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A ×49 Frequency Multiplier Based on a Ring Oscillator and a 7-Push Multiplier

링 발진기와 7-푸쉬 체배기 기반의 ×49 주파수 체배기

  • Received : 2015.10.14
  • Accepted : 2015.12.11
  • Published : 2015.12.31

Abstract

In this paper, a ${\times}49$ frequency multiplier based on a ring oscillator and a multi-push multiplier is presented. The proposed ${\times}49$ frequency multiplier consists of two ${\times}7$ frequency multipliers and these multiplier is connected by injection-locking technique. Each ${\times}7$ frequency multiplier consists of a ring oscillator with 14-phase output signal and 7-push frequency multiplier requiring 14-phase input. The proposed ${\times}49$ frequency multiplier provides 2.78~2.83 GHz output signal with 56.7~57.7 MHz input signal. This operation frequency is defined that the output power difference between the carrier and the spur is above 10 dB. The proposed chip consumes 13.93 mW.

Keywords

Frequency Multiplier;Injection-Locking;Multi-Push Multiplier;Ring Oscillator

References

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Acknowledgement

Supported by : 한국연구재단