Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Youngseo Ko"'
Publikováno v:
Electronics; Volume 12; Issue 2; Pages: 264
The 1/f additive phase noise of one-port injection-locked oscillators is experimentally characterized and analyzed using a simple analytic model based on the generalized 1/f Kurokawa theory. To experimentally verify the prediction of the simple analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7aa28f67f504022fa0cab869e16dd38
https://doi.org/10.3390/electronics12020264
https://doi.org/10.3390/electronics12020264
Autor:
Andres Zarate-de Landa, Dan William Nobbe, Youngseo Ko, Francisco Javier Martinez, Chris Olson, J. Apolinar Reynoso-Hernandez, Patrick Roblin
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 62:491-501
A measurement-based quasi-static nonlinear field-effect transistor (FET) model relying on an artificial neural network (ANN) approach and using real-time active load-pull (RTALP) measurement data for the model extraction is presented for an SOS-MOSFE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a269f9f6003c751ce907a64b0f55784c
https://doi.org/10.1109/tmtt.2014.2298372
https://doi.org/10.1109/tmtt.2014.2298372
Publikováno v:
IEEE Microwave Magazine. 14:134-139
In this article, a unique approach is presented to design and fabricate a circuit, rich in nonlinear contents with reduced sensitivity to bias, temperature, and load variations so that it can be used to validate the performance of LSNAs or NVNAs. Thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0704ae78f75b6b99d1b695c413d6671d
https://doi.org/10.1109/mmm.2012.2226640
https://doi.org/10.1109/mmm.2012.2226640
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:1964-1978
Power amplifier (PA) behavior is inextricably linked to the characteristics of the transistors underlying the PA design. All transistors exhibit some degree of memory effects, which must therefore be taken into account in the modeling and design of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::208058ea1174f731ebe40ad7821ec778
https://doi.org/10.1109/tmtt.2012.2193140
https://doi.org/10.1109/tmtt.2012.2193140
Publikováno v:
80th ARFTG Microwave Measurement Conference.
This paper presents a new calibration theory for pulsed-RF large-signal measurement which relies on a new pulsed HPR and new pulsed power calibration besides the conventional relative linear calibration. The methodology used is based on the multiharm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66c83a205b6fd918c7f09c872078269e
https://doi.org/10.1109/arftg.2012.6422437
https://doi.org/10.1109/arftg.2012.6422437
Publikováno v:
2012 IEEE/MTT-S International Microwave Symposium Digest.
This paper presents new microwave characterization techniques to (1) estimate the internal device operating temperature and (2) extract the trap relaxation time-constants in AlGaN/GaN HEMTs. The operating temperature of the device under CW large-sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa8ccd2187362934835585a45fde98ba
https://doi.org/10.1109/mwsym.2012.6259642
https://doi.org/10.1109/mwsym.2012.6259642
Publikováno v:
78th ARFTG Microwave Measurement Conference.
A new load-modulation based power amplifier design scheme is proposed for average power added efficiency (PAE) enhancement. An algorithm for choosing the optimal operating conditions from load-pull data with swept input power is presented. The optima
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37603e5714fa097e8c5a2a8a5b2dc2a5
https://doi.org/10.1109/arftg78.2011.6183863
https://doi.org/10.1109/arftg78.2011.6183863
Autor:
Youngseo, Ko
A new testbed was developed with an LSNA to perform multi-harmonic broadband measurements for periodically modulated signals with bandwidth exceeding the IF receiver bandwidth of the LSNA. This testbed is intended for characterizing PAs using periodi
Externí odkaz:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1268237958
Autor:
Sukkeun Myoung, Patrick Roblin, Fabien De Groote, Youngseo Ko, Jean-Pierre Teyssier, J. Strahler
Publikováno v:
75th ARFTG Microwave Measurement Conference.
A new testbed was developed with an LSNA to perform multi-harmonic broadband measurements for periodically modulated signals with bandwidth exceeding the IF receiver bandwidth of the LSNA. This testbed is intended for characterizing PAs using periodi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c78cfadc9d12fe6f5516530fb23d7e42
https://doi.org/10.1109/arftg.2010.5496322
https://doi.org/10.1109/arftg.2010.5496322
Autor:
Patrick Roblin, Youngseo Ko, Marc Vanden Bossche, Chieh-Kai Yang, Fabien De Groote, Jean-Pierre Teyssier, Seok Joo Doo
Publikováno v:
2009 73rd ARFTG Microwave Measurement Conference.
Real-time active load-pull (RTALP) characterization of power transistors with a large signal network analyzer (LSNA) has the benefit of greatly accelerating the design of power amplifiers. However RTALP has been so far limited to devices operating un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::540f080034766967c0bc06360bfef61e
https://doi.org/10.1109/arftg.2009.5278072
https://doi.org/10.1109/arftg.2009.5278072