scholarly journals Large power microwave nonlinear effects on multifunction amplifier chip for Ka-band T/R module of phased array radar

AIP Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 125226 ◽  
Author(s):  
Guo Guo ◽  
Ling Gu ◽  
Ruowu Wu ◽  
Xiong Xu ◽  
Taifu Zhou ◽  
...  
Keyword(s):  
Phased Array ◽  
Nonlinear Effects ◽  
Large Power ◽  
Ka Band ◽  
Phased Array Radar ◽  
Power Microwave

DETAILED ANALYSIS ON CUMULUS CLOUD IN EARLY DEVELOPING STAGE BY USING Ka BAND RADAR AND PHASED ARRAY RADAR

2019 ◽  
Vol 75 (2) ◽  
pp. I_1171-I_1176
Author(s):  
Eiichi NAKAKITA ◽  
Mitsumasa TAKAO ◽  
Tomohiro NIIBO ◽  
Kosei YAMAGUCHI ◽  
Katsuhiro NAKAGAWA
Keyword(s):  
Detailed Analysis ◽  
Phased Array ◽  
Cumulus Cloud ◽  
Ka Band ◽  
Phased Array Radar

scholarly journals Broadband and Integratable 2 × 2 TWT Amplifier Unit for Millimeter Wave Phased Array Radar

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2808
Author(s):  
Guo Guo ◽  
Zhenlin Yan ◽  
Zhenzhen Sun ◽  
Jianwei Liu ◽  
Ruichao Yang ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Phased Array ◽  
Wave Interaction ◽  
Phase Congruency ◽  
Traveling Wave Tube ◽  
Large Power ◽  
Saturated Gain ◽  
Phased Array Radar ◽  
Vacuum Device ◽  
Beam Wave Interaction

A novel power amplifier unit for a phased array radar with 2 × 2 output ports for a vacuum electron device is proposed. Double parallel connecting microstrip meander-lines are employed as the slow-wave circuits of a large power traveling wave tube operate in a Ka-band. The high frequency characteristics, the transmission characteristics, and the beam–wave interaction processes for this amplifier are simulated and optimized. For each output port of one channel, the simulation results reveal that the output power, saturated gain, and 3-dB bandwidth can reach 566 W, 27.5 dB, and 7 GHz, respectively. Additionally, the amplified signals of four output ports have favorable phase congruency. After fabrication and assembly, transmission tests for the 80-period model are performed preliminarily. The tested “cold” S-parameters match well with the simulated values. This type of integratable amplifier combined with a vacuum device has broad application prospects in the field of high power and broad bandwidth on a millimeter wave phased array radar.

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