摘要
由于恶劣环境下,短距离无线通信系统中的PCB天线往往会出现数据包丢失现象,提出将PCB天线改为环状结构的方案。利用高频结构仿真软件HFSS及ADS,通过对不同的天线材料、不同的环半径以及不同的天线半径的建模分析比较,确定了各项参数,并在发射模块的输出端口加入了一级放大电路,完成了阻抗匹配以及信号的进一步放大,改善了原无线动态测试系统的收发性能。经由网络分析仪测试实际电路得到的结果与仿真结果一致。实验表明,该设计在恶劣环境中的数据传输性能得到很大改善。
Aiming at the lost packets phenomenon occured in PCB antenna of the short-range wireless communication system in complicated condition, a Program of PCB antenna to circle antenna is designed. Make use of high frequency structure simulation software HFSS and advanced design system ADS , by comparison between modeling and analysis with different antenna materials, different radiuses of the circle and different radiuses of the antenna, fix on the parameters, and insert an amplifying circuit to the output port of the transmitter, accomplish the impedance matching and further amplifying of the signal, make improvement to the transmitting and receiving quality of the wireless dynamic testing system the results obtained by network analyzer to test the actual circuit are consistent with simulation results. Tests show that performance of data transmission of the design is greatly improved in poor environment.
出处
《电子测试》
2011年第3期63-66,86,共5页
Electronic Test
关键词
短距离无线通信
环状天线
PCB
仿真
wireless communications in short range
circle-shaped antenna
PCB antenna
simulation
