您現(xiàn)在的位置:  
 首 頁 > 天線設(shè)計(jì) > 天線設(shè)計(jì)問答 > RFID 美規(guī)頻段 指向性天線問題

RFID 美規(guī)頻段 指向性天線問題

文章來源: 互聯(lián)網(wǎng)    錄入: mweda.com   

請(qǐng)問尺寸長(zhǎng)55mm寬25mm高4mm做得出915MHz指向性天線嗎? 
本人用pifa設(shè)計(jì)....有指向性但增益很低(-10dBi) 
請(qǐng)問有人覺得這尺寸設(shè)計(jì)得出來嗎? 

網(wǎng)友回復(fù):

The wave length at UHF frequency band is about 300mm. So your antenna size is too small to get a good radiation efficiency. Try to enlarge your prototype.  
 
Normally, we can get 3-5 dBi for monopole structure and 2 dBi for dipole. So -10 dBi is too low to be put into implementation. 
 
Thank you

網(wǎng)友回復(fù):

 
英文看著很舒服

申明:網(wǎng)友回復(fù)良莠不齊,僅供參考。如需專業(yè)解答,請(qǐng)咨詢本站專家,或者學(xué)習(xí)本站天線設(shè)計(jì)視頻培訓(xùn)課程