This paper deals with the design and fabrication of durable radio frequency identification (RFID) passive tag with inductive coupling, operating at ultra-high frequencies, dedicated to the identification and monitoring of professional textile products. A reliable architecture for the tag transponder is proposed, featuring a minimal number of galvanic contacts: The two pins of the integrated circuit are connected to the terminals of the inductive coupling loop by using surface mount technology welding. The transponder is encapsulated with an electrically insulating material which is waterproof and resistant to mechanical, thermal, and chemical stress. The antenna is inductively coupled to the transponder through a double loop which substantially reduces the length of the tag and significantly improves the coupling factor, enabling the tag to operate at a low power level. The reliability and flexibility of the tag is obtained by using appropriate materials and manufacturing methods for the ultra-high frequency (UHF) antenna by embroidering a multifilament stainless steel wire on textile support. The washing cycle tests have validated the applicability of this flexible and washable RFID tag, and its electromagnetic performance was experimentally assessed in an independent laboratory.

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Radon concentration measurements in air with an Electronic Radon Gas Monitor in a location close to the telecommunication antenna gave unacceptable values. This paper presents several sets of measurements of electric field at low and high frequency and Radon concentrations in studied location and at the reference location. The Radon concentration measurements were performed both with electronic devices and with the alpha track detectors. To determine susceptibility Radon detector, tests were carried out for galvanic and radiated disturbance coupling. Radiated Immunity tests were made in a TEM cell in the range 850MHz-900MHz, according to IEC 61000-4-6 in the frequency range 150kHz-80MHz. Tests revealed errors of measuring the concentration of Radon gas in the presence of disturbances.