Title :
A Novel Slots-and-Monopole Antenna with a Steerable Cardioid Pattern
Author :
Itoh, K. ; Cheng, D.K.
Author_Institution :
Syracuse University Syracuse, N.Y. 13210
fDate :
3/1/1972 12:00:00 AM
Abstract :
The outputs of a vertical monopole and two mutually perpendicular slots in a horizontal plane can be properly combined to yield a steerable cardioid-shaped pattern for vertically polarized waves. The required weighting factors for placing the pattern null in any desired direction are presented in graphical form. The shape and the half-power beamwidth of the steerable pattern are examined. This combination antenna unit offers important advantages in direction finding and other applications, especially at microwave frequencies.
Keywords :
Apertures; Cardiology; Directive antennas; Goniometers; Microwave antennas; Microwave frequencies; Polarization; Receiving antennas; Shape; Slot antennas;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.1972.309480