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ADAR2001-EVAL TEST Guide



		

			

									
						Lee Jaegook
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Mar 17, 2022 
				
			
			
		


				
		

		    		    
		    
		    	
			
Could anyone clarify and give me any advice?


Part : ADAR2001-EVAL
Input Freq. : 8GHz
Output Freq. : 32GHz
Loss compensation of the instrument and cable has been set.


We tested ADAR2001-EVAL.
RFOUT1+ was connected to SA (Spetrum Analyzer) with Single Ended.
Output Power : 5dBm


RFOUT1+ was connected to SA (Spetrum Analyzer) with combiner.
Output Power : 10.5dBm


This was measured higher than the datasheet.
This doesn't seem to be normal behavior, is there any workaround?


And,
What is the PART of Combiner presented in UserGuide?



Can you advise me


Please kindly help.
Please. Can someone tell me?

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	














	

	

					



			








	
	
	
	



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													+1
							
			
				
									
							        
            
                                                                                                        
      
                            
    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                           			
			                            
                        
                on Mar 21, 2022 2:52 AM
            
            
					
    
	
    

		
		
    
					
    Hello,
    

    In Figures 9, 12, 13 at the datasheet, the differential output power is about 7.5dBm typical @ 32GHz, 2.5V, Pin=-20dBm  that is 4.5dBm, 3dB lower at the single-ended output power while unused output is terminated to ground through 50ohm resistor. So your +5dBm is pretty close to what is expected.
    

    What does "RFOUT1+ was connected to SA (Spectrum Analyzer) with combiner." mean? Do you mean"RFOUT1+ /-, differential output is connected to a 2:1 combiner and to S.A? And Pout is +10.5dBm at this configuration, right?
    

    Then +5dBm @ Single-ended, +10.5dBm @ Differential with 2:1 combiner. That is not what was expected. Please double-check if you used the right combiner and the loss was compensated correctly? 
    

    We used Pulsar Microwave, JSO-50-471/6S in product characterization.
    

    Thanks
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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  • 
	
    



	
			
		
	



    
	
    
		
    
							
					
    
		
    
			
													+1
							
			
				
									
							        
            
                                                                                                        
      
                            
    • 
                                 Analog Employees 
                                
                            
      • 
                        
     
                                                           			
			                            
                        
                on Mar 21, 2022 2:52 AM
            
            
					
    
	
    

		
		
    
					
    Hello,
    

    In Figures 9, 12, 13 at the datasheet, the differential output power is about 7.5dBm typical @ 32GHz, 2.5V, Pin=-20dBm  that is 4.5dBm, 3dB lower at the single-ended output power while unused output is terminated to ground through 50ohm resistor. So your +5dBm is pretty close to what is expected.
    

    What does "RFOUT1+ was connected to SA (Spectrum Analyzer) with combiner." mean? Do you mean"RFOUT1+ /-, differential output is connected to a 2:1 combiner and to S.A? And Pout is +10.5dBm at this configuration, right?
    

    Then +5dBm @ Single-ended, +10.5dBm @ Differential with 2:1 combiner. That is not what was expected. Please double-check if you used the right combiner and the loss was compensated correctly? 
    

    We used Pulsar Microwave, JSO-50-471/6S in product characterization.
    

    Thanks
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
						
						
				
				
		
		
    
			
		
    
	
    

    

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