Wideband Microstrip Leaky-Wave Antenna for 4G LTE

• Main Authors: Ching-Chih Su, 蘇敬智
• Other Authors: Jui-Ching Cheng
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/n348tq

碩士 === 國立臺北科技大學 === 電子工程系研究所 === 105 === This paper describes a broadband microstrip leaky wave antenna for 4G LTE frequency bands : LTE 700 MHz、GSM 850 MHz、900 MHz、LTE 1500 MHz、1700 MHz、GSM 1800 MHz、1900 MHz、UMTS and LTE 2500 MHz、3500 MHz . The proposed antenna covers the frequency range from 0.7 GHz to 4 GHz for future frequency band expansion. The antenna design uses half-width microstrip structure to replace the traditional complex full width structure requiring differential excitation circuit. This proposed half width structure consists of long rectangular microstrip with short circuits formed by a series of metal via holes between the microstrip and the ground plane periodically. The measurement results show that maximum peak realized gain of 7 dBi is achieved. Measured return loss of antenna is larger than 6 dB in the operating bandwidth, and the low frequency band is relatively broad compared to the conventional microstrip leaky wave antenna.