Results 11 to 20 of about 27,684 (298)
A New Observation in Spiral and Curl Antenna Configurations above the Ground Plane
Applied Sciences, 2022 We report here that spiral and curl antennas are essentially the same when using the moment method. This aids in the understanding and design of the two antennas, and serves as the groundwork for new ideas regarding antennas.
Kazuhide Hirose +2 more
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An Archimedean Spiral Antenna for Generation of Tunable Angular Momentum Wave
IEEE Access, 2021 In this paper, an Archimedean spiral antenna has been developed to flexibly radiate orbital angular momentum (OAM) wave with tunable modes. The operation mechanism for generation of the OAM wave is elaborated in terms of phases of the currents flowing on
Yan Shi, Quan Wei Wu, Jie Ming
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Mechanics Design of Conical Spiral Structure for Flexible Coilable Antenna Array
International Journal of Aerospace Engineering, 2022 Limited by the effective launch capacity of a rocket, the deployable antenna is very important in the design of spaceborne antenna array. Compared to traditional deployable antenna, flexible coilable antenna array has higher surface precision and better ...
Hairui Wang +6 more
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A low‐profile wideband spiral antenna with multiple stopbands
IET Microwaves, Antennas & Propagation, 2023 A low‐profile spiral antenna with three stopbands (2.55 GHz band, 3.85 GHz band, and 5.45 GHz band) is developed. The stopbands are generated using three pairs of slots cut into the spiral arms.
Masahiro Tanabe, Hisamatsu Nakano
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3-D-Printed Spiral Leaky Wave Antenna With Circular Polarization
IEEE Open Journal of Antennas and Propagation, 2023 This article presents the design, manufacturing and measurement of a fully dielectric leaky wave antenna operating at 18 GHz. The antenna is composed of a grounded dielectric substrate with a top dielectric Archimedean spiral corrugation, which allows ...
Tomas Lira-Valdes +2 more
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Radiation pattern reconfigurable fm antenna [PDF]
, 2019 In this work, a radiation pattern reconfigurable antenna design using compact printed spiral monopoles that operates at 102 MHz is reported. The proposed antenna changes its radiation behaviour that responds towards a desired direction with the use of ...
Balanis C.A. +16 more
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Design of Conformal Spiral Dual-Band Antenna for Wireless Capsule System
IEEE Access, 2021 This paper presents a conformal spiral antenna that is miniaturized and with dual-resonant for the wireless implantable capsule system. The spiral antenna conforms to a swallowable capsule with a radius of 3 mm and a length of 26 mm without occupying the
Kuo Liu +7 more
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Nanoscale Research Letters, 2018 Antenna-coupled micro-bridge structure is proven to be a good solution to extend infrared micro-bolometer technology for THz application. Spiral-type antennas are proposed in 25 μm × 25 μm micro-bridge structure with a single separate linear antenna, two
Jun Gou +4 more
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Microstrip to parallel strip balun as spiral antenna feed [PDF]
, 2012 This paper presents the design and implementation of a microstrip to parallel strip balun which are frequently used as balanced antennas feed. This wideband balun transition is composed of a parallel strip which is connected to the spiral antenna and a ...
Coetzee, Jacob +2 more
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Fabric equiangular spiral antenna [PDF]
2006 IEEE Antennas and Propagation Society International Symposium, 2006 In this paper, a fabric equiangular spiral has been shown to perform comparably to a conventional copper-clad laminate spiral of the same design. Although the fabric antenna was supported by a fairly lossy substrate, and the conductivity of the arms is less than that of copper, the effects of these loss mechanisms appear to be negligible.
J.A. Dobbins +6 more
openaire +1 more source