1995

Elboxrf awarded a contract from The Department of Telecommunications of AGH-UST (University of Science and Technology, Krakow) to design, develop and manufacture the Radio Frequency Identification System.

During the work, Elboxrf developed an original system for tracking an active RF tags. The system consisted up to 255 transmitters, microstrip antennas with integrated RF preamplifiers, and the five-processor central unit with RF receivers.

The system operated on the ISM 433MHz band and was successfully tested on the experimental site under real conditions. Below: an active RF Tag and a part of a control unit.

FIG. 1
This tiny battery-operated transmitter was designed to have no less than +10 dBm transmit power in the 433 MHz ISM band at DC voltage between 2.5 - 3.5V. At this side you can see the PIC16C54 uController from MICROCHIP, the MRF2006 IC from HEWLETT-PACKARD and the Surface Acoustic Wave component from RFM. The average Icc was about 2 mA.

FIG. 2
The back side - remaining components. The whole unit was carefully screened and immersed in a epoxy resin.

FIG. 3

The transmitter with attached an helical antenna.

FIG. 4

The main CPU. The remaining fifth processor was on the radio board.