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HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide RF Specifications
Issue 01 (2010-12-31)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
27
Figure 4-3 shows the ESD protection circuit recommended for the antenna interface.
Figure 4-3 ESD protection circuit recommended for the antenna interface
It is recommended that you pay attention to the junction capacitance of the TVS
diode when you choose the model of the TVS diode. Ensure that the junction
capacitance of the TVS diode is lower than 1 pF.