摘要
为了有效抑制超宽带（UWB）通信系统和窄带通信系统之间潜在的干扰，设计了一款具有三阻带特性和高频截止特性的超宽带天线。天线总尺寸为33mm×19mm×1mm。该天线的辐射单元由一个椭圆形的单极子和一个倒梯形结构组成，由50Ω的矩形微带线馈电，接地板由一个矩形和一个开槽梯形结构构成。对天线进行加工并测试。结果表明，该天线在3.3～3．6GHz处的阻带由辐射单元上的凹形槽产生，5．15～5．35GHz和5．725～5．825GHz处的阻带由微带馈线两旁的u形寄生单元产生，10．8GHz高频处的截止特性是由微带线两旁对称的凹形寄生单元共同决定的。天线的测试结果与仿真结果吻合良好。
In order to suppress potential interference between UWB system and narrowband communication system effectively, a UWB antenna with three band-notched and high frequency rejection capability was designed. The magnitude of the antenna was 33 mm× 19 mm× 1 mm. The antenna radiated patch was consisted of an oval-shaped monopole an inverse trapezoid structure and feed by 50 Ω microstrip lines, and the ground plate was constituted by a rectangle and a grooved trapezoid structures. The antenna was made and detected. Results show that the band notch of 3.3--3.6 GHz is achieved by the concave slot on the radiated patch, while the U-shaped parasitic elements on both sides of the feed line respectively generate band-notches at 5.15--5.35 GHz and 5.725--5.825 GHz, two symmetric concave parasitic elements on both sides of the feed line, which cut off the out-of-band frequency above 10.8 GHz. Comparisons between the measured and simulated results show that the antenna has a good radiation characteristic.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2013年第6期22-25,30,共5页
Electronic Components And Materials
关键词
超宽带天线
三阻带
寄生单元
凹形槽
微带线
仿真
UWB antenna
three band-notches
parasitic elements
concave slot
mitrotrip line
simulation
