Miniaturization Designing And Implementation Of A Radar Receiver

With the development and application of microwave monolithic integrated circuit,low temperature co fired ceramic,hybrid circuit board,high speed broadband analogue to digital converter and direct digital synthesizer technology,Airborne,missile and space radar can achieve better performance in the strict size,weight and power consumption system of radar system.Radar system has become an important equipment which can detect,track,guide and fire control rapidly,accurately and reliably in complex environment.The receiver is an important component of the missile radar system,which will amplification,filtering,frequency conversion and demodulation,a series of three target echo signal.The miniaturize design of receiver usually includes RF front-end and the intermediate frequency receiver.Miniaturization of RF receiver is the use of microwave monolithic integrated circuit and lumped parameter chip devices,the integration and miniaturization of the receiver front-end design of microstrip band,LTCC,or by multi-layer circuit board such as etc。in this paper,The miniaturization design of radar receiver using ADS and HFSS simulation software,the specific contents include the following.1.Receiver scheme design,The receiver adopts a multi-channel superheterodyne receiver structure,It includes waveguide conversion,protection switch,low noise amplifier,Image Reject Mixer,Terminated SPDT PIN Switch,Fixed Attenuator Pads,matched filter circuit,etc.The product has three main receiving channels,and has an auxiliary receiving channel.Channel amplitude and phase calibration and compensation of auxiliary receiving channel.2.Miniaturize design of receiver,Waveguide to microstrip transition,Microstrip wilkinson power divider network,Optimization design by HFSS simulation。Low noise amplifier and mixer using integrated chip,optimized by ADS simulation.3.designing and implementation,implementation of the receiver by microassembly technology,The actual product prototype volume is 126 mm × 105 mm × 20 mm,the weight is about 450 g,the gain is about 30 dB,the mirror frequency suppression system is greater than 20 dB,the noise is less than 9dB,the current is less than 500 mA,basically meets the design requirements。...