The new 1 kW power module for ADS project needs the optimization of cooling design including water flow and tunnel layout, and the water flow of three tons per hour was chosen to be a goal for a 20 kW power source.Acc...The new 1 kW power module for ADS project needs the optimization of cooling design including water flow and tunnel layout, and the water flow of three tons per hour was chosen to be a goal for a 20 kW power source.According to analysis from the insertion and integrated loss, about 24 modules were integrated into the rated power. Thus, every module has a cooling flow of 2.1 L/min for RF heat load and power supply loss, which is very hard to achieve if no special consideration and techniques. A new thermal simulation method was introduced for thermal analysis of cooling plate through CST multi-physics suite,especially for temperature of power LDMOS transistor.Some specific measures carried out for the higher heat transfer were also presented in this paper.展开更多
为了确保卫星系统电磁兼容性满足要求,设计了一款应用于卫星测控通信系统的小型化S频段高谐波抑制功率放大器。通过在功放输出端设置谐波抑制网络改善了电路的谐波抑制性能。采用集总与分布参数元件相结合匹配形式,实现了电路的小型化...为了确保卫星系统电磁兼容性满足要求,设计了一款应用于卫星测控通信系统的小型化S频段高谐波抑制功率放大器。通过在功放输出端设置谐波抑制网络改善了电路的谐波抑制性能。采用集总与分布参数元件相结合匹配形式,实现了电路的小型化设计。电路尺寸38. 5 mm×28. 2 mm。通过对功放腔体结构进行细化建模仿真,确保了功放电路的稳定性。实测结果表明,当工作频率为2. 52 GHz时,功放1 d B压缩点大于31 d Bm,谐波抑制度大于61 d Bc,功率附加效率高于35%, 1 d B带宽大于320 MHz。与国内外同类产品相比,该功放在谐波抑制性能等方面具有明显优势。展开更多
固态功放组件是固态雷达发射机的重要组成部分。随着微波功率器件的不断发展,固态功放组件正在向着大功率、大脉冲宽度、轻小型化方向发展。介绍了一种新型液冷固态功放组件的设计方法。本组件布局简洁、结构紧凑,使用4个单管额定功率为...固态功放组件是固态雷达发射机的重要组成部分。随着微波功率器件的不断发展,固态功放组件正在向着大功率、大脉冲宽度、轻小型化方向发展。介绍了一种新型液冷固态功放组件的设计方法。本组件布局简洁、结构紧凑,使用4个单管额定功率为600 W的Ga N功率晶体管进行功率合成,组件输出功率在频带内可轻松达到1.5 k W。最终试验证明本固态功放组件性能可靠稳定,达到预期效果。展开更多
基金supported by the ‘‘strategic priority research program’’ of the Chinese Academy of Sciences(No.XDA030205)
文摘The new 1 kW power module for ADS project needs the optimization of cooling design including water flow and tunnel layout, and the water flow of three tons per hour was chosen to be a goal for a 20 kW power source.According to analysis from the insertion and integrated loss, about 24 modules were integrated into the rated power. Thus, every module has a cooling flow of 2.1 L/min for RF heat load and power supply loss, which is very hard to achieve if no special consideration and techniques. A new thermal simulation method was introduced for thermal analysis of cooling plate through CST multi-physics suite,especially for temperature of power LDMOS transistor.Some specific measures carried out for the higher heat transfer were also presented in this paper.
文摘为了确保卫星系统电磁兼容性满足要求,设计了一款应用于卫星测控通信系统的小型化S频段高谐波抑制功率放大器。通过在功放输出端设置谐波抑制网络改善了电路的谐波抑制性能。采用集总与分布参数元件相结合匹配形式,实现了电路的小型化设计。电路尺寸38. 5 mm×28. 2 mm。通过对功放腔体结构进行细化建模仿真,确保了功放电路的稳定性。实测结果表明,当工作频率为2. 52 GHz时,功放1 d B压缩点大于31 d Bm,谐波抑制度大于61 d Bc,功率附加效率高于35%, 1 d B带宽大于320 MHz。与国内外同类产品相比,该功放在谐波抑制性能等方面具有明显优势。
文摘固态功放组件是固态雷达发射机的重要组成部分。随着微波功率器件的不断发展,固态功放组件正在向着大功率、大脉冲宽度、轻小型化方向发展。介绍了一种新型液冷固态功放组件的设计方法。本组件布局简洁、结构紧凑,使用4个单管额定功率为600 W的Ga N功率晶体管进行功率合成,组件输出功率在频带内可轻松达到1.5 k W。最终试验证明本固态功放组件性能可靠稳定,达到预期效果。
