| 1. | The rf receiver consists of rf front end and baseband regulation module . the high - intermediate - frequency superheterodyne structure is adopted in the final scheme . the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system
系统采用超外差式变频结构设计,两级低噪声放大单元级联保证了接收机灵敏度,两级增益控制单元实现了所要求的接收机动态范围,并且整机的线性度也得到了保证。 |
