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专利名称：Method of manufacturing an internal
antenna, and antenna element
发明人：Bordi, Mika,Annamaa, Petteri,Mikkonen,
Esa,Raatikainen, Seppo
申请号：EP02396167.5申请日：20021111公开号：EP1313165A2公开日：20030521
专利附图：
摘要：The invention relates to a method of manufacturing a structure suitable as aninternal antenna in small radio devices, and an antenna element to which the method is
applied. The antenna element comprises a radiating plane and additionally e.g.
supportive elements, a feed conductor and short-circuit conductor as well as extensionsto increase capacitance. The antenna element is fabricated by first extruding from a billetan antenna billet, and working the latter as required. The antenna billet may besymmetrical so that two antenna elements will be produced when it is cut in half.Advantageously the antenna element is fabricated so as to conform with the covering ofthe device in which it is placed. It may also be part of a covering of a device. Themanufacturing costs of the antenna element are relatively low and the radio
characteristics of the element are good. An antenna structure employing the elementhas got few separate parts and is mechanically firm and space-conserving.
申请人：Filtronic LK Oy
地址：Takatie 6 90440 Kempele FI
国籍：FI
代理机构：Kupiainen, Juhani
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