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European Transactions on Telecommunications, 1990
AbstractThe Archimedean printed spiral antenna is investigated by numerical methods, usjng the Green's function for stratified media.The integral equation for the current distribution is obtained by imposing the condition of vanishing total electric field tangential to the conducting strip and solved by application of the method of moments.Knowledge of
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AbstractThe Archimedean printed spiral antenna is investigated by numerical methods, usjng the Green's function for stratified media.The integral equation for the current distribution is obtained by imposing the condition of vanishing total electric field tangential to the conducting strip and solved by application of the method of moments.Knowledge of
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Broadband additive spiral antenna
2017 Antenna Measurement Techniques Association Symposium (AMTA), 2017A novel low cost and high performance miniaturized broadband Additive Spiral Antenna (ASA) technology (patent pending) has been developed. Unlike other conventional spiral designs, this new spiral antenna leverages Additive Manufacturing (AM) 3D zig-zag shapes to achieve an efficient slow wave radiation structure for extending spiral's low frequency ...
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Flexible step-impedance spiral antenna
2013 11th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services (TELSIKS), 2013In this paper, novel ultra-wideband flexible step-impedance spiral antenna (SIA) is proposed.
Vasa Radonic, Alexander Rusakov
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IEEE Antennas and Propagation Society Symposium, 2004., 2004
A spiral antenna is a radiation element that radiates a circularly polarized (CP) wave over a wide frequency bandwidth. The spiral is often backed by a conducting plane to change the inherently bidirectional beam to a unidirectional one. The radiation pattern has been qualitatively and quantitatively investigated (Nakano, H. 1987; Nakano et al., 1988).
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A spiral antenna is a radiation element that radiates a circularly polarized (CP) wave over a wide frequency bandwidth. The spiral is often backed by a conducting plane to change the inherently bidirectional beam to a unidirectional one. The radiation pattern has been qualitatively and quantitatively investigated (Nakano, H. 1987; Nakano et al., 1988).
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Four-Armed Spiral-Helix Antenna
IEEE Antennas and Wireless Propagation Letters, 2012An antenna formed by the union of a four-armed, reflective-backed spiral antenna with a top-fed quadrifilar helix, operating over the 0.35-2.6-GHz band, is presented. The antenna features a novel dual-layering scheme that allows the modal impedance of the four-armed spiral to be greatly reduced while maintaining the desirable self-complementary ...
M. J. Radway, D. S. Filipovic
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Square Spiral Microstrip Patch Antenna
2019 International Conference on Electrical, Communication, and Computer Engineering (ICECCE), 2019Our project describes the analysis and design of square spiral microstrip patch antenna for multi band frequencies. As compared with old conventional antennae, microstrip patch antennae have more advantages and better prospects. Such antennae are light-weighted, circularly polarized and can be easily fabricated.
Anum Zulqarnain +3 more
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Equiangular microstrip spiral antennas
IEEE Antennas and Propagation Society International Symposium. 1995 Digest, 2002The input impedance and the broadside axial ratio of a perturbed equiangular microstrip spiral antennas are examined. With the perturbation (modification factor /spl delta/) on its shape, the broadside axial ratio of the equiangular spiral can be significantly reduced. A 21% 3-dB axial ratio bandwidth has been observed. The antenna input resistance can
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Proceedings of International Conference on Antenna Theory and Techniques, 2009
The mathematical model of radiation characteristics of the sphero-conical helical antenna in the form of extending conductors is offered. This model allows not only to simplify an essentially calculation, but the analysis of similar structures. The results of theoretical and experimental research of the sphero-conical helical antenna are also discussed
Lukjanchikov, A. V. +2 more
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The mathematical model of radiation characteristics of the sphero-conical helical antenna in the form of extending conductors is offered. This model allows not only to simplify an essentially calculation, but the analysis of similar structures. The results of theoretical and experimental research of the sphero-conical helical antenna are also discussed
Lukjanchikov, A. V. +2 more
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Natural and metamaterial spiral antennas
2012 IEEE International Workshop on Antenna Technology (iWAT), 2012A low-profile cavity-backed spiral antenna with an absorbing strip exhibits wideband radiation characteristics. An EBG reflector is useful in designing a small spiral for medium frequency bandwidth operation. A modified EBG reflector contributes to mitigation of the partial deterioration of the antenna characteristics in a low-profile equiangular ...
H. Nakano +3 more
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Frequency-Reconfigurable Archimedean Spiral Antenna
IEEE Antennas and Wireless Propagation Letters, 2013In this letter, a frequency-reconfigurable Archimedean spiral antenna is presented. The proposed antenna consists of a two-arm spiral fed by a coplanar waveguide (CPW) feeding line. A pair of meandered slotlines is implemented at both sides of the CPW-fed slot on the spiral antenna to introduce frequency reconfiguration.
F. D. Dahalan +6 more
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