Title :
Surface micro-machined wideband circularly polarized antenna array for 60GHz radios
Author :
Xiuping Li ; Hua Zhu ; Nan Li ; Bo Ai ; Yang Tian ; Hong Wang
Author_Institution :
Scool of Electron. Eng., Univ. of Posts & Telecommun., Beijing, China
Abstract :
A 60GHz wideband circularly polarized E-shaped patch antenna array is designed using surface micromachining. The E-shaped patch is fully utilized to obtain good circular polarization performance. The antenna array is excited by four-way power divider. The four-way power divider is designed using rectangular micro-coaxial transmission line. The antenna array with the specified size of 12.5mm×5.7mm×0.62mm and bandwidth shows around 8GHz (59~67GHz) under the condition of voltage standing wave ratio (VSWR) less than 2, axial-ratio bandwidth was 11.1% (58.6~65.5 GHz), respectively. Gain of the antenna array is up to 13.3 dBi gain at 63GHz, and the efficiency is 90%.
Keywords :
antenna radiation patterns; broadband antennas; coaxial cables; micromachining; microstrip antenna arrays; millimetre wave antenna arrays; power dividers; transmission lines; VSWR; axial-ratio bandwidth; efficiency 90 percent; four-way power divider; frequency 60 GHz; frequency 63 GHz; rectangular microcoaxial transmission line; surface micromachined wideband circularly polarized antenna array; voltage standing wave ratio; wideband circularly polarized E-shaped patch antenna array; Antenna arrays; Arrays; Bandwidth; Broadband antennas; Power transmission lines; E-shaped patch; antenna array; axial ratio; circular polarization; surface micromachining rectangular micro-coaxial transmission line;
Conference_Titel :
Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-4355-5
DOI :
10.1109/APCAP.2014.6992720
