Title:
BURGLARPROOF ANTENNA SYSTEM
Document Type and Number:
Japanese Patent JP3631778
Kind Code:
B2
Abstract:
PURPOSE: To obtain an antenna system which can be assembled easily and can be housed in an enclosure with high mechanical stability by forming a sandwich structure of members constituting the enclosure and a shield plate and providing a V-shaped part for the antenna conductor.
CONSTITUTION: Of the surface members 5-7 of the enclosure of an antenna system, a front-face member 3 and a rear-face member 4 form a sandwich structure together with a shield plate 2 held between the members 3 and 4. In addition, an antenna conductor 1 is mounted along the sharp apex formed on the side faces of the V-shaped section 8 of the front-face member 3. Since the sandwich structure is formed of the members 3 and 4 constituting the enclosure and the shield plate 2 which constitutes parts the members 3 and 4 at the part where such a structure can be formed the antenna device can be assembled and installed easily. In addition, since the V-shaped section 8 is provided for the antenna conductor 1, a tough structure having flexural rigidity can be obtained in the front-face member 3 and the mechanical stability of the antenna system is improved in the enclosure having a simple structure.
Inventors:
Ernst Yetzer
Application Number:
JP12378794A
Publication Date:
March 23, 2005
Filing Date:
June 06, 1994
Export Citation:
Assignee:
ACTRON ENTWICKLUNGS AKTIENGESELLSCHAFT
International Classes:
G08B13/24; H01Q1/12; H01Q7/04; H01Q17/00; H05K9/00; (IPC1-7): H01Q7/04; G08B13/24; H01Q1/12; H01Q17/00; H05K9/00
Domestic Patent References:
| JP3185597A | ||||
| JP2079197A |
Foreign References:
| US5367291 |
Attorney, Agent or Firm:
Sadayuki Hosoi
Mitsuo Chonan
Ishiwatari Eibo
Mitsuo Chonan
Ishiwatari Eibo