MICROSTRIP ANTENNA OF SPURIOUS WAVE SUPPRESSION

摘要

PURPOSE: A microstrip antenna is provided to be capable of minimizing an interference by suppressing radiant beams of a lateral direction and a back direction. CONSTITUTION: A plurality of radiation elements(20-1,...,20-m) are arranged on an entire surface of a substrate(10) in vertical and horizontal directions to radiate a radio wave. The first reflection plate(30) is spaced apart from the rear of the substrate and reflects radio waves radiated from the radiation elements. The second reflection plate(40) is spaced apart from the rear of the first reflection plate. A radio wave absorption material(50) is filled between the first and second reflection plates and absorbs radiant beams of a lateral direction and a back direction from the first reflection plate.