Design and Optimization of Compact Printed Log-Periodic Dipole Array Antennas with Extended Low-Frequency Response

Mistry, Keyur K.; Lazaridis, Pavlos I.; Zaharis, Zaharias D.; Loh, Tian Hong

doi:10.3390/electronics10172044

Cited by 14 publications

(7 citation statements)

References 52 publications

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“…Other techniques, such as proximity coupled feed [48], aperture-coupled feed [49,50], and L-shaped feeding probe [51,52], can also be used. Some other configurations are suggested, such as slotted antenna [53,54], log-periodic array [55], E-shaped patch [56], circularly polarized patches [57,58], and defected ground method [59,60].…”

Section: Bandwidth Enhancementmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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This paper presents novel low-cost single- and dual-band microstrip patch antennas. The proposed antennas are realized on a square microstrip patch etched symmetrically with four slots. The antenna is designed to have low cost and reduced size to use in Internet of things (IoT) applications. The antennas provide a reconfigurable architecture that allows operation in different wireless communication bands. The proposed structure can be adjusted to operate either in single band or in dual-band operation. Two prototypes are implemented and evaluated. The first structure works at a single resonance frequency (f1 = 2.4 GHz); however, the second configuration works at two resonance frequencies (f1 = 2.4 GHz and f2 = 2.8 GHz) within the same size. These antennas use a low-cost FR-4 dielectric substrate. The 2.4 GHz is allotted for the industrial, scientific, and medical (ISM) band, and the 2.8 GHz is allocated to verify the concept and can be adjusted to meet the user’s requirements. The measurement of the fabricated antennas closely matches the simulated results.

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Section: Bandwidth Enhancementmentioning

confidence: 99%

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

et al. 2021

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“…Moreover, taking into account the low cost, fabrication easiness, and reduced footprint, it is not surprising to guess that they have a huge impact on military and commercial applications. Since their discovery, LP antennas have been the subject of detailed theoretical and experimental studies [ 41 , 42 ]. Several planar LP antennas were proposed in literature.…”

Section: Uwb Antennasmentioning

confidence: 99%

Sinuous Antenna for UWB Radar Applications

Mescia

Mevoli

Lamacchia³

et al. 2021

Sensors

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In this paper, the recent progress on sinuous antennas is detailed, focusing the attention on the antenna geometry, dielectric structure, and miniaturization techniques. In the first part, we introduce the basic principles of the frequency-independent antenna, in particular the self-complementary and log-periodic geometries, as well as the antenna geometries, all characterized in terms of angles. The operating principles, main advantages, system design considerations, limits, and challenges of conventional sinuous antennas are illustrated. Second, we describe some technical solutions aimed to ensure the optimal trade-off between antenna size and radiation behavior. To this aim, some special modification of the antenna geometry based on the meandering as well as on the loading with dielectric structures are presented. Moreover, the cavity backing technique is explained in detail as a method to achieve unidirectional radiation. Third, we present a new class of supershaped sinuous antenna based on a suitable merge of the 2D superformula and the sinuous curve. The effect of the free parameters change on the antenna arm geometry as well as the performance improvement in terms of directivity, beam stability, beam angle, gain, and radiating efficiency are highlighted.

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“…Unlike the usual LPDAs, in this antenna the feeding connector has been connected near the shortest dipole obtaining a reflection coefficient always lower than -10 dB and a gain of about 4 dBi in the considered band. To reduce the antenna dimensions, widening the working band, all the dipoles were shaped like a bow-tie [14,15], while only the longest dipole was replaced with a triangular shaped dipole in [16]. In any case, due to the different resonant processes taking place in the different dipoles that make up a log-periodic antenna, the ringing level is not compatible with time-domain pulsed applications.…”

Section: Introductionmentioning

confidence: 99%

An Antipodal Vivaldi Antenna for a Drone-mounted Ground Probing Radar

Pisa,

Pastori,

Cicchetti

et al. 2024

PIER M

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An antenna operating between 300 MHz and 700 MHz, designed to be used on a ground penetrating radar installed on an Unmanned Aerial Vehicle (UAV) for the exploration and characterization of the buried ice deposits on Mars, is presented. To this end, a lightweight, high-gain Vivaldi antenna having compact dimensions and high operating bandwidth has been taken into consideration. This antenna, equipped with circular-loaded rectangular slots etched on its radiating arms, exhibits improved performance in terms of size, return loss, gain, and fidelity factor with respect to a conventional antipodal Vivaldi antenna. Experimental measurements performed on a prototype of the Vivaldi antenna with slots showed a return loss lower than −12 dB with realized gains between 4 dBi and 6.5 dBi in the 300-700 MHz frequency band.

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Design and Optimization of Compact Printed Log-Periodic Dipole Array Antennas with Extended Low-Frequency Response

Cited by 14 publications

References 52 publications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Design of Low-Profile Single- and Dual-Band Antennas for IoT Applications

Sinuous Antenna for UWB Radar Applications

An Antipodal Vivaldi Antenna for a Drone-mounted Ground Probing Radar

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