Draskovic, Drasko and Budimir, Djuradj and Panagamuwa, Chintana and Vardaxoglou, John C. (2009) Frequency switchable dual-band branch-line coupler. In: 39th European Microwave Conference 2009, 28 Sep - 02 Oct 2009, Rome, Italy.
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In this paper, silicon switches are implemented in the design of frequency switchable dual-band branch-line coupler. 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 coupler and the control circuit. A 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.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Frequency switchable; dual-band; branch-line coupler|
|Research Community:||University of Westminster > Electronics and Computer Science, School of|
|Deposited On:||07 May 2009 11:03|
|Last Modified:||11 May 2012 13:56|
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