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Low‐profile dual‐wideband dual‐inverted‐L open‐slot antennafor the LTE/WWAN tablet device
Author(s) -
Wong KinLu,
Wu PeiRong
Publication year - 2015
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.29204
Subject(s) - wideband , multi band device , usb , patch antenna , electrical engineering , antenna (radio) , enhanced data rates for gsm evolution , engineering , physics , computer science , telecommunications , software , programming language
A low‐profile open‐slot antenna for the LTE/WWAN operation in the tablet device, such as a smartphone or tablet computer is presented. The antenna consists of two inverted‐L (IL) open slots, with one longer IL open slot for the low band of 698∼960 MHz and one shorter IL open slot for the high band of 1710–2690 MHz, and is referred to as a dual‐inverted‐L open‐slot antenna in this study. The open ends of the longer and shorter IL open slots face each other and are disposed at the top or bottom edge of the tablet device. Between the two open ends, there is a protruded ground suitable for accommodating electronic elements, such as a USB connector or a camera lens. The antenna shows a low profile of 7 mm to the top or bottom edge and is excited by two feeds, with the first and second feeds, respectively, exciting the longer and shorter IL open slots thereof. By aided with the wideband matching circuits in the first and second feeds, the antenna can provide two wide operating bands covering the 698–960 and 1710–2690 MHz bands. Easy control of the two feeds for the desired dual‐wideband operation is also obtained. The antenna is suitable for dual‐wideband LTE operation in the modern tablet device, especially for the tablet device with a narrow spacing between the display panel and the top or bottom edge thereof. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1813–1818, 2015