Investigation of 3-D Printed, Electrically Small, and Thin Magnetic Dipole Antenna

Kong, Myeongjun; Lee, Suhyeon; Shin, Geonyeong; Nah, Junghyo; Yoon, Ick-Jae

doi:10.1109/lawp.2018.2810238

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…Comparison between characteristic parameters of our electrically small antenna with most recent work of other groups. In the cases, where the characteristic parameters were not readily denoted in references [13][14][15]18,19,21,22], they were indirectly calculated based on the data in the aforementioned references.…”

Section: Dipole Antenna With Split Ring Resonatormentioning

confidence: 99%

“…In this context, metamaterial inspired antenna designs have gained large interest in recent years [1][2][3][4][5][6][7][8][9]. Electrically small antennas (ESAs) moved into the focus of ongoing research [10][11][12][13][14][15], especially those exploiting split-ring resonators (SRRs) [12,[16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…The SRR resonantly emits radiation at its resonance frequency of f SRR = 10.41 GHz while the electric dipole has a design frequency of f d ≈ 25 GHz. Unlike previously reported antenna designs, which partially consist of sophisticated 3-D or multi-layer structures [12,13,[16][17][18][19][20][21], our composite antenna is built from a simple planar stack of just two circuit boards and thus can be manufactured by standard processes. Furthermore, our approach only involves a single subwavelength element as radiator, which enables us to efficiently implement electrically small antennas with a directed radiation pattern.…”

Section: Introductionmentioning

confidence: 99%

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Efficient and Compact Near-Field Coupled Hybrid Antenna Using a Single Radiating Subwavelength Split-Ring Resonator

Dang

Rahm

2019

Electronics

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Modern applications in the realms of wireless communication and mobile broadband Internet increase the demand for compact antennas with well defined directivity. Here, we present an approach for the design and implementation of hybrid antennas consisting of a classic feeding antenna that is near-field-coupled to a subwavelength resonator. In such a combined structure, the composite antenna always radiates at the resonance frequency of the subwavelength oscillator as well as at the resonance frequency of the feeding antenna. While the classic antenna serves as impedance-matched feeding element, the subwavelength resonator induces an additional resonance to the composite antenna. In general, these near-field coupled structures are known for decades and are lately published as near-field resonant parasitic antennas. We describe an antenna design consisting of a high-frequency electric dipole antenna at f d = 25 GHz that couples to a low-frequency subwavelength split-ring resonator, which emits electromagnetic waves at f SRR = 10.41 GHz. The radiating part of the antenna has a size of approximately 3.2 mm × 8 mm × 1 mm and thus is electrically small at this frequency with a product k · a = 0.5 . The input return loss of the antenna was moderate at − 18 dB and it radiated at a spectral bandwidth of 120 MHz. The measured main lobe of the antenna was observed at 60 ∘ with a − 3 dB angular width of 65 ∘ in the E-plane and at 130 ∘ with a − 3 dB angular width of 145 ∘ in the H-plane.

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Section: Dipole Antenna With Split Ring Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient and Compact Near-Field Coupled Hybrid Antenna Using a Single Radiating Subwavelength Split-Ring Resonator

Dang

Rahm

2019

Electronics

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“…Most of them are related to changing the electrical and physical configurations of the antenna as a means of reducing the resonant frequency with acceptable radiation properties. Thus, highly efficient ESAs could take a complex three-dimensional shape, and some trials utilize 3D-printing (3DP) technologies for the easier and faster prototyping of novel and complex antenna designs [16]- [21]. 3DP technology can print an object from a CAD model with an enormous amount of design freedom and is widely used in the various fields such as agriculture, electronics, healthcare, automotive industry, only to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Realization of Electrically Small, Low-Profile Quasi-Isotropic Antenna Using 3D Printing Technology

et al. 2020

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A 3D printed, low-profile, electrically small antenna with a quasi-isotropic radiation pattern is presented herein. It is composed of an electric meandered dipole antenna, and the extended arcs from the meander line mimicking the current flow of the loop antenna. A quasi-isotropic radiation pattern is achieved from the total current flow over the proposed structure. Modern stereolithographic 3D printing and nano-polycrystalline copper coating technologies are used to build a prototype. The measured antenna exhibits a good uniformity in terms of the radiation pattern with a maximum gain deviation of 4.5 dB at 959 MHz and a radiation efficiency of 81 %, close to the computed expectations. The electrical size of the antenna ka is 0.48, and its height is λ 0 /82.32.INDEX TERMS 3D printing, isotropic radiation pattern, electrically small antennas, radiation pattern synthesis.

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“…복잡한 나선형 구조로 인해 제작이 까다로운 전기적 소형 folded spherical helix(FSH) 다이폴 안테나의 경우 [5] , 3D 프린팅 기술을 활용하여 기존 설계 와 유사한 전기적 특성을 구현할 수 있음이 확인되었다 [6] . 또한 복잡한 구조의 제작 용이성을 높일 수 있는 3D 프린 팅 기술의 장점을 활용한 소형 안테나 형상 역시 제안되었 다 [7], [8] . 이들 구조는 3D 프린팅 기술이 아니었으면 샘플 제작을 통한 실험 검증이 어려웠을 것으로 판단된다.…”

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Electrically Equivalent Model Design of a Ku-Band Helical Antenna Matching Section for Ease of 3D Printing Technology Use

Han¹,

Kim²,

Shin³

et al. 2020

J. Korean Inst. Electromagn. Eng. Sci.

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In this study, we design and build a helical antenna operating at the Ku-band using a hybrid 3D printing technology. A non-uniform surface roughness can reduce the conductivity of printed metals. Therefore, through simulation and equations, we demonstrate that a triangular metallic matching section of a helical antenna can be equivalently replaced with a strip-line matching section. As the proposed antenna has fewer physically printed parts, the reduction in the conductivity of the printed metallic parts at high frequencies is avoided. The simulated results are verified experimentally. The impedance characteristics are well matched, whereas the absolute value of the gain is degraded. This might be owing to the non-exact expectation of the material characteristic of the immersed epoxy used for adhesion of the printed antenna part and connector in the simulation.

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Investigation of 3-D Printed, Electrically Small, and Thin Magnetic Dipole Antenna

Cited by 11 publications

References 24 publications

Efficient and Compact Near-Field Coupled Hybrid Antenna Using a Single Radiating Subwavelength Split-Ring Resonator

Efficient and Compact Near-Field Coupled Hybrid Antenna Using a Single Radiating Subwavelength Split-Ring Resonator

Realization of Electrically Small, Low-Profile Quasi-Isotropic Antenna Using 3D Printing Technology

Electrically Equivalent Model Design of a Ku-Band Helical Antenna Matching Section for Ease of 3D Printing Technology Use

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