Patent ID: 6509837
Filing Date: 2003-01-21
Classification: G01S,G06K,H01Q,Y10T

Abstract:
A method of manufacturing a radio frequency data communications device, for use with a remote interrogator unit, the method comprising:providing first transponder circuitry on a sheet substrate; first printing a first microstrip antenna on the sheet substrate, external of the first transponder circuitry, and electrically coupling the first microstrip antenna to the first transponder circuitry; providing a first battery on the sheet substrate and electrically coupling the first battery to the first transponder circuitry; and laser trimming the first microstrip antenna by a first amount, to effect a first sensitivity; and providing second transponder circuitry on a second sheet substrate; second printing a second microstrip antenna on the second sheet substrate, external of the second transponder circuitry, and electrically coupling the second microstrip antenna to the second transponder circuitry; providing a second battery on the second sheet substrate and electrically coupling the second battery to the second transponder circuitry; and laser trimming the second microstrip antenna by an amount different from the first amount to effect a second sensitivity different from the first sensitivity.