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为什么用LTspice仿真LTC1562-2芯片辐频特性曲线时，信号源的幅值显示的不是0dB？



		

			

									
					    NigelXT
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Mar 3, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    为什么用LTspice仿真LTC1562-2芯片辐频特性曲线时，信号源端（绿色水平线）的幅值显示的不是0dB？如下图：
    

    绿色的水平线量的是信号源V1输出端，蓝色线是第8阶带通滤波V1C脚输出；
    

     
    

     
    
									
			        
		
    

				
						
        

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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