A low-profile CP microstrip antenna with broad beamwidth based on loading with curved microstrip resonant structures

Cao, Wenquan; Zhang, B.-N.; Liu, A.J.; Tang, Yu; Guo, Daosheng; Wei, Yang; Zhang, Qian

doi:10.1080/09205071.2012.706126

Cited by 10 publications

(7 citation statements)

References 21 publications

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“…The geometry of the proposed antenna is shown in Figure 1, which is mainly composed of two crossed printed dipoles, a feeding network and a notched-corner metal cavity. The overall dimension of the proposed antenna is only 70 × 70 × 36 mm 3 or 0.32 × 0.32 × 0.17λ 3 , where λ is the corresponding freespace wavelength at 1.4 GHz. The printed dipoles are etched on the bottom layer of the FR4 substrate with a thickness of 1 mm and a relative permittivity of 4.4.…”

Section: Antenna Geometrymentioning

confidence: 99%

“…Finally, a notched-corner metal cavity is introduced in Design 3. All of the three designs use the same substrates with the same dimension of 70 × 70 × 36 mm 3 . Figure 4 shows the simulated VSWR at one feeding port of the three antenna designs without the feeding network.…”

Section: Antenna Design Processmentioning

confidence: 99%

“…In order to improve the coverage area and stabilize the receiving signal in GNSS applications, wide HPBW and ARBW are very valuable for the antenna. In order to increase the HPBW, many techniques have been used such as extending the substrate beyond the ground plane in [1], loading auxiliary radiators in [2], loading with curved microstrip resonant structure in [3], reshaping the ground plane of the antenna in [4] and adopting dual-ring cavity in [5]. However, the antennas mentioned above have relatively large dimension, and the impedance and AR bandwidths are relatively narrow.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Wideband Circularly Polarized Antenna With Wide Beamwidth for GNSS Applications

Li¹,

Zhang²,

Zhang³

et al. 2018

PIER C

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A wideband circularly polarized antenna with wide half power beamwidth (HPBW) and 3 dB axial-ratio beamwidth (ARBW) is proposed in this paper. The circularly polarized (CP) radiation is realized by feeding two crossed printed dipoles through a wideband feeding network with broadband 90 • phase shift. By adding a thick substrate layer and a notched-corner metal cavity around the antenna, the impedance bandwidth (VSWR < 2) is greatly enhanced. The HPBW of the proposed antenna is greater than 110 • while the ARBW is greater than 130 • in the operating band, simultaneously. The overall dimension of the antenna is only 70 × 70 × 36 mm 3. The measured results show that the impedance bandwidth of the proposed antenna reaches 54.7% (1.06 GHz-1.86 GHz) while the AR bandwidth (AR < 3 dB) is 48.6% (1.08 GHz-1.78 GHz). As such, the proposed antenna can be widely used in various global navigation satellite system (GNSS) applications.

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Section: Antenna Geometrymentioning

confidence: 99%

Section: Antenna Design Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Wideband Circularly Polarized Antenna With Wide Beamwidth for GNSS Applications

Li¹,

Zhang²,

Zhang³

et al. 2018

PIER C

View full text Add to dashboard Cite

show abstract

“…The half power beamwidths (HPBWs) is valuable for the CNSS applications in order to stabilize the receiving signals and improve the covering area. To get wide HPBWs of the antenna, many techniques have been used such as adopting the quadrifilar helix antenna in [6], extending the substrate beyond the ground plane in [7], loading with monopoles around microstrip antenna in [8], loading with curved microstrip resonant structures in [9], utilizing the curved dipoles and ground planes in [10], employing various kinds of conducting walls or ground structure in [11,12], loading with artificial magnetic conductor in [13] and so on. Nevertheless, the antennas mentioned above have relatively large structures and most of them focus on single-band work.…”

Section: Introductionmentioning

confidence: 99%

A dual-band circularly polarized antenna with wide HPBWs for CNSS applications

Zhang

et al. 2018

IEICE Electron. Express

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A dual-band circularly polarized (CP) antenna with wide half power beamwidths (HPBWs) for compass navigation satellite system (CNSS) applications is proposed in this paper. The CP radiation is realized by feeding four sequentially rotated U-shape patches shorted to the ground at both ends of them with a 90°phase difference feeding network. Loading four parasitic arc-shape patches with one end shorted to the ground provides the dual-band CP operation. Experimental results show that the proposed antenna exhibits two overlapped impedance and axial ratio relative bandwidth of 2.8% and 3.3%. Wide HPBWs of over 122°at center frequencies (1.268 and 1.561 GHz) of the CNSS-2 B3 and B1 bands are obtained. With these good performances, the antenna can be a good candidate for CNSS applications.

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“…Wide half-power beamwidths (HPBWs) are very valuable in CNSS applications in order to improve the coverage area and stabilize the receiving signal. Many studies have been done to broaden the HPBWs of the antenna, such as extending the substrate beyond the ground plane with HPBWs of 130°in [17], loading auxiliary radiators with HPBWs of 90°in [18], loading with curved microstrip resonant structure with HPBWs of 150°in [19], utilizing the curved dipoles and ground planes with HPBWs of 150°in [20], and adopting various kinds of conducting wall or cavity with HPBWs of greater than 100°in [21][22][23][24] which is the most common way. Nevertheless, the antennas mentioned above have relatively large dimensions, and most of them focus on single-band work.…”

Section: Introductionmentioning

confidence: 99%

A Compact Dual-Band Circularly Polarized Antenna with Wide HPBWs for CNSS Applications

Zhang

et al. 2018

International Journal of Antennas and Propagation

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A compact dual-band circularly polarized antenna with wide half-power beamwidths (HPBWs) for compass navigation satellite system applications is proposed in this paper. The CP radiation is realized by arranging four compact dual-band inverted-F monopoles symmetrically to the center point, where the four monopoles are excited with a 90° phase offset through a compact sequential-phase feeding network. The compactness of the dual-band inverted-F monopole is realized by inserting two chip inductors in the horizontal portion of the monopole. The overall dimension of the antenna is only 0.211λ0 × 0.211λ0 × 0.057λ0, where λ0 is the corresponding free-space wavelength at 1.268 GHz. Experimental results show that the proposed antenna exhibits two overlapped impedance and axial ratio bandwidths of 50 MHz (1.236–1.286 GHz) and 40 MHz (1.532–1.572 GHz). Wide HPBWs of about 120°/125° and 121°/116° (XOZ/YOZ planes) at center frequencies (1.268, 1.561 GHz) of the CNSS-2 B3 and B1 bands are obtained, respectively. With these good performances, the antenna can be a good candidate for CNSS applications.

show abstract

A low-profile CP microstrip antenna with broad beamwidth based on loading with curved microstrip resonant structures

Cited by 10 publications

References 21 publications

A Wideband Circularly Polarized Antenna With Wide Beamwidth for GNSS Applications

A Wideband Circularly Polarized Antenna With Wide Beamwidth for GNSS Applications

A dual-band circularly polarized antenna with wide HPBWs for CNSS applications

A Compact Dual-Band Circularly Polarized Antenna with Wide HPBWs for CNSS Applications

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