Published January 1, 2005
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Journal Article
Open
An optimized design of distributed active transformer
Chicago
Abstract
A novel structure distributed active transformer (DAT), which significantly reduces the coupling from the DAT to the feed line is demonstrated. A grounded guard line is implemented to isolate the feed line from the magnetic field of the DAT. The measured result of the DAT on a GaAs substrate shows a 10.5-dB reduction in the coupling. To reduce DAT loss, an air-bridge connected double primary DAT structure is implemented. The DAT at 2 GHz shows a 0.7-dB loss reduction in comparison to the conventional DAT. The improved DAT performance is related to the reduced metal resistance and closer coupling between the primary and secondary loops without any increase in the DAT area.
Additional Information
© Copyright 2005 IEEE. Reprinted with permission. Manuscript received February 26, 2004; revised May 23, 2004. This work was supported by the Ministry of Education, Korea, under the BK21 Project.Files
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- Eprint ID
- 1474
- Resolver ID
- CaltechAUTHORS:KIMieeetmtt05
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2006-01-21Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field