Hepta-Band Metal-Frame Antenna for LTE/WWAN Full-Screen Smartphone

Liu, Ying; Cui, Wei; Jia, Yongtao; Ren, Aidi

doi:10.1109/lawp.2020.2996712

Cited by 38 publications

(25 citation statements)

References 13 publications

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“…The antenna covers the 2G, 3G, 4G, and 5G applications, but has a large volumetric size of 80 × 140 × 0.8 mm 3 using FR4 substrate. A hepta-band metal-frame antenna for LTE/WWAN full-screen smartphone was recently proposed and presented in [ 38 ]. Like the aforementioned design structures, the antenna has an overall size of 50 mm × 70 mm × 6mm while being designed on FR4 substrate with a footprint of 154 mm × 72 mm.…”

Section: Introductionmentioning

confidence: 99%

A novel quadband ultra miniaturized planar antenna with metallic vias and defected ground structure for portable devices

Mpele¹,

Mbango²,

Konditi³

et al. 2021

Heliyon

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A novel heart-shaped monopole antenna used in wireless portable communication devices is proposed and discussed in this paper. The antenna has a radiant patch surface area of 28.504 mm 2 , the physical size of 15 Â 12.5 Â 1 mm 3 , and electrical dimensions of 0.095λ 0 Â 0.079λ 0 Â 0.006λ 0 , where λ 0 denotes the wavelength of the free space at 1.89 GHz. Its prototype is printed on FR4 HTG-175, having a permittivity of 4.2 and a loss tangent of 0.019 at 1 GHz. The partial ground plane and two metallic vias connecting two open-ended branches of the slitted radiating patch to a parasitic conductor element results in about 98% miniaturization of the active patch area, as compared to the conventional antenna. The proposed antenna exhibits nearly an omnidirectional pattern in the elevation plane with a maximum radiation efficiency of 82.78% at 3.99 GHz, while a peak gain of 4.7 dBi is obtained at 6.5 GHz. The measured-6 dB impedance bandwidths demonstrate that the proposed quadband antenna operates in all the frequency bands of mobile telecommunication standards (2G/3G/4G/5G) and other applications, including WLAN, WiMAX, ISM, meteorological services, IEEE 802.11y, and C-band satellite communications. This antenna is easy to manufacture and can be used in most portable devices as a compact internal antenna. After simulating the modeled antenna using HFSS, a prototype was experimentally tested, and the measured results were compared with the data obtained by simulation. The parameters analyzed are return loss, bandwidth, and gain on all frequency bands. The fabricated prototype guarantees a minimum-10 dB bandwidth of 110 MHz and a maximum return loss of-12.2 dB, despite its low radiation efficiency of 21.43 % in the lower band dedicated to GSM applications. Furthermore, the proposed antenna operates as a narrowband and wideband.

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Section: Introductionmentioning

confidence: 99%

A novel quadband ultra miniaturized planar antenna with metallic vias and defected ground structure for portable devices

Mpele¹,

Mbango²,

Konditi³

et al. 2021

Heliyon

View full text Add to dashboard Cite

show abstract

“…10 that at the eight operating bands, the average measured gains are 2.04 dBi, 1.19 dBi, 2.57dBi, 3.48 dBi, 2.60 dBi, 3.05 dBi, 4.94 dBi, and 3.11 dBi, respectively. At the first, second, third, fourth, fifth, sixth, seventh, and eighth impedance bands, the maximum measured efficiency of the presented antenna are respectively 86.6%, 82.7%, 62.2%, 48.5%, 48.6%, 55.4%, 49.1%, and 44.8% and is acceptable for cellular communications [3][4][5]9,[19][20][21] . The efficiency of the proposed antenna in the 4th, 5th, 7th, and 8th bands is slightly less than 50% which is due to the excitation of surface waves.…”

Section: Resultsmentioning

confidence: 99%

“…The antennas reported in Refs. 3 , 6 , 9 , 16 can cover seven service bands (the GSM850, GSM900, DCS, PCS, UMTS, LTE2300, LTE2500), but WMT, WiFi, WiMAX, WLAN, and 5G bands are not covered. An octa-band antenna for LTE mobile phones was presented in Ref.…”

Section: Introductionmentioning

confidence: 99%

An octa-band planar monopole antenna for portable communication devices

Azim

Alam

Mia

et al. 2021

Sci Rep

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Due to the rapid development of wireless communication systems, good numbers of services and devices use different frequency bands and protocols. To concurrently cover all these services, the antenna in communication devices should operate over multiple frequency bands. The use of wide and multi-band antennas not only reduces the number of antennas necessary to cover multiple frequency bands but also lessens the system complexity, size, and costs. To operate over eight frequency bands to cover sixteen well-established narrow service bands, a planar monopole antenna is proposed for portable communication devices. The proposed antenna is comprised of an inverted F-shaped monopole patch with a rotated L-shaped strip and an F-shaped ground strip with a rotated L-shaped branch. The studied antenna can excite at multiple resonant modes which helps it to achieve eight measured operating bands of 789–921 MHz, 1367–1651 MHz, 1995–2360 MHz, 2968–3374 MHz, 3546–3707, 4091–4405 MHz, 4519–5062 MHz and 5355–6000 MHz. The achieved measured operating bands can cover sixteen popular narrow service bands for 4G/3G/2G, MWT, WiFi, WiMAX, WLAN, and sub-6 GHz 5G wireless communication system. The studied antenna achieved good gain, efficiency and exhibits stable radiation characteristics. Moreover, the antenna does not use any lumped element and left ample space for other circuitries which makes it easier to use in portable devices such as tablets, laptops, etc. with low manufacturing cost.

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“…Recently, many 5G MIMO antenna systems have been developed [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. To achieve the bandwidth response, different radiators have been presented, such as inverted F-shaped [ 4 , 5 , 6 ], Yagi-shaped [ 7 ], π-shaped [ 8 ], Y-shaped [ 9 ], T-shaped [ 10 ] and folded L-shaped [ 11 ]. A folded monopole and a gap-coupled loop branch are formed in [ 12 ] to realize good mutual coupling reduction.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band MIMO Antenna for 5G/WLAN Mobile Terminals

et al. 2021

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This paper presents a dual-band four-element multiple-input-multiple-output (MIMO) array for the fifth generation (5G) mobile communication. The proposed antenna is composed of an open-loop ring resonator feeding element and a T-shaped radiating element. The utilization of the open-loop ring resonator not only reduces the size of the antenna element, but also provides positive cross-coupling. The dimension of a single antenna element is 14.9 mm × 7 mm (0.27λ × 0.13λ, where λ is the wavelength of 5.5 GHz). The MIMO antenna exhibits a dual-band feature from 3.3 to 3.84 GHz and 4.61 to 5.91 GHz, which can cover 5G New Radio N78 (3.3–3.8 GHz), 5G China Band N79 (4.8–5 GHz), and IEEE 802.11 ac (5.15–5.35 GHz, 5.725–5.85 GHz). The measured total efficiency and isolation are better than 70% and 15 dB, respectively. The calculated envelope correlation coefficient (ECC) is less than 0.02. The measured results are in good agreement with the simulated results.

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Hepta-Band Metal-Frame Antenna for LTE/WWAN Full-Screen Smartphone

Cited by 38 publications

References 13 publications

A novel quadband ultra miniaturized planar antenna with metallic vias and defected ground structure for portable devices

A novel quadband ultra miniaturized planar antenna with metallic vias and defected ground structure for portable devices

An octa-band planar monopole antenna for portable communication devices

Dual-Band MIMO Antenna for 5G/WLAN Mobile Terminals

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