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Solid State Microwave Device Design and Production |
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HMIC & MMIC Technology |
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Traveling Wave Tube Amplifier Design and Production |
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Ka Band TWTA |
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Ku Band TWTA |
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X Band TWTA |
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C Band TWTA |
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S Band TWTA |
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Military Radar Sub-system Technology |
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uP Software and Digital Circuit Board Design |
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IF Amplifiers |
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Automatic Frequency Control Units |
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X-Band Transmitter Driver Units |
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L-Band Receivers |
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Ka~S Band Amplifier |
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Mixer |
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L-Band Phase Shifters |
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Synthesizer |
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Power Supply Technology |
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Magnetron Modulators |
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．Line-Type, SCR-Magnetic |
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．Up to 30KV, 30A peak output |
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High Voltage High Power Switching Mode Power Supplies |
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．PWM, SCR, QR Control |
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．Switching Frequency up to 200KHz |
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．Up to 26KV, 2KW output |
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(A) The Helix Structure of Helix TWT |
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(B)The Cavity Structure of Coupled-Cavity TWT
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(C) Switching-Mode Power Supply Compare with Line-Type Power Supply |
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| Compare Item |
Line-Type Power Supply |
Switching Mode Power Supply |
| Efficiency |
Low (30%~50%) |
High (>60%) |
| Size |
Large |
Small |
| Weight |
Heavy |
Light |
| Circuit |
Simple |
Complicated |
| Stability |
High |
Medium |
| Ripple |
Small |
Large |
| Transient Response |
Fast |
Medium |
| Cost |
Low(100%)(40W~150W) |
Medium(150%) |
| Electromagnetic Interference |
Small |
Large |
| Input Voltage Range |
AC source only |
DC or AC |
| Easy Assembly |
Transformer can not mount on PCB |
Component is easy mounting on PCB |
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Wide Band TWTA Block Diagram |
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