The design of a 5.305 GHz series feedback free running dielectric resonator oscillator （DRO） is presented. Its simulation and optimization are realized by obtaining the unloaded Q factor of the cavity dielectric res...The design of a 5.305 GHz series feedback free running dielectric resonator oscillator （DRO） is presented. Its simulation and optimization are realized by obtaining the unloaded Q factor of the cavity dielectric resonator （DR） and analyzing the linear and nonlinear models of the DRO. CAD packages of DR_Rez and Agilent Advance Design System （ADS） are used and the best tradeoff among the output power, phase noise, and frequency stability is achieved. With the result of simulation, a physical oscillator prototype is constructed. The measured results show the good agreement with those of simulation.展开更多
文摘The design of a 5.305 GHz series feedback free running dielectric resonator oscillator （DRO） is presented. Its simulation and optimization are realized by obtaining the unloaded Q factor of the cavity dielectric resonator （DR） and analyzing the linear and nonlinear models of the DRO. CAD packages of DR_Rez and Agilent Advance Design System （ADS） are used and the best tradeoff among the output power, phase noise, and frequency stability is achieved. With the result of simulation, a physical oscillator prototype is constructed. The measured results show the good agreement with those of simulation.
文摘介绍一种基于负阻理论的C波段介质振荡器的设计方法,在设计过程中优先考虑了对振荡器外形结构尺寸的控制,力求使其小型化。通过选择合适的振荡电路、优化输出匹配网络,使用MGF1801B砷化镓场效应晶体管实现了振荡器,它的体积仅为20 mm×30 mm×12 mm。测试表明该振荡器频率为5.XX GHz,输出功率为18.7 d Bm,相位噪声为-106 d Bc/Hz@10 kHz。其尺寸小、结构简单、性能稳定、实用性强。
