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Integrated yet decoupled dual antennas with inherent decoupling structures for 2.4/5.2/5.8‐GHz WLAN MIMO operation in the smartphone
Author(s) -
Wong KinLu,
Tsai ChihYu,
Li WeiYu
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30717
Subject(s) - decoupling (probability) , ground plane , strips , planar , mimo , directional antenna , multi band device , wireless , topology (electrical circuits) , computer science , physics , antenna (radio) , electronic engineering , electrical engineering , engineering , telecommunications , channel (broadcasting) , computer graphics (images) , control engineering , artificial intelligence
Integrated yet decoupled (IYD) dual antennas with inherent decoupling structures to achieve multi‐input multi‐output operation in the 2.4/5.2/5.8‐GHz wireless local area network bands in the smartphone are presented. The IYD dual antennas consist of two coupled‐fed loop antennas integrated into a compact planar structure of size 7 × 25 mm 2 . Each coupled‐fed loop antenna has a longer coupled‐fed end‐shorted strip for the 2.4‐GHz band (2400‐2484 MHz) and a shorter coupled‐fed end‐shorted strip for the 5.2/5.8‐GHz bands (5150‐5350/5725‐5875 MHz). The decoupling between the two antennas is obtained by the longer end‐shorted strips thereof as inherent decoupling structures. No external decoupling structures are required. This decreases the antenna size and simplifies the structure of the IYD dual antennas. For the smartphone application, the IYD dual antennas are disposed along the side‐edge frame thereof and placed perpendicular to and also centered to the system ground plane therein with a 1‐mm ground clearance only. Details of the proposed IYD antennas are presented and discussed.