Design and analysis of a 44-GHz MMIC low-loss built-in linearizer for high-linearity medium power amplifiers

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dc.contributor國立臺灣師範大學應用電子科技學系zh_tw
dc.contributor.authorJeng-Han Tsaien_US
dc.contributor.authorHong-Yeh Changen_US
dc.contributor.authorPei-Si Wuen_US
dc.contributor.authorYi-Lin. Leeen_US
dc.contributor.authorTian-Wei Huangen_US
dc.contributor.authorHuei Wangen_US
dc.date.accessioned2014-10-30T09:28:45Z
dc.date.available2014-10-30T09:28:45Z
dc.date.issued2006-06-01zh_TW
dc.description.abstractA 44-GHz monolithic microwave integrated circuit (MMIC) low-loss built-in linearizer using a shunt cold-mode high-electron mobility transistor (HEMT), based on the predistortion techniques, is presented in this paper. The proposed cold-mode HEMT linearizer can enhance the linearity of the power amplifier (PA) with a low insertion loss (IL<2 dB), a compact die-size, and no additional dc power consumption. These advantages make the linearizer more suitable for millimeter-wave (MMW) applications. The physical mechanism of the gain expansion characteristics of the proposed linearizer is analyzed. A systematic design procedure for a low-loss linearizer is developed, which includes: 1) insertion loss minimization through a device-size selection and 2) linearity optimization through a two-tone test. To demonstrate the general usefulness of the proposed linearizer, the linearizer was applied to a two-stage 44-GHz MMIC medium PA and a commercial MMW PA module. After linearization, the output spectrum regrowth is suppressed by 7-9 dB. To keep the adjacent channel power ratio below -40 dBc, the output power has been doubled from 15 to 18 dBm at 44 GHz. The error vector magnitude of the 16-quadrature amplitude modulation signal can be reduced from 6.11% to 3.87% after linearization. To the best of our knowledge, this is the first multistage MMW PA with a low-loss built-in linearizeren_US
dc.description.urihttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1643577&userType=instzh_TW
dc.identifierntnulib_tp_E0611_01_021zh_TW
dc.identifier.issn0018-9480zh_TW
dc.identifier.urihttp://rportal.lib.ntnu.edu.tw/handle/20.500.12235/32257
dc.languageenzh_TW
dc.publisherIEEE Microwave Theory and Techniques Societyen_US
dc.relationIEEE Trans. on Microwave Theory and Techniques, 54(6), 2487-2496.en_US
dc.subject.otherLinearizeren_US
dc.subject.othermillimeter-wave (MMW)en_US
dc.subject.othermonolithic microwave integrated circuit (MMIC)en_US
dc.subject.othernonlinearen_US
dc.subject.otherpower amplifier (PA).en_US
dc.titleDesign and analysis of a 44-GHz MMIC low-loss built-in linearizer for high-linearity medium power amplifiersen_US

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