Nokia NSB-5 Series Technical Documentation Manual page 4

NSB-5
System Module
Flash Programming ................................................................................................... 47
IBI Accessories ......................................................................................................... 48
Phone Power-on by IBI ......................................................................................... 48
IBI power-on by phone.......................................................................................... 49
RF Module .................................................................................................................. 50
RF Frequency Plan ................................................................................................... 50
DC Characteristics ................................................................................................... 50
Power Distribution Diagram ..................................................................................... 50
Control Signals ...................................................................................................... 53
Regulator Specifications ........................................................................................... 53
Functional Description ............................................................................................. 54
RF Block Diagram .................................................................................................... 54
Receiver .................................................................................................................... 55
Transmitter ................................................................................................................ 56
Power Detection Circuit ........................................................................................... 57
Frequency Synthesizers ............................................................................................ 60
AGC .......................................................................................................................... 61
AFC ........................................................................................................................... 62
Software Compensations .......................................................................................... 62
Power Levels (TXC) vs. Channel .......................................................................... 62
Modulator Output Level ........................................................................................... 62
Power Levels vs temperature .................................................................................... 62
RSSI .......................................................................................................................... 62
TX power range ........................................................................................................ 62
PA select function ..................................................................................................... 63
RF Block Specifications ............................................................................................ 63
GSM1900 Duplex Filter ........................................................................................... 64
Receiver Blocks ......................................................................................................... 65
LNA in CRFU_2a ..................................................................................................... 65
GSM1900 Receive Interstage Filter ......................................................................... 65
First Mixer (UHF) in CRFU_2a ............................................................................... 66
First IF Filter.............................................................................................................. 67
Second Mixer (VHF) in CRFU_2a ........................................................................... 67
Second IF Filter ........................................................................................................ 68
AGC and Third Mixer in SUMMA .......................................................................... 69
Third IF Filter ........................................................................................................... 70
Third IF Buffer in SUMMA ..................................................................................... 70
Transmitter Block ..................................................................................................... 70
IQ Modulator and TX AGC in SUMMA ................................................................. 70
Upconversion Mixer and Buffer in CRFU_2a .......................................................... 72
GSM1900 TX SAW Filter ........................................................................................ 73
TX Buffer ............................................................................................................... 73
GSM1900 TX Ceramic Filter................................................................................. 73
Power Amplifier MMIC ............................................................................................74
Directional Coupler ................................................................................................ 76
Power Detector ......................................................................................................... 76
Power Control Section in SUMMA, Closed Loop Characteristics .......................... 76
Synthesizer Blocks .................................................................................................... 77
Page 4
Nokia Mobile Phones Ltd.
PAMS Technical Documentation
Issue 1 03/01