Antenna for transponder

Details Antenna for transponder Antenna for transponder

2005-04-26

2005-04-26

Vannucci, James (Department: 2828)

Communications: radio wave antennas

Antennas

Microstrip

C343S756000, C343S846000

Reexamination Certificate

active

06885342

ABSTRACT:
Antenna for sending and receiving microwave radiation, e.g. for use in a transponder in a transponder system for wireless payment of tolls, or the like. It has an excited antenna element (13) placed on a dielectric antenna carrier or substratum (11), e.g. on a printed circuit board laminate with a copper covered plastic basis suitable for manufacturing of so-called printed circuits. To increase the performance of the antenna for high production rates with cheap materials, the antenna element is placed such that it gets a directional effect mainly perpendicular to a bearing plane (12) of the substratum (11).

REFERENCES:
patent: 4486758 (1984-12-01), De Ronde
patent: 5241321 (1993-08-01), Tsao
patent: 5307075 (1994-04-01), Huynh
patent: 5565875 (1996-10-01), Buralli et al.
patent: 5815121 (1998-09-01), Collier
patent: 5874919 (1999-02-01), Rawnick et al.
patent: 2142475 (1985-01-01), None
patent: 9850977 (1998-11-01), None

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