A QPSK direct digital modulator in GaAs HBT at 28 GHz

机译：GaAs HBT中的28 GHz QPSK直接数字调制器

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A new overlay coupler and power combiner have been realized at millimeter-wave frequency. The coupler and power combiner have an area that is less than one half that of the Lange coupler and two-stage Wilkinson power combiner respectively. They were used to construct a QPSK modulator, employing balanced reflection topology, in which the HBTs acted as switches. The QPSK channel showed plusmn0.4 dB amplitude imbalance and plusmn2deg phase error over 24~32 GHz

机译：已经在毫米波频率上实现了新的叠加耦合器和功率组合器。耦合器和功率合成器的面积分别小于Lange耦合器和两级Wilkinson功率合成器的一半。它们被用来构造QPSK调制器，采用平衡反射拓扑，其中HBT充当开关。在24〜32 GHz范围内，QPSK通道显示出+/- 0.4 dB的幅度不平衡和mn2deg的相位误差

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《Electrical and Computer Engineering, 2005. Canadian Conference on》||p.1882-1885|共4页
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Yi Sun; Freundorfer A.P.; Sawatzky D.;
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1. A 0.7-3 GHz GaAs QPSK/QAM direct modulator [J] . Boveda A., Alonso J.I. IEEE Journal of Solid-State Circuits . 1993,第12期

机译：0.7-3 GHz GaAs QPSK / QAM直接调制器
2. Compact 38 GHz MMIC balanced vector modulators employing GaAs/InGaP HBTs [J] . Ashtiani A.E., Gokdemir T. Electronics Letters . 1999,第10期

机译：采用GaAs / InGaP HBT的紧凑型38 GHz MMIC平衡矢量调制器
3. InGaAs-InP DHBTs for Increased Digital IC Bandwidth Having a 391-GHz f{sub}τ and 505-GHz f{sub}(max) [J] . Z. Griffith, M. Dahlstrom, M. J. W. Rodwell, IEEE Electron Device Letters . 2005,第1期

机译：具有391 GHz f {sub}τ和505 GHz f {sub}（max）的数字IC带宽增加的InGaAs-InP DHBT
4. A QPSK Direct Digital Modulator in GaAs HBT at 28 GHz [C] . Yi Sun, A. P. Freundorfer, Dave Sawatzky Canadian Conference on Electrical and Computer Engineering . 2005

机译：在28 GHz的GaAAS HBT中的QPSK直接数字调制器
5. Radio frequency direct-digital QPSK modulators in CMOS technology. [D] . El-Gabaly, Ahmed M. 2007

机译：CMOS技术中的射频直接数字QPSK调制器。
6. 60-GHz Millimeter-wave Over Fiber with Directly Modulated Dual-mode Laser Diode [O] . Cheng-Ting Tsai, Chi-Hsiang Lin, Chun-Ting Lin, -1

机译：带有直接调制双模激光二极管的60GHz毫米波光纤
7. 28 dB Gain DC-6 GHz GaInP/GaAs HBT Wideband Amplifiers with and without Emitter Capacitive Peakingud [O] . Meng Chin-Chun, Wu Tzung-Han, Lu Shey-Shi 2002

机译：具有和不具有发射器电容性峰值的28 dB增益DC-6 GHz GaInP / GaAs HBT宽带放大器 ud
8. 16-GHz Bandwidth InAlAs-InGaAs Monolithically Integrated p-i-n/HBT Photoreceiver [R] . Gutierrez-Aitken, A. L., Yang, K., Zhang, X., 1995

机译：16 GHz带宽Inalas-InGaas单片集成p-i-n / HBT光接收器

A QPSK direct digital modulator in GaAs HBT at 28 GHz

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