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Optically frequency modulated 6 GHz MMIC oscillator

Callaghan, Peter, Suresh Babu, S. K., Gomes, Nathan J., Jastrzebski, Adam K. (1995) Optically frequency modulated 6 GHz MMIC oscillator. In: 25th European Microwave Conference, 1995., 4 Sept 1995, Bologna, Italy. (doi:10.1109/EUMA.1995.336937) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1109/EUMA.1995.336937

Abstract

Optical illumination is used to modulate a 6 GHz GaAs MMIC VCO. Tuning can be achieved by illuminating either the MESFET or the Varactor. The MESFET tuning is caused by photocurrents varying the self-bias condition. Varactor optical tuning results from both a change in the junction capacitance and by external voltages generated by a photocurrent. Although both devices achieved similar D.C. optical tuning levels, tuning via the Varactor was found to be frequency limited. Preference is therefore given to illumination of the MESFET as the optical interface component. The resulting FM modulation bandwidth achieved is sufficient for the transmission of video signals with bandwidths up to 10 MHz.

Item Type: Conference or workshop item (Paper)
DOI/Identification number: 10.1109/EUMA.1995.336937
Uncontrolled keywords: Bandwidth Frequency modulation Lighting MESFETs MMICs Optical modulation Optical tuning Oscillators Photoconductivity Varactors
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts
Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 13 Nov 2013 14:07 UTC
Last Modified: 29 May 2019 11:20 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/36291 (The current URI for this page, for reference purposes)
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