60 GHz high-efficiency HEMT MMIC chip set development for high-power solid state power amplifier

2002 ◽  
Author(s):  
Y. Hwang ◽  
J. Lester ◽  
G. Schreyer ◽  
G. Zell ◽  
S. Schrier ◽  
...  
Keyword(s):  
Solid State ◽  
Power Amplifier ◽  
High Power ◽  
High Efficiency ◽  
State Power ◽  
60 Ghz

scholarly journals HIGH POWER BROADBAND PULSED MICROWAVE SOLID-STATE POWER AMPLIfIER WITH HIGH AMPLITUDE-PHASE STABILITY

2020 ◽  
Vol 258 (3) ◽  
pp. 53-59
Author(s):  
B. V. Emelyanov
Keyword(s):  
Mathematical Modeling ◽  
Solid State ◽  
Power Amplifier ◽  
Phase Stability ◽  
High Power ◽  
Theoretical Calculations ◽  
State Power ◽  
High Amplitude ◽  
Main Factors ◽  
The Stability

In this paper the principles of measuring the amplitude-phase stability are described. Fa ctors that negatively affect the amplitude-phase stability of a solid-state power amplifier are considered. The results of theoretical calculations and mathematical modeling of the dependence of this stability on various factors are presented, and on the basis of these results the main factors that negatively affect the amplitude-phase stability are identified. In the conclusion I present the results of practical measurements of the stability, and suggest methods to improve the amplitude-phase stability of high-power solid-state power amplifiers.

scholarly journals New Six-Way Waveguide to Microstrip Transition applied in X Band Spatial Power Combiner

2017 ◽  
Vol 6 (4) ◽  
pp. 42-44 ◽  
Author(s):  
D. Passi ◽  
A. Leggieri ◽  
R. Citroni ◽  
F. Di Paolo
Keyword(s):  
Solid State ◽  
Electric Field ◽  
High Power ◽  
Power Amplifiers ◽  
Return Loss ◽  
High Efficiency ◽  
State Power ◽  
Power Combiner ◽  
X Band

A Spatial Power Combiner is proposed using an innovative waveguide to microstrip transition capable to divide the electric field in six equal parts per card. This device can combine 12 MMIC Solid State Power Amplifiers in the whole X Band with 13 dB of return loss and only 2.2 dB losses in a small size, high power and high efficiency system.

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