DD_Paper.pdf (261.36 kB)
Frequency reconfigurable RF circuits using photoconducting switches
journal contribution
posted on 2010-01-18, 11:42 authored by D. Draskovic, C.J. Panagamuwa, J.C. Vardaxoglou, D. BudimirDesigns for a frequency switchable dual-band branch-line coupler and a reconfigurable S-band power
amplifier input matching network with photoconducting switches are presented. Frequency switching
is achieved by increasing the power of the laser applied to the highly resistive silicon wafer and
changing the properties of silicon under optical illumination. The advantages of this approach are
high-speed switching, electromagnetic transparency (no interference) and thermal and electrical
isolation between the device and the control circuit. A branch-line coupler frequency shift of 35% and
10% has been achieved from all switches off to all switches on in lower (900 MHz) and upper (1800
MHz) frequency bands, respectively. Frequency switchable class AB power amplifier with silicon
switch in the input matching circuit has obtained the frequency tuning range of 2.5-3.5 GHz with no
significant loss in efficiency and linearity.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
DRASKOVIC, D. ... et al, 2010. Frequency reconfigurable RF circuits using photoconducting switches. International Journal of RF and Microwave Computer-Aided Engineering, 20 (1), pp.15-21.Publisher
© Wiley Periodicals, Inc.Version
- SMUR (Submitted Manuscript Under Review)
Publication date
2010Notes
This is the pre-peer reviewed version of an article published in the journal, International Journal of RF and Microwave Computer-Aided Engineering [© Wiley Periodicals, Inc.]. The definitive version is available at: dx.doi.org/10.1002/mmce.20415ISSN
1096-4290Publisher version
Language
- en