Cell Broadcast (CB) is a mobile messaging technology that sends short alerts simultaneously to many phones within a defined geographic area. Standardized by ETSI and 3GPP, it is part of 2G, 3G, 4G, an
How to design 900MHz antenna
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Jul 16
Designing a 900MHz antenna requires a mix of RF theory, careful calculation, simulation, and testing. The process begins by choosing the right antenna type based on the application’s needs, such as wh