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4
Antenna Interfaces
UC200T-EM antenna interfaces include a main antenna interface. The impedance of the antenna port is
50Ω.
4.1. Main Antenna Interface
4.1.1. Pin Definition
The pin definition of main antenna interface is shown below.
Table 24: Pin Definition of the RF Antenna
Pin Name
Pin No.
ANT_MAIN
49
4.1.2. Operating Frequency
Table 25: Module Operating Frequencies
3GPP Band
EGSM900
DCS1800
WCDMA B1
WCDMA B8
4.1.3. Reference Design of RF Antenna Interface
A reference design of ANT_MAIN antenna pads is shown as below. It should reserve a π-type matching
circuit for better RF performance. The capacitors are not mounted by default.
UC200T-EM_Hardware_Design
I/O
Description
IO
Main antenna pad
Transmit
880~915
1710~1785
1920~1980
880~915
UMTS/HSPA(+) Module Series
UC200T-EM Hardware Design
Comment
50Ω impedance
Receive
925~960
1805~1880
2110~2170
925~960
Unit
MHz
MHz
MHz
MHz
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