Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Wangmyong Woo"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:301-310
This paper proposes a new vector-sum type variable-phase shifter (VPS) topology for predistorting the phase of a modulated signal for an analog-predistortion power amplifier system. It has a continuous linear-in-degree control curve over a 90° phase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dfbd4ac3ebe9f01aee1b7862f47c3e5
https://doi.org/10.1109/tmtt.2011.2177856
https://doi.org/10.1109/tmtt.2011.2177856
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:68-76
To predistort the signal of an analog-predistortion power amplifier system, this paper proposes a variable gain amplifier (VGA) topology that gives an optimized linearity and bandwidth performance while having a continuous, linear-in-decibel gain con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::409c002e93df2da022b155de1f977606
https://doi.org/10.1109/tmtt.2011.2175234
https://doi.org/10.1109/tmtt.2011.2175234
Publikováno v:
IEEE Journal of Solid-State Circuits. 46:1023-1033
Several approaches to design a linear attenuator have been analyzed in terms of the transistor impedance variation, linearity, frequency responses, and circuit complexity. This paper proposes a novel method of using an adaptive bootstrapped body bias
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65d62473f182f7801f3a52d090a06812
https://doi.org/10.1109/jssc.2011.2117530
https://doi.org/10.1109/jssc.2011.2117530
Autor:
Dong Ho Lee, Ki Seok Yang, Chang-Ho Lee, Haksun Kim, J. Laskar, Jae Joon Chang, Ockgoo Lee, Jeonghu Han, Youn Suk Kim, Wangmyong Woo, Hyungwook Kim, Kyu Hwan An
Publikováno v:
IEEE Journal of Solid-State Circuits. 43:1064-1075
Fully integrated CMOS power amplifiers (PAs) with parallel power-combining transformer are presented. For the high power CMOS PA design, two types of transformers, series-combining and parallel-combining, are fully analyzed and compared in detail to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d416963e567647392d7d74ec31041b6f
https://doi.org/10.1109/jssc.2008.920349
https://doi.org/10.1109/jssc.2008.920349
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 53:229-237
This paper presents an adaptive wide-band digitally controlled RF envelope predistortion linearization system for power amplifiers (PAs). A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instanta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dad8f8ac91740f4a79d3afcb96b40c8
https://doi.org/10.1109/tmtt.2004.839306
https://doi.org/10.1109/tmtt.2004.839306
Publikováno v:
2010 IEEE Radio Frequency Integrated Circuits Symposium.
A wide bandwidth, highly linear variable attenuator designed in 0.18µm triple-well CMOS process is presented. This attenuator is based on three cascade π-networks with body voltage distribution scheme to minimize the effects of the input power leve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::334653604390bc838df600f86fd675f8
https://doi.org/10.1109/rfic.2010.5477366
https://doi.org/10.1109/rfic.2010.5477366
Autor:
Wangmyong Woo, Kenney, J.S.
Publikováno v:
Proceedings 2004 IEEE Radio & Wireless Conference (IEEE Cat. No.04TH8746); 2004, p175-178, 4p
Publikováno v:
Proceedings Radio & Wireless Conference, 2003 (RAWCON '03); 2003, p401-404, 4p
Autor:
Haksun Kim, Wangmyong Woo, Youn Suk Kim, Hyungwook Kim, J. Laskar, Kyu Hwan An, Jae Joon Chang, Ockgoo Lee, Ki Seok Yang, Chang-Ho Lee
Publikováno v:
2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium.
In this paper, a novel monolithic voltage-boosting parallel-primary transformer is presented for the fully integrated CMOS power amplifier design. Multiple primary loops are interweaved in parallel to combine the AC currents from multiple power devic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5f0dfe9077d4e2001b31b25730e70a7
https://doi.org/10.1109/rfic.2007.380914
https://doi.org/10.1109/rfic.2007.380914
Autor:
J. Laskar, Ki Seok Yang, Chang-Ho Lee, Kyu Hwan An, Youn Suk Kim, Hyungwook Kim, Wangmyong Woo, Jae Joon Chang, Ockgoo Lee
Publikováno v:
2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium.
This paper newly presents a push-pull parallel-combined CMOS power amplifier (PA) and its analysis of operation. The proposed class-E CMOS PA incorporates the push-pull parallel-combined power devices with the 1:1:2 (two single-turn primary windings
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f17be66c2c00d607b02230d87a55eb3
https://doi.org/10.1109/rfic.2007.380918
https://doi.org/10.1109/rfic.2007.380918