Pattern reconfigurable antenna with four directions hidden in the vehicle roof

Artner, Gerald; Kowalewski, Jerzy; Mecklenbräuker, Christoph F.; Zwick, Thomas

doi:10.1109/iwat.2017.7915323

Cited by 10 publications

(9 citation statements)

References 22 publications

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“…Conformal antenna modules at the front of the roof [29], [30] were shown to increase coverage towards vulnerable road users [31] and they leave room to include optical cameras for automated driving cars. Pattern reconfigurable antennas in a chassis antenna cavity were prototyped in [32] and [33]. Smaller versions of such cavities have been used to flush-mount antennas on racing cars [34].…”

Section: Introductionmentioning

confidence: 99%

Automotive Antenna Roof for Cooperative Connected Driving

et al. 2019

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An automotive concept for vehicular communications is proposed that utilizes the potential of the roof area for antennas. Antennas are distributed in cavities and on shelves in the center and on the front and rear roof ends. The arrangement of antennas on the roof allows better radiation to the front and back of automobiles than shark-fins and single cavities. Combining several modules provides space for further antennas, sensors, and integrated front-ends, as well as better spatial separation for multiple-input multiple-output (MIMO) arrays beyond 5G, and cooperative connected and automated driving. A prototype was developed and built into a car chassis. The measured data were analyzed and evaluated in the view of coverage for vulnerable road users and on correlation for the MIMO.

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Section: Introductionmentioning

confidence: 99%

Automotive Antenna Roof for Cooperative Connected Driving

et al. 2019

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“…Such as literature, the proposed antennas could not achieve a 360‐degree scanning in a particular plane. And among, these types of pattern reconfigurable antennas could only steer its’ radiation patterns in azimuth plane by a fixed spacing of steering angle and are incapable of adjusting their main beam directions within a small range.…”

Section: Introductionmentioning

confidence: 99%

A new pattern‐reconfigurable antenna with the function of 360° wide‐beam scanning and main beam direction finely‐adjustable

Xue

Zhai

Yang

et al. 2018

Micro & Optical Tech Letters

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A new pattern‐reconfigurable antenna with the function of 360° wide‐beam scanning and main beam direction finely‐adjustable is proposed in this letter. The antenna consists of a central feeding disc which surrounded by four snowflake radiators on the top layer of the FR4 substrate. PIN diodes are placed between the disc and each snowflake patch for realizing the wide‐angle beam steering of the antenna. By controlling the four PIN diodes on the top layer, main beam can be switched in four directions with about 90° steps in the H‐plane (17°, 106°, 197°, and 287°).The bottom layer of the substrate includes a ground plane with eight rectangular ring slots. Eight PIN diodes installed on each slot are used to further control the beam direction of the antenna. By controlling the states of the PIN diodes on the bottom layer, the main beam of the proposed antenna is capable to deflect rightward or leftward about 10° on the basis of the original four states. The simulated and measured results show that the antenna operates well at 3.64–3.88 GHz under 12 states and achieves good performance with flexible pattern reconfigurability in 12 directions. The proposed antenna could be applied in 5G wireless communication systems.

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“…Therefore, there is a growing interest in developing hidden antenna solutions to replace the visible shark fin antennas [6]- [10]. Low et al [6] studied the use of a cavity on the car roof for hidden antenna solutions.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the lowprofile LTE/GPS/satellite radio multiband antenna proposed in [7] has the height of 0.056 wavelength, at the lowest band of 830 MHz. Further studies have been done for narrowband [8], wideband [8], [9] and pattern reconfigurable [10] antennas within 0.7-6 GHz using the roof cavity concept.…”

Section: Introductionmentioning

confidence: 99%

On Performance of Hidden Car Roof Antennas

Yousaf

Lau²

2018

12th European Conference on Antennas and Propagation (EuCAP 2018)

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Hidden antenna solutions for car roofs are of current interest to car manufacturers, to avoid having larger shark-fin based antenna systems to support growing number of wireless services. However, there are only a few studies in the literature on the integration of hidden antennas, particularly in relation to realistic roofs and propagation channels. This paper investigates the performance impact of hiding car roof-top antennas in roof cavities for an outdoor channel defined by an angular power spectrum. Different 700 MHz antenna concepts and roof cavity locations are considered for an idealized flat roof as well as a real curved roof. The results reveal that hiding antennas in cavities result in a minor mean effective gain (MEG) penalty of up to 1 dB, for a flat rectangular car roof. However, a realistic roof curvature can largely offset the MEG loss. Moreover, different monopole-based antenna concepts can provide MEG variations of up to nearly 3 dB, indicating that significant performance gain can be achieved through an optimized design.

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Pattern reconfigurable antenna with four directions hidden in the vehicle roof

Cited by 10 publications

References 22 publications

Automotive Antenna Roof for Cooperative Connected Driving

Automotive Antenna Roof for Cooperative Connected Driving

A new pattern‐reconfigurable antenna with the function of 360° wide‐beam scanning and main beam direction finely‐adjustable

On Performance of Hidden Car Roof Antennas

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