Dual-Band Spiral Printed Quadrifilar Helical Antenna Miniaturized by Surface and Inner Dielectric Loading

Han, Yiping; Wang, Dan; Wang, Ziwei; Yao, Yuchen; Feng, Yingjie; Hu, Kunkun; Gao, Yuan; Fan, Zhipeng; Yuan, Siyu

doi:10.1109/access.2019.2902308

Cited by 18 publications

(15 citation statements)

References 24 publications

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“…This is in fact not a new finding and it has been reflected in several papers such as [6][7][8]. However, the ignorance of this issue in several other papers [9][10][11][12][13][14][15][16][17][18][19][20][21][22] is the motivation of this research to prevent from further errors. Above all, while looking for a wideband microstrip antenna in the recently published papers, I encountered to a significant solution, an octave-bandwidth antenna consisting of two inverted Uslots and two probes [9].…”

Section: Introductionmentioning

confidence: 85%

“…However, the issue is more important when the antennas are miniaturised, since the coupling between the ports is increased, such as for the QHAs with meandered or folded arms, the conical QHAs with folded arms, etc. [12][13][14][15][16][17][18][19][20]. In this paper, two structures are re-examined; multi-fed spiral antennas with folded arms [21,22] in section 3 and quadrifilar square helical antennas (QSHAs) with folded arms [4] in section 4.…”

Section: Introductionmentioning

confidence: 99%

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On the Precise Examination of Multi-Port Antennas; Corrections and Criticisms to Some Recently Reported Results

Fartookzadeh¹

2019

Preprint

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In this paper, precise examination of multi-port antennas with large mutual coupling between the ports is studied. For this purpose, some vital parameters such as active reflection coefficients and realised gain are emphasized. The main motivation of this research is the ignorance of this issue in several recently published papers. Hence, corrections and criticisms to some recently reported results are presented. At first, a microstrip patch consisting of two inverted U-slots is re-examined, which has been proposed in a recently published paper for wideband applications. However, the authors did not present satisfactory results to indicate the performance of the proposed structure. In reverse, some important parameters such as the antenna gain appear to be incorrectly reported. In this paper, the characteristics of the antenna are compared with a simple 50 Ω microstrip line excited by two probes, indicating no significant differences. In the remainder of this paper, some corrections are provided on two examples of wide-beam circularly polarised multi-fed antennas for satellite applications. The first example is the multi-fed spiral antennas with folded arms, which have been proposed as the widebeam antennas at 435 MHz. It is indicated that the antenna height should be increased for better performance. The second example is the quadrifilar square helical antennas with folded arms, which have been proposed as the widebeam antennas for 435 MHz with minor responses at 145 MHz. Some corrections are presented on the previously reported minor responses at 145 MHz.

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Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

On the Precise Examination of Multi-Port Antennas; Corrections and Criticisms to Some Recently Reported Results

Fartookzadeh¹

2019

Preprint

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“…In [19], by meandering and turning the helix arms into the form of square spirals, size reduction of 43 % is obtained. More recently, a miniaturized dual-band spiral PQHA for UAV application is proposed by surface and inner dielectric loading [20]. Although the techniques described above would reduce the antenna's size, each of these techniques has some specific advantages and limitations with respect to impedance bandwidth, radiation pattern, size and structural strength.…”

Section: Introductionmentioning

confidence: 99%

Design of Low-Profile Dual-Band Printed Quadrifilar Helix Antenna With Wide Beamwidth for UAV GPS Applications

2020

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In the paper, a low-profile dual-band printed quadrifilar helix antenna (PQHA) with wide beamwidth is presented for UAV GPS applications. The antenna is composed of a hollow dielectric cylinder with four arms of dual-helix metal strips and a hollow dielectric ring with four pairs of circular metal strips. To provide dual-band operation, different lengths of the dual-helix metal strips are applied. By loading the circular metal strips on the dual-helix metal strips, size reduction of the antenna height is realized. Moreover, wide beamwidth is obtained. A miniaturized quad-feed network is also designed to provide equal amplitude signals with sequentially quadrature phases. To validate the proposed structure, a prototype is fabricated. The height of the antenna is 18.5 mm. The experimental results show that good impedance matching (|S11| <-18 dB) and axial ratio (< 2 dB) are obtained at GPS L1/ L2 bands. At 1.227 GHz, the measured 3-dB axial ratio beamwidths (ARBWs) are 186° and 187° at xoz and yoz planes, respectively. While the values are 167° and 163° at 1.575 GHz. The measured half-power beamwidths (HPBWs) are both more than 120° at the two bands. The results indicate that the proposed PQHA is a good candidate for UAV GPS applications. INDEX TERMS Printed quadrifilar helix antenna (PQHA), dual band, GPS, wide beamwidth, miniaturization.

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“…In this paper, a design of combined printed helical spiral antenna and helical inverted-F antenna is presented for unmanned aerial vehicle application. Improving the dual-arm spiral GPS antenna [35], the original GPS antenna is retained by one radiation element left and the telemetry communication function is added. PHSA fits GPS L1 (1.575 GHz) band, and helical IFA fits telemetry communication frequency band (S band) separately.…”

Section: Introductionmentioning

confidence: 99%

Design of Combined Printed Helical Spiral Antenna and Helical Inverted-F Antenna for Unmanned Aerial Vehicle Application

Han

Zhao

et al. 2020

IEEE Access

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The design and implementation of printed helical spiral antenna (PHSA) and helical printed inverted-F antenna (IFA) are presented for unmanned aerial vehicle (UAV) with global positioning system (GPS) L1 band (1.57 GHz) and telemetry communication frequency band (2.33 GHz) applications. The proposed antenna is miniaturized by co-winding the radiation elements on the same ceramic rod, surface covering by dielectric sealant, inserting a high permittivity dielectric load into the helical structure, turning and meandering the radiation element of PHSA into a spiral parallelogram structure. The PHSA and helical IFA antenna radiation elements are manufactured by silver pasted on the same hollow ceramic cylinder with a diameter of 12 mm and a height of 24.7 mm. The experimental and simulation results show that the proposed PHSA and IFA can achieve the gain of 0.05dB and 1.97 dB respectively and be suitable for GPS L1 band and telemetry communication frequency band (2.33 GHz) applications separately. INDEX TERMS Circular polarization, GPS antenna, helical inverted-F antenna, printed spiral helical antenna, unmanned aerial vehicle.

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Dual-Band Spiral Printed Quadrifilar Helical Antenna Miniaturized by Surface and Inner Dielectric Loading

Cited by 18 publications

References 24 publications

On the Precise Examination of Multi-Port Antennas; Corrections and Criticisms to Some Recently Reported Results

On the Precise Examination of Multi-Port Antennas; Corrections and Criticisms to Some Recently Reported Results

Design of Low-Profile Dual-Band Printed Quadrifilar Helix Antenna With Wide Beamwidth for UAV GPS Applications

Design of Combined Printed Helical Spiral Antenna and Helical Inverted-F Antenna for Unmanned Aerial Vehicle Application

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