A microwave shutter using conductive polymers

An all solid state electrochromic shutter was made incorporating a conductive polymer to modulate the microwave energy. The active polymer layer was polyaniline doped with camphorsulfonic acid which was switched between its conductive and insulting state using Li + as the mobile ion and Li xMn 2O 4...

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Bibliographic Details
Published in:Synthetic metals 1997-03, Vol.85 (1), p.1439-1440
Main Authors: Rose, T.L., D'Antonio, S., Jillson, M.H., Kon, A.B., Suresh, R., Wang, F.
Format: Article
Language:English
Subjects:
Application fields
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
electro-optical modulators
Electronics
Exact sciences and technology
in situ electrochemical spectroscopy
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
polyaniline derivative
Polymer industry, paints, wood
semiconducting films
Technology of polymers
windows
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Summary:An all solid state electrochromic shutter was made incorporating a conductive polymer to modulate the microwave energy. The active polymer layer was polyaniline doped with camphorsulfonic acid which was switched between its conductive and insulting state using Li + as the mobile ion and Li xMn 2O 4 as the counter electrode. Changes in the transmission and reflection of X-band microwave energy were measured as a function of time and bias applied between the electrodes. With switching voltages up to ± 3 V modulation of nearly 10 dB was obtained in 10 minutes, but the cycle lifetime was limited.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(97)80309-8