A Directive Subminiature Antenna for High-Power Ultrawideband Pulse Radiation

作者：Kim Jae Sik^*; Yoon Young Joong; Kwon Hae Ok; Ryu Jiheon; Choi Jin Soo

来源：IEEE Antennas and Wireless Propagation Letters, 2014, 13: 1565-1568.

DOI：10.1109/LAWP.2014.2346510

• Directive antennas
• electromagnetic pulse
• high-power radiation
• ultrawideband antennas

This letter presents a compact directive antenna to radiate a high-power ultrawideband (UWB) pulse. The proposed antenna is composed of a modified biconical-based radiator (electric dipole), magnetic dipoles, a feedthrough insulator, and a coaxial cable. The electrical size of the antenna is 0.195 lambda(L) x 0.195 lambda(L) x 0.176 lambda(L) (width x height x length), where lambda(L) is the wavelength corresponding to the lowest frequency of the bandwidth. The fabricated antenna realizes a bandwidth of 0.207-2.60 GHz (12.56:1) and a far-voltage of 131.3674 kV with a front-back ratio of 22.72 dB. The antenna is designed to radiate a +/- 75 kV amplitude bipolar pulse with a 0.83-ns pulse width through the frequency band from 0.207 to 2.33 GHz.

• 出版日期2014