A Travelling-Wave-Fed Slot Spiral Antenna With Wide Axial-Ratio Bandwidth and Beamwidth for GNSS Applications

Zhong, Zeng‐Pei; Xiao, Zhang

doi:10.1109/ojap.2021.3074287

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…It is seen that the proposed antenna exhibits a compact size compared with those in [10,12]. Besides, the reported antennas in [10,12,13] are all passive antennas though they own the ability for GNSS operation. Antennas in [38,39] show compact dimensions and high gain, but their overlapping working bandwidths between the IBW and ARBW are 14.7% (1.38 GHz∼1.60 GHz) and 5.7% (1.55 GHz∼1.64 GHz), respectively, which are narrower than 45% (1.07 GHz∼1.7 GHz) of the presented antenna.…”

Section: Design and Implementation Of The Gnss Antennamentioning

confidence: 94%

“…Wideband CP antennas are demonstrated to be good candidates for GNSS applications, which can be compatible with diferent navigation systems in the simple structure. Common wideband CP structures include crossed dipoles [10,11], Archimedean spirals [12,13], slot antennas [14], and feed network-based antennas [15][16][17][18][19][20]. However, metallic cavities are always applied in crossed dipoles, slot antennas, and spiral antennas for obtaining directional radiation, which increases the profle and cost.…”

Section: Introductionmentioning

confidence: 99%

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Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network

Wang,

Liu,

et al. 2023

International Journal of Antennas and Propagation

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In the paper, a wideband miniaturized impedance-transforming quadrature four-feed network with a flat output phase difference is presented and applied to the design of an active integrated GNSS antenna where no extra impedance matching circuit is needed. The features of impedance transformation and flat output phase difference are achieved by the proposed miniaturized rat-race coupler. When combining the proposed rat-race coupler with two trans-directional (TRD) couplers, a four-feed network with stable sequential quadrature phase shifts is obtained in the whole GNSS band. Since the quadrature four-feed network has the feature of impedance transformation, integration with a low-noise amplifier (LNA) can be realized without extra impedance matching circuits, which reduce the overall size and losses. For validation, a simple rectangular patch is applied as the radiator, and the active prototype is fabricated. Measurement results show that over the entire GNSS band from 1.164 GHz to 1.610 GHz, the miniaturized integrated antenna exhibits a return loss of more than 10 dB, an axial ratio of less than 3 dB axial ratio, and a gain of greater than 16 dBic.

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Section: Design and Implementation Of The Gnss Antennamentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network

Wang,

Liu,

et al. 2023

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…At present, the researches on CP antenna include wideband design, high gain, wide beam, etc. To achieve wideband operation, the commonly used structures include slot antennas [3,4], spiral antennas [5,6], aperture antennas [7,8], and crossed dipoles [9,10].…”

Section: Introductionmentioning

confidence: 99%

Design of Wideband Circularly Polarized Filtering Antenna with High Frequency Selectivity and Gain Flatness

Zhao,

Liu,

Ren

et al. 2023

PIER Letters

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In the paper, a wideband circularly polarized (CP) filtering antenna is proposed, which is composed of four bent Vivaldi elements excited with sequential-rotated feeding technique. Since the Vivaldi element has the advantages of high gain and wide bandwidth, it is selected as the radiation element. On this basis, two cross slots are etched on the Vivaldi antenna to increase the gain at lower frequency band, and bent method which has less effect on the overall performance is applied for lowing the profile of the antenna. To realize filtering characteristic, the quadrature four-feed network consisting of one modified miniaturized filtering rat race coupler (FRC) and two compact wideband quadrature couplers is utilized as the sequential-rotated feeding for the Vivaldi elements. Design procedures of the Vivaldi antenna, the modified filtering FRC, and the quadrature four-feed network are given. For validation, a prototype is fabricated and measured. Results show that more than 60% fractional bandwidth (FBW) is achieved under the criterions of more than 10 dB return loss and less than 3 dB axial ratio. Within the AR bandwidth, the gain is in the range of 7.5 dBic ∼ 10.1 dBic. Out of the operation band, the gain sharply decreases to be lower than 5 dBic with a rectangle coefficient (|Normalized Gain −10-dB /Gain 0-dB |) of 1.25, which indicates good filtering performance.

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“…To obtain dual-or multi-mode navigation, wideband or multi-band circular polarized (CP) antennas have been reported. For example, the crossed-dipole structure, 1 monopole structure, 2 wideband feed network, 3,4 meta-surface, 5 spiral-slot structure, 6 and coupling feed technology 7 are separately proposed for realizing wideband operation. 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.…”

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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A Travelling-Wave-Fed Slot Spiral Antenna With Wide Axial-Ratio Bandwidth and Beamwidth for GNSS Applications

Cited by 7 publications

References 21 publications

Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network

Design of Active Integrated GNSS Antenna Based on the Impedance Transforming Quadrature Four-Feed Network

Design of Wideband Circularly Polarized Filtering Antenna with High Frequency Selectivity and Gain Flatness

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

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