A transmission line circuit-oriented approach for miniaturization of a log-periodic dipole array (LPDA) antenna

Almalkawi, Mohammad; Cross, Lee W.; Alshamaileh, Khair

doi:10.1109/mwscas.2014.6908355

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…An interesting approach was suggested in [37], where instead of introducing reactive loading, the concept of a non-uniform transmission line (NTL) was introduced in order to miniaturize the conventional PLPDA. This was completed by the modulation of the impedance profile of straight dipole elements to a truncated Fourier series using optimized Fourier coefficients.…”

Section: Fractal-iterative Techniquementioning

confidence: 99%

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

Mistry¹,

Lazaridis

Zaharis

et al. 2021

Electronics

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This paper initially presents an overview of different miniaturization techniques used for size reduction of printed log-periodic dipole array (PLPDA) antennas, and then continues by presenting a design of a conventional PLPDA design that operates from 0.7–8 GHz and achieves a realized gain of around 5.5 dBi in most of its bandwidth. This antenna design is then used as a baseline model to implement a novel technique to extend the low-frequency response. This is completed by replacing the longest straight dipole with a triangular-shaped dipole and by optimizing the four longest dipoles of the antenna using the Trust Region Framework algorithm in CST. The improved antenna with extended low-frequency response operates from 0.4 GHz to 8 GHz with a slightly reduced gain at the lower frequencies.

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Section: Fractal-iterative Techniquementioning

confidence: 99%

“…The proposed PLPDA with truncated Fourier-series dipoles has an operating frequency range of 2-4 GHz and provides a peak gain of 7 dBi. Figure 6 shows the PLPDA design with modified dipoles achieved by optimizing Fourier coefficients [37].…”

Section: Fractal-iterative Techniquementioning

confidence: 99%

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

Mistry¹,

Lazaridis

Zaharis

et al. 2021

Electronics

View full text Add to dashboard Cite

show abstract

“…LPDAs have been miniaturised by the employment of various techniques such as the Koch fractal [13], the meander lines [14] and the non-uniform lines [15], which effectively increase the path lengths of surface currents.…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturised UWB log‐periodic end‐fire antenna using several fractals with WLAN band‐rejection

Oraizi

Amini

Mehr

2017

IET Microwaves, Antennas & Propagation

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Several microstrip log‐periodic antennas are introduced having square Koch, triangular Koch, tree and Giuseppe Peano fractals applied to the edges of their branches with substrate integrated waveguide feed system. The proposed antennas are designed for end‐fire radiation and ultra‐wideband (UWB) operation (3.1–10.6 GHz), which achieve a fidelity factor of better than 0.9 due to the low variation of their phase centres. These antennas are effectively miniaturised and are suitable for impulse radio‐UWB and medical imaging. To prevent interference with commercial bands of 5.8 and 8.3 GHz, two spiral slots are cut on the patch. Their frequency and time‐domain operations and also miniaturisation are compared with those in the available literature. A prototype model of an end‐fire log‐periodic microstrip antenna with the Giuseppe Peano fractal applied to the edges of truncated rhombic branches is fabricated and measured to evaluate and demonstrate its stated properties and specifications.

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Research on HF antenna blockage effects and their alleviation

Zhu

Guo

He³

2022

Journal of Electromagnetic Waves and Applications

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A transmission line circuit-oriented approach for miniaturization of a log-periodic dipole array (LPDA) antenna

Cited by 8 publications

References 7 publications

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

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

Design of miniaturised UWB log‐periodic end‐fire antenna using several fractals with WLAN band‐rejection

Research on HF antenna blockage effects and their alleviation

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