电子系统通常要求成本低、体积小、多功能的组合件。本文将描述一个4GHz全单片接收机,它作为集成电路组合件适用于各种微波系统。单片接收机做在1.6mm~2的GaAs片上,其中包括一级双平衡混频器和5级射频放大器,图1说明,当把混合电路制成单片电路便可实现大量节约。单片接收机的研制成功为微波电路的设计者提供一种方便,即在设计数字和低频模拟电路系统时,预先就可以知道集成电路的性能和优点。如图2所示,单片接收机是在未掺杂的GaAs液相外延片上采用选择离子注入技术制 Electronic systems often require low cost, small size, multi-functional assemblies. This article will describe a 4GHz all-monolithic receiver that can be used as an integrated circuit assembly for a variety of microwave systems. The monolithic receiver is made on a 1.6mm-2 GaAs chip, which includes a first-order double-balanced mixer and a fifth-class RF amplifier. Figure 1 shows that a lot of savings can be achieved when making a hybrid circuit into a monolithic circuit. The successful development of monolithic receivers provides designers of microwave circuits with the convenience of knowing in advance the performance and benefits of integrated circuits when designing digital and low frequency analog circuitry. As shown in Figure 2, monolithic receivers are fabricated on undoped GaAs liquid-crystal epitaxial wafers using selective ion implantation