中圖分類號：TN742 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.223650 中文引用格式： 李世浩，蔣潤秋，莫世波. 基于諧波混頻的X波段頻率源設(shè)計[J]. 電子技術(shù)應用，2023，49(12)：132-136. 英文引用格式： Li Shihao，Jiang Runqiu，Mo Shibo. Design of X-band frequency source based on harmonic mixing[J]. Application of Electronic Technique，2023，49(12)：132-136.
Design of X-band frequency source based on harmonic mixing
Li Shihao，Jiang Runqiu，Mo Shibo
Chengdu Tianao Measurement and Control Technology Co.，Ltd.， Chengdu 611731， China
Abstract： In order to realize a high resolution, low phase noise, high spurious rejection, small size and low cost X-band frequency source, and to solve the problems of low frequency resolution of traditional phase-locked loop frequency synthesis and low output frequency of direct digital frequency synthesis, an X-band frequency source design method based on harmonic mixing and small-step phase-locked loop to improve phase noise and frequency resolution is proposed. This method adopts the architecture of harmonic mixing to output coarse step RF signal and HMC830LP6GE phase-locked loop to output fine step mixing loop, reducing the module's discrimination and fixing it to 1∶1.The results show that the X-band frequency source has an output frequency range of 8 GHz~12 GHz, an output power greater than 13 dB, a frequency step of 1 MHz, a spurious rejection better than 60 dBc, and a phase noise better than -115 dBc/Hz@10 kHz. The frequency source has the advantages of small hopping step, small size, low spurious and low phase noise, which can be applied to various applications requiring miniaturized, low phase noise and low spurious X-band frequency source.
Key words : X-band；frequency source；harmonic mixing；phase noise；spurious suppression
0 引言
隨著微波技術(shù)和器件設(shè)計制造技術(shù)的不斷發(fā)展，雷達設(shè)備、儀器儀表、消費電子設(shè)備已經(jīng)成為生產(chǎn)和軍事中必不可少的設(shè)備，而頻率源是現(xiàn)代雷達、電子干擾與對抗、儀器儀表、消費電子、通信設(shè)備的核心部件，其直接決定了電子設(shè)備的整體性能。頻率合成技術(shù)通常采用直接數(shù)字式（Direct Digital Synthesizer, DDS）和鎖相環(huán)式（Phase Lock Loop, PLL）兩種，但DDS技術(shù)具有合成頻率低的問題，PPL技術(shù)具有頻率分辨率低的問題。
