Electrically Small Antenna with Bandwidth over 2/Q Limit
2/Q 대역폭 한계치를 넘는 소형 안테나 설계
- Lee, Chul-Hee (School of Electronic and Electrical Engineering, Hongik University) ;
- Choo, Ho-Sung (School of Electronic and Electrical Engineering, Hongik University) ;
- Park, Ik-Mo (Department of Electrical and Computer Engineering, Ajou University)
- Published : 2005.11.05
In this paper, we verify that the bandwidth of the optimized disk-loaded monopole antenna with electromagnetically coupled feed obtained using a genetic algorithm is broader than the theoretical bandwidth limit of 2/Q by simulation as well as by measurement. The measured bandwidth of the optimized antenna (kr : 0.599) is about 42% from 380 MHz to 580 MHz (VSWR<5.8). The efficiency measurement of the antenna is over 90% for the frequency band of operation.