Title :
A Unidirectional Cylindrical Conformal Monopole Antenna Designed for Impulse Radar System
Author :
Li, Yan-Tao ; Yang, Xiao-Lin ; Li, Zhao-Bo ; Wang, Lei ; Yang, Hong-chun
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
7/3/1905 12:00:00 AM
Abstract :
A compact unidirectional cylindrical conformal monopole antenna with 40 mm diameter and 25 mm height is designed for an impulse radar system. The antenna is employed for radiating Gaussian monocycle with peak-peak width of 300 ps. Impedance loaded is adopted to achieve ultrawideband (UWB) impedance matching and unidirectional radiation. Simulations with CST Microwave Studio (CST MWS) and experiments have been conducted to assist with the characterization of the antenna. Simulation results and experimental data showed to be in good agreement. The impedance bandwidth is 0.67-2.15 GHz for S11 ≤ -10 dB and covers the main range of the pulse spectrum. The front-to-back ratio of the amplitude of the received signal reaches about 3.5:1.
Keywords :
conformal antennas; impedance matching; monopole antennas; radar antennas; ultra wideband antennas; CST Microwave Studio; bandwidth 0.67 GHz to 2.15 GHz; front-to-back ratio; impulse radar system; pulse spectrum; radiating Gaussian monocycle; size 25 mm; size 40 mm; time 300 ps; ultrawideband impedance matching; unidirectional cylindrical conformal monopole antenna; unidirectional radiation; Antenna measurements; Antenna radiation patterns; Dipole antennas; Loaded antennas; Transmitting antennas; Distance measurement; ultrawideband (UWB) antennas; ultrawideband radar; unidirectional radiation;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2178810
