【摘要】：為某項目設(shè)計一款頻率在2 GHz~3 GHz寬帶跳頻源,頻率間隔為1 MHz,跳頻點數(shù)為1 001點。該跳頻源要求相位噪聲小于-100 dBc@1 kHz,雜散優(yōu)于60 dB。分析指標和軟件仿真計算,采用HITTITE公司的HMC830鎖相芯片來實現(xiàn)該設(shè)計方案。采用HITTITE公司的PLL仿真設(shè)計軟件對環(huán)路濾波器進行優(yōu)化設(shè)計后應(yīng)用到實際電路中,使得該芯片在-55℃到+85℃均可穩(wěn)定工作。通過外接串口通信控制模塊,實現(xiàn)頻率的跳變。最終該設(shè)計的實物測試相位噪聲、雜散指標均優(yōu)于目標值。測試得到該頻率源相位噪聲可達到-100 dBc/Hz@1 kHz,雜散指標能夠達到-70 dB,具有工程應(yīng)用價值
[Abstract]:For a project, a wideband frequency hopping source with a frequency of 2 GHz to 3 GHz is designed, with a frequency interval of 1 MHz and a frequency hopping number of 1 001. The frequency-hopping source requires that the phase noise be less than -100 dBc@1 kHz and the spur is better than 60 dB. The design scheme is realized by using the HMC830 phase-lock chip of the HITTITE company based on the analysis index and the software simulation calculation. The design of the loop filter by the PLL simulation design software of HITTITE is applied to the real circuit, so that the chip can work stably at -55 鈩，

本文編號：2478422