Single-Feed, Wideband, Circularly Polarized, Crossed Bowtie Dipole Antenna for Global Navigation Satellite Systems

Tran, Huy Hung; Ta, Son Xuat

doi:10.5515/jkiees.2014.14.3.299

Cited by 47 publications

(21 citation statements)

References 15 publications

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“…One of the two lower CP resonances was generated by crossed bowtie dipoles and the other by the orthogonal slots. Further detailed explanation about these CP radiation mechanisms can be found in study [11]. The highest CP resonance occurred at around 5.9 GHz; this resonance remained unchanged, as it was produced by the second mode of the barbed-shape dipole.…”

Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 93%

“…While in the |S 11 | profile, the antenna exhibited two resonances. Based on the mechanism described in [11], the proper adjustments of dipole length and ring size were able to excite CP waves at the desired frequency. The variation of l i resulted in only a minor effect on the upper band operation; thus, it was not mentioned here.…”

Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 99%

“…The crossed bowtie dipole antenna [11] was able to achieve a wide CP operation bandwidth by using a suitable combination of the fundamental bowtie dipole mode and the orthogonal slot mode formed by the gap between each bowtie arm. The antenna performances for different values of the bowtie's length L are shown in Fig.…”

Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 99%

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A Dual-Wideband Circularly Polarized Antenna Using an Artificial Magnetic Conductor

Tran

Park

2016

Antennas Wirel. Propag. Lett.

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A dual-wideband circularly polarized (CP) antenna was proposed based on the strategy of combining multi-mode resonances. The primary radiators were two barbed-shape dipoles and two bowtie dipoles printed on the same substrate. They were placed over an artificial magnetic conductor (AMC) for the low-profile antenna design purpose. Properly combining the fundamental mode of the barbed-shape dipole, the bowtie mode, the slot mode, the second mode of a barbed-shape dipole and extra resonance generated by the AMC surface, a dual-wideband operation can be achieved. The final design with an overall size of 0.64 λ o × 0.64 λ o × 0.16 λ o at 2.4 GHz had measured impedance bandwidth of 40% (2-3 GHz) and 49.5% (3.8-6.3 GHz) for the lower and upper bands, respectively. The measured 3 dB axial ratio bandwidths were 19.3% (2.25-2.73 GHz) and 33.8% (4.3-6.05 GHz) for the lower and upper bands, respectively. The antenna performed an average gain of about 6.6 dBic across the low CP region and 7.4 dBic across the high CP region.Index Terms-circular polarization, dual band, broadband, artificial magnetic conductor, crossed dipole 1536-1225 (c)

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Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 93%

Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 99%

Section: A Crossed Barbed-shape Dipoles and Crossed Bowtie Dipoles Omentioning

confidence: 99%

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A Dual-Wideband Circularly Polarized Antenna Using an Artificial Magnetic Conductor

Tran

Park

2016

Antennas Wirel. Propag. Lett.

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“…For CP radiation, the antenna was initially developed using two orthogonal dipoles with different lengths and a single feed. The lengths of the dipoles were chosen such that the real parts of their input admittances were equal and the angle of the input admittances differed by 90° at the desired frequency [11,12]. Similar to the radiation mechanism in [13], the parasitic elements were employed to produce an additional CP band.…”

Section: Single Element Design and Characterizationmentioning

confidence: 99%

Wideband Circularly Polarized 2 × 2 Antenna Array With Multibeam Steerable Capability

Tran

2017

Antennas Wirel. Propag. Lett.

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A circularly polarized (CP) switched-beam antenna array with the capability of generating nine steerable beams in the hemispherical space is presented in this paper. A single radiator is first constructed with two triangular-shaped dipoles crossing through printed rings, and four parasitic elements are introduced to enhance the CP operation bandwidth. For the beam steering operation, its array antennas are implemented in a 2 × 2 arrangement and fed by a four-input port feeding network composed of four double-box branch-line couplers. With a suitable feed excitation mechanism, the proposed antenna can generate circularly polarized axial beams in nine directions. The antenna is fabricated with an overall size of 2λ o × 2λ o × 0.2λ o (at 6 GHz) and the measured results demonstrate that the proposed design provided very wide -10 dB impedance and 3-dB axial ratio bandwidths of 48.6% and 46.2%, respectively. Additionally, stable radiation patterns with a gain of approximately 11.5 dBic and radiation efficiency of greater than 90% were observed for every beam direction.

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“…For the latter, the antenna feed network is rather large and complex due to the use of 90 • hybrids or Wilkinson power dividers in the structure [2][3][4][5]. On the contrary, a single-feed antenna produces CP by wave-mode perturbation by implementing slots [6], stub-loads [7,8], truncated corners [9] in the antenna geometry, or designing of vacant-quarter ring for bowtie dipole [10]. Thus, no external feeding network is required, and this is suitable for low-profile, lightweight, and low-cost antenna design.…”

Section: Introductionmentioning

confidence: 99%

A Proximity-Fed Antenna for Dual-Band GPS Receiver

Pham¹,

Chung²,

Lee³

2016

PIER C

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Abstract-A new design of dual-band L1/L2 GPS antenna is proposed. The antenna generates dualband circularly polarized radiation by exciting a cross-slot and ring-slot of a concentric circular aperture using a proximity-coupled feed. Parametric studies show that the matching and axial ratio bandwidth of L1 (1.575 GHz) and L2 (1.227 GHz) bands can be independently tuned by alternating the ring radius and slot length. The range of frequency ratio and 3 dB center frequency can be highly adjusted by slot's parameters. The size of the antenna is 73 mm × 73 mm × 6.4 mm including the ground, corresponding to 0.29λ × 0.29λ × 0.026λ at 1.227 GHz.

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Single-Feed, Wideband, Circularly Polarized, Crossed Bowtie Dipole Antenna for Global Navigation Satellite Systems

Cited by 47 publications

References 15 publications

A Dual-Wideband Circularly Polarized Antenna Using an Artificial Magnetic Conductor

A Dual-Wideband Circularly Polarized Antenna Using an Artificial Magnetic Conductor

Wideband Circularly Polarized 2 × 2 Antenna Array With Multibeam Steerable Capability

A Proximity-Fed Antenna for Dual-Band GPS Receiver

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