Antennas for Mobile Communications

Fujimoto, K.

doi:10.1002/9780470294154.ch23

Cited by 11 publications

(7 citation statements)

References 9 publications

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“…Moreover, in the case of a dual-polarization radiator with two pairs of feeds employed, the mutual coupling of each pair of feed is reduced, which results in higher isolation between antenna ports [2]. These characteristics are relevant for a radiator employed as the array element in a sector antenna for mobile communication systems, since these systems usually employ polarization diversity [5].…”

Section: Introductionmentioning

confidence: 99%

An Efficient Technique for Design of Electrically Thick Differentially-Driven Probe-Fed Microstrip Antennas

Paula¹,

Nascimento²,

Bianchi³

2014

PIER M

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Abstract-This paper presents a computationally efficient technique for designing electrically thick differentially-driven rectangular microstrip antennas with coaxial probe feed. It concerns the use of a transmission line model for probe positioning, along with a full-wave field simulator that yields accurate results with reduced number of required full-wave simulations. An electrically thick antenna was designed with the proposed technique to operate at 2442 MHz, having its radiation patterns and input impedance measured and compared against a single-feed rectangular microstrip antenna to demonstrate the advantages of using differential feed to reduce cross-polarization in H-plane.

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Section: Introductionmentioning

confidence: 99%

An Efficient Technique for Design of Electrically Thick Differentially-Driven Probe-Fed Microstrip Antennas

Paula¹,

Nascimento²,

Bianchi³

2014

PIER M

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“…There are various techniques or technologies of fabrication of electromagnetic structure in general, and each one of them has specific interest and can be used for given application [3]. For instance, dielectric antennas resonators, known as DRA, are generally used to generate specific harmonics and propagation mode, on the top surface of the antenna, where various types of dielectrics are used [4]. The substrateintegrated waveguide (SIW) is a type of antenna where a waveguide is built on the top of the substrate, and the main advantages of these antenna are lower losses and better power handling [4,5].…”

Section: Introductionmentioning

confidence: 99%

Metamaterial Applications in Modern Antennas

Lashab,

Belattar,

Hocine

et al. 2023

Metamaterials - History, Current State, Applications, and Perspectives

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The chapter presents different types of metamaterials, their historical evolution, physical properties, and applications in antennas design. Metamaterials are artificial structures that offer electric and magnetic properties that are not found in nature, such are negative permittivity and negative permeability. These properties are used in antennas design in order to obtain ultrawide bandwidth, high gain, and electrically small structures. Modern wireless mobile communication uses 5G technology and multi-input multi-output (MIMO) antennas, which are based on high-frequency transmission and ultrawide band. Metamaterials are very good candidate for this technology, where miniaturized antennas loaded with metamaterials structures are used. Recently, electromagnetic sensors were used for liquid identification in biological and medical substances based on metamaterials for the sake of high sensitivity and better classification. Different metamaterial types are used in these sensors, depending on the nature of liquid and the associated application.

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“…This is hard to maintain over a wide frequency range and is a challenge for the antenna designers. Therefore, a wideband directional antenna with wide beamwidth and wide angle AR can find applications in satellite communications and especially, GPS receiver application .…”

Section: Introductionmentioning

confidence: 99%