8 - TRANSCEIVER SECTION

Symbol

Description

Min.

Typ.

Max.

Unit

Frequency Range

800

1000

MHz

Channel Frequency Accuracy

-1

0

1

kHz

Modulation Deviation (synchronised with72 Kbits/s data rate)

18

kHz

Output Power (300

Ω balanced) high power mode

13

dBm

Sensitivity (source 300

Ω balanced) for 1E-3 BER

-103

-105

dBm

Signal max. for 1E-3 BER

0

dBm

8.1 - Receiver-Input Specification

LNA, first mixer and buffer

Symbol

Parameter

Min.

Typ.

Max.

Unit

Conversion voltage gain

33.7

± 1.5

dB

Available conversion power gain

21.5

± 1.5

dB

Input impedance

300

Ω // 3pF

-

Output impedance

5k

Ω // 3pF

-

Source impedance

300

Ω // -3pF

-

Load impedance

5k

Ω // -3pF

-

Noise figure

3.5

dB

1dB compression point (input)

-24

dBm

Third order intercept (input)

-14

dBm

First IF amplifier, second mixer and buffer

Symbol

Parameter

Min.

Typ.

Max.

Units

Conversion Voltage Gain

22.0

± 1.5

dB

Available Conversion Power Gain

16.3

± 1.5

dB

Input Impedance

700

Ω // 2pF

-

Output Impedance

2k

Ω // 2pF

-

Source Impedance

700

Ω // -2pF

-

Load Impedance

2.8k

Ω // -2pF

-

Noise Figure

6

dB

1dB Compression Point (input)

-32

dBm

Third Order Intercept (input)

-22

dBm

Second IF amplifier

Symbol

Parameter

Min.

Typ.

Max.

Unit

Conversion Voltage Gain

82

± 3dB

Available Power Gain (to DISCO)

86

± 3dB

Bandwith (3dB)

3

MHz

Input Impedance

10k

Ω // pF

-

Output Impedance (to DISCO)

1.1k

Ω // 2F

-

Source Impedance

2.2k

Ω // -2pF

-

Load Impedance (at DISCO)

see App. Diag.

Noise Figure

6

dB

1dB Compression Point (input)

-108

dBm

STB4395

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