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VX8350
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.1.2.3 RFR6500 – LNA part (U106)
The RFR6500 has cellular, and PCS LNA, respectively. The characteristics of Low Noise Amplifier (LNA) are low
noise figure, high gain, high intercept point and high reverse isolation. The frequency selectivity characteristic of
mobile phone is mostly determined by LNA.
The specification of VX8350 LNA is described below:
Low gain Middle gain High gain Units
Cellular PCS Cellular PCS Cellular PCS
Gain -19 -20 3 -3 14 15 dB
Noise Figure 20 20 4.5 6 1.3 1.1 dB
Input IP3 10 10 5 10 7 3 dBm
Parameter
3.1.2.4 GPS LNA(U108)
The characteristics of Low Noise Amplifier (LNA) are low noise figure, high gain, high intercept point and high
reverse isolation. The frequency selectivity characteristic of mobile phone is mostly determined by LNA.
The specification of VX8350 GPS LNA is described below
dBm+4.7IIP3
dBm1.81dB compression point
dB0.8Noise Figure
dB14.3Gain
UnitsGPS BandParameter
3.1.2.5 RX RF SAW FILTER(F100, F101)
The main function of RX RF SAW filter is to attenuate mobile phone spurious frequency, attenuate noise amplified
by the LNA and suppress second harmonic originating in the LNA.
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