Ultra Wideband Antennas

Galván-Tejada, Giselle M.; Peyrot-Solis, M. A.; Aguilar, Hildeberto Jardón

doi:10.1201/b18624

Cited by 30 publications

(12 citation statements)

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“…For the design of the antenna, the curve of the arms follows (1). 12 y A px = ± exp( ), (1) where y is the half separation dimension, x is the length dimension, A is taken as a constant, and p is a parameter called magnification factor, which determines the beamwidth. According to Galvan-Tejada et al, 12 a good tradeoff is obtained when A = 0.125, and p = 0.052.…”

Section: Antenna Designmentioning

confidence: 99%

“…12 y A px = ± exp( ), (1) where y is the half separation dimension, x is the length dimension, A is taken as a constant, and p is a parameter called magnification factor, which determines the beamwidth. According to Galvan-Tejada et al, 12 a good tradeoff is obtained when A = 0.125, and p = 0.052. The final dimensions were found by an optimization process using the electromagnetic simulator HFSS, including the shape and size of the balun.…”

Section: Antenna Designmentioning

confidence: 99%

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Four‐port MIMO Vivaldi antenna for access points

Lilian,

José,

Hildeberto

et al. 2024

Micro & Optical Tech Letters

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In this article, a 4‐port multiple input, multiple output (MIMO) antenna array is presented, based on a Vivaldi design for nonplanar applications like access points above 6 GHz. The antenna is configured with four Vivaldi antennas arranged orthogonally, one to each other, to increase the electromagnetic isolation among elements. The Vivaldi element is fed with a microstrip with an integrated balun in only one arm, and each arm is set in an antipodal position to the other, giving an easy‐to‐design and build prototype, with no complicated feeding techniques. Each antenna plane has dimensions of 90 × 40 mm2. The array presents a bandwidth from 5.3 GHz to beyond 20 GHz, with electromagnetic isolation above 20 dB, an envelope correlation coefficient below 0.001 for the entire bandwidth, giving a diversity gain around 20 dB, and a total active reflection coefficient below −10 dB from 7 to 20 dB, fulfilling the metrics for MIMO applications.

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Section: Antenna Designmentioning

confidence: 99%

Section: Antenna Designmentioning

confidence: 99%

Four‐port MIMO Vivaldi antenna for access points

Lilian,

José,

Hildeberto

et al. 2024

Micro & Optical Tech Letters

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“…The UWB (ultra-wideband) radio demonstrates features such as broad bandwidth, low power spectrum levels, high data-rate transmission, good phase linearity, and auspicious radiation performance [ 1 ]. As a result, the UWB technology has promising prospects in diverse applications, such as the Internet of Things (IoT), surveillance systems, wireless sensor networks, and medical applications [ 2 , 3 ]. Since the year 2002, researchers have intensified their efforts in this area after the allocation of the frequency range 3.1–10.6 GHz for unlicensed UWB indoor wireless communication by the United States Federal Communication Commission (FCC) [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

A Shorted Stub Loaded UWB Flexible Antenna for Small IoT Devices

Ali

Awan

Alzaidi

et al. 2023

Sensors

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In this manuscript, a compact in size yet geometrically simple Ultra-Wideband (UWB) antenna is demonstrated. The flexible-by-nature substrate ROGERS 5880, having a thickness of 0.254 mm, is utilized to design the proposed work. The antenna configuration is an excerpt of a traditional rectangular monopole antenna resonating at 5 GHz. Initially, a pair of triangular slots are employed to extend the impedance bandwidth of the antenna. In addition, a semi-circular-shaped, short-ended stub is connected at the upper edges of the patch to further increase the operational bandwidth. After optimization, the proposed antenna offers UWB ranging from 2.73–9.68 GHz, covering almost the entire spectrum allocated globally for UWB applications. Further, the antenna offers a compact size of 15 × 20 mm2 that can easily be integrated into small, flexible electronics. The flexibility analysis is done by bending the antenna on both the x and y axes. The antenna offers performance stability in terms of return loss, radiation pattern, and gain for both conformal and non-conformal conditions. Furthermore, the strong comparison between simulated and measured results for both rigid and bent cases of the antenna, along with the performance comparison with the state-of-the-art, makes it a potential candidate for present and future compact-sized flexible devices.

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“…Horn antennas, TEM horn antennas, and various types of microstrip antennas have wide usage areas for these systems. 1 The design of Vivaldi antennas is always among the hottest topics due to some of their advantages, such as high gain, low cost, easy manufacturing, suitability for UWB signals, and easy impedance matching to feed the line using microstripline modeling methods. Also, as planar Vivaldi antennas have no cut-off frequency, this attribute combined with their size makes them appropriate for UWB systems.…”

Section: Introductionmentioning

confidence: 99%

Partially dielectric loaded planar Vivaldi array antenna for forward‐looking GPR applications

Caliskan,

Hoşgör,

Turk

et al. 2023

Micro & Optical Tech Letters

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This paper presents a novel two‐element partially dielectric loaded planar Vivaldi antenna array for ultra‐wideband applications. This array is capable of operating between 380 MHz and 3 GHz and is designed on a 1.6‐mm thick low‐cost FR4 substrate with total size of 25 × 330 × 430 mm3. Innovative approaches to various gain enhancement techniques such as partial dielectric loading, corrugations, and U‐shaped back reflector used for planar Vivaldi antennas, are collectively employed in this design. Various elements of the array are interconnected. The two‐element Vivaldi array is fed by using a power divider. The array is designed by using a full‐wave three‐dimensional EM simulation tool. The designed antenna is manufactured and then measured. The simulation and measurement results are found to be consistent with each other.

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Ultra Wideband Antennas

Cited by 30 publications

References 0 publications

Four‐port MIMO Vivaldi antenna for access points

Four‐port MIMO Vivaldi antenna for access points

A Shorted Stub Loaded UWB Flexible Antenna for Small IoT Devices

Partially dielectric loaded planar Vivaldi array antenna for forward‐looking GPR applications

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