Signal crosstalk and common-mode noise are two issues for engineers when designing today's increasingly complicated microwave integrated circuits [1]. Compared with single-ended circuits, balanced circuits can provide high immunity to environmental noise and broadband common-mode rejection capability [2]. Over the past few years, various balanced passive circuits, such as filters [3], antennas [4], power dividers, and couplers [5]-[17], have been extensively studied. Power dividers and couplers are widely used in microwave integrated circuits, such as antenna feeding networks, balanced mixers, and amplifiers. Balanced couplers are used in double-balanced mixers [18] and balanced frequency doublers [19] to achieve higher efficiency and lower loss.

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可调谐平衡功率分配器：最近开发的具有固定和可调功能的平衡功率分配器和耦合器概述


信号串扰和共模噪声是工程师在设计当今日益复杂的微波集成电路时面临的两个问题[1]。与单端电路相比，平衡电路可以提供较高的抗环境噪声能力和宽带共模抑制能力[2]。在过去的几年里，各种平衡无源电路，如滤波器[3]、天线[4]、功率分配器和耦合器[5]-[17]，得到了广泛的研究。功率分配器和耦合器广泛应用于微波集成电路中，例如天线馈电网络、平衡混频器和放大器。平衡耦合器用于双平衡混频器[18]和平衡倍频器[19]，以实现更高的效率和更低的损耗。