MB54609 Datasheet, PDF (16/23 Pages) Fujitsu Component Limited. – Quadrature Modulator IC (With 1.0 GHz Up-converter)

MB54609
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• Modulation precision and output spectrum (test circuit 2)
@ Baseband signal: π/4 DQPSK, 42 kbps, 1.0 Vpp, PN 15, Root-Nyquist filter α = 0.5
Input signals: LO1 = 356 MHz, –5 dBm; LO2 = 1619 MHz, –5 dBm
Output signal: RFout = 1441 MHz
• Modulation precision
• Output spectrum
148
RMS Vector Error = 2.243%
Peak Vector Error = 4.552%
RMS Magnitude Error = 1.597%
Peak Magnitude Error = 3.756%
RMS Phase Error = 0.902 degs
Peak Phase Error = –1.977 degs
Carrier Freq Offset = –1.454e+03 Hz
Carrier Phase Offset = 7.417 degs
Carrier Leak
= –33.001 dB
Bias Vector
= ( 1.839, 1.275) %
Gravity Center = ( –1.295, 0.833) %
VG : 7.000e-02 V / Div
Baseband Filter: RtNyq (0.500) Rectangle Len = 64 OSR = 4.761905
CENTER = 1441 MHz
SPAN = 200 kHz
RBW = 3 kHz VBW = 3 kHz SWP = 100 ms AVG = 128
ATT = 10 dB
REF = –10 dBm 10 dB / div.
• Spectrum (test circuit 2)
@ Baseband signal: π/4 DQPSK, 42 kbps, 1.0 Vpp, 0000, Root-Nyquist filter α = 0.5
Input signals: LO1 = 356 MHz, –5 dBm; LO2 = 1619 MHz, –5 dBm
Output signal: RFout = 1441 MHz
• Span = 26.2 kHz
• Span = 500 MHz
CENTER = 1441 MHz
SPAN = 26.2 kHz
RBW = 300 Hz VBW = 100 Hz SWP = 4 s
ATT = 10 dB
REF = –10 dBm 10 dB/div.
16
CENTER = 1619 MHz
SPAN = 500 MHz
RBW = 1 MHz VBW = 1 kHz SWP = 3 s
ATT = 10 dB
REF = –10 dBm 10 dB/div.
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