Frequency Synthesizers - Nokia NKC-1X Series Technical Documentation Manual

CCS Technical Documentation
Parameter
Min voltage gain,
Mixer + 2nd IF (IF+2nd AGC min.)
Gain charge,
Mixer+2nd IF
IQ mixers + AMP2
RF input impedance differential
RF input frequency range
Conversion gain @ RI=1kohm
IF AGC gain range (5x6 dB)
IF AGC gain step (5 steps)
IF AGC gain error relative to max gain
AMP2 gain
-3dB frequency
LPF: 4th order Chebysev
LPF gain
Corner frequency tuning range
Corner frequency tuning step
Attentuation @ 30 kHz *
Attentuation @ 60 kHz *
Attentuation @ 120 kHz *
Attentuation @ 240 kHz *
Attentuation @ >480 kHz *
AGC
AGC gain range
AGC gain range step
7 steps
AGC gain error relative to max gain
Max IF/2nd IF buffer output level

Frequency Synthesizers

NKC-1X synthesizer consists of three synthesizers, one UHF synthesizer and two VHF
synthesizers. UHF synthesizer is based on integrated PLL and external UHF VCO, loop fil-
ter and VCTCXO. Due to the RX and TX architecture this UHF synthesizer is used for down
conversion of the received signal and for final up conversion in the transmitter. A com-
mon 2GHz UHFVCO module is used for operation on both low and highband. Frequency
divider by two is integrated in TACO.
Issue 1 02/03
Typical/
Minimum
Nominal
1.4
1.2
135.54
23.5 24
30
6
-0.5
18
21 25
0
14
24
55
80
60
40
-6
6
-0.5
Nokia Corporation
System Module
Maximum Unit/Notes
6 dB
0.9 dB, temp
-30...+85 C
kohm/pF
MHz
24.5 dB
dB
dB
+0.5 dB
dB
29 kHz
dB
17 kHz
1 kHz
dB
dB
dB
dB
dB
36** dB
dB
+0.5 dB
3 V pp (differential)
NKC-1X
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