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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) Ku ´ë¿ª¿ë ÁÖÆļöº¯È¯±âÀÇ ±¸Çö
¿µ¹®Á¦¸ñ(English Title) Implementation of Down Converter for Ku-Band Application
ÀúÀÚ(Author) Á¤µ¿±Ù   ±è»óÅ   ÇÏõ¼ö   Dong-Keun Jung   Sang-Tae Kim   Cheun-Soo Ha  
¿ø¹®¼ö·Ïó(Citation) VOL 04 NO. 03 PP. 0527 ~ 0536 (2000. 09)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â ¸¶ÀÌÅ©·ÎÆÄ¿ëÀÇ Àü°èÈ¿°ú Æ®·£Áö½ºÅ͸¦ »ç¿ëÇÑ ÀúÀâÀ½ ÁÖÆļö º¯È¯±âÀÇ ¼³°è¿¡ ´ëÇÏ¿© ³íÀÇÇÑ´Ù. ³ôÀº ¾ÈÁ¤µµÀÇ À¯Àüü°øÁø±â¸¦ »ç¿ëÇÏ¿´°í Áß°£ÁÖÆļö´Ü¿¡¼­ ºÒÇÊ¿äÇÑ ¹ßÁøÀ» ¸·±â À§ÇØ ´ë¿ªÅë°ú ¿©Æı⸦ »ç¿ëÇÏ¿´´Ù. °øÁø ÁÖÆļö°¡ 12.3GHzÀÎ ¸¶ÀÌÅ©·Î½ºÆ®¸³ ¾ÈÅ׳ª¸¦ ¹Í¼­¿Í ÇÔ²² µ¿ÀÏÇÑ ±âÆÇ À§¿¡ ÁýÀû½ÃÄ×À¸¸ç °íÀüÀÚ À̵¿ Æ®·£Áö½ºÅÍ 3°³¸¦ »ç¿ëÇÑ ÀúÀâÀ½ ÁõÆø±â¸¦ ¾ÈÅ׳ª µÚ¿¡ ºÎ°¡ÇÏ¿´´Ù. ±¹ºÎ¹ßÁø±âÀÇ Ãâ·ÂÁÖÆļö´Â Ku ´ë¿ª¿ëÀ¸·Î¼­ 11.3GHz·Î ÇÏ¿´´Ù. ÃøÁ¤°á°ú 12.0GHz¿¡¼­ 12.7GHz¿¡ °ÉÃÄ ¾à 7¢¦12dBÀÇ À̵æÀ» º¸¿´À¸¸ç, Áß°£ÁÖÆļö´Ü¿¡¼­ÀÇ ÀâÀ½Áö¼ö´Â 6dBÀ̾ú´Ù. ¼³°èµÈ ¸ðµ¨Àº ´ÙÀÌ¿ÀµåÇü ¹Í¼­¿¡ ºñÇØ º¯È¯¼Õ½ÇÀÌ Àû¾úÀ¸¸ç, µðÁöÅÐ ¹æ¼Û ¹× Åë½Å½Ã½ºÅÛ¿¡ Àû¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
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(English Abstract)
This paper discusses the design of self-oscillating mixer type low noise down converter using the microwave field effect transistor. The mixer is consists of local oscillator in which high stability dielectric resonator and band pass filter to get rid of spurious oscillation at intermediate frequency stage. The microstrip antenna was integrated in the same substrate which generate 12.3GHz and low noise amplifier was also added after antenna using 3 stage of high electron mobility transistors. The output frequency from the local oscillator was chosen as 11.3GHz for the Ku-band application. The measured phase noise was -804dBc/Hz at 100kHz offset frequency, and the gain was 7¢¦12dB in frequency range from 12.0GHz to 12.7GHz. The noise figure at intermediate frequency stage was 64H. The designed model shows less conversion loss than previous diode type mixer. The proposed mixer can be used in digital satellite broadcasting and communication system and expected to use in next generation low noise block design.
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