Single Ring Slot-Based Antennas for Metal-Rimmed 4G/5G Smartphones

Chen, Quangang; Lin, Huawei; Wang, Jianpeng; Ge, Lei; Li, Yujian; Pei, Tianqi; Sim, Chow‐Yen‐Desmond

doi:10.1109/tap.2018.2883686

Cited by 147 publications

(84 citation statements)

References 32 publications

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“…In addition, its TARC value is less than −30 at 3.6 GHz. Table 2 summarizes and compares the fundamental characteristics of the presented mobile-phone antenna with the recently reported 5G mobile-phone antenna designs [16][17][18][19][20][21][22][23][24][25]. It can be observed that the proposed design can provide better performances in terms of efficiency, isolation and ECC.…”

Section: Mobile-phone Antenna Designmentioning

confidence: 98%

“…However, placing multiple antennas in the limited space of a transceiver poses a significant challenge in the incorporation of the MIMO technique. According to the requirement of cellular communications, compact, wideband and high isolation MIMO antenna is an urgent demand in the future mobile terminal and the portable applications [12][13][14][15][16][17]. Recently, several techniques have been introduced to design massive MIMO antennas for 4G and sub-6 GHz 5G mobile terminals [18][19][20][21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

et al. 2019

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A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna elements placed at different corners of the mobile-phone printed circuit board (PCB). A low-cost FR-4 dielectric with an overall dimension of 75 × 150 mm2 is used as the design substrate. The antenna elements are fed by 50-Ohm L-shaped microstrip-lines. Due to the orthogonal placement of microstrip feed lines, the diamond-ring slot elements can exhibit the polarization and radiation pattern diversity characteristic. A good impedance bandwidth (S11 ≤ −10 dB) of 3.2–4 GHz has been achieved for each antenna radiator. However, for S11 ≤ −6 dB, this value is 3–4.2 GHz. The proposed design provides the required radiation coverage of 5G smartphones. The performance of the proposed MIMO antenna design is examined using both simulation and experiment. High isolation, high efficiency and sufficient gain-level characteristics have been obtained for the proposed MIMO smartphone antenna. In addition, the calculated total active reflection coefficient (TARC) and envelope correlation coefficient (ECC) of the antenna elements are very low over the whole band of interest which verify the capability of the proposed multi-antenna systems for massive MIMO and diversity applications. Furthermore, the properties of the design in Data-mode/Talk-mode are investigated and presented.

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Section: Mobile-phone Antenna Designmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

et al. 2019

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“…However, the larger antenna size and the lack of integration with metal casing make it unsuitable for modern mobile phones. In other designs, the varactor diode and PIN diode were used for reconfiguration, resulting in multiple antenna states [16][17][18]. This is a very promising design, but only covers part of the high-frequency bandwidth, which limits its application in future 5G mobile phones.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable 3-D Slot Antenna Design for 4G and Sub-6G Smartphones with Metallic Casing

Yang

2020

Electronics

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The design of a reconfigurable three-dimensional (3-D) slot antenna for 4G and sub-6G smartphone application is presented in this paper. The antenna is located at the bottom of the smartphone and integrated with a metallic casing. Positive-Intrinsic-Negative (PIN) diodes are loaded at the dual-open slot and the folded U-shaped slot, respectively, which are used to realize four working states. The antenna has a compact volume of 42 × 6 × 6 mm3, which can cover the long term evolution (LTE) bands of 698–960 MHz and 1710–2690 MHz, and the sub-6G bands of 3300–3600 MHz & 4800–5000 MHz. The design processes are presented and the structure is optimized, fabricated and measured. The comparison to other state-of-the-art antennas shows that the proposed design has multiband characteristics with small size.

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“…This designed structure is compact, planar, and easy to manufacture in [11]. With the popularity of full-screen mobile phone, side-edge frame antenna is a hot topic in current research [12][13][14][15][16][17]. A MIMO antenna array printed along the long frame of the phone is presented in [12], working in the 3.5 GHz band and 5 GHz band.…”

Section: Introductionmentioning

confidence: 99%

“…In [15], similarly, a side-edge frame antenna array containing T-shaped feeding and U-shaped radiating elements is reported, working at the 3.5 GHz band (3400-3600 MHz). A multiband MIMO antenna array is designed for metal-rimmed mobile phone applications in [17], based on a 2-mm wide ring slot which is realized between the metal rim and ground. In order to reduce the coupling between multiple ports, neutralization technology is often used to improve isolation [18].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Mimo Antenna Array for Compact 5g Smartphones

Wei¹,

Feng²

2020

PIER C

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An eight-port antenna system for fifth-generation (5G) multi-input multi-output (MIMO) mobile communication in smartphones is proposed, working in 3.5 GHz frequency band (3400-3600 MHz) and 5 GHz frequency band (4800-5100 MHz). The presented eight-port antenna array consists of four vertical structure antennas placed at four corners and four horizontal structure antennas etched along the two long sides of the circuit board. The height of vertical structure is only 4 mm, which is suitable for ultra-thin smartphones. The design of eight-port antenna array was fabricated and measured. According to the test results, an ideal impedance matching (superior to 10 dB), preeminent isolation (superior to 17 dB), and excellent efficiency (superior to 61%) are obtained over the 3.5 GHz frequency band and 5 GHz frequency band. In order to evaluate MIMO performance, the ergodic channel capacities and envelope correlation coefficients (ECC) are also investigated.

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Single Ring Slot-Based Antennas for Metal-Rimmed 4G/5G Smartphones

Cited by 147 publications

References 32 publications

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems

Reconfigurable 3-D Slot Antenna Design for 4G and Sub-6G Smartphones with Metallic Casing

Dual-Band Mimo Antenna Array for Compact 5g Smartphones

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