Small-Size LTE/WWAN Two-Strip Monopole Exciter Antenna Integration With Metal Covers

Chen, Shu‐Chuan; Tsou, Yu-Chuan

doi:10.1109/tap.2016.2571784

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…On the basis of the idea of the hinge antenna of notebook computers, the feed technique of this proposed antenna was to use two coupled monopole antennas to excite the closed slots located between two hinges. (13,14) These two coupled monopole feed antennas excited the slots and generated the magnetic dipole, which combines with the electric dipole generated by the inverted-L dipole antenna. Two similar beam widths can be obtained for YZ and XZ planes, and they can cover the modern C-band (5G) of 3.3−3.8 GHz.…”

Section: Introductionmentioning

confidence: 99%

Multi-input Multi-output Magnetoelectric Dipole Antennas Comprising Dual Monopole Feed Antennas for Energy Harvesting

Chen¹,

Cheng²,

Zhang³

2019

Sensors and Materials

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A three-dimensional (3-D) inverted-L multi-input multi-output (MIMO) magnetoelectric dipole antenna comprising two coupled monopole feed antennas is developed for energyharvesting applications. Additionally, the electromagnetic band-gap (EBG) structure was used to improve the isolation (S 21 ) of the antennas. The bandwidth of the proposed antenna is up to 42.1% for 3-4.6 GHz, which covers the C-band (5G) applications of 3.3-3.8 GHz. The advantages of the proposed antenna are the following: low cross-polarization; good radiation patterns; stable and high gains (9.55 ± 0.35 dBi) in the operating band; all simulated and measured return loss of the antennas (S 11 and S 22 ) are below −10 dB; and the isolation between two antennas is below −15 dB. Finally, the proposed antenna is suitable for modern energyharvesting and 5G wireless sensor network systems.

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Section: Introductionmentioning

confidence: 99%

Multi-input Multi-output Magnetoelectric Dipole Antennas Comprising Dual Monopole Feed Antennas for Energy Harvesting

Chen¹,

Cheng²,

Zhang³

2019

Sensors and Materials

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“…Moreover, the desired ratios of the high modal frequencies to the low ones in [11] and [12] were achieved by implementing meandered slots, which in terms of aesthetic perception are less preferred than simple straight slots. In order to satisfy consumers' demand for narrow-bezel (or narrow-edge-frame) and metal-textured mobile communication devices, some recently introduced antennas have been configured in the hinge slot region of a laptop computer so that the laptop computer can have a large screen with a full metal cover [15], [16]. Currently, in the design of an LTE MIMO antenna system for laptop computers (refer to Table 1 for comparison), a resonator in LTE700 and LTE2300/2500 band is used to reduce the mutual coupling between two adjacent antennas [17], and a T-type isolation element is used to trap the ground-plane surface current between the main and auxiliary antennas so that the mutual coupling can be reduced [18].…”

mentioning

confidence: 99%

LTE MIMO Closed Slot Antenna System for Laptops With a Metal Cover

Chen

Hsu

2019

IEEE Access

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This paper presents an LTE MIMO closed slot antenna system for laptops with a metal cover. Its main and auxiliary antennas have the same structure that measures 130 × 3 mm 2. They are configured in a manner of reflection symmetry on the display metallic ground plane and are 5 mm away from the hinge. The distance between the two antennas is 20 mm, and the profile height of the MIMO antenna system is only 3 mm. This LTE closed slot antenna is excited by an exciter of 30 × 3 mm 2 to cover the LTE eight-band operation (LTE700/GSM850/900/1800/1900/UMTS/LTE2300/2500). The exciter is a simple planar inverted-F antenna (PIFA) structure loaded with reactive matching elements, which can enhance the impedance matching in the desired frequency bands. This LTE MIMO closed slot antenna system has good isolation of at least 16 dB without adding any additional isolation elements. The measured antenna efficiency of the MIMO antenna system is larger than 40% in the low-frequency band and 50% in the high-frequency band, meeting the practical application requirements. INDEX TERMS Laptop antennas, closed slot antennas, LTE MIMO antennas, ECC (envelope correlation coefficient). I. INTRODUCTION With the popularity of the fourth-generation (4G) mobile communication long-term evolution (LTE) technology and the demand for fast wireless transmission rates, multipleinput multiple-output (MIMO) systems have been widely used in many mobile communication devices to respond to today's massive data transmission. In addition, thin portable smart phones, tablets, or laptops with a fashionable appearance of a metal cover and a high screen-to-body ratio are a trend-setting mobile communication device. However, the large screen-to-body ratio, metal back cover, and slim appearance restrict the space allowed for antenna design. On the basis of the above conditions, it is a serious challenge for antenna researchers to configure in an internal-space-limited metal-cover mobile communication device an LTE MIMO antenna system with high isolation. High transmission speed, light weight, thin appearance, and fashionable metal texture of the cover are the features that most consumers require nowadays when choosing mobile The associate editor coordinating the review of this manuscript and approving it for publication was Mohammad Tariqul Islam.

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Multiband Laptop Antenna with Enhanced Bandwidth for WLAN/WiMAX/GPS Wireless Applications

et al. 2022

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Small-Size LTE/WWAN Two-Strip Monopole Exciter Antenna Integration With Metal Covers

Cited by 10 publications

References 19 publications

Multi-input Multi-output Magnetoelectric Dipole Antennas Comprising Dual Monopole Feed Antennas for Energy Harvesting

Multi-input Multi-output Magnetoelectric Dipole Antennas Comprising Dual Monopole Feed Antennas for Energy Harvesting

LTE MIMO Closed Slot Antenna System for Laptops With a Metal Cover

Multiband Laptop Antenna with Enhanced Bandwidth for WLAN/WiMAX/GPS Wireless Applications

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