| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dual strip multi-frequency antenna which is improved in bandwidth and radiation characteristics. Ž<P>SOLUTION: A first strip 404 is electrically connected to a second strip 408 at one end. A coaxial signal feed 416 is coupled to a duplex strip antenna 400. The duplex strip antenna 400 provides an increase and bandwidth over conventional microstrip patch antenna 200, which is made possible by operating the dual strip antenna 400 as an open-ended parallel plate waveguide having asymmetrical conductor terminations. The operation of the dual strip antenna 400 as an open-ended parallel plate waveguide is achieved by selecting appropriate dimensions for the lengths and widths of the first and second strips 404, 408. Antenna compactness and a greater variety of useful shapes allow the dual strip antenna 400 to be used as an internal wireless device antenna. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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