Atec Agilent-E4437B - Manual (Page 15)

15
I/Q baseband generator
(continued)
Non-constant amplitude formats
FSK formats
Shift error versus symbol rate
(fc = 1 GHz, Gaussian filter, BbT = 0.5, modulation index = 0.5)
Shift error versus frequency
(Gaussian filter, BbT = 0.5, modulation index = 0.5,
symbol rate = 1Msys/s)
+ ––––– BPSK
X – – – OQPSK
• — —
π/4DQPSK
o ––– – 8PSK
# -------- 16QAM
+ -- -- -- 256QAM
x --- --- QPSK
RF EVM performance versus symbol rate
(fc = 1 GHz, root Nyquist filter, a = 0.25)
MSK formats
Phase error versus symbol rate
(fc = 1 GHz, Gaussian filter)
Phase error versus frequency
(Gaussian filter, BbT = 0.5, symbol rate = 1Msys/s)