User Guide

PAMS
Technical Documentation
NME–3
Technical Information
Page 59
Issue 1 10/99
Table 47. UHF local signal input in CRFU_1a
Parameter Min. Typ. Max. Unit/Notes
Input frequency range 990 1040 MHz
Input level 200 700 mVpp
Input resistance 100 ohm
Input capacitance 1.5 pF
PLL Circuit
Table 48. UHF PLL block in PLUSSA, requirements
Parameter Min. Typ. Max. Unit/notes
Input frequency range 650 1700 MHz
Input signal level (f<1.5 GHz) 200 mVpp
Input resistance 600 700 Ohm
Input capacitance 1.8 3 pF
Supply current 10 12 mA
Reference input frequency 13 MHz
Reference input impedance 10||1 kΩ ||pF
Phase comparison frequency 1 MHz
Charge pump output
current 1
current 2
0.5
2.0
mA
Sink to source current match-
ing error of the charge pump
+/– 5 %
Charge pump current error +/– 10 %
Charge pump current temper-
ature variation
+/– 10 %
Charge pump leakage current 5 nA
Phase detector phase noise
level
–163 dBc/Hz
Antenna
In CD949 the responsibility for the antenna is at the customer. The CD949
project responsiblility ends at the RF connector (MINI–UHF type). The
impedance at this point is 50 Ohm. The antenna connection itself is
designed to withstand 16.5V DC. This is achieved by DC decoupling by a
simple capacitor in series to the rf input.
Antenna Specification
There is no antenna specification for the CD949 antenna. Any standard
active or passive GSM antenna should work together with CD949.