SHARED FREQUENCY MICROSTRIP ANTENNA

摘要

PROBLEM TO BE SOLVED: To design 1st and 2nd radiation elements independently by eliminating the deterioration in a radiation pattern or the like of the 2nd radiation element. ;SOLUTION: The shared frequency microstrip antenna is formed by laminating a common ground conductor 3a, a dielectric board 4b, a 2nd radiation element conductor 2, a frequency selection board 5, a ground conductor 3b for an upper MSA, a dielectric board 4a, and a 1st radiation electrode conductor 1 sequentially. A feeder 6a is connected to the 1st radiation element conductor 1 and a feeder 6b is connected to the 2nd radiation element conductor 2. The frequency selection board 5 reflects a radio wave at the operating frequency of the 1st radiation element conductor 1 and transmits it at the operating frequency of the 2nd radiation element 2. In other words, the frequency selection board 5 is operated at the frequency of the 1st radiation element conductor 1 but not operated at the frequency of the 2nd radiation element conductor 2.;COPYRIGHT: (C)1997,JPO