DC autocalibration

GSM LNA

DCS LNA

2

2

1

2

1

2

PFD

R

1

1

D

IF PLL

integr.

IF VCO

640-656MHz

1/2

1/2

1

2

IQ Modulator

CP

DPD

APD

PM Detectors

AM Detectors

PFD

R

1

1

D

RF PLL

26MHz

integr.

RF VCO

3476-3980MHz

CP

PCS LNA

2

IQ Demodulator

IQ Demodulator

external
RF loopfilter

external
IF loopfilter

I Channel

Q Channel

postfilter

postfilter

26MHz
to Baseband

26MHz
to Bluetooth

State

machine

Serial

Interface

26MHz
Crystal

26MHz
VCXO

external

PM loopfilter

postfilter

Sub loop

down converter

850/900 MHz

1800/1900 MHz

26MHz

26MHz

external

AM loopfilter

ATT

GMSK

EDGE

Main loop
down converter

VIC

VID

Gain controller

1/2

GSM 1/4

XCS 1/2

TXLO

TXLO

B

a

seband

BATT+

VDD_RF1

VDD_RF2

RF_RAMP1

RF_STR

RF_DAT

RF_CLK

RF_AFC

TVCXO

PM_SIN26M

PF_SIN26M

BB_SIN26M

26MHz
to Power Asic

RF_QX

RF_Q

RF_I

RF_IX

LDO

B

A

TT+

PARAMP

50R

ATT

&

Combiner

postfilter

DIRCOUPLER

DIRCOUPLER

RF

_

B

A

N

D_

S

W

TX

_

O

N

RF_BAND_SW

PA
Agilent
QCPM8861

integr.
TXVCOs

2

2

2

external antenna

internal antenna

antenna

matching

mechanical
antenna
switch

EL71 RF Diagram

Transceiver IC

Renesas HD155153

FEM

Hitachi

HWXQ411/413

RF_FE_CTR_GSM

RF_FE_CTR_DCS

RF_FE_CTR_GSM

RF_FE_CTR_DCS