Reconfigurable Microwave Signal Processor Based on Branch-Line Coupler and Loop Resonator

The emerging real-time analog signal processing is a technology for processing analog signals with the advantages of fast processing speed, low latency, high accuracy and flexibility, which meets the needs of many real-time applications in a large range of applications. Real-time analog signal processing is also more advantageous for processing high-frequency signals that have a faster rate of changing. Mathematical operations can help real-time analog signal processing technology to achieve real-time acquisition, processing and output of analogue signals, and their implementation is of great significance to the development of real-time analog signal processing technology. In this paper, we propose a microwave analog signal processor that can perform a range of signal processing functions, including integration and amplification. The processor is based on a combination of a branch-line coupler and a loop resonator and a variable gain amplifier. This cost-effective solution offers new possibilities for real-time microwave analog signal processing and is expected to be widely used in various applications including wireless communications and radar sensors.