A NOVEL COMPACT ARCHIMEDEAN SPIRAL ANTENNA WITH GAP-LOADING

Qing Liu, Cheng-Li Ruan, Lin Peng, Wei-Xia Wu
2008 Progress In Electromagnetics Research Letters  
A novel compact Archimedean spiral antenna with gaploading is investigated in this paper. A circular frame sharing the same centre with the spiral elements introduces a capacitive gap. By adjusting the width of the gap and the width of the circular frame, the initial resonant frequency of the proposed antenna is shifted from 2.79 to 1.93 GHz. Compared with the traditional Archimedean spiral antenna with the same lowest operation frequency, the area of the proposed antenna can be reduced by more than 30simulated radiation pattern results.
doi:10.2528/pierl08032002 fatcat:nqszqh4ctrb7vjp4caioh37laq