Transmission line analysis of the Archimedean spiral antenna in free space

Chen, Teng-Kai; Huff, Gregory H.

doi:10.1080/09205071.2014.909295

Cited by 8 publications

(6 citation statements)

References 22 publications

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“…For the solution of the former task within the achievement of the overall aim of this work, data on the parameters of Archimedean helical antennas reported earlier [26] were used. Those results suggest that the greatest UHF electromagnetic radiation energy loss in such antennas occurs if the following conditions are satisfied [26]:…”

Section: Methodsmentioning

confidence: 99%

Improved technology of frequency-selective UHF electromagnetic shields containing helical elements

Boiprav

Bogush

2022

MoEM

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An improved technology of frequency-selective electromagnetic shields has been considered. The technology has been improved by embedding classic Archimedean helical elements made from foiled materials into the bulk of the shields for the improvement of the frequency-selective performance of the shields and pinning of these elements in the bulk of the shields by means of fusion bonding. These design features provide for the main advantage of the improved technology in comparison with counterparts, i.e., lower time consumption. The technology has been improved in the following two aspects: 1) identification of helical element parameters providing for the greatest energy loss of the UHF electromagnetic radiation interacting with the helical elements; 2) identification of the optimum helical element arrangement in the shield bulk providing for the smallest transmission and reflection coefficient of the UHF electromagnetic radiation by the shields. Technology improvement in accordance with the former of the above aspects has been achieved based on analysis of publications dealing with mathematical simulation and study of the parameters of UHF electromagnetic radiation transmission by planar helical antennas. Technology improvement in accordance with the latter aspect has been achieved based on experimental data. Test shields have been fabricated with specifically arranged embedded helical elements, and comparison has been made between the UHF electromagnetic radiation transmission and reflection coefficients of the shields. Shields fabricated in accordance with the improved technology suggested herein show good promise for the electromagnetic noise protection of electronic devices.

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Section: Methodsmentioning

confidence: 99%

Improved technology of frequency-selective UHF electromagnetic shields containing helical elements

Boiprav

Bogush

2022

MoEM

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“…The slotted spiral antenna has a radiation mechanism similar to that of the monofilar spiral, where the spiral slot cuts the travelling wave, consequently, two orthogonal fields are superimposed to each other to generate a circular polarization with a tilted beam. The Archimedean spiral antenna consists of two arms, each arm have radius R 1 and R 2 , and the relation between them is given by [26].…”

Section: Slotted Spiral Antenna Element Designmentioning

confidence: 99%

“…The Archimedean spiral antenna consists of two arms, each arm have radius R 1 and R 2 , and the relation between them is given by [26].

R_{2} = g_{r} θ_{w} + R_{1}

where g r is the growth rate, θ w is the winding angle, R 1 is the minimum radius of the spiral, and R 2 is the maximum radius.…”

Section: Slotted Spiral Antenna Element Designmentioning

confidence: 99%

A novel circularly polarized slotted substrate integrated waveguide antenna array for satellite applications

Eid

Salama

Elkamchouchi

2021

IET Microwaves Antenna & Prop

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In this article, three novel slotted substrate integrated waveguide (SIW) antenna elements are demonstrated with different radiator configurations, namely, two arms Archimedean antenna, single-arm spiral antenna (monofilar), and four concentric circular loops antenna. Additionally, their near, as well as far-field characteristics, have been investigated. The two arms Archimedean spiral antenna has a superior radiation characteristic of 18% return loss bandwidth (RLBW), 12% boresight axial ratio bandwidth (ARBW), and five dBi directivity. Furthermore, a 1 � 10 slotted SIW travelling wave antenna array has been designed, fabricated, and measured. The performance of the proposed antenna array versus the last reported antenna was evaluated and the proposed antenna array performance is superior to that of the others. Moreover, the measurements of the proposed array have a good agreement with the simulation results in which, 35%, 13% RLBW, and ARBW, respectively, have been achieved. The directivity of the proposed antenna array is 14 dBi.How to cite this article: Eid AM, Salama AA, Elkamchouchi HM. A novel circularly polarized slotted substrate integrated waveguide antenna array for satellite applications.

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“…Figure 1a shows a schematic of the four-armed Archimedean spiral used in this work [14]. Each arm is constructed based on the expressions in Equation (1) and thickened to obtain width w .…”

Section: Design Of the Conformal Fssmentioning

confidence: 99%

“…Spiral elements are circularly-polarized [14,15] and are utilized in this study to mitigate detuning and response degradation caused by angular and polarization dependency, observed in linearly-polarized elements on folded surfaces [1,2]. A densely packed spiral lattice is printed on each facet of the Miura-ori pattern, to further reduce the angular dependency.…”

Section: Introductionmentioning

confidence: 99%

Origami-Inspired Frequency Selective Surface with Fixed Frequency Response under Folding

Sessions

Cook

Fuchi

et al. 2019

Sensors

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Filtering of electromagnetic signals is key for improved signal to noise ratios for a broad class of devices. However, maintaining filter performance in systems undergoing large changes in shape can be challenging, due to the interdependency between element geometry, orientation and lattice spacing. To address this challenge, an origami-based, reconfigurable spatial X-band filter with consistent frequency filtering is presented. Direct-write additive manufacturing is used to print metallic Archimedean spiral elements in a lattice on the substrate. Elements in the lattice couple to one another and this results in a frequency selective surface acting as a stop-band filter at a target frequency. The lattice is designed to maintain the filtered frequency through multiple fold angles. The combined design, modeling, fabrication, and experimental characterization results of this study provide a set of guidelines for future design of physically reconfigurable filters exhibiting sustained performance.

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Transmission line analysis of the Archimedean spiral antenna in free space

Cited by 8 publications

References 22 publications

Improved technology of frequency-selective UHF electromagnetic shields containing helical elements

Improved technology of frequency-selective UHF electromagnetic shields containing helical elements

A novel circularly polarized slotted substrate integrated waveguide antenna array for satellite applications

Origami-Inspired Frequency Selective Surface with Fixed Frequency Response under Folding

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