Resonant frequency characteristic tag and method of manufacturin

Details Resonant frequency characteristic tag and method of manufacturin Resonant frequency characteristic tag and method of manufacturin

1988-11-09

1990-11-13

Woodiel, Donald O.

Communications: electrical

Condition responsive indicating system

Specific condition

340572, G08B 1314

Patent

active

049704958

ABSTRACT:
A resonant frequency characteristic tag is disclosed, which comprises an electrically insulating thin film having an electric characteristic, an electric circuit consisting of a metal foil formed on one side surface of the thin film and having a predetermined length and having opposite end portions respectively formed with a capacitor section and a terminal section, the capacitor section having a piercedly formed hole extending from the side of the metal foil to the other side surface of the thin film, the metal foil being deformed in the formation of the hole into a burr-like portion extending toward the other side surface of the thin film, and an electrode metal foil formed on the other side surface of the thin film and having a size capable of containing the hole, the electrode metal foil being laminated to the other side surface of the thin film with an electrically insulating adhesive having a dielectric characteristic such that the free end of the burr-like portion and the electrode metal foil is spaced apart a predetermined distance, the terminal section of the electric circuit being electrically connected to the electrode metal foil to form a resonant circuit; and a method for manufacturing the resonant frequency characteristic tag is also disclosed.

REFERENCES:
patent: 3913219 (1975-10-01), Lichtblau
patent: 4498076 (1985-02-01), Lichtblau
patent: 4567473 (1986-01-01), Lichtblau

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