Integrated Millimeter-Wave Wideband End-Fire 5G Beam Steerable Array and Low-Frequency 4G LTE Antenna in Mobile Terminals

Mohammad Mehdi Samadi Taheri, Abdolali Abdipour, Shuai Zhang, Gert F. Pedersen

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100 Citations (Scopus)
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Abstract

In this paper, a novel technique of collocating a millimeter-wave end-fire 5G beam steerable array antenna with a low-frequency planar inverted-F antenna (PIFA) is presented. In this technique, the low-frequency antenna can be transparent by using some grating strips between the low- and high-frequency antennas. A quad-element mm-wave array with end-fire radiation patterns operating in 22-31 GHz is integrated with a dual-band low-frequency PIFA in a mobile terminal. The novelty of this paper is the collocation of a high-frequency end-fire 5G antenna array with an old-generation low-frequency antenna, such as 4G in small space in the mobile terminal, without interfering with the radiation pattern and impedance matching of both low- and high-frequency antennas. The proposed 5G antenna covers 22-31 GHz and can scan ±50° with the scan loss of better than 3 dB. The coverage efficiency of the proposed mm-wave 5G antenna is better than 50% and 80% for a minimum gain of 4 and 0 dBi in 22-31 GHz, respectively. The gain of the high-frequency antenna array is better than 9.5 dBi at 28 GHz. The low-frequency antenna covers some practical 4G LTE bands from 740-960 MHz and 1.7-2.2 GHz bands. The measured results in both low and high frequencies agree well with the simulations.

Original languageEnglish
Article number8641468
JournalI E E E Transactions on Vehicular Technology
Volume68
Issue number4
Pages (from-to)4042-4046
Number of pages5
ISSN0018-9545
DOIs
Publication statusPublished - Apr 2019

Keywords

  • 4G
  • 5G
  • Antenna
  • collocation of 5G and 4G antenna
  • handset antennas
  • millimeter-wave
  • phased array antenna

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