Miniaturization of log-periodic dipole array antenna using triangular meander structure

Lee, Jae-Min; Ham, Hyung-Jun; Ryu, Hong-Kyun; Woo, Jong‐Myung; Park, Beomjun; Lee, Kyu-Song

doi:10.1109/icwits.2012.6417826

Cited by 17 publications

(8 citation statements)

References 4 publications

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“…For the LPMDA, within the operating frequency band, the measured realized gains in the direction of the main beam range from 2.78 to 7.64 dBi (see Figure 3c). A comparison of some key features is conducted between the presented LPMDA antenna and other miniaturized log-periodic array antennas described in the literature [7,9,10,11], as shown in Table 2. Clearly, the LPMDA antenna presented here has a much wider ratio bandwidth and a higher gain, although it occupies a slightly larger space.…”

Section: Antenna Design and Experimental Resultsmentioning

confidence: 99%

“…Therefore, the size of an LPDA antenna should be minimized to make it more applicable to various communication applications in which the mandated space for an antenna is restricted. For miniaturization of an LPDA antenna, several techniques have been introduced [6,7,8,9,10,11]. In one study [6], a Koch-fractal configuration was implemented in an LPDA antenna, resulting in a size reduction of 18% as compared to a conventional LPDA antenna.…”

Section: Introductionmentioning

confidence: 99%

“…In other studies, a compact dielectric-loaded LPDA antenna [8] and a T-shaped top-loaded LPDA antenna [9] were introduced, achieving length reductions of 44% and 45%, respectively. Miniaturization using meandered dipole elements was also investigated to reduce the sizes of LPDA antennas [10,11].…”

Section: Introductionmentioning

confidence: 99%

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A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure

Trinh-Van

Kwon

Jung

et al. 2019

Sensors

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This paper presents a low-profile log-periodic meandered dipole array (LPMDA) antenna with wideband and high gain characteristics. The antenna consists of 14 dipole elements. For compactness, a meander line structure is applied to each dipole element to reduce its physical length. As a result, a compact and wideband LPMDA antenna is realized, exhibiting a wide impedance bandwidth of 1.04–5.22 GHz (ratio bandwidth of 5.02:1) for |S11| < −10 dB. To enhance the antenna gain performance while maintaining the wideband behavior, the LPMDA antenna is integrated with a new design of an artificial magnetic conductor (AMC) structure. The designed AMC is realized by combining three AMC structures of different sizes to form a cascaded multi-section AMC structure, of which its overall operating bandwidth can continuously cover the entire impedance bandwidth of the LPMDA antenna. The proposed AMC-backed LPMDA antenna is experimentally verified and its measured −10 dB reflection bandwidth is found to be in the range of 0.84–5.15 GHz (6.13:1). At the main beam direction within the operating frequency bandwidth, the gain of the proposed AMC-backed LPMDA antenna ranges from 7.15–11.43 dBi, which is approximately 4 dBi higher than that of an LPMDA antenna without an AMC. Moreover, the proposed antenna has a low profile of only 0.138λL. (λL is the free-space wavelength at the lowest operating frequency).

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Section: Antenna Design and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure

Trinh-Van

Kwon

Jung

et al. 2019

Sensors

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“…Antenna size is one of the problems in log‐periodic dipole array (LPDA). Because a combination of multiple λ/2‐dipole elements used in LPDA are not feasible when the space required for the antenna is limited and it also provides low gain …”

Section: Introductionmentioning

confidence: 99%

“…Because a combination of multiple λ/2-dipole elements used in LPDA are not feasible when the space required for the antenna is limited and it also provides low gain. 14 The size reduction of LPDAs is desired to make them more applicable in various communications. Ridged-waveguide technique reduces the lengths of the four longest elements in the LPDA.…”

mentioning

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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A miniaturized three‐dimensional log periodic Koch‐dipole array antenna using T‐shaped top loading

Xiong

Zhang

2021

Int J RF Microw Comput Aided Eng

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A log periodic dipole array antenna (LPDA) is miniaturized by using top loading. The Koch dipole further helps to shrink the antenna size. Different from the traditional LPDA that features a planar structure, the proposed log periodic Koch-dipole array (LPKDA) adopts two identical pairs of top-loaded Kochdipoles that deploy orthogonally along the feed line. This results in a tree-like three-dimensional antenna geometry, which introduces one extra dimension of freedom for antenna designers. The influence of the top-loading on antenna's impedance bandwidth is studied under the Wheeler and Chu's limit. The characteristic of the Koch-dipole is analyzed. Taking the advantage of 3D printing technology to fabricate complex models, the proposed LPKDA is printed by selective laser melting using aluminum alloy. The simulated −10-dB bandwidth is 117.4% (0.91-3.54 GHz) The LPKDA has the average gain of 5.3 dBi over the 1 to 3.5 GHz impedance bandwidth in measurement. Radiation patterns agree well in simulation and measurement. Compared with conventional LPDA of the same impedance bandwidth, the proposed LPKDA features 42%-dimensional reduction. This letter proves the feasibility of antenna optimization by using both innovative design method and advanced fabrication process.

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Miniaturization of log-periodic dipole array antenna using triangular meander structure

Cited by 17 publications

References 4 publications

A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure

A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure

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

A miniaturized three‐dimensional log periodic Koch‐dipole array antenna using T‐shaped top loading

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