基于肖特基二极管的310GHz紧凑型接收机前端OA北大核心CSTPCD

Schottky mixer is the key component of terahertz receiving system.Compared with the receiver based on SIS(superconductor-insulator-superconductor)mixer and HEB(hot-electron bolometer)mixer,the terahertz receiver system constructed on the basis of Schottky diode mixer does not rely on low-temperature accessory equipment,and it has the advantages of low cost,light weight,small volume and low power consumption.At present,the structure of terahertz receiver front-end based on Schottky diode mixer is relatively complex.To solve the problems of complex structure,low integration and high loss of terahertz receiver front-end,a 288-318 GHz sub-harmonic mixer based on Schottky diode and its local oscillation channel is proposed.Accordingly,a terahertz receiver system based on this mixer is constructed.The terahertz receiver's local oscillation channel consists of a 75 GHz sextupler,a power amplifier integrated module and a 150 GHz frequency doubler.The integrated design of the local oscillator channel makes the receiver integration greatly improved.The overall size of the integrated module is 20 mm×20 mm×43 mm.The final test of the receiver shows that:in the bandwidth of 288-318 GHz,the double sideband conversion loss of the receiver is 5.8-9.4 dB,and the noise temperature is 1 055-1 722 K,which has good RF performance.