摘要
采用U型缝加载技术,设计了一种用于穿戴系统的双频平面倒F天线(PIFA),分别工作于GSM(全球通)的900MHz和WLAN(无线局域网)的2.45GHz频段,两个频段的相对阻抗带宽分别为10%和5%;在两个谐振频点处,天线的增益分别为0.4dBi和1.7dBi。天线具有低剖面结构、重量轻、结构简单等优点,完全满足穿戴系统中长、短距离无线通信要求。
The paper presents a dual-band PIFA loaded with U-shaped slots for wearable system. The antenna operates in the bands of 900 MHz of GSM and 2.45 GHz of WLAN, and has 10% and 5% impedance bandwidth respectively referenced to the lower and the upper center frequencies. The gains at the two resonant frequencies are 0.4 dBi and 1.7 dBi respectively. The designed antenna has the advantages of low profile, light weight, and easy manufactured, and meets the requirements of the long and short distance wireless communications in wearable system.
