Extremely Low-Profile Tunable Multiport Handset Antenna

Luomaniemi, Rasmus; Lehtovuori, Anu; Ilvonen, Janne; Khripkov, Alexander; Viikari, Ville

doi:10.1109/tap.2021.3111320

Cited by 10 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…24), which is not an access-restricted space inside the research laboratory. The fabricated module array is used as 16 Rx antennas (see Fig. 24) in the 16 x 8 MIMO system testing.…”

Section: X 8 Mimo System Testing Using the 16-port Module Array As 16...mentioning

confidence: 99%

Low-Profile Compact 8-Port MIMO Antenna Module and Its 1 × 2 Array for 6G 16 × 8 Device MIMO Application

Wong,

Hong,

Tseng

et al. 2023

IEEE Access

View full text Add to dashboard Cite

A low-profile compact 8-port MIMO (8PM) antenna module based on using four modified dual-polarized patch antennas is presented for six-generation (6G) mobile device MIMO featuring 8 spatial streams. The 8PM antenna module can provide 8 uncorrelated waves in the promising new international mobile telecommunication spectrum of 6.425-7.125 GHz for 6G applications, yet having a low profile of 1 mm (0.021 at 6.425 GHz) and a small area of 36 mm x 36 mm (0.77 x 0.77or 0.59 2 at 6.425 GHz). That is, the 8PM antenna module is equivalent to have 8 MIMO antennas densely integrated into a compact structure with each antenna occupying a small area of 0.074 2 . With a compact size, the 8PM antenna module or even its 1 x 2 array is easy to be embedded in the narrow backcover region of the modern smartphone. The 1 x 2 8PM antenna module array can provide 16 receive antennas in the mobile device for the 16 x 8 MIMO system with 8 spatial streams. With an extreme or a much larger number of the receive antennas than that of the spatial streams (extreme receive antennas-aided MIMO), the MIMO system can support a high signal modulation up to 1024 QAM (10 bits per symbol) so that a high spectral efficiency of larger than 56 bps/Hz is obtained. That is, with only 200 MHz bandwidth, the user can experience a data throughput of larger than 10 Gbps. Design considerations of the 8PM antenna module are addressed. Its 1 x 2 array is also fabricated and tested in the 16 x 8 MIMO system. Results of the fabricated module array and the 16 x 8 MIMO system testing are presented.INDEX TERMS Mobile antennas, MIMO antennas, 8-port MIMO antenna modules, 6G MIMO antennas, 16 x 8 MIMO systems, extreme receive antennas-aided MIMO, dual-polarized patch antennas

show abstract

“…24), which is not an access-restricted space inside the research laboratory. The fabricated module array is used as 16 Rx antennas (see Fig. 24) in the 16 x 8 MIMO system testing.…”

Section: X 8 Mimo System Testing Using the 16-port Module Array As 16...mentioning

confidence: 99%

Low-Profile Compact 8-Port MIMO Antenna Module and Its 1 × 2 Array for 6G 16 × 8 Device MIMO Application

Wong,

Hong,

Tseng

et al. 2023

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In future handheld devices, antennas could, for example, be placed on the back cover of the device [5], [6]. Thus, the antenna radiates towards the user when the phone is in the hand or inside the pocket.…”

Section: Introductionmentioning

confidence: 99%

SAR measurements for back cover mobile antennas

Varheenmaa

Lehtovuori

Viikari

2023

2023 17th European Conference on Antennas and Propagation (EuCAP)

Self Cite

View full text Add to dashboard Cite

We compare different low-profile antenna prototypes designed on the back cover of mobile devices around 2 GHz. Especially, we focus on controlling the specific absorption rate (SAR) without sacrificing the antenna efficiency. In addition, we study techniques to reduce the size of the antenna. We compare a traditional patch antenna, a sophisticated SAR-optimized design, and a patch minimized with a matching circuit. All these three options are manufactured. The measurement results show that SAR values can be decreased remarkably without compromising the antenna performance if exposure effects are taken into account in the design.

show abstract

“…One promising and yet rarely explored option is to place planar antennas on the back cover of the device [1]. The space between the back cover and the battery is typically only about 1 mm, which makes it challenging to achieve good efficiency.…”

Section: Introductionmentioning

confidence: 99%

Low-SAR Back Cover Mobile Antenna

Varheenmaa

Lehtovuori

Ylä‐Oijala

et al. 2022

IEEE Open J. Antennas Propag.

Self Cite

View full text Add to dashboard Cite

A novel antenna design with a low specific absorption rate (SAR) is introduced. The antenna has a very low profile and it is designed to be placed on the back cover of a mobile device at around 2 GHz. The solution is based on nested loops which distribute the field over a large volume so that the maximum SAR value remains relatively low in the user's tissue. The proposed design also provides relatively good efficiency, considering the extremely low profile, and the close proximity of lossy human tissue and the phone's main body. The manufactured prototype exhibits almost 50 % lower maximum SAR than a patch antenna used as a reference.

show abstract

Extremely Low-Profile Tunable Multiport Handset Antenna

Cited by 10 publications

References 44 publications

Low-Profile Compact 8-Port MIMO Antenna Module and Its 1 × 2 Array for 6G 16 × 8 Device MIMO Application

Low-Profile Compact 8-Port MIMO Antenna Module and Its 1 × 2 Array for 6G 16 × 8 Device MIMO Application

SAR measurements for back cover mobile antennas

Low-SAR Back Cover Mobile Antenna

Contact Info

Product

Resources

About