Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Andrew Zai"'
Publikováno v:
2019 IEEE International Symposium on Phased Array System & Technology (PAST).
Analysis shows that multiple time-delayed power amplifiers can share a single envelope tracker and provide a significant improvement over statically supplied amplifiers. Phased arrays are a suitable application of this technique. Our analysis shows a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59cf13092930013924b879ae809684b7
https://doi.org/10.1109/past43306.2019.9020929
https://doi.org/10.1109/past43306.2019.9020929
Autor:
Maxwell E. Plaut, Michael Lis, Andrew Zai, David J. Cipolle, John Russo, Theodore H. Fedynyshyn
Publikováno v:
ACS Applied Materials & Interfaces. 8:34019-34026
The creation of millimeter wave, 3D-printable dielectric nanocomposite is demonstrated. Alumina nanoparticles were combined with styrenic block copolymers and solvent to create shear thinning, viscoelastic inks that are printable at room temperature.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f259bf037f560a26989a6822404df07
https://doi.org/10.1021/acsami.6b11643
https://doi.org/10.1021/acsami.6b11643
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:2953-2964
This paper introduces an efficient radar transmitter with improved spectral confinement, enabled by a pulse waveform that contains both amplitude and frequency modulation. The theoretical behavior of the Class-B power amplifier (PA) under a Gaussian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afcf6f26da96691309616079ba9e88a
https://doi.org/10.1109/tmtt.2015.2450747
https://doi.org/10.1109/tmtt.2015.2450747
Autor:
Andrew Zai
Publikováno v:
IEEE Microwave Magazine. 20:29-29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b254d2db2f464e2270a5d92b18be900b
https://doi.org/10.1109/mmm.2019.2891829
https://doi.org/10.1109/mmm.2019.2891829
Publikováno v:
2016 IEEE MTT-S International Microwave Symposium (IMS).
This paper reviews various techniques that allow efficient amplification of amplitude-modulated radar pulses through some type of supply modulation. Examples at S and X-band with GaN PAs will be shown with efficiencies above 50% for 10-W transmitters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbb81f699d7cbc47f8a7f84eaccbadb4
https://doi.org/10.1109/mwsym.2016.7540378
https://doi.org/10.1109/mwsym.2016.7540378
Publikováno v:
2015 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS).
This paper describes the design and performance of an X-band GaN monolithic microwave integrated circuit (MMIC) Doherty power amplifier (DPA) in a 0.15 µm gate length GaN on SiC process. The measured output power is greater than 36dBm at peak PAE of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fe1d3581d3052ad75ef1247a05b095a
https://doi.org/10.1109/csics.2015.7314469
https://doi.org/10.1109/csics.2015.7314469
Publikováno v:
2014 IEEE MTT-S International Microwave Symposium (IMS2014).
This paper presents measurement results on supply-modulated X-band 0.15μm gate width GaN HEMT MMIC power amplifiers for OFDM signals. Two PAs at 10GHz with 4 and 10W output powers show peak CW efficiencies of 69% and 55%, with gains of 8.5 and 20.4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33fea7eafea6399f57fc3b527cde4cb9
https://doi.org/10.1109/mwsym.2014.6848545
https://doi.org/10.1109/mwsym.2014.6848545
Publikováno v:
International Microwave Symposium
International Microwave Symposium, Jun 2013, Seattle, United States. pp.TU3F-1
International Microwave Symposium, Jun 2013, Seattle, United States. pp.TU3F-1
Static X-parameter (XP) models for RF power amplifiers (PAs), derived from both simulations and nonlinear vector network analyzer (NVNA) measurements, are investigated for the prediction of PA performance under dynamic signal conditions such as in en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8ba381a16aed0ac17949c8e5cad97c3
https://hal-unilim.archives-ouvertes.fr/hal-00918778
https://hal-unilim.archives-ouvertes.fr/hal-00918778
Publikováno v:
2013 IEEE 14th Workshop on Control and Modeling for Power Electronics (COMPEL).
This paper presents an envelope tracking supply modulator for a high efficiency radiofrequency power amplifier (RFPA). A wide bandwidth linear amplifier using a GaN high electron mobility transistor (HEMT) as a source follower output stage is describ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59a988d3bad44daa15c3730cbc27eec1
https://doi.org/10.1109/compel.2013.6626453
https://doi.org/10.1109/compel.2013.6626453
Autor:
Theodore H. Fedynyshyn, David J. Cipolle, Andrew Zai, Maxwell E. Plaut, Jennifer A. Lewis, Michael Lis, John Russo
Publikováno v:
Advanced Materials Technologies. 1:1600027
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3876bd50433a322076589da244505588
https://doi.org/10.1002/admt.201600027
https://doi.org/10.1002/admt.201600027