共查询到20条相似文献,搜索用时 15 毫秒
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本文首先简要介绍异质结双极晶体管(HBT)的结构和特点,接着评述HBT工艺技术发展现状、单元设计和目前制作的功率HBT的性能。 相似文献
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III-V族化合物 HBT微波特性的精确建模对该类器件的微波功率应用极为重要.本文开发了一个可精确用于表征III-V族化合物HBT直流、大、小信号特性的新模型,并可用于对HBT器件极为重要的自热效应的仿真. 模型开发过程中对UCSD HBT模型和VBIC BJT模型进行了借鉴,但新模型不同于以上两个模型. 模型通过对比直流、S参数和功率测量结果进行验证. 相似文献
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Chandrasekhar S. Lunardi L.M. Gnauck A.H. Hamm R.A. Qua G.J. 《Photonics Technology Letters, IEEE》1993,5(11):1316-1318
Monolithic photoreceivers, using the base-collector junction of an InP/InGaAs phototransistor structure for a p-i-n photodetector, have been fabricated for the first time. Bandwidths as high as 3 GHz and bit rates as high as 5 Gb/s, with sensitivities of -22.5 dBm and -21.5 dBm for light focused on the p-i-n or on the first stage transistor of the preamplifier, respectively, have been achieved. These results represent the highest operating speed demonstrated for any phototransistor-based receiver 相似文献
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Jing-Yuh Chen Shiou-Ying Cheng Chun-Yuan Chen Kuan-Ming Lee Chih-Hung Yen Ssu-Yi Fu Sheng-Fu Tsai Wen-Chau Liu 《Electron Devices, IEEE Transactions on》2004,51(11):1935-1938
The dc characteristics of an interesting heterojunction bipolar transistor with an InGaAs-InGaAsP composite-collector structure are studied and reported. Due to the insertion of an InGaAsP setback layer at the base-emitter heterojunction, the potential spikes as well as the electron blocking effect are suppressed significantly. In addition, the presence of an effective base-collector homojunction substantially reduces the current blocking effect. The studied device shows good dc performances including the small offset and saturation voltage without degrading the breakdown behavior. A typical dc current gain of 118 and the desired current amplification over 11 decades of the magnitude of collector current I/sub C/ are obtained. 相似文献
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《Photovoltaics Bulletin》2002,2002(4):6
Kobe Steel's photovoltaic system has received the New Energy Foundation Chairman Prize from the New Energy Foundation, US. It was selected for the prize because of an innovative application of PV modules to the walls and roof of the Dai-Ichi Minami building in Kobe, western Japan. 相似文献
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单片低噪声HBT VCO 总被引:1,自引:0,他引:1
报道一组单片HBTVCO电路的设计、制作及其测试结果。电路采用HBT作为有源器件,PN结二极管作为变容管。S波段单片VCO的输出功率为0dBm,调谐范围100MHz,在载波频率2.84GHz处,相位噪声为-80dBc/Hz@100kHz。以C波段单片HBTVCO的输出功率为-10dBm。这些结果表示HBT在微波与毫米波振荡器运用中具有较好的低相位噪声特性。 相似文献
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