期刊
IEEE JOURNAL OF SOLID-STATE CIRCUITS
卷 46, 期 10, 页码 2203-2214出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSSC.2011.2163213
关键词
InP HBT; millimeter-wave oscillators; MMIC oscillators; terahertz; TMICs; voltage-controlled oscillators
资金
- Defense Advanced Research Projects Agency [HR0011-09-060]
- Teledyne Scientific Imaging
We report on the development of a 0.25-mu m InP HBT IC technology for lower end of the THz frequency band (0.3-3 THz). Transistors demonstrate an extrapolated f(max) of > 800 GHz while maintaining a common-emitter breakdown voltage (BVCEO) > 4 V. The transistors have been integrated in a full IC process that includes three-levels of interconnects, and backside processing. The technology has been utilized for key circuit building blocks (amplifiers, oscillators, frequency dividers, PLL, etc), all operating at >= 300 GHz. Next, we report a series of fundamental oscillators operating up to 0.57 THz fabricated in a 0.25-mu m InP HBT technology. Oscillator designs are based on a differential series-tuned topology followed by a common-base buffer, in a fixed-frequency or varactor-tuned scheme. For >= 400 GHz designs, a subharmonic down-conversion mixer is integrated to facilitate spectrum measurement. At optimum bias, the measured output power was -6.2, -5.6, and -19.2 dBm, for 310.2-, 412.9-, and 573.1-GHz designs, respectively, with P-DC <= 115 mW. Varactor-tuned designs demonstrated 10.6-12.3 GHz of tuning bandwidth up to 300 GHz.
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