A roof automobile module for LTE-MIMO antennas

Guan, Ning; Tayama, Hiroiku; Ueyama, Masaki; Yoshijima, Yasutaka; Chiba, Hiroshi

doi:10.1109/apwc.2015.7300160

Cited by 26 publications

(15 citation statements)

References 6 publications

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“…Among the various types of vehicular antennas, a shark-fin antenna module has been the most commonly used. Shark-fin antenna modules providing multiple services, such as global positioning system (GPS), wireless local area network (WLAN), satellite digital audio radio system (SDARS), multiple-input and multiple-output (MIMO) LTE, satellite navigation, and wireless access in the vehicular environment (WAVE) have been reported recently [1][2][3]. However, shark-fin antennas have significant drawbacks in both the aesthetic point of view and in technical aspects (isolation, correlation, and radiation pattern, etc.)…”

Section: Introductionmentioning

confidence: 99%

Planar LTE/sub‐6 GHz 5G MIMO antenna integrated with mmWave 5G beamforming phased array antennas for V2X applications

Lee

Choi

2020

IET Microwaves, Antennas & Propagation

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A planar LTE/sub‐6 GHz 5G multiple‐input and multiple‐output (MIMO) antenna integrated with mmWave 5G beamforming phased array antennas for future vehicle‐to‐everything (V2X) applications is proposed. The proposed antenna consists of two multi‐band elements for LTE and sub‐6 GHz 5G bands, two single‐band elements for the sub‐6 GHz 5G band, and four mmWave 5G beamforming phased array antennas. Two compact multi‐band antennas are located on the opposite side of the ground plane and are arranged orthogonally to each other. Four mmWave 5G beamforming phased array antennas are located at the four sides of the ground plane for 360° coverage in the azimuth plane. All antennas are optimised for loading with a polycarbonate dielectric housing. The proposed antenna satisfies the −10 dB reflection coefficient (S11) requirement from 0.84 to 0.96 GHz, 1.22 to 2.04 GHz, 2.42 to 4.62 GHz, 25.1 to 31.4 GHz, and 33 to 34.8 GHz. A high isolation level of >20 dB is achieved. The realised gains of the low band antennas are higher than 2.51 dBi, while those of the mmWave 5G array antennas are higher than 15.6 and 11.3 dBi at 0° and 45° scan angles, respectively.

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Section: Introductionmentioning

confidence: 99%

Planar LTE/sub‐6 GHz 5G MIMO antenna integrated with mmWave 5G beamforming phased array antennas for V2X applications

Lee

Choi

2020

IET Microwaves, Antennas & Propagation

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“…However, they exhibit several disadvantages such as large dimensions, high complexity, and high cost [6][7][8]. The same disadvantages are also encountered in a few proposed MIMO antenna systems that are embedded in a shark-fin structure [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

An Integrated Shark-Fin Reconfigurable Antenna for V2x Communications

Rongas¹,

Paraskevopoulos²,

Marantis³

et al. 2020

PIER C

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This paper focuses on the design, development, and integration of a V2X shark-fin antenna. A novel planar Electronically Switched Parasitic Array Radiator (ESPAR) antenna, operating at 5.9 GHz, is proposed. The antenna exhibits pattern reconfigurability, i.e., one quasi-omni and two directive beams, low cost, reduced complexity, and small dimensions. Therefore, it is considered as an ideal candidate for integrating inside a shark-fin casing. The ESPAR antenna prototype is fabricated and tested in three different measurement scenarios: (a) free-space, (b) inside shark-fin, and (c) shark-fin with ground plane. A good correlation between simulated and experimental results has been obtained. The proposed antenna involves a reconfigurable impedance matching network that is integrated in the antenna design, and thus, it demonstrates a satisfactory impedance matching for all antenna states. A considerable gain enhancement (3-4 dB) is also recorded between the omnidirectional and two directive patterns.

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“…On the other hand, miniaturization techniques are required to integrate antennas for low-frequency applications (below 1GHz) [5]. Such issues are recently discussed in the design of antennas for LTE700 applications, especially in the automotive field [6]- [14]. The design of antennas able to fulfill the application requirements in terms of gain and impedance matching in the entire LTE700 band is quite demanding.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, a tapered profile of the feeding network and a thin slot have been introduced for a fine tuning of the input impedance matching at higher frequencies. Thanks to its compact size (25×76×1.53 mm 3 ), the antenna is a good candidate for mobile applications, especially in the automotive industry, and it may be also used for [14].…”

Section: Introductionmentioning

confidence: 99%

Printed Wideband Antenna for LTE-Band Automotive Applications

Michel

Nepa

Gallo

et al. 2017

Antennas Wirel. Propag. Lett.

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A low-profile printed antenna is here proposed for vehicular communications, covering wireless standards in a wide frequency range (698-2690 MHz) that includes the LTE (Long Term Evolution) band. Multiple monopole antennas are printed on the same compact substrate easily embeddable under a shark-fin cover, and they are properly optimized to resonate in the considered frequency band. A tapered profile and a thin slot have been introduced to achieve a good impedance matching, especially at the higher frequencies. Numerical simulations and measurement results on a prototype are here reported in terms of reflection coefficient, gain and radiation pattern. The proposed wideband antenna is suitable for other wireless scenarios in addition to the automotive industry.

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A roof automobile module for LTE-MIMO antennas

Cited by 26 publications

References 6 publications

Planar LTE/sub‐6 GHz 5G MIMO antenna integrated with mmWave 5G beamforming phased array antennas for V2X applications

Planar LTE/sub‐6 GHz 5G MIMO antenna integrated with mmWave 5G beamforming phased array antennas for V2X applications

An Integrated Shark-Fin Reconfigurable Antenna for V2x Communications

Printed Wideband Antenna for LTE-Band Automotive Applications

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