An Overview of Software Defined Radio's Smart Antenna: Development, Working Principle, Functions, and System Architecture
Software Defined Radio (SDR) originated from military communications. To ensure interoperability between different radio sets and achieve efficient, highly reliable collaborative communication among various military branches, the military initiated the earliest development of software-defined radios. With continuous technological advancements, SDR gradually gained attention in the commercial mobile communications sector.
The core concept of SDR is to place the Analog-to-Digital Converter (A/D) as close to the antenna as possible and use software to implement as many radio functions as possible. Its ultimate goal is to free the communication system from the constraints of hardware architecture to the greatest extent. By maintaining a relatively universal and stable system structure, various functions are realized through software, making system improvements and upgrades highly convenient and cost-effective, while also enabling interoperability and compatibility between different systems.
The smart antenna is an irreplaceable hardware input/output for Software Defined Radio and one of its key technologies. With the development of modern high-speed parallel Digital Signal Processors (DSPs), the implementation of smart antennas has become feasible, thereby making the application of Software Defined Radio a reality.
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An Overview of Software Defined Radio's Smart Antenna: Development, Working Principle, Functions, and System Architecture
by sdruav.com | Sep 28, 2025 | Articles
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