基于射频芯片A7105的航模无线收发系统的设计

Design of Model Aircraft Wireless Transceiver System Based on RF Chip A7105

基于射频收发芯片A7105,通过单片机WT51F516的控制处理,设计了一款2.4 GHz六通道航模无线收发系统。此无线收发系统核心部件采用射频芯片A7105与功放芯片AP1110,并使用跳频机制进行数据传输。基于ADS软件分析射频芯片外围电路和天线的阻抗特性并得到了50Ω阻抗匹配电路。此系统成功实现了100 m范围内的无线信号发射接收,具有成本低廉、功耗小、接收距离远的特点,并且能够应用在中低端航模中。

A 2.4 GHz six channels model aircraft wireless transceiver system was designed based on the wire- less transceiver chip A7105 and the single chip WTS1FS16. The core modules of this wireless transceiver system were radio fYequency chip A7105 and power amplifier chip AP1110, and frequency hopping mechanism was applied for data transmission. 50Ω Impedance matching circuits were obtained by analyzing impedance characteristics of peripheral circuit of radio frequency chip A7105 and antenna based on ADS software. The system was successfully realized the transmitting and received wireless signals within 100 meters. The system has the characteristics of low cost, small power consumption and far receiving distance. This could be applied in low-end model aircraft.