PMB2240 Ver la hoja de datos (PDF) - Siemens AG

Número de pieza

componentes Descripción

Lista de partido

PMB2240

GSM-Transmitter

Siemens AG 

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37 Output impedance

fLO = 900 MHz; fI-IX = fQ-QX =10MHz;

see S-parameter 9.5

(open collector diff.

output)

38 Output power

PE_b

-12

-9

-6

dBm

cond1 **

1

’

-6

-3

0

dBm

cond2 ***

1

39 Carrier suppression aCmod 26

32

32

38

dB

cond1 **

1

dB

cond2 ***

1

40 Single sideband

suppression

aSSB

35

dB with 90° phase shift

1

between I and Q;

ROFF1,ROFF2 tuned

to maximum SSB

suppression ( appl.

hint: fig.1,sec. 8.3)

41 Suppression of

aIM3

62

third order

dB

cond1 **

1

distortion products

50

dB

cond2 ***

1

42 Signal to noise

S/N

-139

dBc/Hz

cond1 **

1

ratio *

PLO = -8 dBm foffset

= 20MHz

-142

dBc/Hz

cond2 ***

1

PLO = -8 dBm foffset

= 20MHz

* Design hint

** cond1 means VI-IX = VQ-QX = 500 mVpp

*** cond2 means VI-IX = VQ-QX = 1 Vpp

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Siemens AG

17

05.97

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