Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Design of 2-stage LNA of LNB module for Ku-band

Ku-Band 위성통신용 LNB 수신단의 2단 LNA 설계

  • Kwak, Yong-Soo (School of Electrical & Electronics Engineering, Chungang Univ.) ;
  • Kim, Hyeong-Seok (School of Electrical & Electronics Engineering, Chungang Univ.)
  • 곽용수 (중앙대학교 전자전기공학부) ;
  • 김형석 (중앙대학교 전자전기공학부)
  • Published : 2005.07.18
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Abstract

In this paper, a low noise amplifier(LNA) in a receiver of a Low Noise Block Down Converter (LNB) for direct broadcasting service(DBS) is implemented using GaAs HEMT. The LNA is designed for the bandwidth of 11.7GHz-12.2GHz. The 2stage-LNA consists of a input matching circuit, a output matching circuit, DC-blocks and RF-chokes. The result of a simulation of the LNA using Advanced Design System(ADS) shows the noise figure less than 1.4dB, the gain greater than 23dB and the flatness of 1dB in the bandwidth of 11.7 to 12.2GHz.

Keywords