L-band compact printed quadrifilar helix antenna with &amp;#x2018;Iso-Flux&amp;#x2019; radiating pattern for stratospheric balloons telemetry

Fonseca, Nelson J. G.; Hebib, Sami; Aubert, Hervé

doi:10.1109/aps.2008.4619229

Cited by 8 publications

(5 citation statements)

References 3 publications

(4 reference statements)

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“…Miniaturization techniques are still of interest to maintain acceptable dimensions in spite of the low operating frequency. For example, non‐deployable helix antennas have been considered at VHF, 32,48,49 adapted from developments at L‐band 50,51 . Meandering techniques were applied to shorten the axial length of quadrifilar helix antennas, with reduction factors ranging from 48% up to 72%, while still providing in some cases an iso‐flux radiation pattern 50,51 .…”

Section: Antenna Solutionsmentioning

confidence: 99%

“…For example, non-deployable helix antennas have been considered at VHF, 32,48,49 adapted from developments at L-band. 50,51 Meandering techniques were applied to shorten the axial length of quadrifilar helix antennas, with reduction factors ranging from 48% up to 72%, while still providing in some cases an iso-flux radiation pattern. 50,51 Another interesting fixed antenna solution considered for AIS applications consists of crossed-dipoles over an artificial magnetic conductor (AMC) ground plane.…”

Section: Fixed Antennasmentioning

confidence: 99%

“…50,51 Meandering techniques were applied to shorten the axial length of quadrifilar helix antennas, with reduction factors ranging from 48% up to 72%, while still providing in some cases an iso-flux radiation pattern. 50,51 Another interesting fixed antenna solution considered for AIS applications consists of crossed-dipoles over an artificial magnetic conductor (AMC) ground plane. 52 This structure provides a low profile, in the order of λ 0 /25 at 162 MHz, while maintaining high aperture efficiency and low back radiation.…”

Section: Fixed Antennasmentioning

confidence: 99%

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Review of antenna technologies for very high frequency Data Exchange Systems

Buendía

Liberto

Goussetis

et al. 2021

Satell Commun Network

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Summary The Automated Identification System (AIS) was originally developed as a terrestrial system tracking vessels near the coastline. Dedicated channels were allocated within the spectrum historically reserved for maritime applications in the very high frequency (VHF) band, enabling long range communications, up to a few kilometers. There have been various initiatives in the last decade that extended this system with a space segment, enabling global monitoring of vessels beyond the range of terrestrial stations. Recently, the World Radiocommunication Conference has allocated frequencies for the extension of this system to a two‐way VHF Data Exchange System (VDES) via satellite. This requires to adapt spaceborne antenna solutions previously developed for AIS, particularly for missions using small satellites and CubeSats. This paper provides a timely review of existing VHF antenna solutions and new concepts under development which could be applicable to VDES missions. Some key metrics are identified to provide a comparative study between various candidate solutions. Considering the range of possible missions, from secondary payloads on‐board larger satellites to dedicated constellations, it is believed that a number of antenna products can find application in future VDES space‐based infrastructure.

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Section: Antenna Solutionsmentioning

confidence: 99%

Section: Fixed Antennasmentioning

confidence: 99%

Section: Fixed Antennasmentioning

confidence: 99%

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Review of antenna technologies for very high frequency Data Exchange Systems

Buendía

Liberto

Goussetis

et al. 2021

Satell Commun Network

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“…The wire-supported QHA is more suitable for low-frequency applications (VHF band), whereas the printed techniques are widely used for high-frequency applications (ultra-high frequency band or upper bands). Many QHAs have been reported in the literature including wire-supported QHA [1][2][3][4][6][7][8][9] and printed QHA [5,[10][11][12][13][14][15]. The most widely used QHAs are implemented on cylindrical surface (helix wires or printed lines are rolled up on cylindrical surfaces) but the helix can be formed to have also conical [16], spherical [17] or square surfaces [18].…”

Section: Introductionmentioning

confidence: 99%

“…Several miniaturisation techniques have been reported in the past years including the use of sinusoidal profiles [7][8][9][10][13][14][15][16], periodic triangular [19], periodic trapezoidal [19], rectangular [10,20] meandered [11,12], fractal profiles [21] or nonlinear functions [22]. A review concerning CQHAs and related patents is presented in [23].…”

Section: Introductionmentioning

confidence: 99%

Miniaturisation of quadrifilar helical antenna: impact on efficiency and phase centre position

Takacs

Aubert

Belot

et al. 2013

IET Microwaves, Antennas & Propagation

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This study addresses the intrinsic limitations of the miniaturisation of very‐high frequency‐band quadrifilar helical antennas. Several designs with a relative size (i.e. the ratio between antenna's heights after and before the miniaturisation) down to 27% are obtained using an optimisation process based on intensive full‐wave electromagnetic simulations. Reported simulation and experimental results underline the impact of height reduction on the antennas main descriptors: radiation pattern, directivity, polarisation purity, input matching, efficiency and maximum achievable gain. It was observed that the efficiency and the gain do not decrease linearly with the reduction of the antenna height and the input matching is slightly improved for the compact antennas. The shape of radiation pattern and the polarisation purity are not significantly degraded for relative size down to 27%.

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