한국정보통신학회논문지 (Journal of the Korea Institute of Information and Communication Engineering)

  • 제8권5호
  • /
  • Pages.1120-1128
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  • 2004
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  • 2234-4772(pISSN)
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  • 2288-4165(eISSN)
한국정보통신학회 (The Korea Institute of Information and Commucation Engineering)
권호 표지

3차 혼변조 왜곡 특성이 우수한 K-band 상향변환기 설계

The Design of K-band Up converter with the Excellent IMD3 Performance

  • 정인기 (경남대학교 정보통신공학과) ;
  • 이영철 (경남대학교 정보통신공학과)
  • 발행 : 2004.08.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 우수한 OIP3(ouput intercept point) 특성을 가지는 평형전력증폭단을 설계하고 이를 적용하여 K-band 상향변환기를 설계 및 제작하였다. 상향변환기의 구성은 전력 증폭기단, 국부발진신호 제거필터, 주파수혼합기및 IF단으로 구성하였으며 RF 경로의 동작 유무를 판단하기 위한 국부 루프 경로와 출력 전력을 감시하기 위한 감시 단자로 구성하여 소요되는 전력을 예측하였다. K-대역 MMIC를 이용하여 평형전력증폭단을 제작하였으며 전력 예측값에 의하여 상향변환기를 설계 제작하였다. 설계된 상향변환기의 이득은 $40\pm$2dB, PldB는 29dBm의 특성을 가지며, OIP3는 37.25dBm의 높은 특성이 나타내었다. 특히 전력증폭단의 MMIC를 조정하여 30dB이상의 이득을 제어하였다. 본 논문에서 제작한 상향변환기는 PTP 및 PTMP용 트랜시버에 사용할 수 있으며, QAM 및 QPSK 변조방식을 이용하는 디지털 통신 시스템 및 BWA(Broad Wireless System)에도 적용할 수 있다.

In this paper, we has designed and implemented Up-converter for K-band with high IMD3 performance using balanced power amplifier. It is consisted of PA module and, Local Oscillator module with reject Filter, mixer module and If block, and Up-converter has a local loop path to decide whether it operate or not and has the sensing port to inspect output power level. According to the power budget of designed Up-converter, K-band balanced power amplifier was fabricated by commercial MMIC. Measurement results of up-converter show about 40dB Gain, PldB of 29dBm and OIP3 was 38.25dBm, that is good performance compared to power budgets. We has adjusted gate voltage of MMIC to control more than 30 dB gain. This up-converter was used in transceiver for PTP and PTMP, and applied to digital communication system that use QAM and QPSK modulation.

키워드

참고문헌

  1. Hossein Izadpanah, ' A Millimeter-Wave Broadband Wireless Access Technology Demonstrator for the Next-Genaration Internet Network Reach Extension,' IEEE Communication Magazine, pp140-145, Sep. 2001
  2. F. Adachi,' Evolution Broadband Wireless Systems,', IEEE, International Symposium on Wireless Personal Multimedia Communications, pp19-26, Oct. 2002
  3. Rger B. Marks,' The IEEE 802.16 Working Group on Broadband Wireless,' IEEE Network, pp 4-7, March/April 1999
  4. L.Ngoc and V. Leung,' Interactive Multive Satellite Access Comunications,' IEEE Comunication Magazine, pp78-85, July 2003
  5. Y. Rahayu, J. Din and T. Rachman., 'Optimised performance of a 23GHz transceiver system for point-to-point microwave link,' IEEE, International Conference on Communication Systems, Vol.2, pp1162-1165, Nov. 2002
  6. A. Paraboni G.Masjni and A Elia ,'The effect of precipitation on microwave LMDS networks-performance analysis using a physical raincell model,' IEEE Jour. of Selected Areas in Communications, Vol.20, No.3, pp615-619, April 2002 https://doi.org/10.1109/49.995520
  7. Thomas Merkle, A.Tessmann and S. Ramberger.,'Intercept Point of Ka-band GaAs Gigh Power Amplifiers,' IEEE MTT-S International Microwave Symposium Digest, pp453-456, June 2002
  8. F. Y. Colomb and A Platzker,' 2 and 4 watt Ka-band GaAs PHEMT power amplifier MMICs,' IEEE MTT-S , Microwave Symposium Digest, 2003 International Vol.2, pp843- 846, June 2003
  9. E.Sonmez, A. Trasser, K.B. Schad and H.Schumacher, 'A single-chip 24 GHz receiver front-end using a commercially available SiGe HBT foundry process,' IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, pp159-162 June 2002
  10. C. S. Aitchison, M. Mbabele and F. Ali, 'Improvement of Third-order Intermodulation Product of RF and Microwave Amplifiers by Injection,' IEEE Trans. on Microwave and Technique, Vol. 49, No.6, ppl148-1154, June 2001 https://doi.org/10.1109/22.925508
  11. Allen Katz,' Linearization Reducing Distortion in Power Amplifiers,' IEEE Microwave magazine Vol.2, No.4, pp37-49, Dec. 2002 https://doi.org/10.1109/6668.969934
  12. M. Faulkner,'Amplifier linearization using RF feedback and feedforward techniques,'IEEE Transactions on Vehicular Technology, Vol.47, No.1, pp209-215, Feb. 1998 https://doi.org/10.1109/25.661047
  13. A. H. Coskun and S. Demir.,' A mathematical characterization and analysis of a feedforward circuit for CDMA applications,' IEEE Transactions on Microwave Theory and Techniques, Vol.51,pp767-777, No.3, March 2003 https://doi.org/10.1109/TMTT.2003.808582
  14. I J.A. Sills and R.Sperlich,' Adaptive power amplifier linearization by digital predistortion using genetic algorithms,' IEEE Radio and Wireless Conference, RAWCON, pp229-232, Aug. 2002
  15. Abelardo Podcameni and C.R.Riback.,' An Amplifier Linearization Method based on a Quadrature Balance Structure,' IEEE Trans.on Broadcasting, Vol.48, No.2, pp158-162 June 2002 https://doi.org/10.1109/TBC.2002.1021282
  16. Thomas P. Weldon and Konrad Miehle.,' Using Amplifiers with Poor Linearity to Linearize Amplifiers with Good Linearity,' IEEE MTT-S Internation Microwave Symposium. pp1741-1743, June 2003
  17. S. Maas, Nonlinear Microwave Circuits, Norwood, MA: Artech House, 1988
  18. Behzad Razavi, RF Microelectronics, Upper Saddle River, NJ, Prentice-Hall, 1998