High-power steerable short-wave antennas

Jacobson, H.P.; Smith, Carl E.; Riggs, Richard

doi:10.1109/11.1435

Cited by 1 publication

(1 citation statement)

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“…Out of many possible logarithmic variants, the log-periodic dipole array (LPDA) has become popular, probably because of its design and implementation simplicity. Wire-based or printed forms of LPDAs have been traditionally applied in broadband applications, such as shortwave radio [14,15]. Lately, LPDAs have also been effectively employed in nonconventional applications, such as wireless sensor networks, which need a larger bandwidth or use multiple operational bands [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A Highly Bendable Log-Periodic Array Antenna for Flexible Electronics

Abutarboush¹,

Siddiqui²,

Wali³

et al. 2020

PIER M

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An eleven element log-periodic dipole-array (LPDA) antenna, occupying a surface area of only 90 × 52 mm 2 , printed on an ultra-thin flexible Kapton substrate of thickness 0.035 mm, is proposed. The antenna operates with a stricter 10 dB reflection coefficient bound in the frequency bands 2.75-3.53 GHz and 4-6.2 GHz. For a less stringent bound of 6 dB (which is acceptable for wearable applications), it operates in the wider range of 2.7-6.8 GHz. The antenna has an end-fire radiation pattern with a maximum measured gain of 6 dBi. The flexibility of the antenna is illustrated by reflection and radiation pattern measurements for three different radii, i.e., 50, 30, and 10 mm in both the convex and concave configurations. It is experimentally demonstrated that LPDA exhibits stable input-impedance characteristics and consistent radiation properties over the whole operating band under all bending conditions. The low cost, light weight, and flexible design, as well as the broadband performance in both concave and convex bent configurations, prove the suitability of the antenna for the contemporary flexible electronic devices.

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