Presentation 2005-01-17
IM3 Distortion Measurement and Parasitic Impedance Extraction of GaAs One Chip Anti-Series Varactor Pair
Munehisa YABUZAKI, Qing HAN, Takashi OHIRA, Masami AKAIKE, Atsushi SHIMURA,
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Abstract(in English) GaAs one Chip Anti-Series Varactor Pair (ASVP) was trial manufactured. Its third-order intermodulation (IM3) distortion generated from nonlinearity of capacitance-voltage characteristics of the ASVP is measured at 2.484GHz. IM3 distortion of the chip is suppressed by approximately 2.8dB from the level of a single varactor (SV). However, the distortion is not satisfied when compared with the result of theory. Consequently, extraction of parasitic impedance is carried out. We find that there are a series-resistance of 500 Ω and a parallel-capacitance of 4 pF exist in the chip. Moreover, impurity distribution coefficient (γ) of the chip is found as 0.827 which is different with the designed value of 0.5. Which is also believed to be the cause of not so good suppression of IM3 distortion.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) GaAs one Chip Anti-Series Varactor Pair / IM3 / parasitic impedance / impurity distribution coefficient
Paper # ED2004-203,MW2004-210
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Committee MW
Conference Date 2005/1/10(1days)
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Registration To Microwaves (MW)
Language JPN
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Title (in English) IM3 Distortion Measurement and Parasitic Impedance Extraction of GaAs One Chip Anti-Series Varactor Pair
Sub Title (in English)
Keyword(1) GaAs one Chip Anti-Series Varactor Pair
Keyword(2) IM3
Keyword(3) parasitic impedance
Keyword(4) impurity distribution coefficient
1st Author's Name Munehisa YABUZAKI
1st Author's Affiliation Tokyo University of Science()
2nd Author's Name Qing HAN
2nd Author's Affiliation ATR Wave Engineering Laboratories
3rd Author's Name Takashi OHIRA
3rd Author's Affiliation ATR Wave Engineering Laboratories
4th Author's Name Masami AKAIKE
4th Author's Affiliation Tokyo University of Science
5th Author's Name Atsushi SHIMURA
5th Author's Affiliation Tokyo University of Science
Date 2005-01-17
Paper # ED2004-203,MW2004-210
Volume (vol) vol.104
Number (no) 551
Page pp.pp.-
#Pages 6
Date of Issue