User Guide

NSB-5
System Module PAMS Technical Documentation
Page 76 Nokia Mobile Phones Ltd. Issue 1 03/01
Directional Coupler
Table 35: Directional coupler specifications
Power Detector
Table 36: Power detector specifications
Note 1: RF input voltage versus detected output voltage
Power Control Section in SUMMA, Closed Loop Characteristics
Table 37: Power control and closed loop specifications
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Frequency range 1850 1910 MHz
Impedance level of primary circuit 50 ohms
Impedance level of secondary circuit 200 ohms
VSWR on primary line 1.8
Insertion loss 0.3 dB
Coupling -15 -13 dB
Isolation 25 dB
Directivity 10 dB
Power capacity 2 W
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Frequency range 1850 1910 MHz
Error over temperature; includes
coupler
-1 +1 %
Dynamic range 45 dB
Linear range (1) 35 dB
Bias current for detector diode 40 uA
Output voltage 0.1 2.2 V
Load resistance 10 kohms
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Output voltage 0.5 2.2 V
Detector input voltage 0.1 2.2 V
TXC input voltage 0.1 2.2 V