Abstract
A novel Norton equivalent circuit model for characterizing the photoconductive feed of photoconductive antennas is introduced. It incorporates the physics of the photoconductive antenna's excitation by accounting for: (i) the electrical properties of the photoconductive material; (ii) the features of the optical power excitation; (iii) the geometrical dimensions of the gap between the electrodes that couple the antenna to the photoconductive material. The model is applicable to describing the antenna feeding mechanism for the photoconductors being illuminated by means of lasers operating in both pulsed and continuous modes. The proposed model is validated by comparing the power estimated by it with power measurements of different photoconductive antennas. The advocated solution is conducive to analyzing and designing photoconductive antennas. In particular, it is expected to be at the core of antenna optimization tools for maximizing the Terahertz (THz) power radiation, this making it an important enabler for designing THz time-domain systems.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 47th European Microwave Conference, EuMC 2017 |
| Publisher | IEEE |
| Pages | 268-271 |
| Number of pages | 4 |
| Volume | 2017-January |
| ISBN (Electronic) | 978-2-87487-047-7 |
| ISBN (Print) | 978-1-5386-3964-1 |
| DOIs | |
| Publication status | Published - 2017 |
| Event | EuMC 2017: 47th European Microwave Conference 2017 - Nürnberg Convention Center, Nürnberg, Germany Duration: 8 Oct 2017 → 12 Oct 2017 Conference number: 47 |
Conference
| Conference | EuMC 2017 |
|---|---|
| Country/Territory | Germany |
| City | Nürnberg |
| Period | 8/10/17 → 12/10/17 |
Keywords
- Equivalent circuit
- photoconductivity
- THz detector
- THz photoconductive antenna
- THz radiated power
- THz source
- THz technology