ABSTRACT In this paper, design process of a new compact microstrip Gysel power divider (GPD) with harmonics elimination is proposed. In the designed GPD structure, two types of resonators are applied to make transmission zeros (TZs). T-shaped resonator makes one TZ at lower frequency and U-shaped resonator makes two TZs at higher frequencies. These three created transmission zeroes by applied resonators result in the good harmonics suppressing in the Gysel divider. The LC-equivalent circuit (LCEC) of the resonators is extracted and the locations of these three transmission zeroes are calculated analytically. The proposed GPD creates three transmission zeros at near 3 GHz, 4.9 GHz, and 9.1 GHz. The proposed Gysel power divider (GPD) with applied resonators reduces the circuit size more than 66% (occupied 34% size) compared with the conventional GPD with λ/4 transmission lines. Moreover, the fractional bandwidth of the proposed divider is 50% and also suppresses up to seventh harmonic.

中文翻译：

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使用带有谐波抑制功能的 U 形和 T 形谐振器的紧凑型 Gysel 功率分配器设计

摘要 在本文中，提出了一种具有谐波消除功能的新型紧凑型微带 Gysel 功率分配器 (GPD) 的设计过程。在设计的 GPD 结构中，应用了两种谐振器来制作传输零点 (TZ)。T形谐振器在较低频率下产生一个TZ，U形谐振器在较高频率下产生两个TZ。这三个由应用谐振器创建的传输零点导致 Gysel 分频器中抑制良好的谐波。提取谐振器的 LC 等效电路 (LCEC) 并分析计算这三个传输零点的位置。提议的 GPD 在 3 GHz、4.9 GHz 和 9.1 GHz 附近创建三个传输零点。与具有 λ/4 传输线的传统 GPD 相比，所提出的带有应用谐振器的 Gysel 功率分配器 (GPD) 将电路尺寸减小了 66% 以上（占据了 34% 的尺寸）。此外，建议的分频器的分数带宽为 50%，并且还抑制了七次谐波。