| 摘要 |
PROBLEM TO BE SOLVED: To provide a null-less antenna capable of filling in a null with a simple configuration. SOLUTION: The null-less antenna has a plurality of unit antennas. Each unit antenna includes a plurality of radiating elements 11, a feeding point 13 arranged between the radiating elements 11, and a feeder lines 12 connecting the feeding point 13 and the radiating elements 11. The length a of the feeding line from the feeding point 13 to one of the radiating elements differs from the length b of the feeding line to the other radiating element in the unit antenna 10. The directivity of the unit antenna 10 is made asymmetrical to suppress the generation of the null. COPYRIGHT: (C)2004,JPO
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