Compact Spiral Element for Wideband Beam-Steering Arrays

Ahn, Jinsook; Hun, Seung; Gook, Seung; Yoon, Young Joong

doi:10.1109/lawp.2017.2692766

Cited by 11 publications

(13 citation statements)

References 14 publications

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“…The dielectrics are FR‐4 substrates with a thickness of 1.524 mm and permittivity of 4.5. The initial design of the ASA was taken from Ref . The spiral shape is given by the following polar equation:

normalr = normala normalθ,

where r is the radius forming the antenna, a is the Archimedean growth rate, and θ is an angle (radian).…”

Section: Antenna Designmentioning

confidence: 99%

“…The spiral shape is given by the following polar equation:

normalr = normala normalθ,

where r is the radius forming the antenna, a is the Archimedean growth rate, and θ is an angle (radian). To improve the bandwidth of the spiral antenna with expansion to lower frequencies, an annular ring was added to the outside of the spiral, with the same center point …”

Section: Antenna Designmentioning

confidence: 99%

“…The initial design of the ASA was taken from Ref. 4 The spiral shape is given by the following polar equation:…”

Section: Antenna Designmentioning

confidence: 99%

“…One of these developments is the ASA with an annular ring for wideband characteristics, which is the basis of this paper. 4 As an extension of this research, a novel antenna with a hollow dielectric substrate is proposed in this paper to improve the bandwidth at a low frequency. This method has an advantage of low-profile because there is not any additional structure like cavity-backed.…”

Section: Introductionmentioning

confidence: 98%

“…Recently, many studies have been performed to develop a novel radiator with a small size and wideband characteristics. One of these developments is the ASA with an annular ring for wideband characteristics, which is the basis of this paper …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Miniaturization of Archimedean spiral antenna for wideband beamforming arrays

Park

Yoon

2018

Micro & Optical Tech Letters

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This paper proposes a compact spiral antenna with an improved bandwidth and miniaturized radiator for 3:1 (2‐6 GHz) wideband antenna beamforming arrays. The proposed antenna is composed of an Archimedean spiral antenna (ASA) with an annular ring and additional dielectric substrates with a circular hole. The spiral and ring radiators are printed between two substrates made of FR‐4, with a dielectric constant of 4.5 and thickness of 1.524 mm. The size of the antenna is 30 mm × 30 mm × 3.048 mm (0.2λ × 0.2λ × 0.02λ at the lowest frequency). The reduction rate of size is up to 15% compared with a conventional ASA using an annular ring, and it also has low‐profile characteristics.

show abstract

normalr = normala normalθ,

where r is the radius forming the antenna, a is the Archimedean growth rate, and θ is an angle (radian).…”

Section: Antenna Designmentioning

confidence: 99%

“…The spiral shape is given by the following polar equation:

normalr = normala normalθ,

Section: Antenna Designmentioning

confidence: 99%

“…The initial design of the ASA was taken from Ref. 4 The spiral shape is given by the following polar equation:…”

Section: Antenna Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Miniaturization of Archimedean spiral antenna for wideband beamforming arrays

Park

Yoon

2018

Micro & Optical Tech Letters

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show abstract

Smart Nanotextiles for Communication

Ibanez‐Labiano¹,

Jilani²,

Zhang³

et al. 2022

Smart Nanotextiles

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Together with wireless technology, advances in nanotechnology and rapid and scalable synthesis of nanomaterials including the 2D graphene has transformed the realms of biomedical sciences. Recent research in the areas of drug delivery, cancer therapy, bio-sensing and bio-imaging have exploited the unique structural and physiological features of graphene and its different forms. Along with the Graphene, several other nanomaterials including carbon nanotubes (CNTs), make excellent candidates for applications associated with loading of drugs, cellular imaging, sensing other molecules and in-vivo cancer studies due to their biocompatibility and stability. Assimilating from the fundamentals of electromagnetic, wireless communication, medical and material science, a novel concept of nanonetworks was first introduced in 2008, which stems from the concept that a collection of nanodevices have the potential to harness the innate communication capabilities of the human body, thereby allowing them to cooperate and share information. It is anticipated that the advanced healthcare diagnosis can be realised if an efficient communication mechanism and data transfer are established between these nanodevices.

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Threat detection with millimeter wave conformal antenna array using beamforming and direction of arrival estimation

Peshwe

Kothari

Darwhekar

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this article, an approach for the design of an electromagnetic nonimaging sensor is proposed for the application of threat detection. A millimeter wave (mmWave) conformal antenna array is designed which can act as a sensor node for detecting the threat. The techniques of beam switching and beamforming are employed on the designed array to achieve a directional beam and the optimum number of antenna elements essential for providing 360° coverage after beam steering are computed. Simulations from beamforming achieve better results for less number of antennas compared to beam switching. Thereafter, direction of arrival (DOA) estimation analysis of the arriving signal is performed with the Cramer‐Rao lower bound (CRLB) matrix considering the impact of channel fading along with elevation and azimuthal angles. Channel fading is taken into consideration recognizing its effect at mmWave frequency. These results are further validated with angle estimation from multiple signal classification (MUSIC) algorithm.

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Compact Spiral Element for Wideband Beam-Steering Arrays

Cited by 11 publications

References 14 publications

Miniaturization of Archimedean spiral antenna for wideband beamforming arrays

Miniaturization of Archimedean spiral antenna for wideband beamforming arrays

Smart Nanotextiles for Communication

Threat detection with millimeter wave conformal antenna array using beamforming and direction of arrival estimation

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