dc.contributor |
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.contributor |
Gasulla Forner, Manuel |
dc.contributor.author |
González Rodríguez, Joaquín |
dc.date |
2013-10-29 |
dc.identifier.uri |
http://hdl.handle.net/2099.1/19579 |
dc.language.iso |
spa |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject |
Detectors |
dc.subject |
Sensores autónomos |
dc.subject |
Captación de energía por radiofrecuencia |
dc.subject |
Radiofreqüència |
dc.title |
Circuito captador de energía de radiofrecuencia |
dc.type |
info:eu-repo/semantics/bachelorThesis |
dc.description.abstract |
We can use radio frequency energy in order to fuel autonomous sensors. This energy can be which is radiated into the environment or directly from a source dedicated to it. For this we will use antennas which will receive low signal powers, in this case 0 and -10 dBm with 868MHz of frequency, that through an adaptation network, (formed by a capacitor and a coil), and a rectifier-filter signal (using diode HSMS2850 and a capacitor of 1nF) will make that power transference delivered to the sensor it will be the maximum possible. We decided that the antenna resistance (R_s) was 50Ω (a typical antenna value) because at the moment to measure real results we will use a signal generator with a 50Ω output. This project is based on impedances adaptation of LC network to obtain high efficiencies of the circuit. In simulation section with ADS-2006 program we obtained efficiencies around 70% where the circuit was fuel at 0dbm. Meanwhile the circuit was fuel at -10 dbm the efficiency didn't overcome the 60%. In this case the components were a 0.6pF capacitor and a 31.3nH coil. In implementation of PCB section with an input power of 0 dBm (with a 0.6pF capacitor and a 33nH coil) the circuit overcame the 50% and with -10dBm it overcame a performance upper than 40%, but all this with an unwanted frequency. |