A Novel Printed Fractal Log-Periodic Dipole Antenna

Qiu, Jinghui; Lin, Sanbao; Yang, Caitian; You, Qidi

doi:10.1109/memia.2005.247508

Cited by 20 publications

(9 citation statements)

References 2 publications

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“…It means that this antenna can achieve a lateral size reduction to 61% of the normal log-periodic antenna [32]. This antenna is created by designing a printed log-periodic dipole arrays (PLPDA) on a substrate material.…”

Section: B Design Of the Fractal Tree Log-periodic Dipole Antennamentioning

confidence: 99%

“…Where: R n : Distance from the apex to the nth element D n : Space between elements L n : Length of the elements The authors of the papers [31] and [32] calculated the length of the first dipole length (L1=375 mm) of a logperiodic antenna to get a resonant frequency at 400 MHz based on equation (12). However, this only considers free space conditions and does not include the effect of the permittivity constant associated with the substrate material.…”

Section: B Design Of the Fractal Tree Log-periodic Dipole Antennamentioning

confidence: 99%

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Two planar antennas for detection of partial discharge in gas-insulated switchgear (GIS)

Lozano-Claros

Čustović

Elton

2015

2015 IEEE International Conference on Communication, Networks and Satellite (COMNESTAT)

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The detection of partial discharge in GIS plays a pivotal role in preventing and mitigating severe operational failure and damage in insulation elements. Partial discharge progressively degrades the insulating medium and, as a result electrical breakdown can occur in GIS. Despite various techniques used for PD detection, the RF analysis is extensively used because it is highly reliable, has good sensitivity and the largest bandwidth.The objective of this study is to examine two applicable planar antennas for detecting the RF energy of partial discharge in GIS infrastructure. Namely, a planar complex spiral antenna and a fractal tree log-periodic dipole antenna which are located on the GIS junction of segments.

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Section: B Design Of the Fractal Tree Log-periodic Dipole Antennamentioning

confidence: 99%

Section: B Design Of the Fractal Tree Log-periodic Dipole Antennamentioning

confidence: 99%

Two planar antennas for detection of partial discharge in gas-insulated switchgear (GIS)

Lozano-Claros

Čustović

Elton

2015

2015 IEEE International Conference on Communication, Networks and Satellite (COMNESTAT)

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“…Fractal structure has self‐similarity and space filling characteristics which could realize the miniaturized antenna design. In antenna's design, the usual fractal structure is koch fractal, tree fractal, hilbert fractal and so on. So the researchers introduced many fractal antenna shapes for wireless applications.…”

Section: Introductionmentioning

confidence: 99%

Compact printed log-periodic dipole antenna for terrestrial digital video broadcast application

Elsheakh

Abdallah

2014

Microw. Opt. Technol. Lett.

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A compact six pairs of printed log‐periodic fractal dipole antenna (FLPDA) is proposed in this article for wireless applications. These applications are terrestrial digital video broadcast‐T band (470–862 MHz), 3.5WiMAX band (3300–3800 MHz), and the WLAN (wireless local area network) IEEE 802.11b, g frequency bands. The impedance bandwidth (|S11| < −6 dB) of the proposed antenna is extended from 0.5 to 10 GHz with an average gain of 5.5 dBi. The fractal LPD antenna is simulated and designed with the software high frequency structure simulator. Both numerical and experimental results show that the FLPDA antenna has stable directional radiation patterns and apparently miniaturized effect, which are suitable for various ultrawideband applications. The results show that the antenna achieves the necessary lateral size reduction of 45% of the normal log‐periodic antenna while keeping its radiation characteristics nearly constant. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1002–1007, 2014

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“…Second, circular polarization can be generated with geometrical perturbations, such as slots, slits, spur lines, truncated corners, cuts, and tuning stubs [4]. In literatures [5,6], the CP design is achieved by inserting a pair of slits or by adding two orthogonal strips at the inner boundary of the annular-ring patch. As far as single-fed CP antennas are concerned, single-fed CP antennas have advantages of simple structure and easy to fabricate than dual-fed ones.…”

Section: Introductionmentioning

confidence: 99%

Compact printed log‐periodic dipole antenna for water detection by using ground penetrating radar

Elsheakh

Abdallah

2014

Micro & Optical Tech Letters

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Compact printed fractal log-periodic dipole antenna (FLPDA) is proposed for water detection using ground penetrating radar (GPR). First fractal structure is introduced in an antenna design and evolves the traditional Euclidean log-periodic dipole array (LPDA). A fabricated proof-of-concept prototype of the proposed antenna is printed on a FR4 substrate with a relative permittivity of 4.7 on both substrate thickness 1.6 and 9.5 mm with occupied area of 85 3 110 and 60 3 70 cm 2 , respectively. The fabricated antenna has approximately 75% size reduction as compared to traditional LPDA. The 210dB impedance bandwidth extends from 45 MHz to more than 500 MHz. Both numerical and experimental results show that the FLPDA antenna has stable directional radiation patterns and apparently miniaturized effect, which are suitable for various ultrawideband applications. Main parameters and characteristics of the proposed antenna are discussed using both electromagnetic simulation and measurement. The effect of sandy soil, water layer, and the distance between sand and proposed antennas are also studied. Figure 11 Radiation pattern for thin substrate (solid line Eh, and dash line EA) at 50 MHz (a) XZ-plane, (b) XY-plane and at 500 MHz, (c) XZ-plane, and (d) XY-plane, respectively

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A Novel Printed Fractal Log-Periodic Dipole Antenna

Cited by 20 publications

References 2 publications

Two planar antennas for detection of partial discharge in gas-insulated switchgear (GIS)

Two planar antennas for detection of partial discharge in gas-insulated switchgear (GIS)

Compact printed log-periodic dipole antenna for terrestrial digital video broadcast application

Compact printed log‐periodic dipole antenna for water detection by using ground penetrating radar

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