Broadband all‐metal Vivaldi antenna with <scp>Rexolite</scp> inserted slot edge

Ari, Onur; Kīzīlay, Ahmet

doi:10.1002/mop.33177

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…In particular, when the opening of the exponential slot is small, the electromagnetic energy is bound between the two metal arms forming the antenna, so the radiation is weak; while energy emission increases as the electromagnetic field travel along the exponential slot, thus favoring the energy emission into free-space at the antenna opening [13]. erefore, the minimum distance of the exponential slot line of the antenna determines the highest operating frequency of the antenna, whereas the maximum opening size of the slot line limits the lowest operating frequency of the antenna [14][15][16].…”

Section: Vivaldi Antenna Designmentioning

confidence: 99%

Low-Cost Lens Antenna Design for Microwave Moisture Detection

Zhang

Yin

et al. 2022

International Journal of Antennas and Propagation

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In this study, a novel Vivaldi antenna with dimensions of 100 mm × 85 mm × 1.6 mm, designed for a moisture measurement system, is built to enhance the gain of conventional Vivaldi antennas in the low-frequency band to suit the needs of moisture detection. The fence structure and choke slot are modified to enhance the antenna’s radiation properties in the low-frequency band, and simulation is performed to determine how different structural parameters affect the antenna’s performance. The results show that in the frequency band of 5-6 GHz, the voltage standing-wave ratio (VSWR) of the antenna is less than 2, and the gain at 5.8 GHz reaches 16.2 dBi after installing the lens. Compared with conventional unmodified Vivaldi antennas, the gain at 5.8 GHz increases by approximately 6.11 dBi. The antenna is then processed and measured, and the measured results are in good agreement with the simulated results; hence, the antenna can be widely used in the field of moisture detection.

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Section: Vivaldi Antenna Designmentioning

confidence: 99%

Low-Cost Lens Antenna Design for Microwave Moisture Detection

Zhang

Yin

et al. 2022

International Journal of Antennas and Propagation

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Compact frequency‐reconfigurable circular patch antenna with varactor diode: Design, tuning, and compactness optimization

Cildir,

Gozel

2024

Micro & Optical Tech Letters

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In this study, a frequency‐reconfigurable circular patch antenna with a varactor diode has been presented. The proposed antenna has been designed and investigated in four steps: circular patch antenna (Antenna 1), antenna with double slots (Antenna 2), antenna with quad slots (Antenna 3), and antenna with varactor diode (Antenna 4). The proposed antenna has been made compact with rectangular slots and a hyperabrupt junction tuning varactor diode (SMV1249‐079LF). The proposed antenna has been designed and produced in 32 × 32 × 0.64 mm3 dimensions, approximately 80% minimized compared to a microstrip circular patch antenna operating at 850 MHZ resonance frequency. This frequency‐reconfigurable antenna can perform between the range of 0.85–1.3 GHz frequency with 0–3 V DC voltage tuning of the varactor diode. So, using with the varactor diode, the proposed antenna has obtained a 53% tuning range between 0.85 and 1.3 GHz frequencies. This study offers a different antenna design, compactness, and high tuning ratio compared to previous studies. This frequency reconfigurable antenna can be preferred with its wideband structure in different communications areas and wireless energy transfer systems.

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A 28‐GHz Vivaldi Array Antenna With Power Divider Structure for Achieving Wide Band and Gain Enhancement

Chung,

Udris,

Lin

et al. 2024

International Journal of Antennas and Propagation

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This article presents a planar Vivaldi array antenna based on a power divider structure. A half‐loop defected ground structure (DGS) is performed to decrease the mutual coupling between antennas in the bottom layer of the substrate. The proposed Vivaldi antenna has a 1 × 8 power divided microstrip line structure and performs well in antenna gain and beam directivity. To validate the design, the proposed high‐gain planar Vivaldi array antenna was manufactured, and the measured results were very similar to the simulated one. The size of the proposed antenna is 67 × 44 mm2, the application band is 25–27.3 GHz, and the measured peak gain is 12.6 dBi. The antenna is simulated with an electromagnetic power density (PD) of 28.5 W/m2 at 1 cm2 and 7.27 W/m2 at 4 cm2, which are in compliance with the FCC regulations. Therefore, this antenna is suitable for wearable devices and is applied to n257, n258, and n261.

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Broadband all‐metal Vivaldi antenna with Rexolite inserted slot edge

Cited by 3 publications

References 35 publications

Low-Cost Lens Antenna Design for Microwave Moisture Detection

Low-Cost Lens Antenna Design for Microwave Moisture Detection

Compact frequency‐reconfigurable circular patch antenna with varactor diode: Design, tuning, and compactness optimization

A 28‐GHz Vivaldi Array Antenna With Power Divider Structure for Achieving Wide Band and Gain Enhancement

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