Mans B. Jansen
Agricultural Research Department (DLO-NL)
Institute of Agricultural and Environmental Engineering (IMAG-DLO)
Mansholtlaan 10-12, P.O. box 43, NL-6700 AA Wageningen, The Netherlands

In the past two years, more research has been carried out on the patented modulation method for small transmitters [1]. For a number of applications, transmitter circuits have been developed which combine very good stability and FM/FSK modulation properties with small dimensions and low current consumption at low supply voltages. These transmitters operate in the 30 MHz and in the 153 MHz telemetry bands. In the paper, several applications will be discussed, each of them tailored to the specific needs of the implants. Special emphasis will be put on the application for the European CAPT project, in which the University of Leuven, Belgium, and the University of Vila Real, Portugal are co-operating.

REFERENCES

[1] Jansen, M.B., Cats, T.A.J. 1996, Designing telemetry transmitters in conformity with the requirements of the Dutch Ministry of Transport, Public works and Water Management. Biotelemetry XIII; 166-171, Proceedings of the Thirteenth Symposium on Biotelemetry, Williamsburg, March 26 to 31, 1995, USA