SC200L Hardware Design
SC200L_Hardware_Design
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NOTE
“*” means under development.
6.1.1 Main
and
Rx-diversity
Antenna Interfaces Reference Design
A reference circuit design for main and Rx-diversity antenna interfaces is shown as below. A
π
-type
matching circuit should be reserved for better RF performance
. The
π
-type
matching components
(R1/C1/C2, R2/C3/C4) should be placed as close to the antennas as possible and are mounted
according to the actual debugging. The C1, C2, C3, and C4 are not mounted and a 0
Ω
resistor is
mounted on R1 and R2 respectively by default.
Figure 27: Reference Circuit Design for Main and Rx-diversity Antenna Interfaces
6.1.2 Reference Design of RF Layout
For user’s PCB, the characteristic impedance of all RF traces should be controlled to 50
Ω
. The
impedance of the RF traces is usually determined by the trace width (W), the materials’ dielectric constant,
LTE-TDD
B38
2570~2620 2570~2620 MHz
LTE-TDD
B39
1880~1920 1880~1920 MHz
LTE-TDD
B40
2300~2400 2300~2400 MHz
LTE-TDD
B41
2496~2690 2496~2690 MHz
