| 摘要 |
PROBLEM TO BE SOLVED: To prevent the distortion of a signal waveform when wirelessly transmitting the rectangular waves of digital signals directly. SOLUTION: The planar antenna system comprising a grounding conductor 11 with a rectangular slot 11c and a dielectric substrate 10 is provided with notched parts 11a and 11b having a size equal to or less than 1/6 at the fundamental frequency of a resonance electromagnetic field generated in the planar antenna system for extending the rectangular slot 11c, and by controlling the distribution of a leakage electric field by the resonance structures and attenuating the fundamental harmonic components of the rectangular waves of the digital signals, the waveform distortion is reduced. COPYRIGHT: (C)2009,JPO&INPIT
|
