Patent ID: 7176843
Filing Date: 2007-02-13
Classification: H01Q

Abstract:
1. A wideband antenna in which a first conductive element and a second conductive element are arranged so that a first notch of which the width becomes wider with getting apart from a reference point to be a power feeding point is formed between the first conductive element and the second conductive element, wherein the first conductive element and the second conductive element have shapes satisfying two conditions: (i) a sum of the lengths of one or more sides facing the first notch and a first side terminating at one edge of a wider opening of the first notch, these sides pertaining to the first conductive element, and the lengths of one or more sides facing the first notch and a second side terminating at one edge of the wider opening of the first notch, these sides pertaining to the second conductive element, is approximately half of a first wavelength corresponding to a first frequency within a required frequency band; and (ii) a sum of the lengths of one or more sides pertaining to the first conductive element and facing the first notch, and the lengths of one or more sides pertaining to the second conductive element and facing the first notch is approximately half of a second wavelength corresponding to a second frequency within the required frequency band, the second frequency being higher than the first frequency.