最近在做中频信号采集，中心频率大概在1GHz左右可调，想要做一个中心频率可调的带通抗混叠滤波器作为前端，在调研可调谐滤波器时，发现ADI的集成芯片都停产了，想请教一下大家，是否有其他的方案？
从ADI官网查找到中心频率可调的带通滤波器都停产了，比如HMC890LP5E
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