A 200 W broadband high power amplifier using hybrid power combining network and digital level control

2020 ◽  
Vol 30 (5) ◽  
Author(s):  
Yasin Alekajbaf ◽  
Nasser Masoumi ◽  
Mahmoud Mohammad‐Taheri ◽  
Safieddin Safavi‐Naeini
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Level Control ◽  
Power Combining ◽  
Hybrid Power ◽  
High Power Amplifier

scholarly journals X-Band GaN High-Power Amplifier Using Hybrid Power Combining Technique for SAR Applications

2018 ◽  
Vol 7 (5) ◽  
pp. 124-130 ◽  
Author(s):  
Y.-J. Lee ◽  
C.-Y. Chang ◽  
Y.-H. Chou ◽  
I-Y. Tarn ◽  
J. Y.-C. Yaung ◽  
...  
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
High Power ◽  
Maximum Output Power ◽  
Maximum Output ◽  
High Electron ◽  
Power Combining ◽  
Hybrid Power ◽  
High Power Amplifier ◽  
X Band

An X-band high-power amplifier (HPA) based on gallium nitride (GaN) high electron mobility transistors (HEMTs) has been developed for synthetic aperture radar (SAR) applications. A hybrid power combining technique, including microstrip circuits and waveguides, is used to design the HPA. For reducing the size, four 50 W GaN HEMTs cascaded with one 1-to-4 power divider and one 4-to-1 power combiner form a 4-way power combined PCB circuits. For combing the high power and driving an antenna, two PCB circuits are combined by magic-T waveguides. The transmission efficiency of the power combining is approximately 80%. In the 10% duty cycle (pulse width 100 us), the output power of the HPA is over 200 W across the band of 9.5–9.8 GHz. The maximum output power is 230 W at 9.5 GHz, and the power gain is 8.3 dB at 46.1°C.

Broad-band high-power amplifier using spatial power-combining technique

2003 ◽  
Vol 51 (12) ◽  
pp. 2469-2475 ◽  
Author(s):  
Pengcheng Jia ◽  
Lee-Yin Chen ◽  
A. Alexanian ◽  
R.A. York
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Broad Band ◽  
Power Combining ◽  
Spatial Power Combining ◽  
High Power Amplifier

An Octave Bandwidth, High PAE, Linear, Class J GaN High Power Amplifier

2012 ◽  
Author(s):  
Kris Skowronski ◽  
Steve Nelson ◽  
Rajesh Mongia ◽  
Howard Sheehan ◽  
Sid Anderson
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
High Power Amplifier
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