The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Implementation of High Stable Phase-Locked Oscillator for X-Band Satellite Communication

X-Band 위성통신을 위한 고안정 위상 동기 발진기 구현

  • Published : 2009.09.30
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Abstract

In this paper, X-band satellite communication oscillator of double phase locked is implemented by constructing a couple of phased-locked loop, and then we have analyzed the phase noise of designed PLL-DRO. The designed phase-locked oscillator is consist of series feedback DRO, frequency divider, phase detector, loop filter and programmable PLL-IC. By dividing oscillation frequency of 12.6 GHz into two frequencies, it exhibits output power of 15.32 dBm at 6.3 GHz. Phase noises of implemented oscillator are -81 dBc/Hz@100Hz, -100.86 dBc/Hz@1 kHz, -111.12 dBc/Hz@10 kHz, -116 dBc/Hz@100 kHz and -140.49 dBc/Hz@1 MHz respectively. These indicate excellent stable operation of oscillator and very good phase noise characteristics.

본 논문에서는 두 개의 위상 동기 루프를 구성하여 이중으로 위상 고정시킨 band 위성통신용 국부 발진기를 설계하고 위상 잡음을 분석하였다. 설계된 위상 동기 발진기는 직렬귀환 유전체 공진발진기, 주파수 분주기, 위상검출기, 루프 필터 및 PLL-IC로 구성되어 있으며, 12.6 GHz의 발진 주파수를 2분주시켜 6.3 GHz에서 15.32 dBm의 출력값을 보였다. 제작한 발진기의 위상 잡음은 -81 dBc/Hz@100 Hz, -100.86 dBc/Hz@1 kHz, -111.12 dBc/Hz@10 kHz, -116 dBc/Hz@100 kHz 및 -140.49 dBc/Hz@1 MHz으로 매우 안정되며 우수한 특성을 보였다.

Keywords

References

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