Dual-band wide-beam crossed asymmetric dipole antenna for GPS applications

Ta, Son Xuat; Park, I.; Ziolkowski, Richard W.

doi:10.1049/el.2012.2890

Cited by 61 publications

(33 citation statements)

References 6 publications

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“…Recently, a cavity-backed reflector has been introduced as a simple technique to improve the CP radiation beamwidth of crossed dipole antennas. [17][18][19] This technique is effective for both single-and dual-band operations. However, due to the asymmetric configuration of the primary radiating elements, the performance of the antenna in the L1 and L2 bands is dissimilar.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the asymmetric configuration of the primary radiating elements, the performance of the antenna in the L1 and L2 bands is dissimilar. [18,19] Archimedean spiral antennas belong to a class of traveling-wave wideband antennas radiating a CP wave with a wide 3-dB AR beamwidth. These antennas can be placed at a distance much less than a quarter wavelength from a conducting reflector to produce an efficient unidirectional radiation.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the presence of the multiarm curl radiator, the proposed antenna is considerably superior in performance to the crossed dipoles antennas. [18,19] 2. Antenna design and characteristics Figure 1 shows the geometry of the proposed antenna, which consists of a multiarm curl radiator, a coaxial line, and a reflector.…”

Section: Introductionmentioning

confidence: 99%

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A multiarm curl antenna for GPS applications

2014

Journal of Electromagnetic Waves and Applications

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A single-feed dual-band antenna with wide-beam circularly polarized (CP) radiation is introduced for application in the global positioning system (GPS). The primary radiating element is a planar multiarm curl antenna. The dual-band operation is achieved by dividing the arms of the antenna into two branches of different lengths. To generate CP radiation, the radiator is fed by double vacant-quarter printed rings, which allows direct matching of the antenna to a single 50 Ω coaxial line. To enable unidirectional CP radiation and improve the 3 dB axial ratio (AR) beamwidth, the planar multiarm curl radiator is backed by a rectangular cavity-backed reflector. The final design, with an overall GPS-L2 frequency size of approximately λ o /2.45 × λ o /2.45 × λ o /8, resulted in a |S 11 |<-10 dB bandwidth of 1.221-1.282 GHz (4.9%) and 1.546-1.660 GHz (7.1%) and a 3 dB AR bandwidth of 1.212-1.240 GHz (2.2%) and 1.560-1.590 GHz (1.9%). Furthermore, it showed excellent right-hand CP (RHCP) radiation at both operating bands, namely wide beamwidth, similar gain, a high front-to-back ratio, and high radiation efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A multiarm curl antenna for GPS applications

2014

Journal of Electromagnetic Waves and Applications

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“…The scythe-shaped dipole with a meander line is designed for a significant reduction in the size of the primary radiating element [6] - [8].…”

Section: Introductionmentioning

confidence: 99%

“…A vacant-quarter printed ring with broadband impedance matching characteristics is used as a 90° phase delay line for the crossed dipoles to achieve CP radiation [1], [6] - [8]. The cavity-backed reflector is not only used to achieve the unidirectional radiation pattern, but also to improve the 3-dB axial-ratio (AR) bandwidth and beamwidth enhancement of the CP radiation.…”

Section: Introductionmentioning

confidence: 99%

Wide-beam circularly polarized composite cavity-backed crossed scythe-shaped dipole

Han

Ziolkowski

2013

2013 Asia-Pacific Microwave Conference Proceedings (APMC)

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In this paper, a wide-beam circularly polarized (CP) composite cavity-backed crossed scythe-shaped dipole is proposed. Each dipole arm contains a meander line whose end is shaped like a scythe chine to accomplish a significant reduction in the radiator size. The scythe-shaped dipoles are crossed through a 90° phase delay line of a vacant-quarter printed ring in order to generate CP radiation and broadband impedance matching. The crossed scythe-shaped dipole is incorporated with a cavity-backed reflector to improve the radiation pattern in terms of the CP radiation beamwidth and front-to-back ratio. The proposed antenna yields broad impedance-matching and 3-dB axial-ratio bandwidths, a high front-to-back ratio, and a wide beamwidth.Index Terms -Circular polarization, scythe shape, meander line, phase delay line, cavity-backed reflector.

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Dual‐band dual‐sense broadband circularly polarized parasitic ring loaded monopole antenna for satellite applications

Bag

Mondal

Sarkar

2022

Int J Communication

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A novel-shaped dual-band circularly polarized (CP) monopole antenna is proposed. Two parasitic strips are fabricated under the unique shaped monopole element to get dual broad operation bands. The proposed antenna is fabricated on the FR4 substrate with the specification of the substrate dimension 40 mm Â 30 mm, ε r ¼ 4:4, h ¼ 1:6 mm, and loss tangent tan δ ¼ 0:02. The parasitic elements are responsible to improve the current distribution I x and I y on the surface. Two CP modes are developed for orthogonally distributions of E x and E y fields with same magnitude. All the successive CP modes are merged, and a broad AR BW is achieved. The RHCP and LHCP waves radiate along the broadside direction at the lower and higher frequency bands. The achieved two impedance bandwidth and axial ratio (AR) bandwidth are 1.5 GHz (7.05-8.55 GHz), 4.45 GHz (11.65-16.1 GHz) and 1.4 GHz (7.1-8.5 GHz), 0.2 GHz (14.6-14.8 GHz). A very good gain response along with two peak gains of 5.5 dBi and 5.9 dBi is achieved. The proposed antenna is applicable for International Telecommunication Union (ITU) satellite communication and (14-14.5 GHz).

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Dual-band wide-beam crossed asymmetric dipole antenna for GPS applications

Cited by 61 publications

References 6 publications

A multiarm curl antenna for GPS applications

A multiarm curl antenna for GPS applications

Wide-beam circularly polarized composite cavity-backed crossed scythe-shaped dipole

Dual‐band dual‐sense broadband circularly polarized parasitic ring loaded monopole antenna for satellite applications

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