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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document : 9 / 28 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ¤§ÀÚÇü Back Plate¸¦ °¡Áø Áß°è±¹¾ÈÅ׳ªÀÇ ¼³°è¿¡ °üÇÑ ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) A Study on Design for Relay Station Antennas with U-shaped Back Plate Structure
ÀúÀÚ(Author) ¹Î°æ½Ä   ÀÓÁ¤³²   ±èµ¿ÀÏ   Á¤¼¼¸ð   À̵·½Å   Kyeong-Sik Min   Jeong-Nam Lim   Dong-Il Kim   Se-Mo Chung   Don-Shin Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 02 NO. 04 PP. 0643 ~ 0652 (1998. 12)
Çѱ۳»¿ë
(Korean Abstract)
À̵¿Åë½Å¿ë Áß°è¾ÈÅ׳ª´Â ÇöÀç ¾à -20 dBÀÇ ÈĹæºÎ¿±ÀÌ Á¸ÀçÇÑ´Ù. ÀÌ´Â ÀÎÁ¢ÇÑ ¾ÈÅ׳ª¿¡ ÀüÆÄ°¨¼è ¹× Àå¾Ö¸¦ ÀÏÀ¸Å°°í ÀÖ¾î ÈĹæºÎ¿±À» ¾ïÁ¦½ÃÅ°´Â °ÍÀÌ Àý½ÇÈ÷ ¿ä±¸µÇ°í ÀÖ´Ù. º» ³í¹®¿¡¼­´Â ±âÁ¸ÀÇ Back Plate ±¸Á¶¸¦ »õ·Ó°Ô º¯ÇüÇÏ¿© ÈĹæºÎ¿±ÀÇ ¹ß»ýÀ» ¾ï¾Ð½ÃÅ°°í, -30 dBÀÌÇÏÀÇ Null PointÀÇ °¢µµ¸¦ ³ÐÈ÷°íÀÚ ÇÑ´Ù. »õ·Î¿î ±¸Á¶ÀÇ Back Plate´Â ¸®Ç÷ºÅ;ÈÅ׳ªÀÇ ¿ø¸®¸¦ ÀÌ¿ëÇÏ¿© ¤§ÀÚ ÇüÅ·Π¸¸µé¾ú´Ù. Back Plate±¸Á¶ÀÇ ¼³°è¸¦ À§ÇØ ¹ü¿ë ¼ÒÇÁÆ®¿þ¾î ÅøÀÎ NEC Win Pro¸¦ »ç¿ëÇÏ¿´´Ù. °¢ ÆĶó¹ÌÅÍ¿¡ ´ëÇÑ °è»êÀ¸·ÎºÎÅÍ $pm180^circ$ ¼ö½Ä À̹ÌÁö¿¡¼­ -48.48 dB ÀÇ ÈĹæºÎ¿±À» °®´Â Áß°è±¹¾ÈÅ׳ª¸¦ ¼³°èÇÏ¿´À¸¸ç, ¶ÇÇÑ ´ÙÀÌÆúÀÇ ±æÀÌ, ´ÙÀÌÆú »çÀÌÀÇ °£°Ý ¹× Back Plate Å©±â µîÀÇ Á¶Á¤À¸·ÎºÎÅÍ -30 dBÀÌÇÏ¿¡¼­ 64$^{circ}$ ¼ö½Ä À̹ÌÁöÀÇ Null Point °¢µµ¸¦ °¡Áö´Â ¾ÈÅ׳ª¸¦ ¼³°èÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
This paper presents the characteristics of a relay station antenna with the newly designed back-plate structure which is composed of the U-shaped metal plate for suppression of the back lobe by edge diffraction. The back lobe level of the conventional type was about -20 dB in the -z direction ( 180 ) . In order to improve the characteristics, the U-shaped mesh type metal plate is considered, where the design condition of the model antenna satisfies the wide null point angle range with the back lobe level of -30 dB below in the -z direction. The design parameters with the minimum back lobe level such as the dipole length, the distance between dipole elements and the back plate size have been found by using the released NEC Win Pro code. The calculated and measured back lobe Bevel of model antenna have been obtained 48.48 dB and -45 dB at 325 MHz, respectively.
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