Journal of the Institute of Electronics and Information Engineers (전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A MedRadio-Band Low Power Low Noise Amplifier for Medical Devices

의료기기용 MedRadio 대역 저전력 저잡음 증폭기

  • Kim, Taejong (Dept. of Electronics Engineering, Kangwon National University) ;
  • Kwon, Kuduck (Dept. of Electronics Engineering, Kangwon National University)
  • 김태종 (강원대학교 전기전자공학부) ;
  • 권구덕 (강원대학교 전기전자공학부)
  • Received : 2016.07.18
  • Accepted : 2016.08.29
  • Published : 2016.09.25
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Abstract

This paper presents a MedRadio-band low power low noise amplifier for Medical Devices. A proposed MedRadio-band low power low noise amplifier adopts a current-reuse resistive feedback topology to increase overall gm and reduce power consumption. The gain of the LNA increases by the Q-factor of the additional series RLC input matching network, and its noise figure is minimized by the similar factor. Furthermore, it consumes low power because of low supply voltage and current reuse technique. By exploiting the $g_m$-booting and matching network property, the proposed MedRadio-band low noise amplifier achieves a noise figure of 0.85 dB, a voltage gain of 30 dB, and IIP3 of -7.9 dBm while consuming 0.18 mA from a 1 V supply voltage in $0.13{\mu}m$ CMOS technology.

본 논문에서는 의료기기용 MedRadio 대역의 저전력 저잡음 증폭기를 제안한다. 제안한 저잡음 증폭기는 전류 재사용 저항 피드백 증폭기 구조를 채택하여 $g_m$을 증폭시키고 소스 인덕터 없이 입력 매칭을 가능하도록 하였다. 추가적으로 제안한 직렬 저항, 인덕터, 커패시터 입력 매칭 네트워크의 Q-factor를 통해 저잡음 증폭기의 전압 이득을 증가시켜 잡음 지수를 최소화 했다. 로드저항이 없는 구조를 채택하여 낮은 전원 전압으로 전력 소모를 줄였다. 제안한 MedRadio 대역 저전력 저잡음 증폭기는 $0.13{\mu}m$ CMOS 공정을 사용하여 설계하였고, 전원 전압 1 V에서 0.18 mA의 전류를 소모하면서 0.85 dB의 잡음 지수, 30 dB의 전압 이득, -7.9 dBm의 IIP3의 성능을 보인다.

Keywords

References

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