Wideband 5G MIMO Antenna With Integrated Orthogonal-Mode Dual-Antenna Pairs for Metal-Rimmed Smartphones

Sun, Libin; Li, Yue; Zhang, Zhijun; Feng, Zhenghe

doi:10.1109/tap.2019.2948707

Cited by 189 publications

(123 citation statements)

References 44 publications

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“…Herein HPC and Ca were used to generate Modes 2 and 3, respectively. In the metal frame application, 27 an open circuit was used on both sides of the metal frame, which resulted in a monopole resonance mode (mode 5). In the same case, the resonance path of the loop antenna was formed (Mode 6) by coupling the metal frame on the long side, and the degree of impedance matching was adjusted through HPC.…”

Section: Four Types Of Antennas and Experimental Resultsmentioning

confidence: 99%

“…As displayed in Figure 9, the vector current distribution observed on the metal frame indicates the mode contributed by the antenna. 27 First, the length of the first resonance mode (Mode 1) from point A to point B was approximately 62.2 mm (0.15λo at 750 MHz), which was in the long-path resonance mode of the IFA antenna. The inductance (L 2 ) was connected in series in the path, which reduced the quarter wavelength to 0.15λo, as presented in Figure 9A.…”

Section: Parameter Analysis and Discussionmentioning

confidence: 97%

“…This method can effectively improve isolation but destroys the texture of the metal frame. In their latest publication, 27 Li et al revealed that differential-fed and orthogonal modes were used. It has been welded on the inner and outer metal frames at the same time, and a shared radiator was achieved.…”

Section: Envelope Correlation Coefficient and Channel Capacitymentioning

confidence: 99%

See 2 more Smart Citations

Multiantennas conjoined with metal frame and integrated into 8 × 8 m ultiple‐input and m ultiple‐output array for fifth generation smartphone applications

Liao¹,

Huang

2020

Int J RF Microw Comput Aided Eng

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A new multiple-input and multiple-output (MIMO) antenna conjoined with a metal case and metal frame in mobile phones for fifth generation mobile network applications is presented. The main antenna is the metal frame inverted-F antenna (IFA) with a high-pass circuit (HPC) on the short side of the phone (Ant. 1); then, the system ground extending path and coupling are used to create a semi-slot antenna (Ant. 2). The metal frame radiating monopole antenna (Ant. 3) uses a low-pass circuit, and the IFA antennas (Ant. 4) with HPCs are placed in a clear space only 1-mm wide on the long side of the phone. To improve the isolation of the multiple antennas, the configuration of the MIMO antenna integration was investigated. The proposed four-or eight-MIMO array was comprehensively evaluated in the desired band. The characteristics of individual antennas were used to achieve pattern diversity, and they demonstrated good performance in channel capacity evaluation: 19.4 bps/Hz (four-antenna MIMO) and 38.6 bps/Hz (eight-antenna MIMO).

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Section: Four Types Of Antennas and Experimental Resultsmentioning

confidence: 99%

Section: Parameter Analysis and Discussionmentioning

confidence: 97%

Section: Envelope Correlation Coefficient and Channel Capacitymentioning

confidence: 99%

See 1 more Smart Citation

Multiantennas conjoined with metal frame and integrated into 8 × 8 m ultiple‐input and m ultiple‐output array for fifth generation smartphone applications

Liao¹,

Huang

2020

Int J RF Microw Comput Aided Eng

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show abstract

“…For example, the spatial diversity and polarization diversity have been utilized to increase the isolation in the device with large space between each antenna [32]- [35], [42]. [43]. Electromagnetic band gap (EBG) structure [36], frequency selective surface [37], [38] and resonators or hybrid resonators [39]- [41] have been employed to mitigate the mutual coupling in the 2 × 2 MIMO system.…”

Section: According To the World Radio Communication Conferencementioning

confidence: 99%

Ultra-Wideband MIMO Antenna System With High Element-Isolation for 5G Smartphone Application

Yuan

Hong

et al. 2020

IEEE Access

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In this paper, we presented an ultra-wideband multiple-input multiple-output (MIMO) antenna system with high element-isolation for the application in 5G metal-frame smartphones. We proposed T-shaped and C-shaped slots on the metal frame generating four resonances to enhance the bandwidth. What's more, we introduce modified H-shaped slots between each antenna-element to improve the elementisolation of MIMO antenna system. As a result, the MIMO antenna system has a wide bandwidth of 58% ranging from 3.3 to 6 GHz and the element-isolation is over 18 dB crossing the effective frequency band. Thanks to the decent element-isolation, the envelope correlation coefficient (ECC) between each antennaelement is below 0.05 providing a reliable anti-interference for the MIMO antenna system. In addition, the measured radiation efficiencies of the MIMO antenna system are higher than 40%. At last, we analyze the effects caused by user's hands and head to guarantee the robustness of the MIMO antenna system in practical applications. INDEX TERMS 5G communication, sub-6 GHz, ultra-wideband, high isolation, metal frame.

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“…The development of multi-mode mobile terminals has already aroused worldwide attention. In consequence, as a key part for terminal device, multi-mode and multi-band smartphone antenna is becoming increasingly important, especially those with incorporated MIMO system [4][5][6][7][8]. In November 2017, the Ministry of Industry and Information Technology of the People's Republic of China promulgated the 5G operating license of domestic mobile phones and defined the band division of a new generation of mobile communication.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Antenna Array for 4g/5g Smartphone Applications

Yang¹,

Sun²,

Zhou³

2020

PIER M

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In this paper, a hybrid antenna array for 4G/5G smartphone applications is presented. The hybrid antenna system is composed of one array of two antenna elements for 4G application and another array of six antenna elements for 5G application. By loading PIN diodes and changing the on/off state of the PIN switch, then the resonance point will shift. The 2-antenna array broadens the bandwidth of 4G frequency band and is capable of covering GSM850/900/DCS1800/PCS1900/UMTS2100 and LTE2300/2500 operating bands. A U-shape monopole strip and an S-shape slot coupling technologies are also introduced, the 6-antenna array improves the impedance matching for the proposed 5G antenna array and is capable of covering the 5G (3300-3600 MHz and 4800-5000 MHz), which can meet the demand of 5G application. Spatial and polarization diversity techniques are implemented on these antenna elements so that high isolation can be achieved. This hybrid antenna array is fabricated, and typically experimental results such as S 11 , isolation, radiation pattern efficiency, and channel capacity are presented. The measured results are in good agreement with the simulated ones.

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Wideband 5G MIMO Antenna With Integrated Orthogonal-Mode Dual-Antenna Pairs for Metal-Rimmed Smartphones

Cited by 189 publications

References 44 publications

Multiantennas conjoined with metal frame and integrated into 8 × 8 m ultiple‐input and m ultiple‐output array for fifth generation smartphone applications

Multiantennas conjoined with metal frame and integrated into 8 × 8 m ultiple‐input and m ultiple‐output array for fifth generation smartphone applications

Ultra-Wideband MIMO Antenna System With High Element-Isolation for 5G Smartphone Application

Hybrid Antenna Array for 4g/5g Smartphone Applications

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