Rf Frequency Plan; Dc Characteristics; Regulators - Nokia NSM-3 Series Technical Documentation Manual

NSM–3/3D
System Module

RF Frequency Plan

925–960
MHz
1805–1880
MHz
880–915
MHz
1710–1785
MHz

DC characteristics

Regulators

Transceiver has a multi function power management IC at baseband sec-
tion, which contains among other functions, also 7 pcs of 2.8 V regulators.
All regulators can be controlled individually with 2.8 V logic directly or
through control register. In GSM direct controls are used to get fast
switching, because regulators are used to enable RF–functions.
VREF_2 from CCONT IC and RXREF from COBBA IC are used as the
reference voltages for HAGAR RF–IC, VREF_2 (1.5V) for bias reference
and RXREF (1.2V) for RX ADC's reference.
Page 40
HAGAR
f f
f/2 f/2
f
f/2
PLL
f
f/2
E Nokia Corporation
PAMS Technical Documentation
I–signal I–signal I–signal I–signal
Q–signal
3420–
3840
MHz
26 MHz
VCTCXO
I–signal
Q–signal
Issue 4 02/2002
RX
TX