DOI QR코드

DOI QR Code

Design of Tilting Unit for Mobile Radio Communication Repeater

이동통신 중계기에 이용되는 틸팅유닛의 디자인

  • 이정현 (볼조 자동차(스웨덴)) ;
  • 박재원 (서울과학기술대학교 NID 융합기술 대학원 나노IT융합 프로그램)
  • Received : 2011.05.11
  • Accepted : 2011.11.26
  • Published : 2012.02.15

Abstract

Recently WCDMA signal transmission technology by large output microwave antenna have showed reduction of human resources and operating expense. But the existing antenna brackets cost is very expensive also its structure and functions are complicated. Unit brackets, suspending some sensors, subjected to acceleration loads, often fail due to self-vibration. To prevent such failures, it is necessary to understand the fatigue failure mode and to evaluate the fatigue life using tests or analysis techniques. The objective of this study is to develop the component test specifications, which are applicable to predict fatigue life at initial product design step, for unit brackets using vibration fatigue technique. So its application is limited to installation and management. In this project, we studied about more convenient bracket for microwave antennas through improvement on the existing antenna bracket's shortcoming and could develop an improved universal antenna bracket system for simple installation and application.

Keywords

References

  1. Ajay, R. M., 2000, Fundamentals of Cellular Network Planning and Optimisation, John Wiley & Sons, New York.
  2. Bo, G., Bo, H., Sven, P., and Joakim, S., 2000, "Advanced Antenna Systems for WCDMA: Link and System Level Results," The 11th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Vol. 1, pp. 62-66.
  3. Yoon, H. G., and Han. G. J., 2000, "A Study on the Design of Fabric of Automobile Based on an Analysis of Costumer's Sensibility," KSDC, Vol. 6, No. 2, pp. 469-483.
  4. Koo, S., 1999, "A Research for the Pattern of the Instrument Panel Design of Passenger Cars," Journal of Korea Society of Design Science, Vol. 12, No. 4, pp. 99-108.
  5. Bing, Y. H., 2008, "Car Design Process," Journal of the Korean Society of Automotive Engineers, Vol. 30, No. 5, pp. 36-38.
  6. Lee, Y. J., 2004, "Development of a Monolithic Apparatus for Degasing Aluminum Continuous Casting Molten Metal," A Treatise in the Spring Congress in 2004 by KSMTE, pp. 115-120.
  7. Park, Y. S., and Park, G. J., 1997, "A Development of Move Limit Strategy Based on the Accuracy of Approximation for Structural Optimization," Journal of the Korea Society of Mechanical Engineers, Vol. 21, No. 8, pp. 1218-1228.
  8. Kim, H. G., Yang, S. M., Noh, H. G., Nah, S. C., You, K. H., and Cho, N. I., 2003, "A Study on the Optimal Shape Design of 2-D Structures," KSMTE, Vol. 12, No. 2, pp. 9-16.
  9. Kim, H. G., Nah, S. C., Kim, S. C., Kang, Y. W., Yang, G. E., Lee, H. K., and Choi, M. C., 2004, "A Study on the Dynamic Analysis in the Shaft of Turbo-blower for Fuel Cell," KSMTE, Vol. 13, No. 1, pp. 81-87.
  10. Park, J. H., and Yoo, H. H., 1997, "Vibration Analysis and Experimental Study for Rotating Structures," KSME(A), Vol. 21, No. 2, pp. 272-280.
  11. Lee, B. C., and Oh, S, H., 1996, "A Study on the Development of an Efficient Subspace Iteration Method," KSME(A), Vol. 21, No. 11, pp. 1852-1861.
  12. Domkin, K., and Hattel, J. H., 2009, "Modeling of High Temperature and Diffusion-controlled Die Soldering in Aluminum High Pressure Die Casting," Journal of Materials Processing, Vol. 209, No. 8, pp. 4051-4061. https://doi.org/10.1016/j.jmatprotec.2008.09.031