A directive ultra wideband sinuous slot antenna

Vahdani, M.R.K.; Begaud, Xavier

doi:10.1109/eucap.2006.4584965

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…A 3:1 impedance ratio exponential taper balun [ 38 ] etched on the same material as that of the bow-tie allows the feeding of the structure with a 50

SMA connector. The inset of Figure 12 details the hole used to pass the balun through the AMC.…”

Section: Methodsmentioning

confidence: 99%

A Low-Profile, Triple-Band, and Wideband Antenna Using Dual-Band AMC

Mello

Lepage

Begaud

2023

Sensors

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When a wideband antenna is backed by an artificial magnetic conductor (AMC) reflector, the bandwidth is reduced. With the optimization of the shape of the AMC it is possible to exhibit multiband behavior, but the problem becomes complex if the bands are also intended to be wide. In this study, a methodology that exploits both the expected in-band and out-of-band behaviors of a dual-band AMC was used to design a low-profile, triple-band, and wideband directive antenna. The methodology was validated with a prototype suitable for the European standards of 4G/5G and Wi-Fi 2.4/5/6E, operating within the following bands: 2.4–2.7 GHz, 3.4–3.8 GHz, and 5.17–6.45 GHz. The measured results showed respective peak values of 8.0, 9.1, and 10.5 dBi for the broadside realized gain, front-to-back ratios larger than 19 dB, cross-polarized levels lower than -18 dB, and stable half-power beamwidths within each band. Furthermore, 3 dB gain bandwidths of 34.4%, 19.7%, and 31.0% were also measured.

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“…A 3:1 impedance ratio exponential taper balun [ 38 ] etched on the same material as that of the bow-tie allows the feeding of the structure with a 50

SMA connector. The inset of Figure 12 details the hole used to pass the balun through the AMC.…”

Section: Methodsmentioning

confidence: 99%

A Low-Profile, Triple-Band, and Wideband Antenna Using Dual-Band AMC

Mello

Lepage

Begaud

2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The antennas are intended to present a dipole-like quasi-omnidirectional radiation pattern in a wide range from 2.4 to 6.5 or 7.0 GHz, requiring some special care in the feeding and measurements. An exponential taper balun [28] was chosen as the proper feeding line of both antennas. A bent version of such a balun was designed to minimise interferences in the broadside direction originated from the SMA connector, unavoidably illuminated by the antenna.…”

Section: Fabrication and Measurementsmentioning

confidence: 99%

The bow‐tie antenna: Performance limitations and improvements

Mello

Lepage

Begaud

2022

IET Microwaves Antenna & Prop

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The simple planar shape and wideband input impedance of the bow‐tie antenna make it suitable to diverse wideband applications. However, the radiation pattern of this kind of antenna is not stable and the gain in the broadside direction deteriorates with increasing frequencies. In this article, the operation of both the triangular and the rounded‐edge versions of the bow‐tie antenna is thoroughly investigated and the performance thereof is compared. A technique to maximise such performance, which consists of inserting radially aligned grooves in the radiators' ends, is presented. The bandwidth, defined by a broadside gain of at least 2 dBi and a reflection coefficient magnitude of less than −10 dB, is improved from 85.7% to 97.9% in simulations. Such an improvement is validated through the measurement of two prototypes, in which the presented technique also increases the broadside gain in up to 1.5 dB, with no significant change in the shapes of the radiation patterns and in the reflection coefficient magnitude.

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