| 摘要: |
| 针对同址发射机对远端噪声的苛刻要求，设计一种偏移锁相架构发射机。提出并采用二进制电感调谐的方法，突破了偏移锁相发射机的技术难点，实现了压控振荡器的低噪声宽频段快速调谐。测试结果表明，发射机在30～108 MHz范围内调谐时间小于40 μs，宽带噪声低于-190 dBc/Hz，远端无杂散分量。该发射机已用于实际工程，具有良好的应用前景。 |
| 关键词: 跳频发射机 偏移锁相环 低噪声 同址干扰 |
| DOI： |
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| 基金项目:国家海洋局维权技术与应用重点实验室开放基金项目（1313） |
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| Design of a novel broadband frequency-hopping offset-PLL transmitter with low noise |
| CHEN Yungang,LUO Baiming |
| () |
| Abstract: |
| An offset-PLL architecture transmitter is presented in this paper aiming at the strict requirements of the far-end noise generated by co-site transmitter.Binary tuned inductors are proposed to overcome the main difficulty of the offset-PLL transmitter and realize voltage controlled oscillator（VCO） tuning fast in a wide frequency range with low noise.Test results show that over 30～108 MHz,tuning time of the transmitter is less than 40 μs，broadband noise is lower than -190 dBc/Hz,without any far-end spur.The transmitter has been applied in practical projects and exhibited good prospects. |
| Key words: frequency-hopping transmitter offset-PLL low noise co-site interference |
