An optically modulated radio frequency backscatter wireless data link
The paper reports on how a technique adapted from Radio Frequency Identity (RFID) tag systems is used to implement a low cost, low energy optical/wireless data link, using inexpensive, off-the-shelf components. We describe how the changes in impedance of an antenna-coupled photo-detector under optic...
| Main Authors: | , , , , |
|---|---|
| Format: | Conference Paper |
| Published: |
2013
|
| Online Access: | http://hdl.handle.net/20.500.11937/7398 |
| _version_ | 1848745357272416256 |
|---|---|
| author | Cantú, H. Ironside, Charlie Romeira, B. Kelly, A. Figueiredo, J. |
| author_facet | Cantú, H. Ironside, Charlie Romeira, B. Kelly, A. Figueiredo, J. |
| author_sort | Cantú, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The paper reports on how a technique adapted from Radio Frequency Identity (RFID) tag systems is used to implement a low cost, low energy optical/wireless data link, using inexpensive, off-the-shelf components. We describe how the changes in impedance of an antenna-coupled photo-detector under optical illumination are used to encode binary data into a backscatter radio frequency (RF) wireless signal. The backscatter device consists of an 850 nm VCSEL source (OPTEK OPV302) directly modulated by data at 1 Mbit/s, which illuminates an unbiased photo-detector (Hamamatsu S5973-01) attached to the input port of an omnidirectional antenna. An interrogator is used at the carrier frequency of 1 GHz in order to extract the information from the modulated backscatter RF signal. The system is illustrated in Fig. 1. The pseudo-random bit sequence data (non-return to zero, 1.6 Vpp) is downloaded into an arbitrary waveform generator (AWG) that amplitude modulates the laser source illuminating the antenna-coupled photo-detector (Fig.1a). A spectrum analyser is used to monitor the spectral components of the backscatter carrier at 1 GHz (Fig. 1b), which is received and de-modulated (AD8347) by the interrogator placed at a distance (d) from the antenna-coupled photo-detector (Fig. 1c). |
| first_indexed | 2025-11-14T06:16:04Z |
| format | Conference Paper |
| id | curtin-20.500.11937-7398 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:16:04Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-73982017-09-13T14:35:05Z An optically modulated radio frequency backscatter wireless data link Cantú, H. Ironside, Charlie Romeira, B. Kelly, A. Figueiredo, J. The paper reports on how a technique adapted from Radio Frequency Identity (RFID) tag systems is used to implement a low cost, low energy optical/wireless data link, using inexpensive, off-the-shelf components. We describe how the changes in impedance of an antenna-coupled photo-detector under optical illumination are used to encode binary data into a backscatter radio frequency (RF) wireless signal. The backscatter device consists of an 850 nm VCSEL source (OPTEK OPV302) directly modulated by data at 1 Mbit/s, which illuminates an unbiased photo-detector (Hamamatsu S5973-01) attached to the input port of an omnidirectional antenna. An interrogator is used at the carrier frequency of 1 GHz in order to extract the information from the modulated backscatter RF signal. The system is illustrated in Fig. 1. The pseudo-random bit sequence data (non-return to zero, 1.6 Vpp) is downloaded into an arbitrary waveform generator (AWG) that amplitude modulates the laser source illuminating the antenna-coupled photo-detector (Fig.1a). A spectrum analyser is used to monitor the spectral components of the backscatter carrier at 1 GHz (Fig. 1b), which is received and de-modulated (AD8347) by the interrogator placed at a distance (d) from the antenna-coupled photo-detector (Fig. 1c). 2013 Conference Paper http://hdl.handle.net/20.500.11937/7398 10.1109/CLEOE-IQEC.2013.6801291 restricted |
| spellingShingle | Cantú, H. Ironside, Charlie Romeira, B. Kelly, A. Figueiredo, J. An optically modulated radio frequency backscatter wireless data link |
| title | An optically modulated radio frequency backscatter wireless data link |
| title_full | An optically modulated radio frequency backscatter wireless data link |
| title_fullStr | An optically modulated radio frequency backscatter wireless data link |
| title_full_unstemmed | An optically modulated radio frequency backscatter wireless data link |
| title_short | An optically modulated radio frequency backscatter wireless data link |
| title_sort | optically modulated radio frequency backscatter wireless data link |
| url | http://hdl.handle.net/20.500.11937/7398 |