Eight-Band Antenna With A Small Ground Clearance for LTE Metal-Frame Mobile Phone Applications

Huang, Daiwei; Du, Z.

doi:10.1109/lawp.2017.2772303

Cited by 45 publications

(39 citation statements)

References 15 publications

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“…There are many excellent antennas designs reported for metal‐rimmed mobile terminals . An inverted‐F antenna for heptaband WWAN/LTE operations is proposed .…”

Section: Introductionmentioning

confidence: 99%

“…Another method is to utilize the metal rim as part of the radiator, which can simultaneously reduce the size of the antenna and expand the impedance bandwidth. A compact eight‐band monopole antenna for LTE metal‐rimmed mobile terminals is proposed . This antenna uses two monopoles by slitting the metal rim, thereby covering a wide frequency band while preserving a small clearance area.…”

Section: Introductionmentioning

confidence: 99%

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An 11‐band multimode antenna for sub‐6 GHz applications in metal‐rimmed mobile terminals

Wang

2020

Micro & Optical Tech Letters

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A multimode antenna for sub‐6 GHz applications in metal‐rimmed mobile terminals is presented. The proposed antenna is composed of a multibranch driven strip, a parasitic grounded strip, and an integrated metal rim that is connected to the ground through two shorting stubs. The proposed antenna occupies a 5‐mm clearance area, featuring simple design without lumped components. The working principle of the antenna is analyzed in detail in terms of its multiple resonant modes and current distributions. The resultant |S11| ≤ −6 dB impedance bandwidth of the antenna covers the LTE 700/2300/2500, UMTS, GSM 850/900, DCS, PCS, and recently proposed n77 to n79 5G NR frequency bands. The prototype of the antenna is fabricated and the design is well validated by experimental results.

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“…There are many excellent antennas designs reported for metal‐rimmed mobile terminals . An inverted‐F antenna for heptaband WWAN/LTE operations is proposed .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An 11‐band multimode antenna for sub‐6 GHz applications in metal‐rimmed mobile terminals

Wang

2020

Micro & Optical Tech Letters

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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%

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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“…Therefore, the metal rim should be used as a radiator as well as a structure for a robust handset. Recently, there have been many studies to implement the metal‐rimmed mobile antenna . In the study of Liu et al, dual‐loop antennas with an inductive strip and a high‐pass matching circuit are proposed using the metal rim to cover a multiband.…”

Section: Introductionmentioning

confidence: 99%

“…Despite of their good performances, it is difficult to apply to mobile handsets due to the structural asymmetry. The proposed antennas in studies may be susceptible to hand effect due to side slit.…”

Section: Introductionmentioning

confidence: 99%

Symmetrical metal‐rimmed mobile antenna with decoupling network for penta‐band

Lee

2018

Micro & Optical Tech Letters

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A symmetrical metal‐rimmed mobile antenna, which is designed to be separated into two antennas covering different bands, is proposed for penta‐band in this letter. The proposed antenna consists of a gap‐coupled quarter wavelength loop antenna to reduce the length of an antenna and a decoupling network of 90° delay line to improve an isolation in the low band. Its resonant frequencies in low and high band can be controlled by the length of a feed line and a lumped series inductor, respectively. Since the slit of the metal rim is located at the center of the phone, the designed metal‐rimmed antenna could be less affected by the hand compared to the case where the slit is located on the side of the phone. To verify the performance, we have simulated and measured the characteristics of the proposed antenna without and with the decoupling network such as reflection coefficients, far‐field radiation patterns, and total efficiencies. Good agreement between the simulated and measured results is obtained.

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Eight-Band Antenna With A Small Ground Clearance for LTE Metal-Frame Mobile Phone Applications

Cited by 45 publications

References 15 publications

An 11‐band multimode antenna for sub‐6 GHz applications in metal‐rimmed mobile terminals

An 11‐band multimode antenna for sub‐6 GHz applications in metal‐rimmed mobile terminals

Dual antenna system for metal frame mobile phone applications

Symmetrical metal‐rimmed mobile antenna with decoupling network for penta‐band

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