Design And Research Of Digital T/R Module For P-Band Active Phased Array Radar

In recent years active phased array radar technology has developed rapidly, and it has become animportant research direction of phased array radar. T/R module is the core of the active phased arrayradar, and with the development of digital technology, T/R modules can be implemented with digitalcircuit instead of analog circuit. One kind of digital T/R module used for remote low-frequency activephased array radar is studied in this dissertation. The number of T/R module at launch based on DDStechnology required to produce a variety of radar and digital signal transfer form phase, after the poweramplification, filtering to achieve high power output; reception using digital receiver technology, theway of direct IF sampling, the output digital I/Q signal, the subsequent processing entirely in the digitaldomain, transmitter input and receiver output components are digital signals, to achieve a number ofT/R module design. Digital T/R modules include: the launch unit, high-frequency receiver unit, thedigital IF receiver unit, filters, power and control interface, etc. Components of the receiver/transmitterbranch using advanced packaging technology and integrated circuit design technology, the moduleminiaturization, high-density integrated circuit design; achieved using a single tube350-watt LDMOShigh-power, distributed power supply to achieve long pulse, a large duty cycle, high-performancedesign; considering the components of the circuit modules within the telecommunications, construction,cooling needs, optimize the integration of technology to achieve performance, reliability,maintainability, testability optimization. Finally, different design of digital T/R modules are compared,key indicators are calculated and analyzed. The results of the experiments based on the system showthat the digital T/R module designed in the dissertation can meet the requirements of the system.