Phase Array Antennas Based on Substrate Integrated Waveguides for 5th-Generation Mobile Systems

• Main Authors: WU, JIAN-YI, 吳建逸
• Other Authors: WU, JANNE-WHA
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/11477651403052714160

碩士 === 國立中正大學 === 電機工程研究所 === 104 === In this thesis, the phased array antennas applicable for fifth generation (5G) mobile systems are designed and implemented. The substrate-integrated waveguide (SIW) structures are chosen for circuit implementation. Based on the 5G radio prototype implemented by Ericsson, the target operation frequency of the proposed phased array antennas is selected at 15 GHz. The classical slotted SIW array is utilized as the antenna element. Moreover, to filter out the interfering signals in the frontend, the SIW bandpass filter (BPF) are easy to be integrated with antenna is designed. In order to meet the system specification, the eight antenna elements integrated with BPFs constitute the 1×8 array antenna to enhance the beam directivity and increase the antenna gain. The scanning element array pattern measurement approach is adopted to synthesize the array pattern. By individually measuring the gain and phase patterns of each element among the array, the array gain pattern can be synthesized by calculation. The synthesis results agree quite well with the EM simulated results while the synthesized peak array gain is around 15.6 dBi. Besides, to observe the beam scanning range, the phase difference between adjacent elements could be adjusted from −160o to +160o and the corresponding beam directions are scanned from +58o to −58o, respectively. The beam scanning range convers around 116o and the related gains at scanning edge (58o) are around 12.5 dBi. Finally, to verify the synthesis results, a 1 to 8 power divider is used to feed the array antenna and the gain patter is measured. The obtained measured result shows good agreement with both synthesis and EM simulated results.