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Abstract
Wideband millimeter-wave branch-line couplers have been demonstrated using micromachined air-filled rectangular-coaxial lines supported by quarter-wavelength stubs. The coaxial lines are constructed by bonding five layers of gold-plated silicon or SU8 slices. The measured coupler shows an insertion loss of 3.2-4.0 dB in the coupled and thru ports between the frequencies 31.3-47.6 GHz. The isolation is better than 12.8 dB, and the return loss less than -10 dB. In addition to providing support, the stubs enhance bandwidth when properly placed.
Original language | English |
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Article number | 4967866 |
Pages (from-to) | 1655-1660 |
Number of pages | 6 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Volume | 57 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Jul 2009 |
Keywords
- millimeter-wave devices
- Couplers
- micromachining
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Radiation
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Dive into the research topics of 'Micromachined millimeter-wave rectangular-coaxial branch-line coupler with enhanced bandwidth'. Together they form a unique fingerprint.Projects
- 1 Finished
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Millimetre Wave Micromachined Devices for Communications and Radar
Lancaster, M. (Principal Investigator), Jiang, K. (Co-Investigator), Gardner, P. (Co-Investigator), Hall, P. (Co-Investigator), Huang, F. (Co-Investigator) & Prewett, P. (Co-Investigator)
Engineering & Physical Science Research Council
1/12/06 → 31/05/10
Project: Research Councils