise dual-band capability, ME dipole antennas with different structures have appeared, such as multilayer structure [5][6][7], parasitic patch [8,9], special E-dipole [10,11] etc.…”

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confidence: 99%

Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

et al. 2020

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A novel dual-wideband dual-polarised magnetoelectric (ME) dipole antenna for the fourth generation (4G)/fifth generation (5G) microcell base station is proposed. Using a pair of orthogonal ME dipoles and Γ-shaped tapered cross feeding lines, the initial antenna achieves dualband and dual-polarised. Then, four U-shaped gaps, added in electric dipoles, effectively extend the lower impedance bandwidth. Finally, a circular parasitic patch with capacitive properties is innovatively loaded above the ME antenna, which obviously reduces the highresonant frequency from 5.5 to 4.9 GHz. Meanwhile, a box-shaped reflector is employed to achieve stable gain and radiation patterns. As a result, the measured results show the good dual-wideband performance of 52.4% (2.14-3.66 GHz) and 7.4% (4.68-5.04 GHz) with voltage standing wave ratio (VSWR) < 2, high isolation (>25 dB) and high gain (9.5 and 5.5 dBi, respectively). In addition, a stable radiation pattern with a half-power beam width of 63.5°+ 6.8°and good cross-polarisation discrimination (>20 dB) on the E-plane is realised over these two bands.

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confidence: 99%

Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

et al. 2020

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“…At the same time, in addition to the antenna in, 3 the proposed antenna is also the most compact. The gains of the antennas in 4 and 7‐9 are higher than that of the proposed antenna because of the large radiation aperture. Similarly, a bigger reflector will result in a larger FBR, while the FBR of the proposed antenna is still >10 dB over the entire impedance bandwidth, which is better than the ones in 3,7,8 …”

Section: Antenna Performance and Comparisonmentioning

confidence: 87%

“…A comparison between the reported wideband antennas and the proposed antenna is made in Table 3. Due to multilayer substrate and patches used in, 3 folded bowtie dipole, microstrip to stripline transition and cavity used in, 4 and complex electric dipole and parasitic patch used in, 9 the three designs are considered complex in structure. It can be seen from Table 3 that the proposed antenna can obtain the maximum impedance bandwidth under a high standard (VSWR <1.5).…”

Section: Antenna Performance and Comparisonmentioning

confidence: 99%

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A simple wideband unidirectional antenna with stable symmetrical radiation patterns

Yang

Zhang

Zhao

et al. 2021

Int J RF Microw Comput Aided Eng

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In this paper, a simple wideband unidirectional antenna is proposed. The antenna is originated from the basic magneto‐electric (ME) dipole antenna. A pair of half‐wavelength horizontal patches are used to excite the basic electric dipole mode. In order to excite the basic magnetic dipole mode, the horizontal patches are extended inward. As a result, the quarter‐wavelength vertical patches are well excited and the impedance matching is improved in the high frequency band. In addition, a pair of vertical patches are employed, it can not only reduce the resonant frequency of the basic electric dipole mode but also form a new magnetic dipole mode at low‐end frequency. Therefore, the impedance matching in the low frequency band is further improved. The proposed antenna is fabricated and measured. A wide bandwidth of 100% from 2.0 to 6.0 GHz for VSWR <1.5 is obtained. Across the entire bandwidth, the gain is 5.6 ± 1.3 dBi, the front‐to‐back ratio (FBR) is >10 dB. Moreover, the radiation patterns are stable, symmetrical, and have no side lobe. The proposed antenna is suitable for wideband unidirectional wireless systems.

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“…operation, various designs of dipole antennas have been reported, such as modifying the shape of the dipole arms [1]- [3], improving feeding methods [4]- [5], loading parasitic radiators [6]- [8], and employing magnetoelectric complementary structures [9]- [10]. As a typical transformation of the single dipole, the folded dipole antennas (FDAs) are employed in many applications [11]- [14] owing to the wideband impedance characteristics.…”

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confidence: 99%