A method to realize a wide frequency-coverage frequency synthesizer with low spuriouslevel and low phase noise level is proposed in this paper.
提出了一种实现宽覆盖、低相位噪声、低杂散的频率合成方法。
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With the development of modern electronic technology, frequency synthesizers are required to have wider band, higher resolution, short frequency switching time and lower spuriouslevel.
On this base, the optimization of circuits for decreasing the spuriouslevel including determination of stage gain. loss and LO power is proposed. Finially, the application example is given.