ѧºÅ£º0908421076
±¾¿Æ±ÏÒµÂÛÎÄ£¨Éè¼Æ£©
(2013½ì)
µ÷Ƶ¹ã²¥°ËľÌìÏßÉè¼Æ
Ôº ϵ µç×ÓÐÅÏ¢¹¤³ÌѧԺ ר Òµ µç×ÓÐÅÏ¢¹¤³Ì ÐÕ Ãû ÐíÓ¨Ó¨ Ö¸µ¼½Ìʦ ÕÅÖÒÏé ºúÓ¢±ë
Ö° ³Æ ¸±½ÌÊÚ ¸ß¹¤
ºÏ·Êʦ·¶Ñ§Ôº2013½ì±¾¿ÆÉú±ÏÒµÂÛÎÄ£¨Éè¼Æ£©
µ÷Ƶ¹ã²¥°ËľÌìÏßÉè¼Æ
Õª Òª
ÌìÏßÊÇÒ»ÖÖÓÃÀ´·¢Éä»òÕß½ÓÊÕµç´Å²¨µÄÆ÷¼þ,ÆäÔÚÏÖ´úͨÐÅϵͳÖеÄ×÷Óò»¿É»òȱ£¬ÓÃÓÚÔ¶³Ìµ÷Ƶ¹ã²¥½ÓÊÕµÄÌìÏߴ󲿷ֲÉÓðËľÌìÏß¡£±¾Îĸù¾Ýµ÷Ƶ¹ã²¥µÄÖ¸±êÐèÇó£¬Ö÷ҪΧÈÆÌìÏßÀíÂÛÕ¹¿ª£¬Íê³É°ËľÌìÏßµÄÉè¼ÆºÍ²âÊÔ¡£
±¾ÎĵĵÚÒ»¸ö²¿·Ö±íÃ÷Á˸ÿÎÌâÑо¿µÄÏÖʵÒâÒåºÍ·¢Õ¹ÏÖ×´£¬ÏêϸµØ½éÉÜÁËÌìÏߵĻù±¾ÀíÂÛ£¬°üÀ¨ÌìÏߵĻù±¾¹¤×÷ÔÀí£¬ÌìÏßµÄÖ÷ÒªÌØÐÔ²ÎÊýµÈ£»±¾Îĵĵڶþ¸öÖ÷Òª²¿·ÖÊÇ°ËľÌìÏßµÄÀíÂÛ·ÖÎöÓëÉè¼Æ·ÂÕ棬Éè¼Æ³öÓÃÓÚ½ÓÊÕµ÷Ƶ¹ã²¥84.8MHzµÄ°ËľÌìÏß¡£ÔÚÉè¼Æ¹ý³ÌÖÐ̽ÌÖ°ËľÌìÏßµÄÉè¼Æ·½·¨£¬Í¨¹ý¶ÔÏà¹ØÐèÇóÌìÏߵķÖÎö£¬ÔËÓÃHFSSʵÏÖÌìÏߵķÂÕæºÍÓÅ»¯¡£
ͨ¹ýʵÎï²âÊÔ½á¹ûµÄ¶Ô±È£¬¸Ä½øÉè¼Æ·½°¸£¬ÓÅ»¯ÊäÈë×迹¡¢×¤²¨±È¼°´ø¿íµÈÌØÐÔ²ÎÊý£¬×îÖÕÍê³É·ûºÏÒªÇóµÄ°ËľÌìÏßÉè¼Æ¡£
¹Ø¼ü´Ê£º°ËľÌìÏß µ÷Ƶ¹ã²¥ HFSS פ²¨±È
I
ºÏ·Êʦ·¶Ñ§Ôº2013½ì±¾¿ÆÉú±ÏÒµÂÛÎÄ£¨Éè¼Æ£©
ABSTRACT
Antenna is an antenna for transmitting or receiving electromagnetic device, and it plays an important role in present communication system. Especially, is most often used to receive the remote FM radio. Based on the target of FM radio and antenna theory, we complete the design and test of Yagi antenna.
The first section shows that the significance of the research and the status of the development, and introduce in detail the basic theory of the antenna, including the basic principle, the main characteristic parameters and so on; The second main part of my work is the theory analysis of Yagi antenna and simulation design. Then, we design a Yagi antenna to receive FM 84.8. Yagi antenna design methods in the design process to explore, through the analysis of the relevant requirements antenna using HFSS simulation and optimization of antenna.
Compare with the results of the physical test, improve the design method and optimize the input impedance, VSWR and bandwidth characteristic parameters. Finally complete to the design of Yagi antenna, meeting the requirements
Key word: Yagi antenna FM radio HFSS VSWR
II
ºÏ·Êʦ·¶Ñ§Ôº2013½ì±¾¿ÆÉú±ÏÒµÂÛÎÄ£¨Éè¼Æ£©
Ŀ ¼
Ò» Ð÷ ÂÛ .............................................................................................. 1
1.1Ñо¿±³¾°¼°Ä¿µÄÒâÒå ........................................................................... 1 1.2¹úÄÚÍâÑо¿ÏÖ×´ ................................................................................... 1 1.3 ±¾ÎĵÄÄÚÈÝ°²ÅÅ .................................................................................. 2
¶þ ÌìÏߵĻù±¾ÀíÂÛ .............................................................................. 3
2.1 ÌìÏߵĸÅÊö .......................................................................................... 3
2.1.1 ÌìÏߵŦÄܼ°Ó¦Óà ..................................................................... 3 2.1.2 ÌìÏߵķÖÀà ................................................................................. 4 2.1.3 ÌìÏߵķ¢Õ¹Ê· ............................................................................. 4 2.2 »ù±¾ÔªµÄ·øÉä ...................................................................................... 4
2.2.1µç»ù±¾Õñ×ӵķøÉä ...................................................................... 5 2.2.2 ´Å»ù±¾Õñ×ӵķøÉä ..................................................................... 6 2.2.3 С»·ÌìÏߵķøÉä ......................................................................... 7 2.3 ÌìÏߵĻù±¾ÔÀíºÍÖ÷Òª²ÎÊý .............................................................. 7
2.3.1 ÌìÏߵŤ×÷ÔÀí ......................................................................... 7 2.3.2 ÌìÏßµÄÖ÷Òª²ÎÊý ......................................................................... 8 2.3.2ÌìÏßÆäËû¼¼ÊõÖ¸±ê .................................................................... 11 2.4 ½áÂÛ .................................................................................................... 12
Èý °ËľÌìÏߵķÖÎöÓëÉè¼Æ ................................ ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£
3.1 °ËľÌìÏß¼ò½éÓë·ÖÎö ....................................... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.2 °ËľÌìÏßÉè¼Æ ................................................... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£
3.2.1 ÒýÏòÆ÷µÄ¼ä¾àÑ¡Ôñ ................................... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.2.2 ·´ÉäÆ÷ÓëÓÐÔ´Õñ×ӵļä¾àÑ¡Ôñ ............... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.2.3 ÒýÏòÆ÷³¤¶ÈºÍ·´ÉäÆ÷³¤¶ÈµÄÑ¡Ôñ ........... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.2.4 ÎÞÔ´Õñ×Ӱ뾶ºÍÓÐÔ´Õñ×ӽṹ¼°³ß´çµÄÈ·¶¨´íÎó£¡Î´¶¨ÒåÊéÇ©¡£
3.2.5 ÔöÒæºÍÖ÷°ê¿í¶È¹ÀËã ............................... ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.3 ÏÖ´ú·ÂÕæ¼¼ÊõÔÚÌìÏßÉè¼ÆÖеÄÓ¦Óà ................ ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£ 3.4 °ËľÌìÏߵķÂÕæºÍʵÎïÖÆ×÷ ............................ ´íÎó£¡Î´¶¨ÒåÊéÇ©¡£
III