Miniaturized Antenna with High Radiation Efficiency Using Ground and Chip Capacitors

作者：Choi Hyengcheul; Jung Kyung Young; Kim Hyeongdong^*

来源：IEICE - Transactions on Communications, 2012, E95B(10): 3328-3331.

DOI：10.1587/transcom.E95.B.3328

• antenna
• size reduction
• ISM band
• mobile handset

Ground antennas are suitable for use in mobile electronic devices due to their compactness. These ground antennas incorporate two capacitors for controlling the resonance frequency and a shorting loop for impedance matching. In this work, we compare the performance of a ground antenna with that of a meandered inverted-F antenna (IFA). It is numerically and experimentally shown that a ground antenna can yield simultaneous improvements in both the antenna size and radiation efficiency when compared to the meandered IFA. The bandwidth of the ground antenna for a voltage standing wave ratio (VSWR) of 3:1 is 240 MHz from 2350 MHz to 2590 MHz, while the minimum total antenna efficiency is 62% within the 2.4 GHz ISM band.

• 出版日期2012-10