Microwave date transmission apparatus

Details Microwave date transmission apparatus Microwave date transmission apparatus

1990-05-14

1991-06-04

Sotomayor, John B.

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

Radar transponder system

Unique identity

342188, G01S 1380

Patent

active

050217909

ABSTRACT:
A microwave data transmission apparatus adapted to transmit and receive information by microwaves, in which an identification tag is made smaller in size and lighter in weight to considerably improve the convenience in a setting operation for use in many applications. The apparatus can be applied for production control within a factory or can be used to recognize whether a person wearing an identification tag has entered or left a room.

REFERENCES:
patent: 4827395 (1989-05-01), Anders et al.
patent: 4912471 (1990-03-01), Tyburski et al.
patent: 4926182 (1990-05-01), Ohta et al.

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