Development of a Switching Passive 2.4 GHz RFID Transponder on Flexible Substrate
conference paper
For the detection and tracking of a football on a playground, a transponder was developed on a flexible substrate suitable for integration in the ball. The transponder secures permanent detection and identification with FMCW radar, thus enabling an easy and cost-effective tracking of the ball. The transponder consists of a dipole antenna and a microprocessor controlled switch which shorts at a programmable rate the input port of the dipole. The user selectable switching frequency or switching sequence can be recognised in the radar Doppler spectrum, since the transponder’s received amplitude and phase vary between the on- and off-state. This approach is patented under nr. 07112606.4. The design, realisation and first results of the transponder are discussed in this article.
TNO Identifier
273136
Publisher
EuMA
Source title
European Microwave Week 2009 - EuMW 2009 - Proceedings of the 39th European Microwave Conference, EuMC 2009, 28 September - 2 October 2009, Rome, Italy
Place of publication
Louvain-la-Neuve
Pages
165-168
Files
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