Reduced log-periodic dipole antenna using a cylindrical-hat cover

Jardón‐Aguilar, H.; Tirado‐Méndez, José Alfredo; Flores‐Leal, Ruben; Linares-Miranda, Roberto

doi:10.1049/iet-map.2011.0077

Cited by 41 publications

(21 citation statements)

References 11 publications

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“…In Ref. , 50% size reduction is achieved (with tradeoff of reduced gain) for antenna loaded with cylindrical hat cover filled with dielectric which operates over frequency range of 0.9–1.4 GHz with bandwidth of 500 MHz and gain of 6.4 dBi. Therefore, it can be inferred that the proposed antenna performs better than those described in Refs.…”

Section: Resultsmentioning

confidence: 99%

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Dielectric-loaded trapezoidal toothed log-periodic antenna

Patre

Singh

2016

Int. J. RF Microw. Comput. Aided Eng.

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In this article, dielectric‐loaded metal trapezoidal toothed log‐periodic antenna (TTLPA) is described. The dielectric material, Rogers RT/duroid 6010 (εr = 10.2, tan δ = 0.0023) of thickness = 5 mm and of same shape as TTLPA is placed on top of conventional metal TTLPA which provides enhanced bandwidth and/or miniaturizes its aperture size without degradation in gain. The dielectric loading increases the effective length of antenna, and therefore, extends its operating frequency towards lower frequency side which miniaturizes aperture cross‐section of antenna with slight increase in its thickness. The simulated input and radiation characteristics of TTLPA without and with dielectric loading are compared. The comparative studies show that the proposed antenna is 38.78% smaller in respect of aperture cross‐section as compared with conventional antenna having almost identical bandwidth of 8.6 GHz (2.2–10.8 GHz) and gain variation over the range 1.5–6.1 dBi. The proposed antenna of aperture size 48.9 × 48.9 mm2 provides −10 dB reflection coefficient bandwidth of 8.6 GHz (2.2–10.8 GHz) and gain variation in the range 1.3–5.7 dBi whereas the conventional antenna of same aperture size achieves somewhat reduced bandwidth of 7.6 GHz (3.2–10.8 GHz) and gain variation in the range 1.6–5.0 dBi over the operating frequency range.

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Section: Resultsmentioning

confidence: 99%

“…Another method for size reduction of LPAs is dielectric loading. The utilization of cylindrical hat cover filled with dielectric is a good technique for lateral size reduction of wire LPA . In Ref.…”

Section: Introductionmentioning

confidence: 99%

Dielectric-loaded trapezoidal toothed log-periodic antenna

Patre

Singh

2016

Int. J. RF Microw. Comput. Aided Eng.

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“…그리고 반복 적인 구조인 프랙탈 구조를 LPDA 안테나의 방사소자에 적용하여 소형화된 안테나가 연구되었다. 프랙탈 기반 LPDA 안테나는 프랙탈 칸토어 구조 [4] , 프랙탈 트리 구조 [5] , 프랙탈 Koch 커브 구조 [6] , Cylindrical-hat cover 구조 [7] 가 보고되었다. 이러한 안테나들은 주로 1～3 GHz 대역 의 이동통신 대역에서 설계되었으며, 51 …”

Section: ⅰ 서 론unclassified

A Study on Miniaturization of a Log-Periodic Dipole Array Antenna

Ham¹,

Ryu²,

Park³

et al. 2014

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, we studied miniaturization of LPDA(Log-Periodic Dipole Array) antenna used for VHF and UHF bands. To miniaturize the LPDA antenna, in this study, the radiation elements in a low frequency were changed into a triangular meander structure which has small current cancelation effect at feed part. For the triangular meander structure, an isosceles triangular and right triangular meander structures were proposed and the LPDA antennas were miniaturized by using the two meander structures. Also, the simulated and measured results were compared for the two miniaturized LPDA antennas. As a result, the isosceles triangular meander and right angle triangular meander structure applied LPDA antennas were reduced up to 60.5 % and 72.4 % compared a basic LPDA antenna, respectively. Consequently, we confirmed that the triangular meander structure is suitable for miniaturization of a LPDA antenna.

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“…To improve the gain and bandwidth of the antenna various techniques are used . In frequency independent (FI) antennas have constant far‐field and impedance properties over very wide bandwidths making them excellent choice for broad range of applications . The spiral, sinuous, and log‐periodic antenna (LP) configurations are the most commonly used FI antennas.…”

Section: Introductionmentioning

confidence: 99%

Low profile high gain circular SIW antenna for L and S band applications

Navamani¹,

Swaminathan²

2019

Micro & Optical Tech Letters

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In this article, a circular substrate integrated waveguide (CSIW) antenna is proposed. Conventional log‐periodic antenna offers unidirectional and bidirectional radiation patterns that are used in two‐way communications provide moderate gain. The proposed antenna has the advantages of high gain, compact size, low loss, easy to integrate the high frequency components, and it also operates at L band and S band frequencies. To improve the gain and radiation characteristics, circular SIW is introduced and integrated with log‐periodic antenna. The comparison between simulated and measured results shows that the proposed antenna used for wireless communications both in L (1‐2 GHz) and in S (2‐4 GHz) frequency bands. It provides the bandwidth of 9.1%, 10%, 21.6%, and 11.03% and also the realized gain of 6.62 dB, 15.8 dB, 3.9 dB, and 8.3 dB is obtained in 1.2 GHz, 1.6 GHz, 2.4 GHz, and 2.9 GHz, respectively.

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Reduced log-periodic dipole antenna using a cylindrical-hat cover

Cited by 41 publications

References 11 publications

Dielectric-loaded trapezoidal toothed log-periodic antenna

Dielectric-loaded trapezoidal toothed log-periodic antenna

A Study on Miniaturization of a Log-Periodic Dipole Array Antenna

Low profile high gain circular SIW antenna for L and S band applications

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