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Proceedings Paper

Phase shifter using carbon nanotube thin-film transistor for flexible phased-array antenna
Author(s): Daniel Pham; Harish Subbaraman; Maggie Yihong Chen; Xiaochuan Xu; Ray T. Chen
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Paper Abstract

Printing technique is a simple and cost effective method to produce electronics. In this work, self-aligned carbon nanotube thin-film transistor based phased shifter has been used to fabricate a 1x4 phased array antenna system on a flexible substrate using a combination of ink-jet printing and stamping techniques. The radiation pattern is measured for different steering angle conditions. Measured and simulated far field radiation patterns are reported, and both data sets agree well with each other. The efficiency the 2-bit 1x4 PAA system is calculated to be 42% including the loss of transmission line, FET switch, and coupling loss of RF probes.

Paper Details

Date Published: 21 February 2011
PDF: 6 pages
Proc. SPIE 7936, RF and Millimeter-Wave Photonics, 793604 (21 February 2011); doi: 10.1117/12.876158
Show Author Affiliations
Daniel Pham, The Univ. of Texas at Austin (United States)
Harish Subbaraman, Omega Optics, Inc. (United States)
Maggie Yihong Chen, Texas State Univ. San Marcos (United States)
Xiaochuan Xu, The Univ. of Texas at Austin (United States)
Ray T. Chen, The Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 7936:
RF and Millimeter-Wave Photonics
Robert L. Nelson; Dennis W. Prather; Christopher A. Schuetz, Editor(s)

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