Title :
Design of a bandwidth extended and compact microstrip antenna based on CRLH TL with slot loaded
Author :
Gou, Yuanxiao ; Wu, Qun ; Hua, Jun
Author_Institution :
Sch. of Electron. & Inf. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
This paper presents the design and analysis of a bandwidth extended and compact antenna based on CRLH TL (Composite Right/Left Handed Transmission line) with slot loaded. The CRLH TL is realized by the periodic placed EBG (Electromagnetic Band Gap) unit, the patch and the probe can be regarded as the series capacitance and shunt inductance respectively. Then the microstrip antenna is supposed to resonant in some certain conditions. Combine the left handed resonance frequency with the extra resonance mode, which is stimulated by the loaded of the slots, the bandwidth of the antenna can be extended efficiently. The full-analysis of the antenna is simulated. And the results show that the relative operation frequency bandwidth of the proposed antenna is 9.3% and the overall size of the antenna is only a quarter of wavelength. Besides, the radiation pattern of the antenna in the entire impedance matching band keeps unchanged, which means the radiation bandwidth is in step with the impedance bandwidth.
Keywords :
antenna radiation patterns; microstrip antennas; photonic band gap; slot antennas; CRLH TL; EBG; antenna radiation patterns; compact microstrip antenna; composite right-left handed transmission line; electromagnetic band gap; impedance matching; series capacitance; shunt inductance; slot loaded antenna; Antenna radiation patterns; Bandwidth; Microstrip; Microstrip antennas; Resonant frequency; CRLH TL; bandwidth extended; compact; microstrip antenna; slots loaded;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
