Title :
A Compact Loop-Slot Mode Combination Antenna for Ultra-Thin Tablet Computer With Metallic Bottom Cover
Author :
Jui-Hung Chou ; Jo-Fan Chang ; Ding-Bing Lin ; Hsueh-Jyh Li ; Tzong-Lin Wu
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A novel compact dual-band loop-slot combination antenna for use in wireless local area network (WLAN) applications is proposed. The radiation mechanism is based on two resonant structure types, metal loop and slotline, combined into a single antenna to achieve WLAN 2.4 (2.4 ~ 2.484 GHz) and 5 GHz (5.15 ~ 5.85 GHz) operation. The proposed antenna is implemented in an ultra-thin tablet computer of dimensions 241×183×6.5 mm3, with a fully metallic cover on the bottom. The size of the proposed antenna is only 21×7.5×4.5 mm3 with a metal bottom cover below and an LCD panel nearby. The reflection coefficient measured from the antenna demonstrates that the operation bandwidth is 140 and 1300 MHz using a -10-dB definition in WLAN 2.4 and 5-GHz bands, respectively. In addition, good radiation performance is also achieved.
Keywords :
UHF antennas; VHF antennas; antenna radiation patterns; liquid crystal displays; microwave antennas; multifrequency antennas; notebook computers; slot antennas; LCD panel; WLAN application; antenna radiation pattern; bandwidth 1300 MHz; bandwidth 140 MHz; compact dual-band loop-slot mode combination antenna; frequency 2.4 GHz to 2.484 GHz; frequency 5 GHz; frequency 5.15 GHz to 5.85 GHz; gain -10 dB; metal loop; metallic bottom cover; reflection coefficient; resonant structure; slotline; ultra-thin tablet computer; wireless local area network application; Antenna measurements; Antennas; Metals; Reflection coefficient; Resonant frequency; Tablet computers; Wireless LAN; Dual-band antenna; loop antenna; slot antenna; tablet computer; wireless local area network (WLAN);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2316554
