InGaAs high electron mobility transistors （HEMTs） on InP substrate with very good device performance have been grown by mental organic chemical vapor deposition （MOCVD）. Room temperature Hall mobilities of the 2-D...InGaAs high electron mobility transistors （HEMTs） on InP substrate with very good device performance have been grown by mental organic chemical vapor deposition （MOCVD）. Room temperature Hall mobilities of the 2-DEG are measured to be over 8 700 cm^2/V-s with sheet carrier densities larger than 4.6× 10^12 cm^ 2. Transistors with 1.0 μm gate length exhibits transconductance up to 842 mS/ram. Excellent depletion-mode operation, with a threshold voltage of-0.3 V and IDss of 673 mA/mm, is realized. The non-alloyed ohmic contact special resistance is as low as 1.66×10^-8 Ω/cm^2, which is so far the lowest ohmic contact special resistance. The unity current gain cut off frequency （fT） and the maximum oscillation frequency （fmax） are 42.7 and 61.3 GHz, respectively. These results are very encouraging toward manufacturing InP-based HEMT by MOCVD.展开更多
面向微波毫米波低噪声放大电路对高性能低噪声放大器件的需求,进行0.15μm栅长GaAs PHEMT低噪声器件制备工艺的开发,在制备工艺中采用了欧姆特性优异的复合帽层欧姆接触、低寄生电容的介质空洞栅结构以及高击穿电压的双槽结构。在此基...面向微波毫米波低噪声放大电路对高性能低噪声放大器件的需求,进行0.15μm栅长GaAs PHEMT低噪声器件制备工艺的开发,在制备工艺中采用了欧姆特性优异的复合帽层欧姆接触、低寄生电容的介质空洞栅结构以及高击穿电压的双槽结构。在此基础上实现了一款性能优异的Ku波段低噪声放大电路,电路在Ku频段全频带(14~18 GHz)内实现了优良的性能,其噪声系数小于1.3 d B,增益大于17 d B。电路采用5 V电源供电,功耗为250 m W,芯片面积为2 mm×1.6 mm;这款性能优异的Ku频段低噪声放大器特别适用于高信噪比要求的卫星通信等应用。展开更多
基金Project(Z132012A001)supported by the Technical Basis Research Program in Science and Industry Bureau of ChinaProject(61201028,60876009)supported by the National Natural Science Foundation of China
文摘InGaAs high electron mobility transistors （HEMTs） on InP substrate with very good device performance have been grown by mental organic chemical vapor deposition （MOCVD）. Room temperature Hall mobilities of the 2-DEG are measured to be over 8 700 cm^2/V-s with sheet carrier densities larger than 4.6× 10^12 cm^ 2. Transistors with 1.0 μm gate length exhibits transconductance up to 842 mS/ram. Excellent depletion-mode operation, with a threshold voltage of-0.3 V and IDss of 673 mA/mm, is realized. The non-alloyed ohmic contact special resistance is as low as 1.66×10^-8 Ω/cm^2, which is so far the lowest ohmic contact special resistance. The unity current gain cut off frequency （fT） and the maximum oscillation frequency （fmax） are 42.7 and 61.3 GHz, respectively. These results are very encouraging toward manufacturing InP-based HEMT by MOCVD.
文摘面向微波毫米波低噪声放大电路对高性能低噪声放大器件的需求,进行0.15μm栅长GaAs PHEMT低噪声器件制备工艺的开发,在制备工艺中采用了欧姆特性优异的复合帽层欧姆接触、低寄生电容的介质空洞栅结构以及高击穿电压的双槽结构。在此基础上实现了一款性能优异的Ku波段低噪声放大电路,电路在Ku频段全频带(14~18 GHz)内实现了优良的性能,其噪声系数小于1.3 d B,增益大于17 d B。电路采用5 V电源供电,功耗为250 m W,芯片面积为2 mm×1.6 mm;这款性能优异的Ku频段低噪声放大器特别适用于高信噪比要求的卫星通信等应用。
