中文摘要：

设计和一条宽带的测量结果指导照阶段移动调音(QPSK ) 调节的人和解调器在这份报纸被描述。电路用 1-m GaAs HBT 技术被制作。压制本地振荡器(LO ) 漏，双 balanced 混合器在调节的人 / 解调器作为核心单位被选择。包括兰格 coupler 和二 Baluns 的嵌入的四方法的照 divider 在系统被利用产生照阶段 LO 信号。作为紧接的测试的结果，系统能超过 2 Gb/s 以数据率操作(1 Gb/s 每我和 Q 隧道) 在 30 GHz。调节的人和解调器的供应与 1.35 公里的尺寸是 5.0 V 和 4.5 V，

英文摘要：

The design and measured results of a broad-band direct quadrature phase shift keying （QPSK） modulator and demodulator are described in this paper. The circuits are fabricated using 1-μm GaAs HBT technology. To suppress the local oscillator （LO） leakage, the double-balanced mixer is selected as the core unit in the modulator/demodulator. An embedded four-way quadrature divider which includes a Lange coupler and two Baluns is utilized in the system to generate quadrature-phase LO signals. As results of a back-to-back test, the system can operate at data rates in excess of 2 Gb/s （1 Gb/s per I and Q channels） at 30 GHz. The supplies of the modulator and demodulator are 5.0 V and 4.5 V with size of 1.35 mm×3.5 mm and 1.36 mm×3.4 mm, respectively.