Details

Autor(en) / Beteiligte

• Sun, Libin
• Feng, Haigang
• Li, Yue
• Zhang, Zhijun

Titel

Compact 5G MIMO Mobile Phone Antennas With Tightly Arranged Orthogonal-Mode Pairs

Ist Teil von

• IEEE transactions on antennas and propagation, 2018-11, Vol.66 (11), p.6364-6369

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2018

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• In this communication, the novel compact tightly arranged pairs are employed to form a <inline-formula> <tex-math notation="LaTeX">4 \times 4 </tex-math></inline-formula> multiple-input-multiple-output (MIMO) system and an <inline-formula> <tex-math notation="LaTeX">8 \times 8 </tex-math></inline-formula> MIMO system operating at 3.4-3.6 GHz for fifth-generation (5G) mobile phones. Each tightly arranged pair is composed of a bent monopole and an edge-fed dipole with a compact size of <inline-formula> <tex-math notation="LaTeX">7 \times 12 </tex-math></inline-formula> mm 2 . The orthogonal-mode method is presented to mitigate the mutual coupling of the tightly arranged pairs without any external decoupling structure. With the help of the orthogonal mode, isolation performances across the desired band of the <inline-formula> <tex-math notation="LaTeX">4 \times 4 </tex-math></inline-formula> MIMO system and the <inline-formula> <tex-math notation="LaTeX">8 \times 8 </tex-math></inline-formula> MIMO system are better than 20 and 17 dB, respectively, with the elements closely spaced. The measured efficiencies are 51.7%-84.5%/49%-72.9%, and the measured envelope correlation coefficients are less than 0.06/0.07 for the <inline-formula> <tex-math notation="LaTeX">4 \times 4/ 8 \times 8 </tex-math></inline-formula> MIMO system. The proposed MIMO systems provide a promising solution to compact 5G MIMO mobile phone antennas with good isolation and diversity performance.