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KUATO ENGINEERING
 
 
 
 
 
 
 
 
 
 
 
  - Modulation
 
  - Pulse Shaping
 
   
   

 

     
 

Pulse Shaping
 
 
The restriction we have for designing the pulse is that digital PAM chip sets are incapable of generating pulses with more than 10Tb of time support therefore we have to limit the pulse in the time domain.
We use a Raised Cosine shape:

 
 

Figure 2: OQPSK Modulator
 
 


We use the following parameters for best fitting the frequency band [31.75GHz-32.25GHz]:

  • Maximum frequency = 50MHz
  • k = 0.1
  • Carrier frequency: f = 32GHz
 
 

Figure 3: Pulse Shape
Figure 3: Pulse Shape
 
 
The -3dB bandwidth of the passband signal is 96MHz.
 
 

Figure 4: Passband
Figure 4: Passband