대한전자공학회논문지SD (Journal of the Institute of Electronics Engineers of Korea SD)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

WLAN 및 Mobile WiMAX를 위한 2.3-2.7 GHz 대역 이중모드 CMOS RF 수신기

A 2.3-2.7 GHz Dual-Mode RF Receiver for WLAN and Mobile WiMAX Applications in $0.13{\mu}m$ CMOS

  • Lee, Seong-Ku (Dept. of Wireless Communications Engineering, Kwangwoon University) ;
  • Kim, Jong-Sik (Dept. of Wireless Communications Engineering, Kwangwoon University) ;
  • Kim, Young-Cho (Dept. of Wireless Communications Engineering, Kwangwoon University) ;
  • Shin, Hyun-Chol (Dept. of Wireless Communications Engineering, Kwangwoon University)
  • 발행 : 2010.03.25
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초록

IEEE 802.11n 기반 무선 LAN과 IEEE 802.16e 기반 Mobile WiMAX에 적용할 수 있는 이중모드 직접 변환 수신기를 $0.13\;{\mu}m$ RF CMOS 공정을 이용하여 설계하였다. 설계된 직접 변환 수신기는 2.3-2.7 GHz의 주파수 범위에서 동작을 한다. 저잡음 증폭기에 Current Steering 기술을 사용하여 전체 이득의 크기를 3 단계로 조절이 가능하게 하였다. 플리커 잡음 영향을 낮추기 위해 믹서에 Current Bleeding 기술을 사용하였다. 믹서 LO를 위한 I/Q 위상 신호 발생을 위해 주파수 2-분주회로를 포함하였다. 제작된 직접 변환 수신기는 1.4V의 공급 전원에서 LO 버퍼를 포함하여 56 mA를 사용하며, 32 dB의 전력이득과 4.8dB의 잡음지수, 그리고 +6 dBm의 출력 $P_{1dB}$를 가진다.

A dual-mode direct conversion receiver is developed in $0.13\;{\mu}m$ RF CMOS process for IEEE 802.11n based wireless LAN and IEEE 802.16e based mobile WiMAX application. The RF receiver covers the frequency band between 2.3 and 2.7 GHz. Three-step gain control is realized in LNA by using current steering technique. Current bleeding technique is applied to the down-conversion mixer in order to lower the flicker noise. A frequency divide-by-2 circuit is included in the receiver for LO I/Q differential signal generation. The receiver consumes 56 mA at 1.4 V supply voltage including all LO buffers. Measured results show a power gain of 32 dB, a noise figure of 4.8 dB, a output $P_{1dB}$ of +6 dBm over the entire band.

키워드

참고문헌

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