This letter presents the integration of multiple active devices output port directly with the antenna for simultaneous active frequency multiplication and radiation. This eliminates the circuitry losses at the multiplied output frequency, which points to a significant advantage of the proposed unified integration space in addition to size reduction. Furthermore, active devices are configured in parallel to enhance the power handling capability of this unified module. Initially, the rectangular patch antenna is analyzed and presented as a potential design space for simultaneously accomplishing efficient radiation, output matching, and fundamental frequency suppression. Subsequently, a procedure to achieve the circuit–antenna unification is described through a prototype operating as a 14–28 GHz frequency doubler using two paralleled transistors. The fabricated prototype realizes the maximum conversion gain of 9 dB and fundamental frequency suppression of 14 dB from measurements.

中文翻译：

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Multi-FET有源倍频器和多端口天线的统一集成空间

这封信介绍了将多个有源设备输出端口直接与天线集成在一起，以便同时进行有源倍频和辐射。这消除了倍增输出频率下的电路损耗，这表明建议的统一集成空间除了减小尺寸外还有一个显着优势。此外，有源器件并联配置以增强该统一模块的功率处理能力。首先，分析矩形贴片天线并将其作为同时实现高效辐射、输出匹配和基频抑制的潜在设计空间。随后，通过使用两个并联晶体管作为 14-28 GHz 倍频器运行的原型，描述了实现电路-天线统一的过程。