Four-Element Reconfigurable Coupled Loop MIMO Antenna Featuring LTE Full-Band Operation for Metallic-Rimmed Smartphone

Choi, Jaehyun; Hwang, Woonbong; You, Chang‐Cheng; Jung, Baek Ho; Hong, Wonbin

doi:10.1109/tap.2018.2877299

Cited by 90 publications

(55 citation statements)

References 15 publications

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“…There are many research articles about antennas for modern mobile phones . The antennas in References are single antenna elements for mobile phones with MFs.…”

Section: Introductionmentioning

confidence: 99%

“…The antennas in References are single antenna elements for mobile phones with MFs. The antennas in References have two or more antenna elements.…”

Section: Introductionmentioning

confidence: 99%

“…The antennas in Reference consists of three antennas, one antenna can cover the band of 824 to 960 MHz, and the other two antennas can cover the band of 1710 to 2690 MHz. The antennas in Reference consist of four antennas by using configurable ways, two antennas can cover the bands of 698 to 960 MHz and 2500 to 2690 MHz, and the other two antennas can cover the band of 1710 to 2500 MHz. The antennas in Reference consists of six antennas, two antennas are used to cover the band of 698 to 960 MHz, and the other four antennas are used to cover the band of 1710 to 2690 MHz.…”

Section: Introductionmentioning

confidence: 99%

“…The antennas in References and are the miniaturized antennas applied for MIMO system. Most of the antennas mentioned above are not suitable for an MF environment except the antennas in References . The elements of the antennas in References 12,17, and 21 are located at the two short sides of mobile phones, respectively, while the elements of the antennas in References and are located at the two long sides, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the antennas mentioned above are not suitable for an MF environment except the antennas in References . The elements of the antennas in References 12,17, and 21 are located at the two short sides of mobile phones, respectively, while the elements of the antennas in References and are located at the two long sides, respectively. The three elements of the antennas in Reference are located at the same short side.…”

Section: Introductionmentioning

confidence: 99%

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Dual antenna system for metal frame mobile phone applications

Huang

Wang

2019

Int J RF Microw Comput Aided Eng

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A dual antenna system with 77 mm × 10 mm × 7.5 mm for metal frame (MF) LTE/GPS mobile phones is proposed and studied. The antenna proposed in this study comprises two antenna elements (Ant 1 and Ant 2) and a decoupling line. Ant 1 as the main antenna that covers the lower band (698‐960 MHz), the GPS band, and the higher band (1710‐2690 MHz) consisting of a ground branch, a coupled line, and a tuning line. Ant 2 as the auxiliary antenna that covers the higher band consisting of a monopole branch and a match circuit. Ant 1 and Ant 2 form a two‐element MIMO antenna covering the higher band. The advantages of the proposed antenna are that the main antenna (Ant 1) covers the GPS band and all of the 2G/3G/4G bands, and the two‐element MIMO antenna covering the higher band, which consists of Ant 1 and Ant 2 located at the same side of a mobile phone with an MF, is obtained. A prototype is manufactured and tested. For Ant 1, the measured working bands (under −6 dB condition) are 685 to 965 MHz and 1480 to 2800 MHz, and the LTE700, GSM850, GSM900, GPS, GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands are covered. For Ant 2, the measured working band (under −6 dB condition) is 1640 to 2720 MHz, and the GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands are covered. The measured isolations between Ant 1 and Ant 2 are larger than 12 dB at the working bands. The measured efficiencies, envelope correlation coefficients, and mean effective gains are also presented.

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“…There are many research articles about antennas for modern mobile phones . The antennas in References are single antenna elements for mobile phones with MFs.…”

Section: Introductionmentioning

confidence: 99%

“…The antennas in References are single antenna elements for mobile phones with MFs. The antennas in References have two or more antenna elements.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%