A Linearity-Enhanced Compact Series-Type Doherty Amplifier Suitable for CDMA Handset Applications

2007 ◽  
Author(s):  
Chanhoe Koo ◽  
Unha Kim ◽  
Jooyoung Jeon ◽  
Junghyun Kim ◽  
Youngwoo Kwon
Keyword(s):  
Series Type ◽  
Doherty Amplifier

Fully Integrated HBT MMIC Series-Type Extended Doherty Amplifier for W-CDMA Handset Applications

ETRI Journal ◽  
2010 ◽  
Vol 32 (1) ◽  
pp. 151-153 ◽  
Author(s):  
Chanhoe Koo ◽  
Junghyun Kim ◽  
Youngwoo Kwon
Keyword(s):  
Fully Integrated ◽  
Series Type ◽  
Doherty Amplifier

A new "series-type" Doherty amplifier for miniaturization

2005 ◽  
Author(s):  
Joomin Jung ◽  
Unha Kim ◽  
Jooyoung Jeon ◽  
Junghyun Kim ◽  
Kyungteh Kang ◽  
...  
Keyword(s):  
Series Type ◽  
Doherty Amplifier

A gradient engineered hole-transporting material for monolithic series-type large-area perovskite solar cells

2017 ◽  
Vol 5 (40) ◽  
pp. 21161-21168 ◽  
Author(s):  
Yongguang Tu ◽  
Jihuai Wu ◽  
Xin He ◽  
Panfeng Guo ◽  
Tongyue Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Efficiency Enhancement ◽  
Large Area ◽  
Active Layers ◽  
Hole Transporting ◽  
Series Type ◽  
Hole Transporting Material

Further efficiency enhancement mainly relies on decreasing the interface losses between the active layers in perovskite solar cells.

A fully integrated Doherty-amplifier for 5.6 GHz WLAN applications

2014 ◽  
Author(s):  
Christoph Tzschoppe ◽  
Robert Wolf ◽  
David Fritsche ◽  
Alexander Richter ◽  
Frank Ellinger
Keyword(s):  
Fully Integrated ◽  
Doherty Amplifier

On Radicals of Skew Inverse Laurent Series Rings

2016 ◽  
Vol 23 (02) ◽  
pp. 335-346
Author(s):  
A. Moussavi
Keyword(s):  
Polynomial Ring ◽  
Jacobson Radical ◽  
Laurent Series ◽  
Ring Extensions ◽  
Series Type ◽  
Armendariz Ring

Let R be a ring and α an automorphism of R. Amitsur proved that the Jacobson radical J(R[x]) of the polynomial ring R[x] is the polynomial ring over the nil ideal J(R[x]) ∩ R. Following Amitsur, it is shown that when R is an Armendariz ring of skew inverse Laurent series type and S is any one of the ring extensions R[x;α], R[x,x-1;α], R[[x-1;α]] and R((x-1;α)), then ℜ𝔞𝔡(S) = ℜ𝔞𝔡(R)S = Nil (S), ℜ𝔞𝔡(S) ∩ R = Nil (R), where ℜ𝔞𝔡 is a radical in a class of radicals which includes the Wedderburn, lower nil, Levitzky and upper nil radicals.

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