Samsung SGH-2100 Specifications

3. Specification

3-1 General Specification

3-1-1 Frequency Range

- Transmit (Uplink)
E-GSM: 880 ~ 915 MHz
DCS: 1710 ~ 1785 MHz

- Receive (Downlink)
E-GSM: 925 ~ 960 MHz
DCS: 1805 ~ 1880 MHz

3-1-2 Channel Spacing: 200 kHz

3-1-3 Number of Channels

- E-GSM: 975~1023, 1~124: 174

- DCS: 512~885: 374

3-1-4 Frequency Spacing: 45 MHz

3-1-5 Modulation Data Rate

- 270.833 kbits/sec

3-1-6 Frame Period: 4.615 msec

3-1-7 Timeslot Period: 576.9 µsec

3-1-8 Modulation Type: 0.3 GMSK

3-1-9 MS Max Power

- E-GSM: 2W (33 dBm)

- DCS: 1W (30 dBm)

3-1-10 MS Min Power

- E-GSM: 3mW (5 dBm)

- DCS: 1mW (0 dBm)

3-1-11 Voice Coder Bit Rate:13 kbits/sec

3-1-12 Input / Output Impedance : 50½

3-1-13 VCO Frequency

- TX VCO E-GSM: 880 ~ 915 MHz
DCS: 1710 ~ 1785 MHz

- RF VCO E-GSM: 1171 ~ 1216 MHz
DCS: 2020 ~ 2126 MHz

- IF VCO RX: 233 ~ 259 MHz

TX: 246.5 ~ 259 MHz

3-1-14 Receiver IF Freguency

- 1st RX IF: 246 MHz

- 2nd RX IF: 13 MHz

3-1-15 VCTCXO Frequency

- 13 MHz (±1 PPM)

3-1-16 Operating Temperature

- Main : Nominal: +15 ¼C ~ +35 ¼C
Extreme: -10 ¼C ~ +55 ¼C

- TA : Nominal: +15 ¼C ~+35 ¼C
Extreme: -20 ¼C ~ +55 ¼C

3-1-17 Operating Voltage

- High Voltage: 4.1 V

- Nominal Voltage: 3.7 V

- Low Voltage: 3.4 V

3-1 Samsung Electronics

Samsung Electronics

Circuit Description

Samsung Electronics 3-2

3-2 RADIO INTERFACE

3-2-1 RF Block Diagram

3-2-2 Baseband Filter

To control the spectral splatter and thus the intersymbol interference (ISI), filtering is applied to the baseband
pulses. The required filtering achieved very simply using a small, low cost discrete LC structure, which has the
great advantage of not consuming current.

SAW

DCS

GSM

GSMTX2

DCSTX2

RxEN_FEDCS

RxEN_FEGSM

U401

SAW

F304F303

F301 F302

U300

Q300

RxEGSM

(925~960MHz)

RxDCS(1805~1880MHz)

TxEGSM(880~915MHz)

TxDCS(1710~1785MHz)

U305

DUAL

COUPLER

U405

DET.

DCSPAM U408

TXPOWER

SAW SAW BPF

246MHz

F300

Dip.

RXLO1DCS

2051.2~2125.8MHz

BANDSEL

DEMODEN

EGSM:1171.2~1216MHz

EGSM:493~518MHz
DCS:498~519MHz

DCS:310.8MHz
GSM:295.8MHz

DCS:2019.2~2125.8MHz

PLLEN

TXEN1

QRXP

IRXP

VMID

RXLO3
13MHz

TXEN1

DCSTX1

TXEN1 GSMTX2 DCSTX2

GSMPAM U402

GSMTX1

Dip. BPF

Mod.

QTX

REF
13MHz

QTXI
ITX
ITXI

VCO

LPF PDF

U500

1/5 BPF

1/3

VCO

X501

X500

DUAL

PLL

DUAL

VCO

VCO X2

Ref

Osc

BPF

U301

RXLO1GSM

1171.2~1205.8MHZ

RXLO2
259MHz

F305

PLL

O˚

90˚

LNA

VGA

LNA

OP

amp

PA

PA

SGH2100 RF SYSTEM BLOCK DIAGRAM