Design of a PLL Frequency Synthesizer for RSSI Applications Using Phase Noise Analysis

위상잡음 해석을 이용한 RSSI용 PLL 주파수합성기 설계

  • Received : 2011.08.30
  • Published : 2011.12.25

Abstract

In this paper, a PLL frequency synthesizer for RSSI applications is designed by phase noise analysis. Required synthesizer performance is achieved by optimizing the noise performance of PLL components and a loop transfer function, since its phase noise, lock time, and spur suppression capability are determined by the performance of loop components and loop filter characteristics. As an application example, a PLL frequency synthesizer for RSSI applications, which operates at the frequency of 2.288GHz, is designed using the phase noise analysis. The validity of the design technique is proved by experiments.

본 논문에서는 위상잡음 해석을 이용하여 RSSI(receiver signal strength indicator)용 PLL 주파수 합성기를 설계한다. PLL의 위상잡음, 잠금시간(lock time) 및 스퍼(spur) 억제 능력은 루프 요소의 성능과 루프 필터에 의하여 결정되므로, 합성기의 요구 성능은 PLL 요소의 잡음 성능과 루프 전달함수를 최적화함으로써 구할 수 있다. 이의 응용 예로써, 2.288GHz에서 동작하는 RSSI용 PLL 주파수 합성기를 위상잡음 해석을 이용하여 설계하며, 실험을 통하여 설계의 타당성을 입증한다.

Keywords

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