Trapezoid-shaped planar antenna

摘要

The antenna is formed on a substrate surface and has a trapezoidal harmonic oscillator. The bottom part of a rectangular-shaped load is connected with the bottom part of the oscillator trapezium. The top part of the rectangle is symmetrical with the harmonic oscillator trapezium. A gradually changing band section has a width which is the same as the bottom of the trapezium, with which it is connected. A feed-in transmission line has a width which is the same is as that of the bottom of the gradually changing band to which it is connected.