Phase center controlling in Vivaldi antenna: review and development of the story

Hatami, Ahmad; Arezomand, Afsaneh Saee; Zarrabi, Ferdows B.

doi:10.1007/s10825-020-01463-z

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…While size is a challenge when designing 3D models, printed Vivaldi antennas have been used to reduce their size complexity [6][7][8]. Vivaldi antennas have been used in several fields like satellites, radars, and medical applications [9][10][11]. 5G communications have been carried out using Vivaldi antennas [12][13][14]26].…”

Section: Introductionmentioning

confidence: 99%

Dual-band 4-port Vivaldi MIMO Antenna for 5G mmWave Applications at 28/39 GHz

Ramyasree,

Suman

2023

PIER M

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A compact new dual band 4-port Vivaldi MIMO (Multiple-Input-Multiple-Output) antenna is designed for 5G mmWave applications. The proposed MIMO antenna resonates at two frequencies 28 GHz and 39 GHz, and it has dimensions 22 × 22 × 0.79 mm 3 . The Vivaldi structure etched on ground plane acts as a defected ground structure (DGS). The proposed antenna is fabricated on Rogers RT/duroid 5880 material having 0.79 mm thickness and 2.2 dielectric material. For high frequency and broad band applications RT/duroid material is suited to maintain low dielectric loss, and it works in high temperature places also. For the proposed four port Vivaldi MIMO antenna, the isolation between any two antenna elements is obtained below −21.59 dB. The bandwidths achieved for two bands are 4.64 95 GHz) at 28 GHz resonant frequency and 2.69 04 GHz) at 39 GHz resonant frequency for 4-port MIMO antenna. The gain achieved at 28 GHz is 5.65 dB and at 39 GHz is 5.53 dB. It is possible to achieve MIMO performance parameters such as ECC < 0.003, DG = 10, CCL < 0.4 (bits/s/Hz), TARC < −10 dB, and MEG ratio is 1.01. Simulated and measured results are compared, and the antenna is designed using ansys HFSS tool.

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Section: Introductionmentioning

confidence: 99%

Dual-band 4-port Vivaldi MIMO Antenna for 5G mmWave Applications at 28/39 GHz

Ramyasree,

Suman

2023

PIER M

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“…e Vivaldi antenna is developed as an ultrawideband antenna with a directive pattern and high gain, which is attractive for radar application and microwave sensing [4]. When the antenna is operational, the electromagnetic wave guided by the exponential slot line realized on the front metal layer excited by a lower microstrip line is radiated into free-space [5].…”

Section: Introductionmentioning

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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