Novel wide-beam cross-dipole CP antenna for GNSS applications

Zhang, Yun-Qi; Qin, Simeng; Xi, Li; Guo, Lixin

doi:10.1002/mmce.21272

Cited by 12 publications

(5 citation statements)

References 23 publications

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“…To generate circularly polarized radiation, two orthogonal dipoles excited with equivalent magnitude and out of phase are requisite. 18 The two orthogonal dipoles can be excited in parallel by using single feed network 19 and the needed phase relationship for CP radiation is attained by using unequal length dipoles. Two semi-circular curves are connected with vertical dipole to get the appropriate phase relationship.…”

Section: Antenna Designmentioning

confidence: 99%

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Bhaskar

Singh

2018

Int J RF Microw Comput Aided Eng

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In this article, a circularly polarized antenna for ultra‐high frequency radio frequency identification (RFID) tag is presented. The circular polarization is realized by two orthogonal, unequal length linearly tapered meander line cross dipoles. The meander structure with capacitive tip loading is used for size miniaturization of the antenna. A modified T‐match network is employed to feed the cross dipole structure. The measured 10‐dB return loss bandwidth of the cross dipole antenna is 17 MHz (908‐923 MHz) and the corresponding 3‐dB axial ratio bandwidth is 6 MHz (912‐918 MHz). The overall size of the proposed antenna is 0.17λ0 × 0.17λ0 at 915 MHz. The maximum read range between the reader and the tag with the proposed antenna is 4.7 m larger than the analogous linearly polarized tag antenna due to the reduction in polarization loss between the tag and reader antennas. Thus, a maximum read range of 15.66 m with the gain of 1.28 dBic is achieved at 915 MHz.

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Section: Antenna Designmentioning

confidence: 99%

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Bhaskar

Singh

2018

Int J RF Microw Comput Aided Eng

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“…Nowadays, wide-beam antennas have a range of applications requiring wide coverage [1][2][3][4][5][6][7], such as satellite systems [8], radar detection [9,10], and 5G wireless communication [11][12][13]. Although wide beamwidth can be obtained by reducing antenna gain, the directivity of the antenna will also be reduced and cause a large loss of radiation energy.…”

Section: Introductionmentioning

confidence: 99%

Antipodal Linearly Tapered Slot Antenna with Quasi-Hemispherical Pattern Using Subwavelength Elements

2023

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Antennas with quasi-hemispherical radiation patterns are preferred in many wide−area wireless communication systems which require the signals to uniformly cover a wide two−dimensional region. In this work, a simple but effective beamwidth broadening technique based on an antipodal linearly tapered slot antenna (ALTSA) is first proposed and then experimentally verified. Compared with most of the reported designs, the proposed antenna can significantly widen beamwidth and achieve a quasi-hemispherical radiation pattern without increasing the overall size and structural complexity. Only two rows of subwavelength metallic elements (eight elements in total) are simply and skillfully printed at specified positions on the dielectric substrate (relative permittivity εr = 2.94 and thickness h = 1.5 mm) of a general ALTSA whose peak gain is 11.7 dBi, approximately 200% half-power beamwidth (HPBW) enlargement can be obtained in all cut-planes containing the end-fire direction at the central frequency of 15 GHz, and the HPBW extensions in different cut-planes have good consistency. Thus, a quasi-hemispherical beam pattern can be acquired. Thanks to the simplicity of this method, the antenna size and structural complexity do not increase, resulting in the characteristics of easy fabrication and integration, being lightweight, and high reliability. This proposed method provides a good choice for wide−beam antenna design and will have a positive effect on the potential applications of wide-area wireless communication systems.

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“…While stacked structure, [8][9][10] frequency-reconfigurable technology, 11 and two-element conformal structure 12,13 are often investigated to cover multi-frequency bands for compatible with different navigation systems. Except of multi-mode operation, other performances, such as wide beam, 14,15 stable phase center, [16][17][18] and miniaturization 19,20 have also been researched in recent years for improving the positioning accuracy and integration. However, the above antennas are only suitable for satellite navigation applications, the function of short message communication which belongs to BDS is ignored in the design.…”

Section: Introductionmentioning

confidence: 99%

Design of triple‐band dual‐sense shared aperture circular polarized antenna for multimode BeiDou communication and navigation integration

Liu

Wang

et al. 2022

Int J RF Mic Comp-Aid Eng

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In the article, a triple-band dual-sense shared aperture circular polarized (CP) antenna is proposed for multimode BeiDou communication and navigation applications. By integrating the stub-loaded rectangle patch with the shorting-pin-loaded ring patch, the coverage of GPS L2, GPS L5, BDS-2 B2, BDS-2 B3, and BDS-1 L/S bands is realized. Besides, wideband filtering orthogonal feed network is adopted for feeding the ring patch to reduce the mutual coupling interference between the two patches. The slot-loaded ground plane is also employed for further decoupling. For validation, a prototype is designed, fabricated, and measured. The results indicate that the polarization of right-handed circular polarization (RHCP) is obtained at 1.2 GHz with a peak gain of 5.4 dBic for navigation service. While left-handed circular polarization (LHCP) and RHCP are realized at 1.615 GHz and 2.49 GHz, respectively, with the peak gains of 6.7 dBic and 7.4 dBic for communication service.

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Novel wide-beam cross-dipole CP antenna for GNSS applications

Cited by 12 publications

References 23 publications

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Linearly tapered meander line cross dipole circularly polarized antenna for UHF RFID tag applications

Antipodal Linearly Tapered Slot Antenna with Quasi-Hemispherical Pattern Using Subwavelength Elements

Design of triple‐band dual‐sense shared aperture circular polarized antenna for multimode BeiDou communication and navigation integration

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