Rf in all nokia bb5

[nalkershy]

i well talk about netwerk in all nokia mobiles (all thengs about segnals)
part 1 : in mobiles contents helgo (rf) sutch as 9500

N9500 CMT RF training
Content

General
N9500 RF Implementation
Block diagram
Power distribution
Helgo86G, PA & Antenna Switch Module
Engine PWB
Location of the RF Key components
TX layout
TX GSM and EDGE operation
GMSK and 8PSK block diagrams
TX tunings in EDGE


General

9500 RA-2:
900/1800/1900 MHz GSM/EDGE

US 9500 RA-3:
850/1800/1900 MHz GSM/EDGE



N9500 RF Implementation


Starting point was N3220 (Jesse) RF implementation
Several RF Keycomponents as in N3220 / N3200 (Rio) ( = Trinity 1 Engine, BOM1 ):
PA (Renesas )
TX (1pcs) / RX (3pcs) filters
VCO
VCTCXO
RFIC changed to Helgo86G, TFBGA88 package 6x6 mm2 ( Helgo73, TFBGA108, 8x8 mm2)
Small differencies to external discretes around Helgo
9500 specific PWB placement
GPRS MSC10 feature added ( N3220 MSC6 , N3200 MSC10 )
EGPRS MSC10 feature added ( N3220 MSC2, 2+1 max RX + TX slots )
3+2 / 4+1 max RX+TX slots
2 TX slot EDGE functionality
Power scaling is used in GMSK TX dual slot function (2 * TX slot)
900 GMSK: 32.5 -> 29.5 dBm
1800 GMSK: 29.5 -> 28.5 dBm
1900 GMSK: 29.5 -> 28.5 dBm
8PSK powers are same in single and dualslot





RF Frequency Plan




Power distribution

VR1...9 & VrefRF01 voltages from UEM
Vbatt from battery


Vr1-----pll chrge pump (4.8)v
Vr2----tx modulators,vpectrl3s(alc).driver
Vr3---vctcxo.synthesizer digital parts
Vr4—helgo pre-amps.mixers.dtos
Vr5—dividers.lo-buffers.prescaler
Vr6--- linas.helgo baseband (vdd-bb
Vr7--- vco
Vrefrf01--- ref.v0ltage for helgo
Vrefrf02
Vbatt -------pa

[nalkershy]

Helgo86G

TFBGA88 package
6 mm x 6 mm body size (typical)
0.5 mm ball to ball grid
GMSK (GSM) and 8PSK (EDGE) functionality
Receiver:
850/900 & 1800 LNA integrated
1 demodulator (mixer) / band (3 pcs)
Channel selection filter
BB amplifiers for I/Q signals amplification
Transmitter:
One I/Q modulator for 850 or 900, the other one for 1800 & 1900
ALC stages and buffers
SHF range PLL
Power control block




Power Amplifier Module (PA)
PF09003BN for RA-2 (900/1800/1900)

PF09009BN for RA-3 (850/1800/1900)

GMSK / 8PSK functionality




Antenna switch module (ASM)

3 control signals Vant1 ... 3

3 RX output and 2 TX inputs

Based on diode switches

[nalkershy]

9500 1bt engine (top side)






Location of the RF Key components






TX layout




TX GSM and EDGE operation


GMSK operation
Control voltages TXC, TXP are used for TX

8PSK (EDGE) operation
Control voltages TXC, TXP are used together with
IREF and TXA

PA mode (GMSK/8PSK) is selected by MODE

[nalkershy]

TX GMSK operation

TX Block diagram



TX 8PSK operation



Items in EDGE tunings with Phoenix SW
I/Q tuning
same settings and procedure as in GSM tuning



Power level tuning
ALL POWER LEVELS HAVE TO BE TUNED SEPARATELY !!

[nalkershy]

part 2 we well tallk about 7600



7600 RF Structure



6680 RF Block Diagram

[nalkershy]

Signal routes in RF Block diagram


GSM Receiver



WCDMA Receiver

[nalkershy]

GSM Transmitter



WCDMA Transmitter



Power Control Loop – WCDMA Transmitter 1/2

TXC is used to drive the VGA which is used as the “main power controller”
The PA outside is just for the final setting of the outgoing power
WCDMA uses closed loop SW power control, where the Base Station will provide information for the terminal to increase or decrease its power by 1 or 2 dB steps

Power Detection: It is required that terminal must be able to measure its output power in high power level. The power detector measure it and fed a voltage (WTXDET) back to RETU to undergo AD conversion
Output power needs to be limited to +21 dBm

Isolator: It passes RF power only in one direction. Without it, RF power may leak in and affect the output of the detection circuit, resulting in error in the power control loop

Power Control Loop – WCDMA Transmitter 2/2

SMPS: The supply voltage of the PA and limits the lowest supply voltage to 1.5V. At highest power levels the SMPS output settles nominally to 3.2V
The supply voltage and the reference current lines (DAC 101 and DAC 201) are used to set the PA to distortion-free gain according to PA vendor's specification; this is essential in WCDMA

Synthesizers

[nalkershy]

Phase Lock Loop (PLL)

The output of the phase det depend on the phase of the measured frequency compared to the phase of the reference frequency
PLL charge pump charges or discharges the integrated capacitor in the loop filter based on the output of the phase det (comparator)




Key Components 0f WCDMA Receiver

Why do we need Additional Filtering?
This SAW filter is to attenuate the Tx signal which is leaking through the duplex filter and amplified by the LNA
Why do we use duplexer instead of antenna switch?
This is because Tx and Rx are functioning in continuous mode in WCDMA
What is the use of AGC stage?
This stage is used to maintain the voltage swing at the AD converter in BB at an adequate level

Power Control Loop – GSM Transmitter

Power Detector Circuitry in PA gives a DC value proportional to the output power
DC level is feedback to the negative input of ERROR amplifier in VINKU
The DC level is then compare with the TXC reference signal
The output of the ERROR amplifier is then fed to a buffer amplifier which drive the VGA

[nalkershy]

part 2

AHNE


WE TALKK ABOUT 6300

THE RF CHIP INSIDE OF NOKIA 6300 IS ACHIP CALLED AHNE>
AHNE CONTAINS FOLLOWING FEATURES AND FUNCTIONS INSIDE:

- MIXER FPR RX
- LNA(LOW NOISE AMPILIFIRE
-BB GAIN AMPLIFIRE
- DC COMPENSATION FOR RX
-PLL FOR EXTERNAL OSCILLATOR
-CURRENT TO VOLTAGE CONVERTOR(IN TX)
-TX MIX
-TX PREAMPLIFIRE
- TX POWER CONTROL
-REFERENCE VOLTAGE AND CURRENT SOURCE
-SYSTEM CLOCK BUFFER
-INTERNAL VOLTAGE REGULATOR


6300 (RM-217) RF Block Diagram

[nalkershy]

GSM - RX




GSM Power Control

[.::Naseer Al-islam::.]

wow nice work my brother keep on . i know its hard work thanks for all things

[xEDIx]

thank u, is good sharing shematic

[biniesh_08]

very nice work br.....................

[fuda]

Good work, Abdullah

[gsunny]

good job, keep it up