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UWB Gilbert downconverter with lumped-distributed phase-inverter rat-race coupler based on Chebyshev band-broadening technique.
- Source :
-
Electronics Letters (Institution of Engineering & Technology) . 7/21/2011, Vol. 47 Issue 15, p859-861. 3p. - Publication Year :
- 2011
-
Abstract
- A broadband Gilbert downconverter with a miniature phase-inverter rat-race coupler is demonstrated using 0.35µm SiGe BiCMOS technology. By lumped-distributed and band-broadening techniques, a large shrinkage ratio with wide bandwidth of Chebyshev response can be simultaneously attained in the spiral-shape coplanar-stripline phase-inverter rat-race coupler. The area of the demonstrated lumped-distributed phase-inverter rat-race coupler is 0.65×0.65 mm2 and the experimental bandwidth ranging from 2.5 to 12.5 GHz is large enough to cover the UWB bandwidth. As a result, a broadband Gilbert downconverter with the proposed coupler achieves a conversion gain of 11-12 dB, IP1dB of -11 dBm, IIP3 of -1 dBm and noise figure of 16 dB from 3 to 11 GHz. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00135194
- Volume :
- 47
- Issue :
- 15
- Database :
- Academic Search Index
- Journal :
- Electronics Letters (Institution of Engineering & Technology)
- Publication Type :
- Academic Journal
- Accession number :
- 62961884
- Full Text :
- https://doi.org/10.1049/el.2011.1216