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RF-IPD directional coupler for mobile RFID handset applications
- Source :
- Electronics Letters. 43:719
- Publication Year :
- 2007
- Publisher :
- Institution of Engineering and Technology (IET), 2007.
-
Abstract
- To offer RFID services on mobile phones, the RFID reader must be embedded on the handset as a chip. However, the directional coupler, a ceramic passive component used in conventional RFID readers with identical Tx/Rx carrier frequency, has been too large for cellular handset applications. A miniaturised directional coupler design for UHF RFID mobile readers using an IPD (integrated passive device) process is presented. Parallel-coupled line theory has been used for formulation of a T-type and a -type coupler. Couplers with dimensions of 1.74 1.6 mm and 1.32 1.4 mm were assembled using the IPD process.
Details
- ISSN :
- 00135194
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- Electronics Letters
- Accession number :
- edsair.doi...........e588ee5225fa3aa3d6c734bc76649a9f