¼®»ç, ¹Ú»ç ÇÐÀ§ ³í¹® ÀÛ¼º ¿ä·É
Âü°í¹®Çå: ÃæºÏ´ëÇб³ ´ëÇпø ÇÐÀ§ ³í¹® ÀÛ¼º ±ÔÁ¤
(2010)
1. ÇÐÀ§ ³í¹®ÀÇ ¸ñÀû
- ÇÐÀ§³í¹®: ¼®»ç/¹Ú»ç ÇÐÀ§¿¡ ¸Â´Â µ¶¸³ÀûÀÎ ¿¬±¸´É·ÂÀ» ½ÀµæÇÏ¿´À½À» ü°èÀûÀÎ ±Û·Î Ç¥ÇöÇÑ °á°ú¹°
- ¿ä±¸´É·Â:
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³í¹®Å׸¶ ¹®Á¦ ¼ö¸³, ¹®Á¦Çذá(¿¬±¸), ¿¬±¸°á°ú Á¤¸®/ºÐ¼® ´É·Â(»ç°í´É·Â)
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³í¸®¼ö¸³ ¹× Àü°³ ¼ø¼
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âÀÇ·Â, Á÷°ü·Â(intuition)
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°ü·ÃºÐ¾ß Àü¹®Áö½Ä
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°ü·ÃºÐ¾ß ¹®Çå(ÇмúÁö³í¹®, ÇÐÀ§³í¹®, ƯÇã, ±â¼úº¸°í¼) Á¶»çºÐ¼® ´É·Â
-
¹®Àå Ç¥Çö·Â
2. ÀÛ¹® ´É·Â
- ¸¹Àº ¿¬½ÀÀ» ÅëÇØ ±Û¾²´Â ´É·ÂÀÌ ¿¬¸¶µÊ.
- ±ÛÀ» ¾´ ÈÄ ¿©·¯ ¹ø ´Ùµë¾î¾ß ÇÔ.
- ÃæºÐÇÑ ½Ã°£ ¿©À¯¸¦ °¡Áö°í ÁýÁßÇÏ¿© ±ÛÀ» ½á¾ß ÇÔ.
3. ÁÁÀº ÇÐÀ§ ³í¹®À» ¾²·Á¸é
- ½Ã°£/³ë·Â ÅõÀÚ(commitment)
- µ¿±âºÎ¿©(motivation)
- Á¦3ÀÚ(Áöµµ±³¼ö)ÀÇ °ËÅä/Áöµµ
4. ÇÐÀ§ °ü·Ã À±¸®
- Ç¥Àý
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ŸÀÎÀÇ ¿¬±¸°á°ú/¼³°è/±¸Á¶ ÀÎ¿ë¾øÀÌ »ç¿ë ±ÝÁö
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ŸÀÎÀÇ ¹®Àå ±×´ë·Î »ç¿ë ±ÝÁö
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±âÁ¸ °á°ú¸¦ º¯ÇüÇÏ¿© »õ·Î¿î °á°úÀÎ °Íó·³ Á¦½Ã ±ÝÁö
4. ¿Ï·á ³í¹® »ùÇÃ
±è±â·Ï,
"Àü°è ¹× ÀÚ°è¸é ÃÖÀû µµÆÄ°ü º¥µå ¼³°è",
2010³â 2¿ù, ÃæºÏ´ëÇб³ ¼®»çÇÐÀ§³í¹®
Á¤¿ë¼±,
"RFID¿ë ±Ù°Å¸® ¾ÈÅ׳ª ¼³°è",
2015³â 2¿ù, ÃæºÏ´ëÇб³ ¼®»çÇÐÀ§³í¹®
5. ³í¹®ÀÇ ºÐ·®
¼®»ç 50-80ÂÊ, ¹Ú»ç 80-160ÂÊ
6. ÃÖÁ¾³í¹® Àμ⺻ Á¦Ãâ
ÇÐÀ§¼ö¿© 50ÀÏÀü±îÁö, ¿¬ÁúÇ¥Áö 4ºÎ(µµ¼°ü ÀÚ·áÁö¿ø°ú), °æÁúÇ¥Áö 2ºÎ(µµ¼°üÀÚ·áÁö¿ø°ú 1ºÎ, Çаú 1ºÎ), ÇÐÀ§³í¹®µð½ºÄÏ: 1°³(µµ¼°üÀÚ·áÁö¿ø°ú)
7. ÇÐÀ§ ³í¹® ¿öµå ÀÛ¾÷ ¾ç½Ä
ÃæºÏ´ëÇб³ ´ëÇпø ÇÐÀ§ ³í¹® ÀÛ¼º ±ÔÁ¤(2010)
ÂüÁ¶
8. ¼¼ºÎ ÀÛ¼º ¿ä·É
¤· ³»¿ë ÀÛ¼º
- ¿ä¾à¹®: ÃæºÏ´ë ÇÐÀ§³í¹®¿¡´Â ÇÑ±Û ¿ä¾à¹®Àº ¾ø°í ¿µ¹® ¿ä¾à¹®¸¸ ÀÖÀ½.
- ³»¿ëÀÇ Ã¼°è¼º ¹× Ãæ½Ç¼º: ³»¿ëÀ» ÀûÀýÈ÷ ¼³¸íÇÏ´Â µ¥¿¡ ¸¹Àº ³ë·ÂÀ» ±â¿ïÀÏ °Í. ³»¿ë ±¸¼º ¹× ¼³¸í ¼ø¼, °á°ú ±×·¡ÇÁ¿Í Ç¥¿¡ ´ëÇÑ ÀûÀýÇÑ ¼³¸í ¹× °á°ú ºÐ¼® µî¿¡ ÁÖÀÇÇÒ °Í
- ÇÑ±Û ¹®Àå·Â: ¸¹Àº ÇлýÀÌ ÇÑ±Û ¹®¹ý¿¡¼ ¿À·ù¸¦ ¹üÇÔ. °¡Àå ÈçÇÑ ¿À·ù´Â Ç¥ÇöÀÇ ºÎÀûÀý¼º, ÁÖ¾îÀÇ »ý·«, ÁÖ¾î¿Í µ¿»çÀÇ ºÒÀÏÄ¡ µîÀÓ. º»¹® ¹®ÀåÀ» 1Â÷·Î ÀÛ¼ºÈÄ ¿©·¯ ¹ø ´Ù½Ã ÀÐ°í ¼öÁ¤ÇÏ¿©
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- ¶ç¾î¾²±â: ¿¬½ÀÀÌ ºÎÁ·ÇÑ ÇлýÀº ¸¹Àº ¿À·ù¸¦ ¹üÇÔ.
- ¸ÂÃã¹ý ¹× ¿ÀŸ: ÇÑ±Û ¿öµåÇÁ·Î¼¼¼ ÇÁ·Î±×·¥ÀÇ ¸ÂÃã¹ý ±â´É »ç¿ë
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2-12GHz: ºÎÅÍ ±îÁöÀÇ Àǹ̷Π- »ç¿ë. 2~12GHz¿¡¼¿Í °°ÀÌ ~ »ç¿ëÇÏ Áö ¾ÊÀ½.
- ±×¸² Á¦¸ñ, Ç¥ Á¦¸ñ: ±¸Ã¼ÀûÀ¸·Î ³»¿ë¿¡ ÇÕ´çÇÑ Á¦¸ñ ºÎ¿©. ¸¹Àº ÇлýÀÌ ÀûÀýÇÏÁö ¾ÊÀº Á¦¸ñÀ» »ç¿ëÇÔ. ÇÑ±Û ¿öµåÇÁ·Î¼¼¼ÀÇ Ä¸¼Ç ±â´É »ç¿ëÇÏÁö ¸» °Í. ÆíÁý ¼öÁ¤½Ã ¸Å¿ì ºÒÆíÇÔ.
- Âü°í¹®Çå Ç¥±â:
...¿¬±¸ÇÏ¿´´Ù[3]. : ÀÎ¿ë¹øÈ£¿Í ¸¶Áö¸· ±ÛÀÚ »çÀÌ °ø°£ ¾øÀ½.
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- ¿øÄ¢ÀûÀ¸·Î ¼ö½ÄÀº ¾Æ·¡ ÇÑ±Û ¼ö½ÄÆíÁý±â »ç¿ë
- ¸Å¿ì º¹ÀâÇÑ ¼ö½ÄÀº MathTypeÀ¸·Î ¼ö½Ä ÀÛ¼ºÈÄ ±×¸²À¸·Î ÀúÀåÇÏ¿© »ðÀÔÇÔ.
- ¼ö½Ä¹øÈ£: (2.1)°ú °°ÀÌ Àå¹øÈ£¿Í ÀϷùøÈ£ Çü½Ä Àû¿ë. ¿À¸¥ÂÊ ¸ÂÃãÀ¸·Î Á¤·ÄÇÏ°í ¼ö½ÄÀº Ⱦ¹æÇâ Áß°£¿¡ ¿Àµµ·Ï ¼ö½Ä¹øÈ£¿Í ¼ö½Ä »çÀÌ¿¡ °ø¹é »ðÀÔ
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2.1.1
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- Âü°í¹®Çå Ç¥±â: ¾Æ·¡ ¼³¸í ÂüÁ¶. ²Ä²ÄÇϰí Á¤È®ÇÏ°Ô Ç¥±â¹æ½Ä Áؼö
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E- and H-plane Optimum Waveguide
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°øÇм®»çÇÐÀ§³í¹® Àü°è ¹× ÀÚ°è¸é ÃÖÀû µµÆÄ°ü º¥µå ¼³°è Design of E-
and H-plane Optimum Waveguide
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Design of E-
and H-Plane Optimum Waveguide
Bend Kim, Kirock Radio
Communications Engineering Track Dept. of Electrical,
Electronics, Information & Computer Engineering Graduate
School, Chungbuk National University Cheongju
City, Korea Supervised
by Professor Ahn, Bierng-Chearl Abstract |
¤· Abstract ÀÛ¼º¿ä·É: ´ÙÀ½
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Waveguide bends are widely used in constructing components
based on the metallic tube type transmission line. Although the direction of
bending can be arbitrary, right angle(90¡Æ) bends in E- or H-plane
are most frequently used. The purpose of this thesis is to investigate the
design of optimum E- and H-plane right-angle bends in the
rectangular waveguide. The bend considered in this thesis has an inner corner
formed by joining two waveguide walls at right angle and the outer corner with
circular, linear, or stepped shape. Dimensions of optimum bends are obtained
using a commercial electromagnetic software for the center frequency
(corresponding to the smallest reflection coefficient) ranging from from 1.1 to
1.9 times the waveguide cutoff frequency. Designed bends have a low reflection
coefficient over the entire operating frequency range of the rectangular
waveguide. Theoretical reflection and transmission coefficients of designed
bends are presented. Dimensions of optimum bends are given in terms of the waveguide
broad wall width so that they can be applied to bends in any standard
rectangular waveguide. To verify the accuracy of proposed designs, H-plane
stepped and circular bends are fabricated. Measurements of fabricated bends
show good agreements with simulation. The fabricated H-plane stepped
bend has a reflection coefficient less than -24dB and a transmission
coefficient greater than -0.2dB at 30-40GHz. The fabricated H-plane
circular bend has a reflection coefficient less than -30dB and a transmission coefficient
greater than -0.1dB at 30-40GHz.
List
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[2] D. L. Paul, I. J. Craddock and
C. J. Railton, "Simple and accurate hybrid model of uniform waveguide
bends", Electron. Lett., Vol. 40, Issue 4, pp. 1478-1479, Feb.
2004.
2) ´ÜÇົÀ̳ª
Çмú´ëȸ³í¹®ÁýÀÇ °æ¿ì
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[1] N. Marcuvitz, Waveguide
Handbook, New York: McGraw-Hill, 1951, pp. 100-102.
[2] S. F. Kulishenko and A. A.
Kirilenko, "Waveguide bend matched by the stepped miter", Proc.
Int. Conf. Antenna Tech., 12-14 Sep. 2003, pp. 767-768.
- ¹ßÇàÀÏÀÚ
1) Á¤±â°£Çà ÇмúÁöÀÇ
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¤· ÀÛ¼º
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[1] N. Marcuvitz, Waveguide Handbook, New York:
McGraw-Hill, 1951.
[2] D. M. Pozar, Microwave
Engineering, 3rd Ed., New York: Wiley, 2006.
- ̴˂
ÀϺÎ
[1] M. S. Lewis-Beck,
"France: The Stalled Electorate," Chp. 14 in R. Dalton et al. (Eds.): Electoral Change in Advanced Industrial Societies, Princeton, N. J.
: Princeton Univ. Press, 1984.
[2] I. Bleiklie,
"Forvaltningen og den enkelte", pp. 209-238 in L. H. Skare (Ed.): Forvaltningen i samfunnet, Oslo:
Tanum-Norli, 1979.
- ¿¬±¸º¸°í¼
[1] P. Gooderham, Erikson og Goldthiorpes Klasseinndeling:
Norwegian Version, Trondheim: Univ. of Trondheim, AVH, Dept. Sociology and
Political Science, ISS Rep. 41, 1994.
- ÇмúÁö
³í¹®
[1] D. L. Paul, I. J. Craddock and
C. J. Railton, "Simple and accurate hybrid model of uniform waveguide
bends," Electron. Lett., Vol. 40, No. 4, pp. 1478-1479, Feb. 2004.
[2] J. M. Reiter, F. Arndt,
"Rigorous analysis of arbitrarily shaped H- and E-plane discontinuities in
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pp. 796-801, Apr. 1995.
- Çмú´ëȸ
³í¹®
[1] S. F. Kulishenko and A. A.
Kirilenko, "Waveguide bend matched by the stepped miter," Dig. Int.
Conf. on Antenna Tech., 12-14 Sep. 2003, pp. 767-768.
[2] B. Enkhbayar, J. H. Bang, J.
S. Park, B. K. Joo, J. H. Chun, and B. C. Ahn, "Design of a stepped H-plane
bend in a rectangular waveguide," Proc. Int. Conf. Inform. Comm. Tech.,
5-7 Aug. 2009, pp. 90-92.
[3] Z. Ma, T. Yamane and E.
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