User Guide

PAMS
Technical Documentation
NME–3
Technical Information
Page 46
Issue 1 10/99
Table 20. Receiver characteristics (continued)
ValuesItem
Typical AGC step in LNA approx. 45 dB
Usable input dynamic range –104 ... –10 dBm
RSSI dynamic range –112 ... –48 dBm
AGC relative accuracy on channel ( accurate
range )
+/– 0.8 dB
Compensated gain variation in receiving band +/– 1.0 dB
Receiver Module Specification
Duplex filter
Table 21. Duplex filter specification
Parameter Transmit section Receive section unit
Center frequency,
ftx,frx
ftx : 902.5 frx : 947.5 MHz
BW ( bandwidth ) at
passband
+/– 12.5 +/– 12.5 MHz
Maximum insertion
loss at BW
1.5 2.8 dB
Minimum insertion loss 0.3 – dB
Ripple at BW, peak to
peak
1.0 1.0 dB
Terminating imped-
ance
50 50 ohms
min. input/output
matching Mag(S
11
)
and Mag(S
22
)
–11 –11 dB
Minimum attenuations
Freq.range Att. Freq.range Att.
640 ... 820 20 0...800 35 MHz/dB
925 ... 940 30 890...915 15 MHz/dB
940 ... 960 30 980...1050 15 MHz/dB
960 ... 976 10 1067...1102 35 MHz/dB
1574 ... 1577 25 1102...2000 25 MHz/dB
1760 ... 1830 30 2000...3500 30 MHz/dB
2640 ... 2745 30 MHz/dB
3520 ... 3660 30 MHz/dB
Permissible input pow-
er
4 AVG W
Temperature Range –35 ... 85 –35 ... 85 deg Cel