短波多信道接收机的射频电路设计

RF Design of Multi-channel HF Receiver

提出多信道接收机射频电路的设计方案,应用多信道接收机实现短波信号测向.以接收灵敏度、抗干扰能力、增益和相位的一致性、信道的隔离度为重点,进行射频电路设计.采用同一校准信号源对射频电路进行校准,采取合适的措施保证各信道的隔离度.现场测向试验表明,应用该方案研制的样机的各项实测指标均能满足设计要求.

Adopting the multi-channel receiver to realize HF signal direction finding, the radio design scheme of multi-channel receiver is proposed based on the characteristics of the receiving sensitivity, antiinterference ability, gain and phase coherence. The RF circuit calibration is performed using the same signal source and the isolation of every channel is realized. Test results show that the designed scheme is reasonable.