| 摘要 |
The invention relates to an arrangement for enhancing electrical isolation between antennas in antenna structures comprising at least two antennas, and a radio device applying the arrangement. To enhance antenna isolation, the interfering antenna includes components causing substantial degradation in the radiation characteristics in the operating band of another antenna. For example, a PIFA (310) may include, instead of a short-circuit conductor, a conductive structure (312, 313, 314) having a parallel resonance in the operating band of another antenna (320). Mutual interference of radio parts using separate antennas can be made relatively small without electrical isolation arrangements between antenna elements. Moreover, the invention makes antenna filter design easier and reduces disadvantages caused by antenna filters. <IMAGE>
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