小型化宽带微波频率合成器设计

Design of Miniature Wide Band Microwave Synthesizer

针对某型号便携式综合计量测试平台对微波频率源小型化、模块化的需求,采用PLL+DDS+PLL的频率合成技术和PXI总线接口技术实现了一种基于PXI总线控制、频率范围覆盖10~18 GHz的宽带微波频率合成器;测试数据表明,该频率合成器的相位噪声优于-98 dBc/Hz@10 kHz、杂散抑制优于-60 dBc、功率范围为-100^+10 dBm、频率分辨率为100 Hz;由于该频率合成器具有小型化、高性能等技术特点,可广泛应用于PXI总线控制的测试测量系统。

To satisfy the demand for miniaturization and modularization of the Microwave Synthesizer in the design of XX type portable comprehensive metrology and testing system,a wide band Microwave Synthesizer with 10 -18 GHz bandwidth was designed based on the control of PXI bus by the frequency synthesis technology of PLL ＋ DDS＋ PLL and PXI bus interface technology. It was shown in the test results that the SSB phase noise was lower than-98 dBc/Hz@ 10 kHz,the spurs suppression was lower than -60 dBc,the power range covered-100 - ＋ 10 dBm,and the frequency resolution was 100 Hz. Because of the advantages of miniaturization and high performance,the synthesizer could be widely used in the measuring system based on the control of PXI bus.