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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 :

ÇѱÛÁ¦¸ñ(Korean Title) °íÁ¶ÆÄ ¾ïÁ¦ ÀÀ¿ëÀ» À§ÇÑ ±¤´ë¿ª Àú¿ª Åë°ú ÇÊÅÍ ¼³°è
¿µ¹®Á¦¸ñ(English Title) Design of Wideband Low Pass Filter for Harmonic Suppression Applications
ÀúÀÚ(Author) ¿©ÁØÈ£   ÀÌÁ¾ÀÍ   Junho Yeo   Jong-Ig Lee  
¿ø¹®¼ö·Ïó(Citation) VOL 22 NO. 01 PP. 0169 ~ 0174 (2018. 01)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â °íÁ¶ÆÄ ¾ïÁ¦ ÀÀ¿ëÀ» À§ÇÑ ±¤´ë¿ª Àú¿ª Åë°ú ÇÊÅÍ(low pass filter; LPF)¿¡ ´ëÇÑ ¼³°è ¹æ¹ý¿¡ ´ëÇÏ¿© ¿¬±¸ÇÏ¿´´Ù. Á¦¾ÈµÈ ±¤´ë¿ª LPF´Â µ¿ÀÏ¸é µµÆÄ°ü(coplanar waveguide; CPW)ÀÇ Á¢Áö¸é¿¡ ´ëĪÀûÀ¸·Î Ãß°¡ÇÑ 4°³ÀÇ Å©±â°¡ ´Ù¸¥ ¿øÇü ½½·Ô ½ÖÀ¸·Î ±¸¼ºµÈ´Ù. 4°³ÀÇ ¿øÇü ½½·Ô ½ÖÀº °áÇÔÁ¢Áö±¸Á¶ ¿ªÇÒÀ» ÇÏ¸ç ±¤´ë¿ª Àú¿ª Åë°ú Ư¼ºÀ» °¡Áø´Ù. Á÷°æÀÌ °¡Àå ÀÛÀº ¿øÇü ½½·ÔÀÌ Æ÷Æ® 1 Ãø¿¡ À§Ä¡ÇÏ°í Æ÷Æ® 2ÃøÀ¸·Î °¡¸é¼­ Á÷°æÀÌ Ä¿Áö´Â ÇüÅ·Π¹èÄ¡ÇÏ¿´´Ù. °¢°¢ÀÇ ¿øÇü ½½·ÔÀÇ Àú¿ª Åë°ú Ư¼ºÀ» Á¦¾ÈµÈ ±¤´ë¿ª LPF¿Í ºñ±³ÇÏ¿´´Ù. ÃÖÁ¾ ¼³°èµÈ LPF¸¦ FR4 ±âÆÇ »ó¿¡ Á¦ÀÛÇÏ°í Ư¼ºÀ» ½ÇÇèÇÑ °á°ú, ÃøÁ¤µÈ S11 Ư¼ºÀº 1.89—20.00 GHz ´ë¿ª¿¡¼­ –3.3 dB ÀÌ»óÀ» À¯ÁöÇÏ¿´°í, S21 Ư¼ºÀº 2.66—20.00 GHz ´ë¿ª¿¡¼­ –21.4 dB ÀÌÇϸ¦ À¯ÁöÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
In this paper, a design method for a wideband LPF for harmonic suppression applications is investigated. The proposed wideband LPF is comprised of four circular slot pairs with different diameters, which are added symmetrically in the ground plane of a CPW transmission line. Four circular slot pairs act as a defected ground structure and provide a wideband low pass characteristic. The circular slot with the smallest diameter is located at the side of port 1, and the diameter of the circular slot is increased as it goes toward port 2. The low pass characteristics of each circular slot are compared with the proposed wideband LPF. The final designed LPF was fabricated on FR4 substrate, and its characteristics were tested. The measured S11 characteristic was maintained at over –3.3 dB in the frequency range of 1.89—20.00 GHz band, whereas the S21 characteristic was less than –21.4 dB in the frequency range of 2.66—20.00 GHz.
Å°¿öµå(Keyword) Àú¿ª Åë°ú ÇÊÅÍ   ±¤´ë¿ª   °íÁ¶ÆÄ ¾ïÁ¦   °áÇÔ Á¢Áö ±¸Á¶   ¿øÇü ½½·Ô ½Ö   Low pass filter(LPF)   Wideband   Harmonic suppression   Defected ground structure   DGS   Circular slot pair  
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