Device for positioning a first object relative to a second objec

Details Device for positioning a first object relative to a second objec Device for positioning a first object relative to a second objec

1993-01-21

1995-02-21

Barron, Jr., Gilberto

Communications: directive radio wave systems and devices (e.g.,

Radar transponder system

342 51, 340572, 343700MS, G01S 1374, B67D 504

Patent

active

053920490

ABSTRACT:
A device for positioning a first object relative to a second object, primarily for positioning an automatic fuelling device relative to vehicles. A transponder using a microstrip antenna design is small in dimension and gives accurate position indication by attachment to a back surface of a body which acts as a close reflection plane. The preferred embodiment of the device is a microstrip patch antenna where the ground plane is of similar size as the antenna element, and where the transponder is mounted on a car body rearward of the fuel filling point, to result in a radiation diagram that is created from the added direct signal from the antenna element and the reflected signal from the car body. A rounded profile of the transponder is a result of placement of its battery adjacent to the radiating element.

REFERENCES:
patent: 4673936 (1987-06-01), Kotoh
patent: 4728955 (1988-03-01), Hane
patent: 4835541 (1989-05-01), Johnson et al.

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