Title :
Circular Aperture Slot Antenna With Common-Mode Rejection Filter Based on Defected Ground Structures for Broad Band
Author :
Colin-Beltran, E. ; Corona-Chavez, A. ; Itoh, Takayuki ; Mendoza-Torres, J.E.
Author_Institution :
Inst. Nac. de Astrofis., Opt. y Electron. (INAOE), San Andres Cholula, Mexico
fDate :
5/1/2013 12:00:00 AM
Abstract :
A novel system composed of a circular aperture slot antenna and a Common-Mode (CM) noise rejection filter is presented. This antenna is differentially fed by microstrip coupled transmission lines. In order to eliminate CM noise, a notch filter based on three non-periodical defected ground structures (DGS) was implemented. The whole system achieves a fractional impedance bandwidth of about 127%. Radiation patterns in E and H planes for different frequencies were obtained for the system. Finally, measurements in the transversal plane show attenuation up to 13 dB when the system with filter was compared against one without it. Good agreement between simulated and measured results can be observed.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; microstrip antennas; microstrip filters; microstrip lines; notch filters; slot antennas; CM noise rejection filter; DGS; E planes; H planes; circular aperture slot antenna; common-mode noise rejection filter; defected ground structures; microstrip coupled transmission lines; notch filter; radiation patterns; transversal plane; Antenna measurements; Antenna radiation patterns; Matched filters; Noise; Ports (Computers); Transmission line measurements; Transversal filters; Microstrip antennas; microwave filters; noise measurements;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2013.2246535
