Title:
アンテナ用コイル及び送信アンテナ
Document Type and Number:
Japanese Patent JPWO2003036761
Kind Code:
A1
Abstract:
In a transmission antenna provided with an antenna coil outfitted with a core whereon a coil is mounted by winding, and with a capacitor connected to the aforementioned coil forming a serial resonance circuit between the aforementioned antenna coil inductance, the aforementioned antenna coil is outfitted with small core screw with a core smaller than the aforementioned core, and with a joining material that magnetically joins the aforementioned screw to the aforementioned core and with a screw hole that serves as a non-magnetic distance adjuster whereby the distance between the aforementioned core and the aforementioned screw is adjustable, and the resonance frequency is set by adjusting the thread volume of the aforementioned screw.
Inventors:
岡村 真二
上田 穂積
上田 穂積
Application Number:
JP2003539136A
Publication Date:
February 17, 2005
Filing Date:
September 30, 2002
Export Citation:
Assignee:
スミダコーポレーション株式会社
スミダテクノロジーズ株式会社
スミダテクノロジーズ株式会社
International Classes:
H01Q7/06; H01Q1/22; H01Q1/24; H01Q1/32; H01Q1/36; H01Q7/00; H01Q7/08; H01Q11/08; H01Q21/29
Domestic Patent References:
| JPS50102234U | 1975-08-23 | |||
| JPS59152703A | 1984-08-31 | |||
| JPS5922503U | 1984-02-10 | |||
| JP2001257526A | 2001-09-21 | |||
| JPH0410659Y2 | 1992-03-17 | |||
| JP2001297918A | 2001-10-26 |