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LG Electronics Inc.
VX11000
1.2.4 RTR6500 – LNA part (U1009)
The RTR6500 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 VX11000 LNA is described below:
Parameter Low gain Middle gain High gain Units
Cellular PCS Cellular PCS Cellular PCS
Gain -20 -20 4 -3 16 16 dB
Noise Figure 20 20 4 4 1.6 1.7 dB
Input IP3 +10 +10 +5 +10 +8 +6 dBm
1.2.5 GPS LNA(U1001)
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 VX11000 GPS LNA is described below
Parameter GPS Band Units
Gain 13.1 dB
Noise Figure 0.77 dB
1dB compression point +3.4 dBm
IIP3 +7 dBm
1.2.2 Diplexer (F1000)
The main function of Diplexer is to prohibit the other band signals from flowing into the one band circuit and vice
versa. RF designer can use Dual-band Diversity antenna regardless of frequency band (800 and 1900 MHz).
The specification of VX11000 Diplexer is described below:
Cellular PCS
Frequency Range 824 –
894 MHz 1850 –
1990 MHz
Insertion Loss to
Common
0.5 dB Max
(At +25 deg)
0.6 dB Max
(At +25 deg)
Isolation
18 dB Min
(to PCS)
18 dB Min
(to Cellular)
Temperature Range -30 to +85 deg
1.2.3 Diversity Rx RF SAW FILTERs (F1001,F1002)
The main function of Diversity Rx RF SAW filter is to attenuate mobile phone spurious frequency, attenuate
direct RF frequency pick up.
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