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  • Quoc-Hoang Duong, Jeong-Seon Lee, Sang-Hyun Min, Joong-Jin Kim, and Sang-Gug Lee,"A 90 dB 1.32 mW 1.2 V 0.13 mm2 Two-Stage Variable Gain Amplifier in 0.18 pm CMOS",lElCE TRANS. ELECTRON, VOL.E91-C, NO.5 MAY. 2008.
  • Quoc-Hoang Duong, Chang-Wan Kim, and Sang-Gug Lee,"All CMOS Low-Power Wide-Gain Range Variable Gain Amplifiers",IEICE TRANS. ELECTRON. VOL.E91-C. NO.5 MAY. 2008.
  • Chang-Wan Kim, Quoc-Hoang Duong, Seung-Sik Lee, and Sang-Gug Lee," A 0.13um CMOS UWB RF transmitter with an on-Chip T/R Switch", ETRI Journal, Vol30, No.4, pp526-534, Aug. 2008.
  • Seok-Ju Yun, Dae-Young Yoon, and Sang-Gug Lee," A Complementary -Coulpled CMOS LC Quadrature oscillator ",IEICE Transactions on Electron., Vol.E91-C, No.11, pp1806-1810, Nov. 2008.
  • Trung-Kien Nguyen, Viet-Hoang Le, Quoc-Hoang Duong, Seok-kyun Han, Sang-Gug Lee,Nak-Seon Seong, Nae-Soo Kim, and Chel-Sig Pyo," A Low Power Direct Conversion Transceiver for 915MHz-Band IEEE 802.15.4b Standard Based on 0.18 um CMOS Technology",ETRI Journal,vol.30, no.1, Feb. 2008.
  • S.B Shin and S.G. Lee," An LC-VCO strongly suppresses the AM-FM conversion caused by varactor", IEICE Trans electron,Vol E91-C, No.9, pp.1516-1519, Sep. 2008.
  • Nguyen, H.-H.; Duong, Q.-H.; Le, H.-B.; Lee, J.-S.; Lee, S.-G.,"Low-power 42 dB-linear single-stage digitally-controlled variable gain amplifier",Electronics Letters, vol.44, Issue.13, Jun 19. 2008.
  • Seok-Ju Yun, Nguyen, D.B.Yen, Inyoung Lee, Jin-Taek Lee, and S.-G, Lee,"A Differentially-Tuned Voltage Controlled Oscillator Using Symmetric Transformer",IEEE Microwave and Wireless Comppnenets Letters. VOL.18. NO.7, July. 2008.
  • Tuan-Anh Phan, Jeongseon Lee, Vladimir Krizhanovskii, Quan Le, Seok-Kyun Han, and Sang-Gug Lee,"Energy-Efficient Low-Complexity CMOS pulse Generator for Multiband UWB impulse Radio", IEEE Transactions on Circuits and Systems Part I, Vol.55, No.11,pp.3552-3563, 2008.
  • H.-H.Nguyen, Q.-H.Duong, and S.-G.Lee "84 dB 5.2 mA digitally-controlled variable gain amplifier", Electronics Letters, Vol.44, No.5, Feb. 2008.
  • Tuan-Anh Phan, Ronan Farrell, and Sang-Gug Lee,"Sharp-Rejection Techniques in High Frequency Active-RC LPF for UWB Application", Transactions on Electronics and Signal Processing, ISAST, vol 3, no 2, pp.38-40, 2008.