中圖分類號： TN82 文獻(xiàn)標(biāo)識碼： A DOI：10.16157/j.issn.0258-7998.200891 中文引用格式： 孫南，聞志國,，姜帆,，等. 一種手持終端的470 MHz頻段IoT天線設(shè)計[J].電子技術(shù)應(yīng)用，2021,，47(1)：11-15. 英文引用格式： Sun Nan,，Wen Zhiguo，Jiang Fan,，et al. Design of a 470 MHz band IoT antenna for a handheld terminal[J]. Application of Electronic Technique,，2021，47(1)：11-15.
Design of a 470 MHz band IoT antenna for a handheld terminal
Sun Nan1,，2,，Wen Zhiguo1，2,，Jiang Fan1,，2，Li Yan1,，2,，Wang Yujing1，2,，Zou Jian1,，2，Song Ya1,，2
1.State Grid Key Laboratory of Power Industrial Chip Design and Analysis Technology, Beijing Smart-Chip Microelectronics Technology Co.,，Ltd.，Beijing 100192,，China,； 2.Beijing Engineering Research Center of High-reliability IC with Power Industrial Grade， Beijing Smart-Chip Microelectronics Technology Co.,，Ltd.,，Beijing 100192，China
Abstract： Many handheld terminal devices require a light and compact receiving and transmitting antenna. FPC antennas are popular among designers because of their light weight and thin thickness. In order to obtain an antenna with suitable size, bandwidth and gain, an FPC soft material is used as an integrated platform, and the transmission line and antenna are used as an integrated design. While maintaining the size of the antenna, the energy coupling of radiating unit is enhanced by adding coupling branches,，which effectively improves bandwidth and gain. The integrated design of transmission line and antenna can effectively use the antenna space and improve the port characteristics. Through simulation and actual testing, the antenna bandwidth meets 470 MHz~510 MHz, S11<-10 dB. S11<-12 dB at 490 MHz, the effective gain is 0 dBi.
Key words : coupling branches,；bandwidth；integration,；return loss
