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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 : 5 / 20 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) MB-OFDM ¹æ½ÄÀÇ UWB ½Ã½ºÅÛÀ» À§ÇÑ Fast-Hopping ÁÖÆļö ÇÕ¼º±âÀÇ À¯Çüº° ¼³°è ¹× ºñ±³
¿µ¹®Á¦¸ñ(English Title) Design and Comparison of the Fast-Hopping Frequency Synthesizers for MB-OFDM UWB Systems
ÀúÀÚ(Author) ÀÌÀç°æ   ¹ÚÁرԠ  ¹ÚÁ¾Å   À¯Á¾±Ù   Jae-Kyoung Lee   Joon-Kyu Park   Jong-Tae Park   Chong-Gun Yu  
¿ø¹®¼ö·Ïó(Citation) VOL 10 NO. 12 PP. 2264 ~ 2270 (2006. 12)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â MB-OFDM ¹æ½ÄÀÇ UWB ½Ã½ºÅÛ ÀÀ¿ëÀ» À§ÇÑ fast-hopping ÁÖÆļö ÇÕ¼º±âµéÀ» ¼³°èÇÏ¿´´Ù ¼¼ °³ÀÇ Á᫐ ÁÖÆļö(3432MHz, 3960MHz, 4488MHz) »ý¼ºÀÌ ÇÊ¿äÇÑ ÁÖÆļöÇÕ¼º±â¸¦ ¼¼ °¡Áö ±¸Á¶·Î °¢°¢ ¼³°èÇÏ°í ¼º´ÉÀ» ºñ±³ÇÏ¿´´Ù. ù ¹ø° ±¸Á¶´Â 4224MHzÀÇ ÁÖÆļö¿¡¼­ µ¿ÀÛÇÏ´Â ´ÜÀÏ PLLÀ» »ç¿ëÇÏ¿© ¼¼ °³ÀÇ Á᫐ ÁÖÆļö¸¦ ÇÕ¼ºÇÏ°í, µÎ ¹ø° ±¸Á¶´Â °¢°¢ÀÇ Á᫐ ÁÖÆļö¿¡¼­ µ¿ÀÛÇÏ´Â ¼¼ °³ÀÇ PLLÀ» »ç¿ëÇÑ´Ù. º» ³í¹®¿¡¼­ Á¦¾ÈµÈ ¼¼ ¹ø° ±¸Á¶´Â 3960MHz¿Í 528MHz¿¡¼­ µ¿ÀÛÇÏ´Â µÎ °³ÀÇ PLLÀ» »ç¿ëÇÏ¿© ¿øÇÏ´Â ÁÖÆļö¸¦ ÇÕ¼ºÇÑ´Ù. 0.18um RF CMOS °øÁ¤º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© ¸ðÀǽÇÇè ÇÑ °á°ú ¼¼ ¹ø° ±¸Á¶°¡ ´Ù¸¥ ±¸Á¶¿¡ ºñÇØ switching time, spur, Ĩ ¸éÀû ¹× Àü·ù ¼Ò¸ð ¸é¿¡¼­ ÁÁÀº Ư¼ºÀ» º¸ÀδÙ. Á¦¾ÈµÈ ¼¼ ¹ø° ±¸Á¶ÀÇ ÁÖÆļö ÇÕ¼º±â´Â 1.3ns ÀÌÇÏÀÇ band switching Ư¼º°ú -36dBc ÀÌÇÏÀÇ spurƯ¼ºÀ» º¸À̸ç 1.8V °ø±ÞÀü¿ø ÇÏ¿¡¼­ 22mAÀÇ Àü·ù¸¦ ¼Ò¸ðÇÑ´Ù.
¿µ¹®³»¿ë
(English Abstract)
This paper describes fast-hewing frequency synthesizers for multi-band OFDM(MB-OFDM) ultra-wide band(UWB) systems. Three different structures in generating 3 center frequencies(3432MHz, 3960MHz, 4488MHz) are designed and compared. The first structure generates 3 center frequencies using only one PLL operating at 4224MHz, and the second uses three PLLs operating at corresponding center frequencies. The proposed third structure employes two PLLs operating at 3960MHz and 528MHz. Simulation results using 0.18um RF CMOS process parameters show that the third structure exhibits boner characteristics in spur, area and current consumption than the other structures. The band switching time of the proposed synthesizer is less than 1.In and the spur is less than -36dBc. The synthesizer consumes 22mA from a 1.8V supply.
Å°¿öµå(Keyword) UWB   Frequency Synthesizer   PLL   VCO  
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