Design of a Compact and Wideband Quadrifilar Helix Antenna

Wang, Xiaofei; Li, Xin-ji; Wang, Hui; Zhou, Shi‐Ping

doi:10.1109/apcap.2018.8538290

Cited by 6 publications

(4 citation statements)

References 1 publication

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“…Although the structure of PQHA is already small, further size reduction is required to meet the space limitations and the high overload for unmanned platform application. Several achievements to reduce antenna size have already been developed including inserting dielectric loading [11], [12], applying different helix turn angle [13], folding the helix antenna arms [14], using impedance matching network [15] and power divider networks [16]. Recently, methods for miniaturizing dual-band or triple-band antenna have also been proposed.…”

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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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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“…Although the structure of FPQHA and planar IFA is already very small, the applications on UAV still puts forward higher requirements on miniaturization of antenna system. Recently, several methods of antenna miniaturization are developed, including inserting dielectric loading [28], folding the helix antenna arms [29] [30], applying different helix turn angles [31], using stepped-width arms [32], using impedance matching network [33] and power divider networks [34].…”

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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“…For example, winding, [2][3][4][5][6][7][8][9] or folding [10][11][12][13][14][15] helical arms can be a good choice for the QHA miniaturization. Dielectric loading method, that is, using material with a high dielectric constant, also reduces the size of a QHA, 16,17 this method has the most compact size, but the bandwidth is very narrow. It reflects the contradiction between the dielectric loading and the large bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized wideband quadrifilar helix antenna for satellite navigation application

Wang

Zhao

et al. 2020

Micro & Optical Tech Letters

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In this article, we present a method for designing miniaturized and broadband quadrifilar helix antenna, which has better bandwidth than other smaller antennas and more compact than larger bandwidth antennas. The antennae in this design have same size with axial lengths of 24 mm and diameters of 18 mm. The antennae are miniaturized by folded arms and dielectric loading. In both cases, a short pin is added to adjust the impedance matching and broaden the bandwidth. Inside and outside diameters of the loading dielectric cylinder are the parameters used for controlling the center frequency, which can be shifted between 1.2 and 1.8 GHz. An antenna with a central frequency of 1.5 GHz was simulated and measured to verify the design. In addition, this design could provide bandwidth of 100 MHz for satellite navigation application. Two antennae, operating at 1.227 and 1.575 GHz with 100 MHz bandwidth, are simulated. The 1.227 GHz antenna covers GPS L2, BEIDOU B2 and B3, GLONASS G2, and Galileo E5b bands. The 1.57 GHz antenna covers GPS L1, BEIDOU B1, B1C, B1I, and Galileo E1 bands.

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Design of a Compact and Wideband Quadrifilar Helix Antenna

Cited by 6 publications

References 1 publication

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

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

Miniaturized wideband quadrifilar helix antenna for satellite navigation application

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