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Á¦°³Á¤ÀÏ 2023-10-19 ÃÑ ÆäÀÌÁö 25
ÇÑ±Û Ç¥Áظí DFF ¹æ½ÄÀÇ ¾ç»ê¿ë FR2 OTA è¹ö(±â¼úº¸°í¼­)
¿µ¹® Ç¥Áظí FR2 OTA Chamber based on the DFF for Mass Production(Technical Report)
ÇÑ±Û ³»¿ë¿ä¾à FR2 ´Ü¸»ÀÇ ÀÎÁõ½ÃÇèÀº ¹Ð¸®¹ÌÅÍÆÄ ÁÖÆļö´ë¿ª°ú ±×¿¡ µû¸¥ ¾î·¹ÀÌ ¾ÈÅ׳ªÀÇ Æ¯¼º¿¡ µû¶ó OTA ÃøÁ¤¹æ¹ýÀ» »ç¿ëÇØ¾ß ÇÑ´Ù. 3GPP Ç¥ÁØ¿¡¼­´Â FR2 ´Ü¸»ÀÇ ÀûÇÕ¼ºÆò°¡ ½ÃÇèÀ» À§ÇÑ OTA ÃøÁ¤¹æ¹ýÀ¸·Î DFF (Direct Far Field), IFF (Indirect Far Field) ¹× NFTF (Near Field to Far field Transform) ¹æ½ÄÀ» Çã¿ëÇÏ°í ÀÖÀ¸¸ç, ³ôÀº »ç¿ëÁÖÆļö¿¡¼­ ¿ø°Å¸®Àå ȯ°æÀ» ÃæÁ·Çϱâ À§ÇÑ Á¶°ÇÀ» °í·ÁÇÏ¿´À» ¶§ ÃøÁ¤°Å¸®¸¦ ª°Ô ¼³°èÇÒ ¼ö ÀÖ´Â IFF ¹æ½ÄÀÇ CATR è¹ö°¡ ÀûÇÕ¼º½ÃÇè¿¡ »ç¿ëµÈ´Ù.
IFF ¹æ½ÄÀº FR2 ´Ü¸»ÀÇ ¾ÈÅ׳ª Å©±â¿Í À§Ä¡Á¤º¸¸¦ °í·ÁÇÏÁö ¾Ê´Â °æ¿ì¿¡ DFF ¹æ½Ä¿¡ ºñÇÏ¿© ÃøÁ¤°Å¸®¿¡ Å« ÀÌÁ¡ÀÌ ÀÖÁö¸¸ ¾ÈÅ׳ª Å©±â¿Í À§Ä¡Á¤º¸¸¦ »ç¿ëÇÏ´Â È­ÀÌÆ®¹Ú½º Á¢±Ù¹æ½ÄÀ» »ç¿ëÇÏ´Â °æ¿ì¿¡´Â DFF ¹æ½ÄÀÌ OTA ÃøÁ¤½Ã½ºÅÛÀÇ Å©±â¿Í ºñ¿ëÀý°¨¿¡ »ó´ëÀûÀÎ ÀÌÁ¡ÀÌ ÀÖ´Ù.
ÀÌ ±â¼úº¸°í¼­¿¡¼­ °í·ÁÇÏ´Â ¾ç»êȯ°æ¿¡¼­ ´Ü¸»ÀÇ ¼º´É °ËÁõÀ» À§ÇÑ OTA è¹öÀÇ °æ¿ì IFF ¹æ½ÄÀ» »ç¿ëÇÏ´Â CATR ½Ã½ºÅÛÀº ±Ô¸ð¿Í ºñ¿ëÀÇ Ãø¸é¿¡¼­ »ý»ê°úÁ¤¿¡ Àû¿ëÇϱ⠾î·Æ´Ù. ÀÌ·¯ÇÑ ´ÜÁ¡À» ÇØ°áÇϱâ À§ÇÏ¿© DFF ¹æ½ÄÀÇ ¾ç»ê¿ë OTA ÃøÁ¤½Ã¼³¿¡ ´ëÇÑ ±â¼úÀûÀÎ ³»¿ëÀ» Á¦¾ÈÇÏ°íÀÚ ÇÑ´Ù.
¿µ¹® ³»¿ë¿ä¾à The certification test of FR2 devices requires the use of OTA measurement methods according to the millimeter wave frequency band and the characteristics of the array antenna. The 3GPP standard allows DFF (Direct Far Field), IFF (Indirect Far Field), and NFTF (Near Field to Far field Transform) methods as OTA measurement methods for the conformance test of FR2 terminals, and the CATR chamber of the IFF method, which can be designed with a short measurement distance considering the conditions to meet the far field environment at high usage frequencies, is used for the conformance test.
The IFF method has a significant measurement distance advantage over the DFF method when the antenna size and location information of the FR2 device are not considered, but the DFF method has a relative advantage in reducing the size and cost of the OTA measurement system when using a white box approach that uses the antenna size and location information.
In the case of an OTA chamber for verifying the performance of a device in a mass production environment, which is considered in this paper, a CATR system using the IFF method is difficult to apply to the production process in terms of size and cost. To resolve these shortcomings, we propose the technical contents of a mass-production OTA measurement facility using the DFF method.
°ü·Ã IPR È®¾à¼­ Á¢¼öµÈ IPR È®¾à¼­ ¾øÀ½
°ü·ÃÆÄÀÏ    TTAR-06.0272.pdf TTAR-06.0272.pdf
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DFF ¹æ½ÄÀÇ ¾ç»ê¿ë FR2 OTA è¹ö(±â¼úº¸°í¼­) TTAR-06.0272 2023-10-19 Á¦Á¤ À¯È¿ ¾øÀ½ TTAR-06.0272.pdf