Title :
Ultrawideband Printed Log-Periodic Dipole Antenna With Multiple Notched Bands
Author :
Yu, Chao ; Hong, Wei ; Chiu, Leung ; Zhai, Guohua ; Yu, Chen ; Qin, Wei ; Kuai, Zhenqi
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
fDate :
3/1/2011 12:00:00 AM
Abstract :
A printed log-periodic dipole antenna (PLPDA) with multiple notched bands is proposed for ultrawideband (UWB) applications. The impedance bandwidth of 3.1 GHz-10.6 GHz with VSWR less than 2 is achieved based on the wideband property of the PLPDA as well as the half mode substrate integrated waveguide (HMSIW) Balun. Different from omnidirectional UWB antennas, the end-fire radiation pattern of the PLPDA is more stable within the UWB band. Multiple notched bands are generated by integrating U-shaped slots into the PLPDA for blocking the interference from other narrow band wireless communication systems. Several antennas with the notched frequencies of 3.5 GHz, 5.5 GHz, 6.8 GHz, and 8.5 GHz are designed, fabricated, and measured. The measured results are in agreement with the predicted results.
Keywords :
antenna radiation patterns; dipole antennas; interference suppression; microstrip antennas; microwave antennas; radio networks; slot antennas; ultra wideband antennas; ultra wideband communication; U-shaped slot integration; bandwidth 3.1 GHz to 10.6 GHz; end-fire radiation pattern; half mode substrate integrated waveguide balun; impedance bandwidth; multiple notched band; narrow band wireless communication system; omnidirectional UWB antenna; ultrawideband printed log-periodic dipole antenna; Half mode substrate integrated waveguide; multiple frequency notches; printed log-periodic antenna; ultrawideband;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2103010
