Wedge feed system for wideband operation of microstrip antennas

DETAILED DESCRIPTION The wedge feed system for microstrip antennas is intended to allow a single microstrip antenna system with one common input to provide a wider bandwith than prior equivalent microstrip antenna systems.
The present microstrip antenna system uses a special wedge feed to obtain wide bandwidth operation.
The radiation element is photo-etched in the same manner as other microstrip antennas, and a wedge shaped feed is connected from the antenna radiation element to the center pin of the coaxial to microstrip adapter, which is mounted on the ground plane.
The angle of the taper of the wedge feed along with the distance between the bottom of the wedge and the ground plane provides impedance matching for the antenna.
Although a rigorus theory for the wedge feed system has not been developed, a simplified theory along with experimental studies has provided an insight into the effects of the more important parameters and has allowed judicious selection of these parameters in designing wide bandwidth microwave antennas.
It is an object of the invention, therefore, to provide a simplified system for wideband operation of microstrip antennas.
Another object of the invention is to provide a single microstrip antenna system with a single common input to provide a wider bandwidth than prior equivalent microstrip antenna systems.
Further it is an object of the invention to provide a special wedge feed system to obtain wide bandwith operation of microstrip antennas.
Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings wherein: