A GaInP/GaAs HBT micromixer for 2.4/5.2/5.7-GHz multiband WLAN applications.

Authors :: Wang, C. Y.
Lu, S. S.
Meng, C. C.
Lin, Y. S.
Source :: Microwave & Optical Technology Letters; 10/5/2004, Vol. 43 Issue 1, p87-89, 3p, 1 Black and White Photograph, 1 Diagram, 4 Graphs
Publication Year :: 2004
Abstract: A GaInP/GaAs HBT micromixer for 2.4/5.2/5.7-GHz multiband WLAN applications is demonstrated. Our experimental results show that the input return loss |S<subscript>11</subscript>| is below -25 dB from DC to 10 GHz with power-conversion gains of 11.7, 11.9, and 11.5 dB at frequencies of 2.4, 5.2, and 5.7 GHz, respectively. The wideband matching characteristic makes the micromixer very suitable for multiband applications. Input P<subscript>1dB</subscript> is -4 dBm and IIP<subscript>3</subscript> is 2.36 dBm. Port-to-port isolation is also quite satisfactory. In addition, the single-to-differential input stage in the Gilbert micromixer eliminates the need for common-mode rejection. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 87–89, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20383 [ABSTRACT FROM AUTHOR]