Small artificial magnetic conductor backed log‐periodic microstrip patch antenna

Almutawa, Ahmad T.; Mumcu, Gökhan

doi:10.1049/iet-map.2013.0028

Cited by 20 publications

(14 citation statements)

References 26 publications

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“…Artificial magnetic conductor (AMC) surface-based low-profile antenna also achieved a narrow bandwidth with a two-dimensional array. AMC shows in-phase reflection characteristics in a particular frequency spectrum, which expands its applicability as a reflector antenna [19][20][21][22]. Earlier than these stated articles, metamaterial resonators of various shapes were used for low-profile dipole antennas.…”

Section: Introductionmentioning

confidence: 99%

Low-Profile Slotted Metamaterial Antenna Based on Bi Slot Microstrip Patch for 5G Application

Hoque

Islam

Almutairi

2020

Sensors

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A low-profile high-directivity, and double-negative (DNG) metamaterial-loaded antenna with a slotted patch is proposed for the 5G application. The radiated slotted arm as a V shape has been extended to provide a low-profile feature with a two-isometric view square patch structure, which accelerates the electromagnetic (EM) resonance. Besides, the tapered patch with two vertically split parabolic horns and the unit cell metamaterial expedite achieve more directive radiation. Two adjacent splits with meta units enhance the surface current to modify the actual electric current, which is induced by a substrate-isolated EM field. As a result, the slotted antenna shows a 7.14 dBi realized gain with 80% radiation efficiency, which is quite significant. The operation bandwidth is 4.27–4.40 GHz, and characteristic impedance approximately remains the same (50 Ω) to give a VSWR (voltage Standing wave ratio) of less than 2, which is ideal for the expected application field. The overall size of the antenna is 60 × 40 × 1.52 mm. Hence, it has potential for future 5G applications, like Internet of Things (IoT), healthcare systems, smart homes, etc.

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Section: Introductionmentioning

confidence: 99%

Low-Profile Slotted Metamaterial Antenna Based on Bi Slot Microstrip Patch for 5G Application

Hoque

Islam

Almutairi

2020

Sensors

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“…However, this antenna structure is somewhat complicated, requiring a very precise process to implement vertical monopoles of different heights onto the feeding network. In another work [17], a low-profile log-periodic microstrip patch antenna backed with an artificial magnetic conductor (AMC) surface was reported, achieving a narrow ratio bandwidth of only 1.51:1. The AMC surface is a periodic structure consisting of a two-dimensional array of tightly coupled unit cells of square metallic patches [18].…”

Section: Introductionmentioning

confidence: 99%

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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“…Artificial magnetic conductor (AMC) [3][4][5][6], one of the electromagnetic metamaterials, has become a hot topic in engineering and science field because of its appealing inphase reflection characteristic and application. In general, the perfect electric conductor (PEC) is placed under the conventional antenna for gain enhancement [7], but the distance between PEC surface and antenna should maintain at least 1/4λ. It is difficult to achieve low-profile and gain enhancement at the same time.…”

Section: Introductionmentioning

confidence: 99%

Gain‐enhanced antenna backed with the fractal artificial magnetic conductor

Zhang

Yao

Duan

2018

IET Microwaves, Antennas & Propagation

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The authors proposed a unidirectional, high‐gain antenna loaded with the artificial magnetic conductor (AMC) back‐cavity, which generates the reflection phase of 0° for gain enhancement in a low profile. The working bandwidth of the AMC unit cell is extended to 5.1–7.4 GHz (36.5%) by applying the fractal technology. The radiation performance improvement, wider bandwidth and increased gain are obtained for the composite antenna mounted on the fractal AMC reflector with the distance of 2 mm (0.04 wavelength at the central frequency of 6 GHz). The simulated results indicated that the operational bandwidth of the proposed antenna ranges from 4.7 to 8 GHz (52.0%). Besides, an average gain enhancement of 4 dB as compared to the original antenna without AMC back‐cavity is achieved over the entire operating band. In addition, the proposed antenna is manufactured and tested, the measured results coincide well with the simulated counterparts.

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Small artificial magnetic conductor backed log‐periodic microstrip patch antenna

Cited by 20 publications

References 26 publications

Low-Profile Slotted Metamaterial Antenna Based on Bi Slot Microstrip Patch for 5G Application

Low-Profile Slotted Metamaterial Antenna Based on Bi Slot Microstrip Patch for 5G Application

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

Gain‐enhanced antenna backed with the fractal artificial magnetic conductor

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