UHF Wave Attenuation throughout the Cow Body

RFID is at the forefront of technologies that have found widespread use in recent years. The diversity of fields of use and the ability to track objects easily from a distance make it advantageous within other automatic identification systems. RFID systems, which have been used for many years in animal identification and follow-up, have recently been used to track the data (such as pH and temperature) in the rumen. The pH values in the rumen from a certain distance from the outside can be continuously and instantly monitored with the active RFID tags used for the follow-up of the pH data. In this study, we tried to model how UHF signals of RFID tags used as pH bolus weaken after it comes out of the inner body of animal. Simulation results in CST are verified with measurement results.