Designing an analog filter with an arbitrary amplitude-frequency response poses significant challenges, primarily due to the inherent limitations of analog circuits compared to digital filters. While digital filters, particularly FIR filters, can achieve complex responses, analog filters are typically IIR filters, which restrict their capabilities. The inability to implement FIR filters in analog form arises from their non-causal nature, requiring memory that analog circuits cannot provide. Despite these limitations, the advantages of analog circuits, such as low latency and power consumption, suggest that further exploration into analog filter design is worthwhile. The discussion highlights the need for innovative approaches or references to existing research in this area.