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| 型號： | P13683EJ2V0AN00 |
| 英文描述： | uPC8106. uPC8109 and uPC8163 2.0GHz Silicon Frequency Up-converter ICs for Mobile Communications |
| 中文描述： | uPC8106。 uPC8109硅和uPC8163 2.0GHz的頻率上移動通信轉(zhuǎn)換器IC |
| 文件頁數(shù)： | 53/59頁 |
| 文件大?。?/td> | 447K |
| 代理商： | P13683EJ2V0AN00 |
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Application Note P13683EJ2V0AN00
53
6.
SYSTEM CONFIGURATION EXAMPLES
Two examples of system applications of these ICs are shown in Figure 6-1: one is the direct modulation method,
which modulates at the transmit RF stage and the other is the indirect modulation method, which modulates at the
transmit IF stage. The
μ
PC8109 is suitable as a local mixer for direct modulation because of its low current
consumption. The
μ
PC8106 is suitable as an RF up-converter for indirect modulation because of its low distortion.
Figure 6-1. System Configuration Examples
(a) Direct modulation method
PLL1 PLL2
To 2nd mixer
To 1st mixer (receive)
SW
1st.LO
2nd.LO
Local mixer
Filter
Phase
shifter
PA
AGC
Transmit stage
To antenna
0
90
PC8109
μ
I
Q
(b) Indirect modulation method
PLL1
To 1st mixer (receive)
PLL
N
Phase
shifter
PA
AGC
Transmit stage
RF up-converter
To antenna
0
90
PC8106
μ
I
Q
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