Dual-Frequency Circularly-Polarized Patch Antenna With Compact Size and Small Frequency Ratio

Bao, Xiulong; Ammann, Max J.

doi:10.1109/tap.2007.900271

Cited by 122 publications

(79 citation statements)

References 6 publications

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“…Due to various spectrum requirements, dual-band CP operations are also required, and various types of antenna structures with dual-band CP properties have been reported [5][6][7][8][9][10][11]. Techniques such as stacked-patch configurations [5,6] and employing different resonant elements on a single layer [7,8] are often adopted to realize dual bands. But achieving a small frequency ratio of the two bands and wide axial-ratio (AR) bandwidths with a simple structure is still a challenge in dual-band CP antenna designs.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Circularly Polarized Antenna With Differential Feeding

Wu¹,

Yin²,

Wang³

et al. 2014

PIER C

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Abstract-A dual-band circularly polarized antenna is presented in this paper. A rectangular patch antenna with gap-feeding structure is firstly designed, and 3-dB axial-ratio bandwidth from 2.35 to 2.48 GHz is obtained. A parasitic square ring is placed on the rear of the rectangular patch as a band-notch unit operating around 2.4 GHz. Then an original wide circularly polarized band is split into two bands from 2.25 to 2.31 GHz and from 2.46 to 2.53 GHz. By adopting differential feeding, symmetrical patterns are achieved. Measurement results show that two 3-dB axial-ratio bands of 2.6% (2.25-2.31 GHz) and 2.0% (2.51-2.56 GHz) are obtained with a small frequency ratio of 1.11.

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Section: Introductionmentioning

confidence: 99%

Dual-Band Circularly Polarized Antenna With Differential Feeding

Wu¹,

Yin²,

Wang³

et al. 2014

PIER C

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“…The spurious radiation degrades the antenna parameters [2][3]. Now days defected ground microstrip patch antennas have been rapidly developed for multi-band and broadband in wideband communication systems [4][5][6]. The use of microstrip defected ground geometry antennas in electromagnetic radiations has been a recent topic of interest in the world.…”

Section: Introductionmentioning

confidence: 99%

Dual Band Gap Coupled Antenna Design with DGS for Wireless Communications

Kandwal

Sharma²,

Khah³

2014

AEM

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A novel gap coupled dual band multiple ring antenna with a defected ground structure (DGS) has been successfully implemented. A different technique is used in this communication where both gap coupling and defected ground are applied to obtain better results for wireless applications. The designed antenna operates in two different frequency bands. The antenna shows a wideband in C-band and also resonates in the X-band. The main parameters like return loss, impedance bandwidth, radiation pattern and gain are presented and discussed. The gain is increased and the side lobe level is considerably reduced to a good extent. Designed antenna is tested and the results show that the simulation and experimental results are in good agreement with each other.

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“…Among the various types of antennas, circularly polarized antennas owing to their reducing polarization mismatch and multipath fading win a wide range of applications in the communication systems. As a good candidate, planar printed antennas [1][2][3][4][5][6][7][8][9][10][11] have the attractive features of small size, light weight, low profile and ease of fabrication. Some printed monopole antennas with multiple branches, such as F-shaped [1], G-shaped [2], double Tshaped [3], and C-shaped [4] ones, provide dual or triple current paths and resonate at different frequency points.…”

Section: Introductionmentioning

confidence: 99%

Tri-Band Slotted F-Shaped Antenna With Dual-Polarization Characteristics for Wlan/Wimax Applications

Yao¹,

Zhang²,

Jiao³

et al. 2013

PIER Letters

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Abstract-A tri-band slotted F-shaped antenna with dualpolarization characteristics for wireless applications is presented. The crooked gap and F-shaped monopole are optimized to achieve triband operation of 2.4, 3.5 and 5.8 GHz with −10 dB impedance bandwidths of 20%, 14.1%, and 13.6%, respectively. Furthermore, by properly inserting an F-shaped strip on the wide-slot ground, the circular polarization (CP) with a 19% (3.3-4 GHz) 3 dB axial ratio bandwidth is obtained. The proposed antenna has a compact dimension of 42×40×1.6 mm 3 . A prototype of the antenna is fabricated and tested, and an agreement with simulated results is obtained.

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Dual-Frequency Circularly-Polarized Patch Antenna With Compact Size and Small Frequency Ratio

Cited by 122 publications

References 6 publications

Dual-Band Circularly Polarized Antenna With Differential Feeding

Dual-Band Circularly Polarized Antenna With Differential Feeding

Dual Band Gap Coupled Antenna Design with DGS for Wireless Communications

Tri-Band Slotted F-Shaped Antenna With Dual-Polarization Characteristics for Wlan/Wimax Applications

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