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A compact Ku‐band MMIC subharmonic image rejection mixer using an active filter
Author(s) -
Hou JianAn,
Chiu JuiChieh,
Wang YeongHer
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22930
Subject(s) - image response , monolithic microwave integrated circuit , harmonic mixer , dbc , subharmonic , electrical engineering , electronic engineering , microwave , diode , linearity , materials science , intermediate frequency , optoelectronics , engineering , radio frequency , telecommunications , physics , local oscillator , phase noise , amplifier , cmos , nonlinear system , quantum mechanics
A subharmonic diode mixer with high image rejection and linearity for Ku‐band applications is realized. It is fabricated on a 4‐mil substrate using 2.0 μm HBT‐based MMIC processes. In the design, an active filter in front of the mixer is used to cancel the image interference and to achieve the goal of higher isolation with a smaller chip area. The measured results show the conversion loss of 16 dB, input third‐order intercept point of 4.1 dBm and the image rejection ratio of 30.7 dBc at 14 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 3136–3139, 2007; Published online in Wiley Inter‐Science (www.interscience.wiley.com). DOI 10.1002/mop.22930