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Canada 13--14 September 2004) p 176

[2] Paidi V, Griffith Z, Wei Y, Dahlstrom M, Parthasarathy N,
Urteaga M and Rodwell M J W 2004 IEEE Radio Frequency
Integrated Circuits Symposium(Texas, USA 6--8 June 2004) p 189

[3] Sugeng B R A, Wei C J and Hwang J C M 1993
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[4] Dahlstrom M 2003 PhD Thesis (University of
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[5] Jin Z, Su Y B, Cheng W, Liu X Y, Xu A H and Qi M 2008
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[6] Jin Z and Liu X Y 2008 Sci. Chin. E 51
(accepted)

[7] Griffith Z, Dahlstrom M, Urteaga M, Rodwell M J W, Fang X
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[8] Kurishima K, Ida M and Watanabe M 2002 International
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[9] Kim Y M, Dahlstrom M, Lee S, Rodwell M J W and Gossard A C
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[10] Jin Z, Prost W, Neumann S and Tegude F J 2004 Appl.
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[12] Cheng W, Jin Z, Liu X Y, Yu J Y, Xu A H and Qi M 2008
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[13] Jin Z, Su Y B, Cheng W, Liu X Y, Xu A H and Qi M 2008
Chin. Phys. Lett. 25 2686